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Thread: 300 BLK Load Data

  1. #51
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    Re: 300 BLK Load Data


    SSK 300 WHISPER®
    FOR SSK BARRELS ONLY!!
    SUBSONIC DATA

    (221 Remington Fireball parent case) Accurate Arms #2 powder, Remington 7 ½ primer, 16.5” barrel, 70F/21C.
    Powder Bullet Average Extreme Standard
    Grains Grains fps/fpe Spread Deviation
    5.76 165 1022/383 12 5
    6.20 190 987/411 33 13
    6.54 220 999/488 32 13
    6.74 220 1015/503 42 18
    6.92 220 1027/515 34 12 Maximum
    With Reloader #7 powder, other factors the same:
    10.45 220 976/465 38 19
    10.82 220 1055/544 49 17
    11.00 220 1071/560 48 19
    10.45 250 1012/569 73 28
    With Accurate Arms #1680 powder, other factors the same:
    10.30 220 1023/511 33 15
    10.30 250 1013/570 44 20
    11.40 250 1147/731 13 4
    With Accurate Arms #2015 powder, other factors the same:
    12.64 165 1046/401 63 35
    12.00 200 1007/450 20 10
    12.36 220 1073/563 27 10
    12.00 220 1046/535 30 11
    With Accurate Arms #9 powder, other factors the same:
    8.08 165 1033/391 52 23
    8.54 220 1013/501 71 27
    8.78 220 1071/560 28 14
    8.78 250 1040/601 36 12
    8.54 250 1005/561 25 11
    With Hodgdon H110 powder, other factors the same:
    9.10 200 1061/500 39 15
    8.65 220 1003/492 84 35
    8.90 220 1012/500 27 -
    9.10 220 1061/550 37 17
    8.60 250 980/533 15 6
    8.90 250 1052/615 41 15
    With Hercules 2400 powder, other factors the same:
    8.26 168 1103/454 30 11
    7.90 168 1068/426 30 12
    8.26 190 1062/476 21 8
    8.58 250 1040/601 50 18
    8.26 250 994/549 60 22
    With Hodgdon H4227 powder, other factors the same:
    9.20 220 1006/495 89 33
    9.20 250 1011/568 89 24
    9.30 250 1039/599 116 44
    9.40 250 1027/586 135 35
    With Accurate Arms #7 powder, other factors the same:
    7.50 168 1050/411 31 13
    7.70 168 1082/437 25 9
    8.00 220 1016/504 20 11
    8.00 250 1034/594 47 17
    With Hodgdon H335 powder, other factors the same:
    13.86 220 1031/519 54 20
    With Accurate Arms #5 powder, other factors the same:
    7.54 220 1045/534 24 9
    7.96 250 1044/605 43 17

    Author’s note: The two-decimal charge weights are obtained by dropping then charges into the scale pan, weighing and averaging them. – DAG




    300 WHISPER®
    Supersonic Data

    Temperature 60-65F/15.5-18.3C
    Powder Grains Powder Average fps/fpe Extreme Spread
    125 grain Nosler Ballistic Tip
    20.6 Hodgdon H110 2333/1511 20 Bolt Gun (BG)
    20.6 “ “ 2283/1447 64 AR-15
    22.0 Hodgdon H110 2438/1650 31 BG
    22.0 “ “ 2396/1594 89 Too Hot, AR-15

    150 grain bullet (Temperature 60-65F/15.5-18.3C)
    18.8 AA# 2015BR 1615/869 29
    18.9 Reloader 7 1834/1121 54
    20.2 AA# 1680 1994/1325 40
    18.0 Hodgdon H110 2073/1432 13 Bal. Tip
    18.0 Hodgdon H110 2014/1351 29 AR-15

    168 grain bullet (Temperature 60-65F/15.5-18.3C)
    18.8 AA# 2015 BR 1672/1043 28
    18.9 Reloader 7 1823/1240 19
    20.2 AA# 1680 1906/1356 12
    17.2 Hodgdon H110 1958/1431 27 Too Hot, Reduce 0.5 grains

    190 grain bullet (Temperature 60-65F/15.5-18.3C)
    17.7 AA# 2015BR 1564/1032 18
    17.9 AA# 1680 1754/1298 34
    15.4 Hodgdon H110 1725/1256 40 Reduce 0.3 grains

