Was wondering if anyone has run into the same issue I'm having. I've got a #1 in 45-70. Have had the rifle for years, and have never shot anything but cast in it. The only issue I have is the barrel is oversize, have never been able to get the accuracy I think it should have. The bore slugs out at .451 bore and .460-.4605 in the grooves. Chamber is tight as well, and no lead to speak of, can barely get a .460 bullet to chamber.
Is there anyone else that's run into this? Was thinking maybe re-barreling, case neck turning possibly. Never going to sell it, so don't care about collector value. Have let too many #1's get away from me....
Any thoughts would be appreciated.