Paul, my paper Chedite hulls never look as nice the 2nd time around, but they don't get worse on the third, though I rarely use them 3 times.
I use both new, and once fired hulls for roll crimping, and once fire plastic gets trimmed to 2 1/2" first. I know precisely what you mean about the fired hull, being deformed by the heat, but made a friction taper, pretty much the same as BPI's and it puts them back into shape quickly.
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