Hk 93 tumbled M855 at 50yds
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Thread: Hk 93 tumbled M855 at 50yds

  1. #1
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    Default Hk 93 tumbled M855 at 50yds

    I recently got a ACOG to put on my 93 and shot roughly 30 rounds at 50 yeards that ALL keyholed and where around the entire plate. I never saw tumbling so consistently. I switched ammo and successfully zeroed at 100 yards with a grouping of 3/4 inch on the bullseye. Why did the Federal M855 tumble so badly? Everything had been cleaned, the flash hider was secure and the acog mount secured. I have pictures of more plates with the same sideways bullet.
    Attached Thumbnails Attached Thumbnails Hk 93 tumbled M855 at 50yds-c5907d47-9e6a-48bd-9da1-d3c46e9b8a07_1541896682341.jpeg  

  2. #2
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    I believe the 93 is 1/12 twist and those 62gr. need 1/9 or 1/7 to stabilize it.

    Use 193 or 55gr and see what happens.



    Sent from my SM-G950U using Tapatalk
    kbinmt likes this.

  3. #3
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    Quote Originally Posted by Prdubi View Post
    I believe the 93 is 1/12 twist and those 62gr. need 1/9 or 1/7 to stabilize it.

    Use 193 or 55gr and see what happens.



    Sent from my SM-G950U using Tapatalk
    Yes, I just fugured out it was a 1/12 i didn’t know 62gr needs 1/9 or 1/7. I did sight it in successfully with 55rg ball.

  4. #4
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    The 93 was fielded before heavy 5.56 was born.

    DG
    We all come here to drink from the fountain of madness.

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