Heh, my sympathies to you! My "special" .308 has a .310 groove x 10" twist barrel. Loading with .311 diameter jackets work. Haven't tried any light weight AK slugs in it yet but would bet they shoot fairly well. It's the rifle that Brett Havlin recently brought back from the dead for me (THANKS BRETT!).
Looking forwards to seeing how long heavy paper patched work out.
That sounds interesting, NKBJ. Is there a thread on it? I'd like to read what you have and what was done to resurrect it.
Some old bores can be cleaned up with JB Bore paste and made to shoot lead bullets surprisingly well. I can just see going out with a 30/40 Krag, shooting 210gr cast lead bullets for deer. What would the CO make of that?!