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Thread: MK262 mod 1 load data help

  1. #11
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    Ramshot TAC at around 24 gr will give you about 100fps over varget with only a slight loss in accuracy.

  2. #12
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    Thanks, I have found that Tac and 8208xbr work well for me, I have used varget and it doesn't meter as well as 8208 and doesn't give me the velocity I'm looking for. I'm looking for velocity and down range accuracy. So far both have worked well(tac and 8208) I'm just stepping up on the charges to see if anything changes down range, or I get pressure signs. My main goal is to find out other results people have had with powders I haven't used that may come close to what I'm getting.
    Last edited by Clemonsds; 09-28-14 at 20:32.

  3. #13
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    I just received two new boxes (red box) of black hills 5.56 77 OTM (MK262 mod 1) and can't wait to shoot them.

    I was surprised that my chosen seating depth for my hand loads was the exact same as theirs (1.869" to ogive) but the powder is a ball powder which I didn't expect at a weight of 25.6 grains(hot). I have not shot them yet to see how they perform in my rifle, but soon enough I will and will come back to tell my results.

  4. #14
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    I just received two new boxes (red box) of black hills 5.56 77 OTM (MK262 mod 1) and can't wait to shoot them.

    I was surprised that my chosen seating depth for my hand loads was the exact same as theirs (1.869" to ogive) but the powder is a ball powder which I didn't expect at a weight of 25.6 grains. I have not shot them yet to see how they perform in my rifle, but soon enough I will and will come back to tell my results.

  5. #15
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    I'm curious to see what your results are with the MK262. I never could get that load to group better than an 1MOA with my 16in DDM4. I had to go with a lighter bullet (75gr) and drop velocity down to 2600fps, but now 0.25-0.30 MOA is easily obtained when I do my part. Was the consistency of the seating depth of the Black Hills on par with your hand loads?

  6. #16
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    I'm shooting out of a Wilson combat 18" spr barrel with a 1:7

    My hand loads are .628"@100 yards when I do my part. Velocity is 2,702 FPS

    Their seating depth was within +/- .001 throughout the rounds I have, I randomly chose and didn't measure them
    all. They are out of the same lot.

    My hand loads are as consistent as theirs for seating depth.

    As soon as I shoot me a group of 10-20 I will post the results, hope I do my part.
    Last edited by Clemonsds; 10-03-14 at 20:59.

  7. #17
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    24.0 8208xbr behind a 77gr Nosler or SMK gives 2760fps and ~3/4 MOA from my 18" Compass Lake SPR. 23.0 (corrected from initial typo) was very slightly better accuracy but I'd rather have the 150+ fps. No pressure signs.
    Last edited by Greentimber; 10-12-14 at 01:55. Reason: typo

  8. #18
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    You loaded up 77's with 26.0 of XBR??? That's gotta be way beyond over pressure! No way in hell I'd be shooting that!

  9. #19
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    Quote Originally Posted by Whiskey&beer View Post
    You loaded up 77's with 26.0 of XBR??? That's gotta be way beyond over pressure! No way in hell I'd be shooting that!
    That has to be a typo. I've got blown primers and case head swipes at 23.8.
    "What would a $2,000 Geissele Super Duty do that a $500 PSA door buster on Black Friday couldn't do?" - Stopsign32v

  10. #20
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    That's what I'm thinking it was, but whatever it is I'm not loading that hot.

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