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Thread: .308 w/ IMR 4064 and 175 SMK

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    .308 w/ IMR 4064 and 175 SMK

    Hey guys... I was wondering what charge you all are using with the IMR 4064 and 175 SMK's

    I have been exclusively using RELOADER 15 at 43 grns... but due to the shortage... I came across IMR 4064 and going to give it a shot.

    Let me know what you are using and how well it shoots.

    Thanks,
    Matt (LEO SOUTH GA.)

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    My load was 42.4 grains loaded to approximately 2.285" and it was accurate at 100 yards with a 24" barrel. When I chorono'd it, the extreme spread was nearly 100 FPS. It was early in my handloading, so my experience was low and I may have been doing something to affect it and not know it, but that is a lot of variance for me. That kind of variance won't show much at 100, but will definitely show at longer ranges.
    Welcome to Tennessee, the patron state of shootin' stuff. "Shooter"

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    43 gr on my milspec 5r 24" bughole here n there on 100 pretty good. I hace not chronoed it tho.. but no preasure sign

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    I run 41.7gr in LC brass. Same load as the Mk 316 ammo. It shoots bug holes with a couple of my bolt guns and M1A.
    Angry Wall of Meat

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    From another thread on 4064. The poster has discovered the data for Federal Gold Medal Match.
    buoux556 and Dshooter like this.

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    43.3gr in LC13 brass, with Tula primers is a *touch* too much in a friends SSG3000, though it shoots beautifully there. Average MV is 2695fps, measured via magnetospeed.

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    Quote Originally Posted by Mattrmvpd View Post
    Hey guys... I was wondering what charge you all are using with the IMR 4064 and 175 SMK's

    I have been exclusively using RELOADER 15 at 43 grns... but due to the shortage... I came across IMR 4064 and going to give it a shot.

    Let me know what you are using and how well it shoots.

    Thanks,
    Matt (LEO SOUTH GA.)
    42.5 4064 should be about the same as 43 RL15

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    Gap-10 using 42gr IMR4064 the the 175smk in Lapua brass 2.800 COAL.

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    42.7 grains topped off with a 178 BHP (moly) ai 2.813 COAL in Hornady brass gives me 2566 fps from a 18 inch AR-10T. It also gives me a woddy everytime I shoot these loads.

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    Thanks guys!! I was able to get 12 poinds of IMR 4064..... Sooo im off to reload some.

    Thanks
    Matt
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    43.0 grains of IMR 4064 topped with a 175 SMK in LC LR brass shoots great out of my GAP Rock. Average velocity is 2713 fps out of a 22" barrel.
    Hookman

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    What's your stick?
    I used WW brass and a 175 seated out to the lands of a factory R700 44.3 grains.

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    42.2gr, SRA 175SMK, Rem brass, Fed 210M, 2.815" OAL. M1A/M14
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    My stick is a GAP SCLE with 22" Rock 5r barrel built by Eric Reid.
    Hookman

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    Quote Originally Posted by Hookman View Post
    43.0 grains of IMR 4064 topped with a 175 SMK in LC LR brass shoots great out of my GAP Rock. Average velocity is 2713 fps out of a 22" barrel.
    How does the pressure signs look with this load ? Is the bolt sticky in any way ?

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    I am getting slightly flattened primers but not a sticky bolt lift or ejector marks. Both 41.5 and 43.0 shot great.




    Quote Originally Posted by Onehunglow View Post
    How does the pressure signs look with this load ? Is the bolt sticky in any way ?
    Hookman

    A well regulated militia, being necessary to the security of a free state, the right of the people to keep and bear arms, shall not be infringed.

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    Great info. I'm using TAC now but it kinda bit me in the last match with high temperatures. I think the 4064 will be more stable.

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    This is a group just fired last weekend with Berger 185 VLDs and 4064. 41 grains of powder with CCI primers. We will go hotter in the next couple of weeks and chrono it. Will update. The rifle is a Rock Creek M40 contour 1-10twist.

