This is 45 ACP standard pressure ammo but you can use it for Cowboy Action Shooting. Loaded with a 230 grain lead round nose bullet. These will function in all 1911 with a standard 16lb recoil spring. These rounds are loaded to hit point of aim with military issue pistols and issued sights. 830 fps 5" barrel.
NOTE: Be sure you have a physical shipping address on your order as UPS or FedEx will not deliver to a P.O. Box. No returns on ammo.