I’ve got a rifle I just picked up with a crown that looks like it was cut with a chainsaw. What’s the best way to clean it up? Is there a hand cutter...seems I’ve seen them before but couldn’t swear to it.
Have heard of chucking a round head brass screw in a drill and using grinding compound, but the bubba factor seems a bit high. May be an improvement over what you have now however.
The round-headed brass screw and valve grinding compound actually works pretty good. Have done it a few times, and always ended up with more than satisfactory accuracy.
Just be sure you have the muzzle well-stuffed with something to protect the rifling. I always used a plug of paper towel, and pushed it out from the breech with an oiled patch.
I've hacksawed a damaged muzzle off a rifle and filed the end smooth and square, with no crowning. Shoots good.
I've also tidied up a crown using some valve grinding paste and a ball bearing from an old style mouse - an alternative to the screw head method. Also works good.
A carbide ball burr will do a better job than a brass screw head with lapping compound. After using a brace or a power drill with low RPMs with oil, place a piece of wet and dry 400 grit sandpaper on burr to smooth out the cut.