Brass Fetcher Ballistic Testing
Test # JK 19
Overpenetration. (Nominal 10% concentration)
Cartridge : .38 Special RBCD 60gr TF/SP
Block Calibration :
Primary block : 3.3 ± 0.05 inch penetration @ 587 ± 0.5 ft/sec
Secondary block : 3.2 ± 0.05 inch penetration @ 579 ± 0.5 ft/sec
Block Calibration temperature :
Primary block : 36.9 ± 0.05 Degrees Fahrenheit
Secondary block : 37.4 ± 0.05 Degrees Fahrenheit
Block Core temperature :
Primary block : 37.6 ± 0.05 Degrees Fahrenheit
Secondary block : 37.7 ± 0.05 Degrees Fahrenheit
Bullet Performance:
Impact Velocity : 1713 ± 0.5 feet/second
Deepest Penetration Depth : 8.1 ± 0.05 Inch (Secondary block : 0.8 ± 0.05 Inch)
Maximum Crack Diameter : 2.2 ± 0.05 Inch
Max Crack Diameter Location : 3.8 ± 0.05 Inch
Cavitation Depth : 0.0-8.1 ± 0.05 Inch
Notes:
Weapon – Smith and Wesson 642, with 1.9” barrel length
Distance – 10.0 feet, muzzle to gelatin impact face
Test site conditions - 70 deg F, 37% relative humidity
Time out of refrigeration prior to shot impact - 5 minutes
Bullet recovered weight – 58.9gr
Bullet recovered average diameter – Jacket = 0.514”; lead core = 0.356”; plastic core = 0.323”
Bullet recovered length – Jacket = 0.148”; lead core = 0.209”; plastic core = 0.277”
