I use a single edge safty razor blade stuck in a dowel at about 15 degres to cut off the folded crimp when I'm roll crimping. Just stick the dowel in the shell and mark the end. Figger out how much to cut and make another mark that much lower. Hammer in the razor blade and you're set to go. If you find the razor can't be tapped in perpendicular, use a thin knife blade to make the cut, then tap in the razor. I can't post pictures, but I'm very proud of my roll crimps. I found trying to roll crimp the folded part of a shell just doesn't give a nice roll crimp. Just loaded up a 100 10ga black powder shells and a 100 smokeless. The BP were paper roll crimp and the plastic nitro were star crimp. When shooting BP in plastic the end of the shell melts too much for me. The paper stays nice. Paul
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