OK - this is positively my last comment on roll crimping. After this, everything I have worked out in my 80 years has been published, and hopefully, the world is a better place.
When you start roll crimping the plastic hulls, it pays to have the roll crimper in your hand drill or the old fashioned clamp-on style a little warm. I keep a propane torch handy, flaming of course, and I apply a little flame to warm up the crimping tool. When you hit the plastic hull it warms quickly and will fold over more better.
'nuff said. JF
