My 2 RIAs & Taurus 1911, all .38 Super, work with any ammo I've given them so far. Right out of the "box". Not an intensive test yet. I had a Colt 1911 in .45 that wasn't finished as well as the Taurus, and the trigger was better on the Taurus than any of them. The Colt didn't seem to be any "better" or "nicer" than the RIAs, so I sold it. My $2000. Les Baer is not 4x the gun the Taurus is except for price; still, it's VERY nice.