    We can put up some videos with 175 gr Scenar L's and SMKs

    390fe likes this.

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    Here are some OCW targets I shot from an 18" JP gas gun:


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    What Emilio said I'm abig fan of it

    41.7 IMR4064
    L/C Brass
    Winchester primer
    2.800 OAL

    26" Remington 700P 2620 fps
    Everyone wants the title but nobody wants to pay the price.

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    AIAE MKIII 308
    24" Lothar Walther 1/12 twist

    175g SMK
    Win Brass
    OAL 2.820
    210m primer
    IMR 4064

    Did an OCW and found a low node at 42.3 and a high node at 43.2.
    42.3@ 2625fps
    43.2@ 2710fps

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    41.7gr of 4064 w/175 is about 2625fps and stays supersonic to 1000yards. In a FC case.

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    I don't shoot 175 SMK any more, but have switched to 178gr Amax instead. Load data pretty much remained the same, though.

    I found 2 nodes for my 20" barrel with Lapua brass. 42gr 4064 at 2.845" COL = 2500fps. Very accurate but not quite fast enough for 1000 yards. Found the next faster node at 43.8 grains = 2600fps. Just as accurate as the slower node.
    Last edited by gigamortis; 07-03-2014 at 09:43 PM.

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    42.2 grains 4064, LC LR 07 brass trimmed to 2.10, 175 nosler cc,Fiocchi LR primer, loaded to 2.810. This load shoots 1 hole at 100 and best 3 shot at 200 was under half inch shooting off bags. That's out of remington 700 sps tactical on a B&C medalist stock stock everything else..

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    41.8 of IMR 4064
    175 Matchking
    Fed 210M
    FC gold Medal Brass

    Duplicated MK 318 sniper ammo
    Last edited by Alaska; 11-13-2013 at 08:13 PM.

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    What kind of groups are you getting with this rifle as I'm starting to load for the same? Thanks!

    Quote Originally Posted by turbo54 View Post
    43.3gr in LC13 brass, with Tula primers is a *touch* too much in a friends SSG3000, though it shoots beautifully there. Average MV is 2695fps, measured via magnetospeed.

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    I tried posting a completely new post with my setup, but for some reason it hasn't actually hit the boards yet. Here is the the load test we developed using 175gr SMK's, IMR 4064, once fired Hornady brass, and Remington primers. Shooting out of my Surgeon 591 SA with 22" Bartlein barrel 5R 1:11RH. All shot at 50yds.

    and what we decided on was 43.1grains. Pretty sure I pulled the 42.5gr grouping.


    We took it out to 800m and 1000m yesterday. Fairly pleased with the results.



    Saw a 3" spread at 800m.


    With a 4" spread at 1000m.

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    Quote Originally Posted by 2clicks View Post
    What Emilio said I'm abig fan of it

    41.7 IMR4064
    L/C Brass
    Winchester primer
    2.800 OAL

    26" Remington 700P 2620 fps
    This is interesting, I'm trying to come up with a load for my Rem 700 SPS-V 26" and shot 41.8 IMR 4064, LC LR brass, CCI200 primer, 2.800 OAL and got an average 2547 FPS.

    Quote Originally Posted by Thumper580 View Post
    41.7gr of 4064 w/175 is about 2625fps and stays supersonic to 1000yards. In a FC case.
    Shooting 41.7 IMR 4064, FC brass, F210M, 2.800 OAL my average of 5 was 2584 FPS with the same rifle.

    Both using 175 SMK's and the temp was 58 degrees.
    Last edited by M36; 01-07-2014 at 10:55 AM.
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    Quote Originally Posted by davebl View Post
    Here are some OCW targets I shot from an 18" JP gas gun:


    Davebl. What charge weight did you pick on your OCW test?

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    Quote Originally Posted by Thumper580 View Post
    Davebl. What charge weight did you pick on your OCW test?
    41.5 shoots pretty good, its a slow load though.

