How Hard is it to Crown Your Own Barrel?

[Strykervet]

The cutter goes in a lathe. I've done it by hand with the tool and a handle and it turned out okay, but I wasn't doing it on a very expensive rifle. It was a beater Enfield I sporterized, and I crowned the barrel using the proper tool a machinist buddy gave me, but I did it all by hand. It took a while, but I got it done. The end result was just as fine had it been done by machine, and it shot just fine, but I may have been lucky, and I wouldn't think of doing this to a nice barrel or a nice rifle, especially one that shoots sub MOA.