RE: don't do this
sure i noticed the collet is completely missing. And i understand what some are saying about the collet sealing off the barrel causing a sudden and dramatic increase in pressure. I also notice that there doesn't appear to be any powder residue on the sitter or the spintered barrel. I'm thinking that the sitter would have just blown out the end of the barrel. But yes i do see how it could be possible.
I'm not saying it didn't happen, or that it's not possible. I'm not going to try it myself, i like my guns to much. Even if the barrel didn't split like that you would ruin the rifling at the tip.
like the title says.......don't do this!
Alls i'msaying is that i'd have to see it to believe it