.44 mag Winchester 240 gr JSP, part #Q4240 fired from 6.4" barrel Herter's Single .44 made in "Western Germany" into calibrated gelatin. Denim was intentionally omitted because this is a JSP designed for hunting or large animal defense and bears don't wear jean jackets.

BB: 597.8 fps, 3.2"

Impact velocity: 1,428 fps
Penetration: 29.8"
Retained weight: 229.3 gr
Max expansion: 0.480"
Min expansion: 0.473"

Two additional velocity figures:
1,454 fps
1,443 fps

I actually fired a total of five shots but the sun was getting low and my chronograph produced errors on the last two shots.


























.38/.357 CCI shot shell fired from 16" Rossi M92 into calibrated gelatin. Denim omitted because snakes don't dress like Jay Leno.

BB: 597.8 fps, 3.2"

Impact velocity: 1,019 fps
Maximum penetration: 4.0"
Minimum penetration: 2.1"

The shot cup was recovered at 2.2" and you can see it in the first cross section photo. The total recovered weight, including shot cup and fragments of the capsule was 90.6 gr. Just as it does from a revolver, the shot pattern opened up VERY quickly. This shot was fired from less than 10 feet and the pattern covered the entire block.