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Thread: 223 69 grn smk ar-15 16 inch ideas??????

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    223 69 grn smk ar-15 16 inch ideas??????

    I am starting to load for my LWRC with a 1/7 twist with a 16 inch barrel. I am wanting to shoot 69 smk (I have 2500). If you have any load data please let me know. I am looking for it to work in my AR so I would appreciate no bolt gun information.
    There is no such thing as luck, luck is when preperation meets opportunity... Knute Rockne

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    Sierra lists good info and brakes it down nicely for AR and bolt gun separately. Downloads on 4mmbr site easy way to find it.
    http://accurateshooter.net/Downloads/sierra223ar.pdf
    Duh, 4mmbr. That's 6mmbr of course.
    Last edited by Sporter II; 09-06-2013 at 06:12 AM.

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    sporterII thank you so much Thank you so much Thank you so much
    There is no such thing as luck, luck is when preperation meets opportunity... Knute Rockne

    Born the same date as Ronald Regan great to be me.....

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    I run that bullet in a 16" barrel. LC09 brass, Federal match primers, 25.8g Varget, 2.26 OAL. Avg vel is 2835fps.

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    69 gr Sierra MK
    25.5 grs VARGET
    RP commcl brass
    2.260" OCL
    BR-4

    2629 fps 16" LWRC M6A2

    Seems to shoot right at an inch. Just started load development for this gun.

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    Quote Originally Posted by FN in MT View Post
    69 gr Sierra MK
    25.5 grs VARGET
    RP commcl brass
    2.260" OCL
    BR-4

    2629 fps 16" LWRC M6A2

    Seems to shoot right at an inch. Just started load development for this gun.
    I run this load out of LC brass in my 20" bolt gun, and it shoots lights out, out to 500yds.
    "I'm your Huckleberry"
    -J.H. Holliday

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    I tried to get a good load for the same twist and in the end I ended up using 77gr. 1-7 was just a tad too fast for 69's. Then I ended up getting a RRA with a 1-8 and loaded up the 69's for it and WOW what a difference! .5 moa at 100 yards.

    I am not saying you should not load them, what i am saying is you may have a bit of a hard time finding a super sweet load at that twist rate so dont beat yourself up if you discover you are having a bit of difficulty with them. I do agree, this is a good load, but it never met my expectations out to 300 yards:

    69 gr Sierra MK
    25.5 grs VARGET
    RP commcl brass
    2.260" OCL
    BR-4

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    RP, PMC, or LC brass
    Any primer you want
    2.245" COAL

    26gr 2000MR
    23.6gr TAC
    24 or 25.3 varget
    23.5 H4895
    24gr AA2460
    23.2gr AA2230

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    69gr SMK
    H322, 22.9 grains
    Wolf small rifle primers
    Good brass

    Primers matters when your talking sub MOA. This load is sub MOA out of 7 different AR's. I changed to CCI primers and it opened up .5-1 inch on every gun. This load is half MOA in a couple guns.

    I have given this load data to several guys, every time it's lights out. Wolf is the best kept secret in primers. Also, you this powder flows better than Varget. You can load this as fast as your plinking ammo with precision results.

    Good luck.

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    Quote Originally Posted by Prebanpaul View Post
    I am starting to load for my LWRC with a 1/7 twist with a 16 inch barrel. I am wanting to shoot 69 smk (I have 2500). If you have any load data please let me know. I am looking for it to work in my AR so I would appreciate no bolt gun information.
    I have the same exact gun. I used the accuracy load from Sierra's manual for 69gr HPBT with 25.3gr Varget, LC87 Brass and CCI450s. I did do a lite neck turn on the brass to try and make my loads more concentric. But other than that, everything else was standard. My last range test on this load gave me Average to Center (ATC) group (13 shots) of .471" with SD of 21 and ES of 48 with velocity of 2840fps 12' from muzzle shot off bipod on the bench. I did have some fliers that made the group 1.6" but I'm still learning how to shoot this gun. I'm much better with a bolt gun. I'm in the process of trying heavier loads with Hornady 75gr and Berger 77gr bullets. I'll update when I have more info. So far this 69gr Sierra HPBT load is the best.


    Last edited by stu2; 09-07-2013 at 03:26 PM.
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    PBP,

    24" use VV N-140, 20" use VV N-135, 16" use VV N-133. Only for the 69 gr. SMKs. Clean, low flash, works best with Wind SR primers.

    HTH,
    DocB
    Play with it. See what happens. Carefully.

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    I've had really good luck with 25.0grs of AA2520 and CCI450s with the 69SMK out of my RRA 16 incher.

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    Thank you for all the information. I used a Dillon pocket swagger 600 to punch out the primer pockets. I then used the small base RCBS Carbide with crimp *(There ar series) I then loaded a load of 26 grains of Varget, and shot some rounds. I was averaging 1.06-1.08 5 shot groups. I shot 4 of these. I then changed up the load and shot a 25.5 grain Varget 2.62 OAL. Holly sh**, I was using 3 different brass (all range pick up and not the same brass in the 5 shot strand) and shot a .53 .38 .54 .. .26 inch 5 shot groups. It was insane. I am done with that. I am shooting a LWRC DEA model with a 16 inch barrel 1-7 twist I added a Timney trigger and this was shot with a tac invotations suppressor. scope was a sfp vortex viper pst 4x16 moa/moa
    There is no such thing as luck, luck is when preperation meets opportunity... Knute Rockne

    Born the same date as Ronald Regan great to be me.....

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    Paul, are you dyslexic?
    Does sound like you have your load.

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    I had good luck with 2520 and 69gr smk's or nosler's.

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    16" molly coated barrel, 23 grain IMR 8208 xbr, CCI primer, range pickup brass, 2,570 avg. FPS, .19 ES

    IMR 4895, CFE both work great as well but you cant beat 8208 in my opinion run it under 175 grain .308 with great results also.
    Champaign wants and Beer wages.


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    I shoot my stag 5.56 16" 1:7 twist with 60gr smk's loaded with 25.5g of varget, cci primers, I am getting sub moa at 100 yards with this load.

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    I like them with w748.
    Romans 8:28

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    23.5 IMR4895
    24.5 RL15
    24 W748
    in
    L/C Brass
    winchester primers

    They all work nicely, These days i only shoot 55gr pills out of my shorty AR's. The 68's, 69's and heavier use in 20' inch or longer AR's
    Everyone wants the title but nobody wants to pay the price.