I read an older Handloader article where there was a tool that was like a gauge where you could take a .22 long rifle (not a hollowpoint) and put it in and it would expose the top 1/16 " of an inch or so where you could file it flat, giving you a SWC type bullet and supposedly better expansion. Has anyone tried this at all? I was thinking of trying to come up with a homemade tool where I could use this with my K-22 revolver.