    Truthfully, I abandoned the 175 SMK for this rifle and have been working on 178 Amax loads. I save the SMK for my bolt gun now.

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    I'd be curious to know what you end up with. Thanks.

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    Quote Originally Posted by Thumper580 View Post
    I'd be curious to know what you end up with. Thanks.
    I'll report back on Friday, after some more testing. I switched to the Amax to have a better hunting round, and I had a couple hundred of them already....

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    Quote Originally Posted by davebl View Post
    Here are some OCW targets I shot from an 18" JP gas gun:

    Very Interesting!

    As the powder charge increases, the point of impact decreases?

    45.8 is hitting at what looks to be 1" lower than 41.5, that is some weird stuff that a load which is 4.3 grains hotter is impacting that much lower?

    Those charge weights versus points of impact are the about the exact opposite of what I would expect to see.

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    Quote Originally Posted by LRShooter101 View Post
    Very Interesting!

    As the powder charge increases, the point of impact decreases?

    45.8 is hitting at what looks to be 1" lower than 41.5, that is some weird stuff that a load which is 4.3 grains hotter is impacting that much lower?

    Those charge weights versus points of impact are the about the exact opposite of what I would expect to see.
    Yep. I'm assuming that its due to barrel harmonics.

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    I don't want to hijack this thread but didn't feel like starting a new thread about the same powder and bullets. I did an OCW test using 41.4 to 43 grains of 4064 in .2 grain increments. I seems that my nodes are at 41.6 and 43+ grains since my group is getting closer together at 43 but I didn't test anything higher. However, I'm starting to see some pressure signs at 43 grains, with a slightly flattened primer and just slightly more force required on the bolt lift. I want to try 43.2 to see if my groups get any smaller. Do you think it safe to do so? Could I get more velocity without the pressure signs if I switch brass? I'm only using federal since I have a couple of hundred from shooting FGMM

    Federal brass
    SMK 175
    WLR primers
    2.820 COAL

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    I found 43.5 works best with both the 168gr & 175gr SMK BTHP bullets at least very effective to 500 yards.

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    I ve been over 44.2 with no issue, in my rifle with 175 smk and lapua brass. I will say this, find a node and explore seating depth, get a chamber gauge if you don't have one.

    Quote Originally Posted by rockbox View Post
    I don't want to hijack this thread but didn't feel like starting a new thread about the same powder and bullets. I did an OCW test using 41.4 to 43 grains of 4064 in .2 grain increments. I seems that my nodes are at 41.6 and 43+ grains since my group is getting closer together at 43 but I didn't test anything higher. However, I'm starting to see some pressure signs at 43 grains, with a slightly flattened primer and just slightly more force required on the bolt lift. I want to try 43.2 to see if my groups get any smaller. Do you think it safe to do so? Could I get more velocity without the pressure signs if I switch brass? I'm only using federal since I have a couple of hundred from shooting FGMM

    Federal brass
    SMK 175
    WLR primers
    2.820 COAL
    Hoka Hey

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    My IMR 4064 Load for .308 Win

    I've been using the load below with my .308...24" Heavy Barrel...1/10 Twist...and getting .5 MOA to Sub .5 MOA Groups...all 3 rounds touching at 100 yards. I hit a 4" steel plate at 1000 yards using this load.

    IMR 4064 - 42.8gr
    Once Shot, Fire-Formed, but Re-Neck Sized Brass, OAL - 2.010 (Remington Premier Gold Match Brass)
    CCI Large Rifle Primers #200
    Berger Long Range Target BT 175gr BC: G1 - .515, G7 - .264
    COAL - 2.840
    Muzzle Velocity - Avg. 2,675 fps

    photo.JPG
    Last edited by Rayza; 06-23-2014 at 08:58 AM.
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    42.2 IMR 4064 under a 175 SMK w/ Lapua brass is my go to for 1K shooting. Mil Spec M-24 w/ Rock barrel.
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    Lapua brass, 175 SMK, 42.2 grains IMR 4064. Seating depth is 2.795. Primer is Fed 210m.

