I've often wondered that myself..but have known of 2 chain fires. One was in a Ruger and the other in a replica..The replica actually flew apart..the Ruger was ok. One set off 3 other chambers and the other 2. Seems they were using slightly undersize balls though...Guess they needed bigger...er...ahh..balls!.

.I am sure in the distant past that same thing happened.easier to load undersize than ..well you get the point..BUT seriously..I do agree with you. Whoever said Robin was not the brightest bulb on the tree was obviously wrong. I no longer shoot my original Colts..but did shoot the ol Navy Arms replica a couple of weeks ago. Just had to remind myself how much I hate cleaning those BP guns...and then a few weeks later..having to do it agian..just in case....Reminds me..I gotta check the ol gun today..just in case...huh..a play on words..it is in a case.