Just picked up a break action 45-70 gov and I want to have the barrel threaded so I can run my SiCo Hybrid on it. What is the common thread pitch for this caliber? I already have a 45 acp piston for my can so it would be convenient to just have it threaded for that but I don’t want it to be an odd ball. Speaking of which, would it be safe to run a piston/booster on this caliber with a fixed …