    LC LR brass, 175 SMK, 41.0 grains IMR 4064. Seating depth is 2.795. Primer is Fed 210m.

    These are my standard loads. I have more than one 7.62x51 rifle, they all shoot this ammo.

    The LR cases are about 5 grains heavier than the Lapuas. With the charges above, they shoot into the same holes. I sort cases by weight; all the cases in a box of ammo are: Maximum weight - minimum weight = 1.0 grain or less.

    The attached photo is a 6-inch plate shot at 500 meters from a bipod and rear bag. I fired 15 times and hit it 11 times - I am kind of new to this whole bipod thing.
    Attached Images Attached Images
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    What kind of rifle bax?
    Hoka Hey

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    Quote Originally Posted by biner626 View Post
    From another thread on 4064. The poster has discovered the data for Federal Gold Medal Match.
    Very interesting.

    Has anyone in here ever pulled one of these factory cartridges and weighed powder? I did two of same lot (# P21N553) and recorded 43.74 to 43.76 (my scale runs by 0.02 grain).



    I am curious to know what others found powder weight at.

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    43.5 4064 with LC LR brass and Federal GM210m primers. load to 2.805.
    "Never start an argument with a man who can end you from another zip code"

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    Quote Originally Posted by Tristian19 View Post
    Very interesting.

    Has anyone in here ever pulled one of these factory cartridges and weighed powder? I did two of same lot (# P21N553) and recorded 43.74 to 43.76 (my scale runs by 0.02 grain).



    I am curious to know what others found powder weight at.
    Yes Dan Newberry. Look for the Thread. Sleuthing Gold Metal Match or something like that. It has all the info on there
    "When I pass, do not let my wife sell the guns for what I told her they cost" (SMDAVE)

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    Look at 918's pics on page 3, I mimic what he is getting in all the different brass and loads.

    Sleuthing the Federal Gold Medal match load... Mk 316 Mod 0?
    Hoka Hey

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    Two books every American should read:

    The Tavistock Institute of Human Relations - Shaping the Moral, Spiritual, Cultural, and Political Decline of the United States of America (a free PDF)

    The Creature From Jekyll Island - A Second look at the Federal Reserve (a free PDF)

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    shot these 2 steels yesterday, prone 600 yds, bipod, rearbag...this load also shoots ragged holes @ 100...i was too lazy to do load work up so i just copied the load data from the data sheet Dan Newberry posted and took it out and shot it.

    175 SMK factory 2nds
    41.7 gr 4064 (same dope as Fed GMM in my rifle)
    Federal Brass
    COAL 2.810"
    2550 fps out of my 18" CBI barrel



    engaged target with 2 rnds


    changed to another target and put 2 more rnds on another steel

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    Quote Originally Posted by Mattrmvpd View Post
    Hey guys... I was wondering what charge you all are using with the IMR 4064 and 175 SMK's

    I have been exclusively using RELOADER 15 at 43 grns... but due to the shortage... I came across IMR 4064 and going to give it a shot.

    Let me know what you are using and how well it shoots.

    Thanks,
    Matt (LEO SOUTH GA.)
    Man, just the opposite here, I just picked up an 8# IMR4064 because I can't find RELOADER 15. I think they should be close though.

    Cheers,

    George

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    175 smk 42.2 gr. 4064 Hornady Match brass 2.810 CCI 200

    168 smk 42.6 gr. 4064 Federal brass 2.810 CCI 200

    Rem 700 5R 11.25

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    Quote Originally Posted by davebl View Post
    Yep. I'm assuming that its due to barrel harmonics.
    Davebl, could it have something to do with the fact that the bullet crosses the scope line of sight twice? If you are zeroed at 100 and the bullet path is coming up to POA from below, and you increase the velocity, could it impact lower? I usually do load dev at 380 so the bullet is falling...higher velocities mean higher POI, but at 100 it would be pre-apex right? does that matter?

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