I actually shot some +p stuff through mine with no ill effects, about thirty rounds. I am not using it as a defensive gun so for range shooting I just put regular .38 special stuff through it. These colts will take a decent deal of abuse, the cylinder "spindle rod thingy" is pretty substantial.
Surprisingly accurate for a gun sportin' terrible sights, actually my front sight (brass thingy) flew off a couple of range sessions ago and I lost it. The last couple of times I shot I just aimed down the barrel and it seemed to work fine. I like it.