Projectiles fired were Hornady 85 grain XTP JHPs, trimmed down to 71 grains and 76 grains. This was done in the interest of finding an FBI-compliant load for the .32ACP 'mousegun'. Cartridge : 71- and 76 grain modified Hornady 85gr XTP JHPs. Firearm : Kel-Tec P32 with 2.75" barrel length. Calibration : 10.1 ± 0.05cm and 588 ± 0.500 ft/sec impact velocity. 71 grains Shot 1 - 1.9 grains of N310 powder, WSPP. Bullet penetrated 12.6 ± 0.031", average expanded diameter was 0.356 ± 0.0005". Shot impacted at 851 ± 0.500 ft/sec. Shot 2 - 2.0 grains of N310 powder, WSPP. Bullet penetrated 13.3 ± 0.031", average expanded diameter was 0.379 ± 0.0005". Shot impacted at 872 ± 0.500 ft/sec. Shot 3 - Somehow walked out of the ammunition box amidst all of the excitement. It is probably doing its 'landmine' impression right now on the ground of the facility where the testing took place. Shot 4 - 2.2 grains of N310 powder, WSPP. Bullet penetrated 13.3 ± 0.031", average expanded diameter was 0.398 ± 0.0005". Shot impacted at 930 ± 0.500 ft/sec. Shot 5 - 2.3 grains of N310 powder, not fired at the block, but chronographed. (Primer was starting to flatten out). Velocity = 970 ± 0.500 ft/sec. 76 grain bullets Shot 1 - chronographed only, velocity = 828 ± 0.500 ft/sec. Shot 2 - 1.9 grains of N310 powder, WSPP. Bullet penetrated 13.1 ± 0.031", average expanded diameter was 0.363 ± 0.0005". Shot impacted at 848 ± 0.500 ft/sec. Shot 3 - 2.0 grains of N310 powder, WSPP. Bullet penetrated 14.4 ± 0.031", average expanded diameter was 0.360 ± 0.0005". Shot impacted at 922 ± 0.500 ft/sec. I cut the bullets down using a 5/16" collet to hold the bullet in the lathe and a standard carbide cutter tool. The feed rate was 0.2mm/rev. I found that coming in about 0.068" off of the base of the bullet will take away enough material to transform a 85 grain XTP into a 71 grain XTP.