TexasCHLforum.com

MY father in law has the same gun. There are some things you'll want to keep an eye on with it.

(excuse me as i'm not a gunsmith and I can't think of the official terms here)
First, the retaining screw thingy that the cylendar nub locks on, on the frame can get loose. If it's loose one way, the cylendar will get stuck in the frame. If it's loose in another direction, the cylendar will not be close enough to the forcing cone, and you'll feel a "slap" on your finger when you shoot it.

If this happens, a dab of loctite on the screw once you get it positioned should clear it right up.