Oh, this was worse than that ... with a fired case & spent primer, or a neck sized case & spent primer, or a FL sized case & spent primer, it would cycle perfectly. Pull the trigger on the spent primer on any of those 3 cases however, and you'd need a rod down the barrel to remove the case - just a light tap, but enough of a jam to defeat the extractor. Sadly, all my books except two showed the "wrong" case size. Only the two oldest from the 60's & 70's had what I believe to be the correct dimension for this gun, but I had stopped using them since I had "newer and better" books now.
Live & Learn.
I have had a couple occasions as you described though back when I was still learning and didn't realize the importance of case length (my mentor was more critical of OAL and didn't stress Case Length to me) ... cycled fine until the live round was fired, then it would hang up in some way ... those I figured out quick enough once I broke out the calipers. Luckily didn't have as catastophic results you did though, just some sticky cases, a sticky bolt and a couple badly cratered primers.
Live & Learn.
I have had a couple occasions as you described though back when I was still learning and didn't realize the importance of case length (my mentor was more critical of OAL and didn't stress Case Length to me) ... cycled fine until the live round was fired, then it would hang up in some way ... those I figured out quick enough once I broke out the calipers. Luckily didn't have as catastophic results you did though, just some sticky cases, a sticky bolt and a couple badly cratered primers.


















































