Test Gun: Colt 1911 Government, Officer's.
Barrel length: 5 and 3.5 inches.
Ammunition: Underwood .45 ACP 230gr +P Bonded JHP (Item 336).
Test media: 10% Vyse Ballistics Gel.
Distance: 10 feet.
Chronograph: Caldwell Ballistic Precision Chronograph G2.
Five shot velocity average: 974fps, 876fps
BB Calibration: 3.5 inches.
https://general-cartridge.com/2022/08/26/underwood-45-acp-230gr-p-bonded-jhp-in-vyse-ballistics-gel