My 340MP doesn't read that on the barrel. I did see in the article that Lucas posted it read all 340 etc. So now I've gotta dig out the manual.[/QUOte
Right. Got it. I know what not to do; and I didn't. I didn't find the potential problem until I cleaned it. I'm going to shoot .38 specials through it on Tuesday then see. If all is well, I'll function test it, load it appropriately, and have it for those times I need a small, lightweight revolver for my pocket. I may go ahead and replace the cylinder anyway. I see I can get a Ti one from Midway, if I decide to do that, or maybe just get a stainless steel one. and call it good.