    220 grain bullet (Temperature 60-65F/15.5-18.3C)
    15.6 AA# 2015BR 1415/978 89 1 slow shot
    15.4 Reloader 7 1485/1078 47
    15.6 AA# 1680 1467/1052 64 BG
    15.6 AA# 1680 1492/1088 11 AR-15
    12.5 Hodgdon H110 1412/974 47
    9.1 Hodgdon H110 1070/559 49
    9.1 Hodgdon H110 1052/541 1 shot, AR-15

    250 grain bullet (Temperature 60-65/15.5-18.3 C)
    12.0 AA# 2015BR 1101/673 42
    12.1 Reloader 7 1211/814 44
    13.9 AA# 1680 1304/ - 95 240 & 250 mixed
    14.6 AA# 1680 1346/ - 82 “ “
    14.6 “ “ 1377/1011 36 AR-15, 240
    12.0 Hodgdon H110 1376/1009 46 240 grain

    POWDER POWDER BULLET T/C 10” T/C 14” SSK 10”
    GRAINS WEIGHT
    8.1 AA #7 168 Hornady 965 962 1054
    5.8 WW 231 168 Hornady 912 918 1032
    (WW SP PRIMERS OAL 2.235)

    AA1680 – 220 Sierra Matchking OAL 2.235 cases-unfired. Primer Rem. 7 ½”
    NOTE: This primer seems to give the most uniform velocities with this primer.

    12.2 1100 ---- 1196
    13.3 1225 1261 1324
    13.9 1287 1306 1366
    14.9 * 1367 1427 1456
    • Maximum case capacity – Maximum pressure. All above loads very uniform.

    Velocities at 70 F

    Do not seat bullets against rifling. Some T/C barrels will stabalize SOME 220 Sierra Matchkings at around 950 fps, others appear to need up to 1200fps to produce sub MOA groups.

  2. #52
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    Re: 300 BLK Load Data

    I believe Remington brass was shipped to MidwayUSA today.

    300 AAC Blackout has as much energy from a 16 inch barrel as 5.56mm from a 24 inch barrel. You get 8 inches of barrel for free.

  3. #53
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    Re: 300 BLK Load Data

    I haven't had a chance to do any further load development with my stuff due to a miriad of family and work issues rearing their head lately.
    I did come across some load information posted on other sites though.
    Here are the links:
    http://www.quarterbore.net/forums/showthread.php?t=5125
    http://www.silencertalk.com/forum/vi...28&t=68693
    http://www.reloadersnest.com/frontpa...?CaliberID=135
    http://listmequick.com/300/Sierra300whisper.pdf

    And here is the data:

    Barrel length: 10.5"
    Port position: Pistol
    Barrel Twist: 1 in 8
    OAL: 2.15"
    Dies: Redding 300/221
    Brass: Hoser's Lake City Mixed Dates
    Primer: CCI 400
    Bullet type: Pulled Sierra Match kings from M118LR
    Bullet weight: 175
    Powder: Alliant 2400 7.9 Grains
    Velocity: 1030 FPS (Average for only 3 shots)
    Standard Deviation: 2 (for only 3 shots)
    Extreme Spread: 5 (for only 3 shots)
    Accuracy results at 50y, off ground with bipod, 4 shot group: .31"
    Temperature: 62
    Altitude within +-100' feet: 4,200'
    Wind: 20mph gusts

    Barrel length 10.5
    Port position..... pistol
    Bullet type.... SMK
    Bullet weight... 220
    Powder... N110..... 8.6gns 2.09oal
    Velocity... 1000
    Standard Deviation
    Extreme Spread... 24
    Accuracy.... .55"
    temperature... 58
    altitude... 300
    wind.... calm

    Barrel length 10.5
    Port position..... pistol
    Bullet type.... AMAX
    Bullet weight... 208
    Powder... N110..... 8.0gns 2.16oal
    Velocity... 1028
    Standard Deviation
    Extreme Spread... 20
    Accuracy.... 3/4"
    temperature... 48
    altitude... 300
    wind.... calm

