Test Gun: S&W M442
Barrel length: 1 7/8 inches.
Ammunition: Underwood .38spl 158gr +P Hard Cast Keith (item 743)
Test media: 10% Clear Ballistics Gel
Distance: 10 feet.
Chronograph: Caldwell Ballistic Precision Chronograph G2.
Velocity average: 1035fps
https://general-cartridge.com/2022/07/23/underwood-38-spl-158gr-p-hard-cast-in-clear-ballistics-gel/