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  1. C

    JBM Rookie: Issues

    I'm using JBM for the iPhone (FTE version) and I am firing 250gr Lapua Lockbase through a suppressed PGW Timberwolf with a Schmidt and Bender pm2 mRad reticle. For the life of me, I can't get the program to spit out a trajectory chart that matches up to my dope. I chono'd 10 rounds and got an...
  2. C

    Muzzle Velocity

    What is the most accurate method for obtaining muzzle velocity?