I have a Kimber Pro Carry II Stainess 4 inch barrel with a conversion kit for when I want to shoot economical ammo. Generally no problems with cheaper ammo, but the higher quality ammo ensures no problems whatsoever. When I'm just plinking I'll shoot the cheap stuff and deal with a jam every once in a while, not a big deal to me. PLUS, you can change it out in a matter of seconds, so it's not real complicated to get it done. No complaints here.