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Thread: Polymer tip ammo in your AR?

  1. #11
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    Quote Originally Posted by markm View Post
    I agree. Pressure shouldn't be an issue unless you're really running a stout load already. That extra jump to the lands bleeds off a sliver of initial pressure, so I'd just spin that seater down and give it go.
    Yup. Usually itís not a problem unless itís super-deep. I have seen pressure go up with this process, but typically they were compressed at the longer coal.


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  2. #12
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    I ran two identical loads with the exception of the bullet... 1. was 77 gr OTM, and 2. was 77 gr TMK. The TMKs seat much deeper to get them to mag length. But when I chrono'd both of them, I was shocked to see almost identical velocities. I expected to see a boost on the deeper seated bullet, but it wasn't there. Kind of interesting to me.
    "You people have too much time on your hands." - scottryan

  3. #13
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    Thanks guys! Problem solved...

    I changed the COAL to 2.20” and was able to shoot 50 rounds with no broken tips. One 10 round magazine was a mag dump with no issues.

    -Geo
    Live free or die trying!

  4. #14
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    Quote Originally Posted by 5.56Geo View Post
    Thanks guys! Problem solved...

    I changed the COAL to 2.20Ē and was able to shoot 50 rounds with no broken tips. One 10 round magazine was a mag dump with no issues.

    -Geo
    Awesome. Glad it solved the issue for you!


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  5. #15
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    Nice!
    "You people have too much time on your hands." - scottryan

  6. #16
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    Good info for the knowledge base. Thanks OP.
    2012 National Zumba Endurance Champion
    الدهون القاع الفتيات لك جعل العالم هزاز جولة الذهاب

  7. #17
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    I had a Mini-14. They are said to "feed anything. " Domeone gave me a box of Hornady plastic tips. It was dreadful. Tips shattered and rounds failed to feed. Maybe M4 feed ramps are better, but I'd be careful in a duty gun

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