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9mm wsp primers pressure

  1. Reloading
    I know I'm beating a dead horse here. I started reloading a Glock 22 gen 4 with a conversion barrel to 9mm. I did a pressure work up, starting at 4.5 grains to 6.0 grains of Power pistol. 124gr FMJs, 1.150 COAL and 5.3gr is showing pressure signs (Cratering) on Winchester small pistol. The...