    Barrel length: 16"
    Port position: Carbine
    Barrel Twist: 1 in 8
    OAL: to fit magazine
    Dies: Redding 300/221
    Brass: Mixed head stamps
    Primer: Tula small rifle
    Bullet type: 210 grain Sierra
    Bullet weight: 210
    Powder: AA 1680 10.5 Grains
    Velocity: 840 FPS (Average for 3 shots)
    Standard Deviation: ?
    Extreme Spread: ?
    Accuracy results at 25y, off sandbag from bench, 5 shot group: less than 1/2"
    Temperature: 65
    Wind: 20mph gusts

    *NOTE*
    This data was not generated by me.
    I only posted the data from entries that contain a sufficient amount of data to be useful / safe.
    As with all hand loading, appropriate techniques must be adhered to.
    "The Constitution is not an instrument for the government to restrain the people, it is an instrument for the people to restrain the government."
    - Patrick Henry

  4. #54
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    Re: 300 BLK Load Data

    Posting for future reference.

    Thanks for all this information guys, a friend of mine got the 10" upper and wants to reload ammo for it and this thread really helped me come up with all the information I needed.
    Orwell was an optimist.

  5. #55
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    Re: 300 BLK Load Data

    Trimming 5.56 brass.

    I have had good luck trimming 5.56 brass with a RCBS Bench trimming tool.

    I remove the hand crank and install my handy 18 Volt Dewalt drill. I use the .22 inside neck bushing.

    Im setting the finnished length to around 1.850 and after resizing this results in aproxamatly 1.860 after pasing them through the Foster resizing die.

    Havent started loading yet, Just preping brass. wainting on my AAC 9" barrel to show up. Should be next week.

    Plan on loading 125's supersonic and the 175 SMK's and 220 SMK's sub sonic.

    We'll see how it goes.
    "It's like working with mercury. It's high science, man. It's an art form."
    (Lincoln Osiris - Tropic Thunder)

  6. #56
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    Re: 300 BLK Load Data

    Here is the first official load data:

    http://www.silencertalk.com/forum/vi...28&t=73990
    300 AAC Blackout has as much energy from a 16 inch barrel as 5.56mm from a 24 inch barrel. You get 8 inches of barrel for free.

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    Re: 300 BLK Load Data

    Dr. Phill. I've been looking forward to your report on the results of using V-V powder. I really like using it in other calibers (particularly N-350 and N-105 in pistols). According to my Edition 8 of the V-V reloading guide, N-110 has a similar burning rate to H-110 and N-120 to AA 1680. How do your trials go?

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    Re: 300 BLK Load Data

    Just got one lb of the new Alliant AR-Comp powder which has been specificlly designed for .223 and .308 heavy bullet loads on the AR platform. I wonder how this is going to work for the 300 Blk? Supposed to be an "improved" RL-15 for heavy bullet loads, manufactured in Sweden, extruded, but with a shorter "rod" than Varget.

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    Re: 300 BLK Load Data

    <div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Ted99</div><div class="ubbcode-body">Just got one lb of the new Alliant AR-Comp powder which has been specificlly designed for .223 and .308 heavy bullet loads on the AR platform. I wonder how this is going to work for the 300 Blk? Supposed to be an &quot;improved&quot; RL-15 for heavy bullet loads, manufactured in Sweden, extruded, but with a shorter &quot;rod&quot; than Varget. </div></div>

    Way too slow. Suitable powders from Alliant are, IMO, RL7 and 2400.

  10. #60
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    Re: 300 BLK Load Data

    waking this thread back up, any news on rem brass?
    Let me guess, this isn't about the alcohol or tobacco?

  11. #61
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    Re: 300 BLK Load Data

    300 AAC Blackout has as much energy from a 16 inch barrel as 5.56mm from a 24 inch barrel. You get 8 inches of barrel for free.

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    Re: 300 BLK Load Data

    Lee has been out for a while now but all have been sold. I think I will keep using my Redding 300/221 dies for now.

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    Re: 300 BLK Load Data

    Anyone shooting the new Hornaday 225? What powder and accuracy?
    Let me guess, this isn't about the alcohol or tobacco?

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    Re: 300 BLK Load Data

    Tag
    No one is more hopelessly enslaved, than the person who falsely believes he is free.
    -- Johann Wolfgang von Goethe

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    Re: 300 BLK Load Data

    You could upload it to Google Docs and share it.

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    Re: 300 BLK Load Data

    Copied here from the general reloading area.

    I had my first range day with my newly assembled 300 BLK rifle and I saw primer craters on both of the loads I tested.

