Not entirely true azredhawk. Many people have shot these guns with .38 special conversions many times, with no detrimental effects. Yes, they have to use hollow-based wadcutters pushed all the way into the case, but it works just fine at regular .38 special pressure (which is actually pretty close to normal black powder pressures). Would they work with .357 magnums? Absolutely not. No one makes a conversion for that cartridge, so you don't even have to worry about that happening. Agin, .38 special, and .38 long colt, conversions work just fine, as long as pressure are kept to SAAMI spec.