Tamid:
My option B above is predicated on keeping some of the existing crimp memory in place to retain the overshot card once the final fold crimp is applied. Its less elegant than a nice roll crimp, but effective for those of us using progressive presses.
I agree with you. If roll crimping, then you don't want any of the existing fold crimp to remain.
Drew:
Thanks for the image of 20 ga. hulls. Makes sense that many would be shorter than 2 3/4" in length.
Agree with your point about relaxing the steep angle of the forcing cones, provided their is enough thickness in the barrels to support the removal. I own a german guild built 16 ga. that had 2" chambers and super steep forcing cones. A 2 1/2" RST would not fit in that chamber. I had the chambers and cones lengthened to solve the problem. Gun shoots great now.