    Rifle Info:
    New CMMG 16&quot; bbl on an Aeroprecision Upper/Lower
    Standard Spring
    Spikes Heavy Buffer (ST-T2?)
    SI Defense BCG
    Timney Trigger
    UBR stock

    Loads derived from QL:
    Winchester .223 Brass, run through Forster die w internals removed to form shoulder, chopped, chamfered, full-length sized, trimmed to 1.365&quot;

    Hornady 150gr FMJ-BT
    2.065&quot; OAL (based on advice for ogive to clear PMag rib)
    W296 Charge Range 14.8gr-16.6gr (based on a 10% redux of max calculated by QL)

    I don't have the load info in front of my for the Hornady 110gr round nose but I saw the same cratering on even the lowest charge. The velocity was a tad higher than QL predicted but only by about 50fps.

    What could be causing this high pressure? Would a new, rough chamber be gripping the brass too much or maybe for too long?

    Is my QL load data somehow way off? For the 150gr load, predicted velocity is 1984fps. My measured velocity was something like 2030fps.

    I didnt see any case head marks. Just cratering. The case sides did show marks that I am assuming were imprinted from the chamber walls.

    Thoughts? I'd hate to have to back off from the low end charge just get the pressure down. Thanks Hiders!!

  17. #67
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    Re: 300 BLK Load Data

    I would not be overly concerned with the cratering.
    The SAMMI Spec 300 BLK chamber is very high pressure.
    Pressure signs that you should be concerned about are such things as swipe marks on the case head from the ejector, primers popping out, or flattened primers.

    Err on the side of caution of course...
    "The Constitution is not an instrument for the government to restrain the people, it is an instrument for the people to restrain the government."
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  18. #68
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    Re: 300 BLK Load Data

    Ok thanks for the reply. I just want to be sure I know what's going on here.

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    Re: 300 BLK Load Data

    Anyone tried Berry's plated bullets? The 110's are $108 per 1000.
    Let me guess, this isn't about the alcohol or tobacco?

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    Re: 300 BLK Load Data

    300 BLK talk, keep it up.
    Let me guess, this isn't about the alcohol or tobacco?

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    Re: 300 BLK Load Data

    Up
    Let me guess, this isn't about the alcohol or tobacco?

  22. #72
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    Re: 300 BLK Load Data

    tag

  23. #73
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    Re: 300 BLK Load Data

    19.7gr 1680
    Federal SR Match
    LC Brass, converted from .223
    155gr Lapua Scenar, HbN coated
    16&quot; bolt action, 1-8&quot; Twist
    Wind at zero mph, 102f, 27% RH

    Group was a bit tough to shoot using an H25 reticle, reticle was thick enough to completely obscure the shoot and see dot.


  24. #74
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    Re: 300 BLK Load Data

    good info! I am going to start on my brass conversion tomorrow!

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    Re: 300 BLK Load Data

    <div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: jdberry</div><div class="ubbcode-body">Anyone tried Berry's plated bullets? The 110's are $108 per 1000. </div></div>

    I'm curious about this as well. Anyone have any info on this?

  26. #76
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    Re: 300 BLK Load Data

    Anyone has good high power load for Speer 125gr bullet with VV N110 powder for 300Blk?

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    Re: 300 BLK Load Data

    <div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: silenshot</div><div class="ubbcode-body">Anyone has good high power load for Speer 125gr bullet with VV N110 powder for 300Blk? </div></div>
    I have used H4198 with 125gr TNT. It is very similar to N110's burn rate. I have gone up to 17gr with no signs of over pressure. BLK load development is on hold until deer season ends but I would start from 15.5gr of N110 and work up from there.

    Sierra states 13.7 - 17.7gr of N110 for their 125gr bullets (SPT &amp; HP/FN), with 17.7 being the maximum load and their recommended hunting load. 2000fps and 1100ft.lbs. Accuracy load was 16.4gr on N110 (1900fps, 1002ft.lbs).

    Hope that helps.

  28. #78
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    Re: 300 BLK Load Data

    <div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: phreakmode</div><div class="ubbcode-body">19.7gr 1680
    Federal SR Match
    LC Brass, converted from .223
    155gr Lapua Scenar, HbN coated
    16&quot; bolt action, 1-8&quot; Twist
    Wind at zero mph, 102f, 27% RH

    Group was a bit tough to shoot using an H25 reticle, reticle was thick enough to completely obscure the shoot and see dot.

