well it is possible the 45-70 could cause frame stretche but I would expect some misfires in there too. The fact that it's two older batches of ammo throws a curve ball in there for sure. If your local GS is familiar with T/C's and how to properly check headspace I would definitley have him check it. If you stretched the frame even just a few thousandths it could still function but be enough to cause problems with the casings. Is this a G2 or original Contender frame and are you shooting Trapdoor level govt loads or levergun level stuff?
I won't be wronged. I won't be insulted. I won't be laid a-hand on. I don't do these things to other people, and I require the same from them. John Wayne-The Shootist
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