Shot about a dozen rounds of low-pressure nitro (Cowboy Action) commercial loads through it. No apparent damage at first: but THEN, the revolver developed a dangerous tendency for the hammer to slip forward from full cock, without any pull on the trigger!
I honestly DON'T think this had anything to do with the smokeless loads. I bought the pistol second-hand from someone who competed with it, and I think some part is worn and needs replacement.
But in any case: it's going to the gunsmith before it goes to the range again!
Jim