My carry is a Colt New Agent in 45ACP , after shooting it for awhile testing for 100% reliability until I would consider it my carry, I found it so enjoyable to shoot I was concerned in wearing it out . Changed the recoil system to a EGW flat wire single spring system , ordered 3 springs to have on hand , then I started to find the lightest charge that worked 100% , Win231 4.7 great. under a 230gr FMJ set a 1.255. Anyone out there do the same ?