Underwood .45 ACP 200gr +P Bonded JHP in Vyse Ballistics Gel.

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/

 

Looks like they’re probably going too fast? Thanks fir the test.

 

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