Your 20s look great. The plastic discs will put a hole in you pattern. The paper overshot card from BP seem to ''delaminate', if I'm describing it right. They pattern quite well. a sixteenth deeper roll crimp won't hurt, and you may still be able to trim off some of that deformation, but I do trim my NPE hulls slightly more than star crimped (BP hasn't had true 2 1/2" hulls for some time)
It's been many years since I've had any of my loads tested, but 'way back when' I did, and found using my same recipes that I used for star crimped hulls resulted in a slight pressure drop on roll crimped loads.
Roll crimping is, when you come right down to it, somewhat of a novelty. I wold use them mostly when hunting being somewhat kinder to the ass end of close bird. I don't get out much anymore, and don't use them much, if at all, shooting clays.
Ross tools seem to digest deformed hulls ok, not so much with the tools sold by BP.
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