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  1. woostri

    Bullet Failure Midair disintegration

    Re: Bullet Failure Midair disintegration Resurrecting this post from a long time ago. I've been using 115gr DTAKs, boron nitride coated since 2010. I still have: Not enough sense to read and follow the rules of the site so i think I will take a little vacation.
  2. woostri

    Bullet Failure Midair disintegration

    Re: Bullet Failure Midair disintegration I thought the rpm's were the problem at first, but check my last post. Bullets measured at 3180 fps. All failed bullets and ones that made it down range were the same velocity. Only difference was whether I had a cool barrel or whether I got it nice...
  3. woostri

    Bullet Failure Midair disintegration

    Re: Bullet Failure Midair disintegration Finally got around to testing this bullet failure issue. After having read some test articles provided by Berger when they had similar issues with some of their VLD lines. Aparently it's not so much a velocity/rate of twist problem as it is a friction...
  4. woostri

    Bullet Failure Midair disintegration

    Re: Bullet Failure Midair disintegration Yeah I thought about bringing a cooler to the next f-class match. That would work but I want a more stable option as well (after I shoot up the other 105gr Amax of course). Looking into the 115gr DTAC, running it perhaps at 3000fps. I know Tubbs won...
  5. woostri

    Bullet Failure Midair disintegration

    Re: Bullet Failure Midair disintegration Yep, assuming the hot conditions upped my 3180 to 3250fps that would make for 292,500rpm. Dang. I did email hornady for specifics on a-max rpm limits, maybe they'll come back with these specs again for confirmation. Back to the drawing board for load...
  6. woostri

    Bullet Failure Midair disintegration

    Ingredients for bullets coming apart. 26" Pacnor 3 groove 6mm Ackley Improved 1:8 twist. 51.4 grains of H1000 behind a 105gr Hornady Amax. No shade, 85 degrees 25 shots into a 45 shot string in an F-class practice match. No impacts into the berm and after too many of these unexplained...
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