    </div></div>


    Damn phreak that is a .5 inch load at nearly 200 yds? That is sweet.
    "So long as men live together on earth and need means to deal with one another – their only substitute, if they abandon money, is the muzzle of a gun."-Ayn Rand

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    Re: 300 BLK Load Data

    <div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Sami</div><div class="ubbcode-body">I have used H4198 with 125gr TNT. It is very similar to N110's burn rate. I have gone up to 17gr with no signs of over pressure. BLK load development is on hold until deer season ends but I would start from 15.5gr of N110 and work up from there.

    Sierra states 13.7 - 17.7gr of N110 for their 125gr bullets (SPT &amp; HP/FN), with 17.7 being the maximum load and their recommended hunting load. 2000fps and 1100ft.lbs. Accuracy load was 16.4gr on N110 (1900fps, 1002ft.lbs).

    Hope that helps. </div></div>

    It helps a lot. I would also like to ask for proper OAL for this bullet and how much it affects the pressure? Could too deep or too long insert cause overpressures?

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    Re: 300 BLK Load Data

    <div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: silenshot</div><div class="ubbcode-body">It helps a lot. I would also like to ask for proper OAL for this bullet and how much it affects the pressure? Could too deep or too long insert cause overpressures? </div></div>
    I don't have my reload data at hand but since it was for a AR15, I seated them maximum length for AR15 magazine to feed. If you're shooting bolt action, I would recommend seating as far out as possible, close to touching the lands.

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    Re: 300 BLK Load Data

    Ok great, thanks! I am running on AR15 platform so I will test it out.

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    Re: 300 BLK Load Data

    Ok,

    I've tested some loads from 8.8 to 9.4 grains of N110 with silencer using 8&quot; barrel with noveske, but the rifle won't cycle. What do you say, could an adjustable gas port with possible enlargement of the gas hole solve the problem?

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    Re: 300 BLK Load Data

    <div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: silenshot</div><div class="ubbcode-body">Ok,

    I've tested some loads from 8.8 to 9.4 grains of N110 with silencer using 8&quot; barrel with noveske, but the rifle won't cycle. What do you say, could an adjustable gas port with possible enlargement of the gas hole solve the problem? </div></div>
    If you plan to run only subsonic then just drill the gas hole a bit bigger. If you plan to run supersonic as well, then add adjustable block. I drilled my Fireball barrel with 7/64 drill bit and that took care of the cycling problem.

  34. #84
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    Re: 300 BLK Load Data

    Tag for info soon
    No mercy, no prisoners!

    Had 5560 posts pre change with hundreds of good deals done...........

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    Re: 300 BLK Load Data

    Factory Noveske AR 10&quot; 300BLK Rogue Hunter. 1:8 twist Pistol length gas system. All groups were shot over a CED M2 Chrono with IR screens. Temp was 40F, at sealevel.

    Optic was a Trijicon RMR 01 red dot optic with 4 MOA dot. My setup is more for quick target acquisition not surgical precision so my expectations for accuracy were not that of a bolt gun with 25x optics.

    Supersonic Rounds UNsuppressed.

    All brass is converted LC 5.56 brass from bradswarehouse.com
    Primer: CCI 400
    Bullet: 110gr Hornady VMax
    OAL: 2.000&quot;
    Powder: 18.5gr H110
    10 shot average 2042, Hi 2086, Low 1990, ES 96, SD 28

    Brass, Primer, OAL, same as above 19.0gr H110
    5 shot average 2127, Hi 2138, Low 2112, ES 26, SD 10.1

    Brass, Primer, OAL, same as above 19.5gr H110
    5 shot average 2195, Hi 2217, Low 2171, ES 46, SD 15.5

    All supersonic loads showed good accuracy potential (as much as I expected with a 4 MOA dot). I would not go past 19.5 grains as it looked like the primers were wanting to just start to flatten some. Within 100 yards in the woods pigs are in trouble.

    Subsonic loads shot through same weapon with AAC SDN-6 can.

