roll crimp or 6 fold

[Paul Harm]

I've always heard less pressure for the roll crimp, but Mark O told me if you make the roll over real deep it can raise pressures above the fold crimp. That would make sense to me. Mine are usually, I'm guessing because I'm too lazy to go down the basement and measure, about .030 to .040 deep. I'm just comparing in my mind that they didn't look as deep as a .060 fold crimp, which is what a factory crimp should be.