I too always FL resize new brass. For the aforementioned reasons of caved in mouths, etc. The last 2 batches of 35 Whelen RP brass i've gotten have been pretty terrible.. no way you could even begin to seat a bullet in many of them.

on new brass, after i FL resize i also trim, chamfer the mouth, true the flashhole, chamfer it and true the primer pocket... this is the only time i do all of this. From this point on i neck size only and i'll check to see if the mouth is still square after fireforming. other than that it's just check from time to time to see if they've stretched too far and need trimming again.

Reason i do the primer pocket is from the fact that what i thought was excessive pressure turned out to be a primer pocket situation where they were not formed deep enough... the primer was actually flush to slightly protruding above the rim face.

i've also noticed with the 35 WHelen brass a significant amount of runout and perpendicularity... meaning the neck is not true to the C/L of the case and the rim face is not square to the C/L of the case... some are so bad that you can't even get the case trimmer pilot in the mouth...

Fireformed with a good load and they are about as true as you can get them eventhough they "suck" out of the bag...

On another note the 280 rem nickel brass i shoot is pretty danged peachy right out of the bag...

JMHO

Jamie