Thanks for the pointer...read all 5 pages. I'm box limited, so I don't have to worry about pressure going up as Im nowhere close to the lands. As for expansion, everything we have shot has looked the same...nice big exit, my guess is he got a bad batch...which I have had in other bullets before.
What does concern me is there might be velocity changes due to being seated ever so slightly deeper in the case if the bullet is long...though it sounds like it is small enough variance that it won't matter in that sense.
That said, while I check my powder lots, I did not realize bullets were also so effected...though now that I think of it, I did have to adjust my seater ever so slightly to get the last box of bullets to still fit in my mag box....so looks like I'll need to pay atttention to bullet lots too and buy a bunch from the same lot at the same time.