    Converted LC 5.56
    Primer: CCI 400
    Bullet: 220gr SMK
    OAL: 2.120&quot;
    Powder: 11.4gr Accurate 1680
    3 shots 954, 964, 994

    Converted LC 5.56
    Primer: CCI 400
    Bullet: 220gr SMK
    OAL: 2.120&quot;
    Powder: 11.6gr Accurate 1680
    5 shots 1013, 992, 1024, 995, 997

    Converted LC 5.56
    Primer: CCI 400
    Bullet: 220gr SMK
    OAL: 2.120&quot;
    Powder: 11.8gr Accurate 1680
    5 shots 1048, 1017, 1025, 1029, 1049

    Converted LC 5.56
    Primer: CCI 400
    Bullet: 220gr SMK
    OAL: 2.120&quot;
    Powder: 12.0gr Accurate 1680
    5 shots 1002, 1024, 1021, 1023, 1015

    I have no idea why 12.0 grains averaged lower than 11.8 but that is what the numbers said. There was defenatly some indication that the charges lower than 11.8gr were not stable. You could tell that the holes were not round. Both 11.8 and 12.0 grains the bullets appeared to be stable at 25 yards and showed the best accuracy.
    The only shot that counts is the one you are about to take.


  36. #86
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    Re: 300 BLK Load Data

    Why is there such a large discrepancy in the reloading die pricing?

  37. #87
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    Re: 300 BLK Load Data

    Is accurate 1680 the same thing mentioned by aac as aa1680?

    Thanks

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    Re: 300 BLK Load Data

    <div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Tenaja</div><div class="ubbcode-body">Is accurate 1680 the same thing mentioned by aac as aa1680?

    Thanks </div></div>
    Yes...
    AA stands for Accurate Arms
    "The Constitution is not an instrument for the government to restrain the people, it is an instrument for the people to restrain the government."
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  39. #89
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    Re: 300 BLK Load Data

    <div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: gumby223</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: jdberry</div><div class="ubbcode-body">Anyone tried Berry's plated bullets? The 110's are $108 per 1000. </div></div>

    I'm curious about this as well. Anyone have any info on this? </div></div>

    They did not work for me. Groups were 4 ft. at 100 yards. The AR puts a nice crease in them when they feed, and I think the jacket may be tearing off at some point. I tried a few loads in the 1600 fps range with the same results. I've got a few hundred of them, so I may try them again some day. They may work with ~5 grains of Trailboss for a super quiet subsonic load, but definitely will not cycle an AR. That will be the first load I try with them if I give them a shot again.
    -Dan

  40. #90
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    Re: 300 BLK Load Data

    Tag for info.
    I'm working on loading 125 OTM and 150 FMJ with H110. It will be a while before I can figure out which bullet will be the best for my Noveske 9&quot; barrel.

  41. #91
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    Re: 300 BLK Load Data

    <div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Barney88PDC</div><div class="ubbcode-body">Factory Noveske AR 10&quot; 300BLK Rogue Hunter. 1:8 twist Pistol length gas system. All groups were shot over a CED M2 Chrono with IR screens. Temp was 40F, at sealevel.

    Optic was a Trijicon RMR 01 red dot optic with 4 MOA dot. My setup is more for quick target acquisition not surgical precision so my expectations for accuracy were not that of a bolt gun with 25x optics.

    Supersonic Rounds UNsuppressed.

    All brass is converted LC 5.56 brass from bradswarehouse.com
    Primer: CCI 400
    Bullet: 110gr Hornady VMax
    OAL: 2.000&quot;
    Powder: 18.5gr H110
    10 shot average 2042, Hi 2086, Low 1990, ES 96, SD 28

    Brass, Primer, OAL, same as above 19.0gr H110
    5 shot average 2127, Hi 2138, Low 2112, ES 26, SD 10.1

    Brass, Primer, OAL, same as above 19.5gr H110
    5 shot average 2195, Hi 2217, Low 2171, ES 46, SD 15.5

    All supersonic loads showed good accuracy potential (as much as I expected with a 4 MOA dot). I would not go past 19.5 grains as it looked like the primers were wanting to just start to flatten some. Within 100 yards in the woods pigs are in trouble.

    Subsonic loads shot through same weapon with AAC SDN-6 can.

