I have 10x reloads on about 50 pieces of rp brass for my 300wm and 8x reload on another 20 pieces of ww brass. I bought larry willis's collet die as soon as bought my other dies just because i agreed entirely with the concept.
I headspace off the shoulder .0002 then use larry's collet die whether i need it or not....don't even check anymore, some case's benefit, some don't...not a big deal.
every single one chambers and ejects with zero and i mean zero problems in approx 620 rounds.
I just wish i had a better way of checking the interior waist of the case other than a straightened paper clip.
So Far so good