As I said, no pressure signs, none, primers are still round on the edges. A tech at sierra once told me that when using fed215 primers, due to the soft cups of them, do not assume its high pressure if a flat fed. 215 is all you see. wait till you see one more sign such as ejector marks, heavy...
prrobably the expander ball causing it, run a case into the sizer, loosen the lock nuts to the decapping rod, back the ram off till the expander ball makes contact, pull down on the ram till it makes firm contact, then tighten the lock nut. see if that helps.
working with a 338 Edge, the data I have found is a max load for a 300 hornady A-tip is 90 gr. of H1000 for 2846 fps. am now at 2823 with 92 gr. H1000. running fed. 215's and they are not starting to flatten, no casehead expansion. do I go up a grain? going to anyways probably but want your...
if you have runout problems, try seating the bullet in steps, start the bullet, back the ram off spin the case 60 degrees, seat it a bit more spin the case, then finish seating.