    Converted LC 5.56
    Primer: CCI 400
    Bullet: 220gr SMK
    OAL: 2.120&quot;
    Powder: 11.4gr Accurate 1680
    3 shots 954, 964, 994

    Converted LC 5.56
    Primer: CCI 400
    Bullet: 220gr SMK
    OAL: 2.120&quot;
    Powder: 11.6gr Accurate 1680
    5 shots 1013, 992, 1024, 995, 997

    Converted LC 5.56
    Primer: CCI 400
    Bullet: 220gr SMK
    OAL: 2.120&quot;
    Powder: 11.8gr Accurate 1680
    5 shots 1048, 1017, 1025, 1029, 1049

    Converted LC 5.56
    Primer: CCI 400
    Bullet: 220gr SMK
    OAL: 2.120&quot;
    Powder: 12.0gr Accurate 1680
    5 shots 1002, 1024, 1021, 1023, 1015

    I have no idea why 12.0 grains averaged lower than 11.8 but that is what the numbers said. There was defenatly some indication that the charges lower than 11.8gr were not stable. You could tell that the holes were not round. Both 11.8 and 12.0 grains the bullets appeared to be stable at 25 yards and showed the best accuracy. </div></div>

    I have the same upper as you do and I am trying to find my subsonic load as well. I am surprised though that this upper needs close to 12 grains of AA1680 to get close to sonic.
    Never claim to be expert in anything.....

  42. #92
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    Re: 300 BLK Load Data

    I have a Model 1 Sales 10.5&quot; SBR in .300/221, and using 220gr SMKs, I found that 8gr &amp; up to 8.8gr of AA#9 would cycle my AR, AND be subsonic. I researched extensively on Quarterbore's Forums, but that site is down now. A major factor in cycling these 10&quot; AR's is gas port diameter, which strangely, has not been discussed in this thread,. . .unless I missed it. I had to bore my gas port out to .086&quot;
    I have used 18gr of W296 w/147gr FMJs &amp; got 1950fps, but will back off to 17-17.5gr, until I install an adjustable gas block. At, or slightly above max, this load seems to cycle really agressively, and is hard on the gun &amp; brass.

  43. #93
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    Re: 300 BLK Load Data

    Hey Matt, I have a couple questions about your 10.5&quot; Mod 1 upper.

    Did it come with that length because I'm only showing 16&quot; lengths on their site...

    Did you have to rebore the diameter yourself on the gas block? From what I understand a pistol gas system is the best for functioning with and without a can, and with full velocity and subs.

    How is accuracy on your upper?

    Thanks bro!

    John
    Everyone has an art, you know, food, paint whatever. Creecy's art is death. And he's about to paint his masterpiece. ~Christopher Walken

  44. #94
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    Re: 300 BLK Load Data

    Hey John, I got the upper about 5 years ago, I believe they were selling them to people with their form 1 paperwork. I think I do remember them being advertised on the site. I never at any time modified the gas block, I only modified the barrel by opening the gas port to .086&quot;. It is a pistol length gas system. Best accuracy was with 8.8gr AA#9 under 220gr Sierra Match Kings, consistently MOA &amp; under.

  45. #95
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    Re: 300 BLK Load Data

    <div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: turbohardtop</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Barney88PDC</div><div class="ubbcode-body">Factory Noveske AR 10&quot; 300BLK Rogue Hunter. 1:8 twist Pistol length gas system. All groups were shot over a CED M2 Chrono with IR screens. Temp was 40F, at sealevel.

    Optic was a Trijicon RMR 01 red dot optic with 4 MOA dot. My setup is more for quick target acquisition not surgical precision so my expectations for accuracy were not that of a bolt gun with 25x optics.

    Supersonic Rounds UNsuppressed.

    All brass is converted LC 5.56 brass from bradswarehouse.com
    Primer: CCI 400
    Bullet: 110gr Hornady VMax
    OAL: 2.000&quot;
    Powder: 18.5gr H110
    10 shot average 2042, Hi 2086, Low 1990, ES 96, SD 28

    Brass, Primer, OAL, same as above 19.0gr H110
    5 shot average 2127, Hi 2138, Low 2112, ES 26, SD 10.1

    Brass, Primer, OAL, same as above 19.5gr H110
    5 shot average 2195, Hi 2217, Low 2171, ES 46, SD 15.5

    All supersonic loads showed good accuracy potential (as much as I expected with a 4 MOA dot). I would not go past 19.5 grains as it looked like the primers were wanting to just start to flatten some. Within 100 yards in the woods pigs are in trouble.

