How about a little hypothetical inquiry to the mix?

If the bolt face / head was not square & true to the centerline & chamber and all that, what effect would it have on brass over the longer term?

Whenever I dress a case & have it chucked up in the drill, hit the trigger & it spins on sort of an elipse - the head is rotating & the case mouth is spinning on a 3/4 inch circle - I wonder if the chamber had anything to do with it.
Especially when I get into 5 or 6 firings where I'm finding many cases the same. 1 or 2 firings - OK. the more use, the worse they are.

Would this be related to anything regarding the bolt head / face to chamber relationship?

Whatcha think ??? ??? ???

Frank in Fla