9mm Revolver: Crimp Jump Testing (Bullet Creep)
This video provides a comprehensive test of various 9mm ammunition types in a semi-automatic caliber revolver, specifically addressing the issue of crimp jump or bullet creep. The instructor, TheYankeeMarshal, details his testing methodology and categorizes ammunition based on its performance, distinguishing between rounds suitable for range use, self-defense, and those that fail entirely due to bullet setback. The findings highlight the critical importance of testing ammunition in revolvers chambered for semi-automatic rounds to ensure reliability.