    Subsonic loads shot through same weapon with AAC SDN-6 can.

    Converted LC 5.56
    Primer: CCI 400
    Bullet: 220gr SMK
    OAL: 2.120&quot;
    Powder: 11.4gr Accurate 1680
    3 shots 954, 964, 994

    Converted LC 5.56
    Primer: CCI 400
    Bullet: 220gr SMK
    OAL: 2.120&quot;
    Powder: 11.6gr Accurate 1680
    5 shots 1013, 992, 1024, 995, 997

    Converted LC 5.56
    Primer: CCI 400
    Bullet: 220gr SMK
    OAL: 2.120&quot;
    Powder: 11.8gr Accurate 1680
    5 shots 1048, 1017, 1025, 1029, 1049

    Converted LC 5.56
    Primer: CCI 400
    Bullet: 220gr SMK
    OAL: 2.120&quot;
    Powder: 12.0gr Accurate 1680
    5 shots 1002, 1024, 1021, 1023, 1015

    I have no idea why 12.0 grains averaged lower than 11.8 but that is what the numbers said. There was defenatly some indication that the charges lower than 11.8gr were not stable. You could tell that the holes were not round. Both 11.8 and 12.0 grains the bullets appeared to be stable at 25 yards and showed the best accuracy. </div></div>

    I have the same upper as you do and I am trying to find my subsonic load as well. I am surprised though that this upper needs close to 12 grains of AA1680 to get close to sonic. </div></div>


    8in Noveske 1:8 twist
    208 Hornady Amax
    11.8g A1680 ave.
    COAL (need to check, but fits in PMAG)
    Lake city once fired brass
    Win Small Rifle Primer (it's what I had on hand).
    Velocity at 1043fps. for an n=20 shots
    Accuracy, about 1.5in at 100 yards for 5 shots


    Action will cycle/lock on empty magazine with a Gemtech Sandstorm and one weight removed from standard buffer

    BTW the Hornady Whisper Ammunition (208 AMax)was around 950fps and would not consitently cycle the action with a suppressor

    "if I don't have a good shot it doesn't matter whether I'm using a 5.56, .357, .44, or a .416 Super Short Ackley Improved Magnum Rimmed Reticulated Retaliated Rebated Super Bullet of Justice pushing 4500 fps with a 1337 grain blah blah blah blah......" (JohnnyC) quote from another site



  46. #96
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    Re: 300 BLK Load Data

    Recently put together an AR and love the subsonics.

    Noveske 16&quot; 1:7 barrel
    Pistol length gas
    Standard buffer and spring
    OPSINC 12th suppressor
    Lil Gun powder
    CCI BR4 primer
    Winchester modified 223 brass
    Hornady 208 AMAX
    COL 2.140

    8.0gr &gt;&gt;&gt;1092fps (1 MOA @ 100yds w/Bushnell zoom dot)
    7.8gr &gt;&gt;&gt;1060fps

    I posted this on the Blackout forum as well.

    Working on figuring out the AR loads for the light bullets now.

  47. #97
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    Re: 300 BLK Load Data

    Same as above w/208's &amp; Lil Gun but using LC brass fm Wildcat
    The magnetospeed wouldn't read all the rounds but everything cycled and locked back
    3 ea.:

    6.5gr 925fps (only one read)
    7.0gr 1014,1016,1015

    tried some 4064 w/ 110 VMAX all cycled but no lock back and only one read
    LC brass and rest same as previous post

    6.0 gr 1016fps
    7.0 gr no read but actually sounded quieter than the 6gr load

    forgot to include in spec: Carbine buffer w/ regular spring. The carbine spring is on the way.

  48. #98
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    Re: 300 BLK Load Data

    Any one started reloading .308 dia. 125 gr. HP MatchKing yet? Need to know what loads working. Thanks

  49. #99
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    Re: 300 BLK Load Data

    tag
    Fill your hand you son of a bitch. Overkill is underrated.

  50. #100
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    Re: 300 BLK Load Data

    178amax
    LC brass
    9gr AA1680
    Cci 400

    Subsonic and cycles with bolt lock back.
    Stable with 2.5&quot; group 50 yd offhand with irons. Nice and quiet

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