Test Gun: Colt 1911 Government, Defender. Barrel length: 5 and 3 inches. Ammunition: Underwood .45 ACP 200gr +P Bonded JHP. Test media: 10% Vyse Ballistics Gel, Clear Ballistics Gel. Distance: 10 feet. Chronograph: Caldwell Ballistic Precision Chronograph G2. Five shot velocity average: 1069fps BB Calibration: 4.0 inches. https://general-cartridge.com/2020/05/11/underwood-45-acp-200gr-p-bonded-jhp-in-vyse-ballistics-gel/
Agree. I like speed with solids and flat nosed rounds, but hollow points open to fastened penetration suffers from everything I've seen. But I'm not expert...so YMMV