Not to pick nits, but don't count on a squib not cycling the action. I had that happen to me with a Ruger PC9 RIFLE. I didn't notice anything out of the ordinary on the squib but the second shot was really loud. No injuries, and true to form for a Ruger, there was no damage at all to the rifle after I pounded both bullets out of the bore with a dowel rod. As was mentioned previously, firing a hot rifle barrel dramatically accelerates wear. If you check the web pages of custom barrel manufacturers they will confirm this. Hot in a rifle barrel means firing a three or possibly five round group at a benchrest for maximum accurcy, in other words slowly; We are not talking about full auto or anything close to that. I would say the same thing applies to a pistol barrel, but I wouldn't let it keep you up at night unless you are doing it all the time. As was mentioned, the rifle cartridge has a lot more powder burning and a lot more velocity. The pistol barrel is not nearly as big of a concern. I seriously doubt that 99% of the shooting population will ever wear out a pistol barrel from shooting it.
[Edited by 444 on 05-19-2001 at 03:27 PM]