Thanks to all
Thanks guys for all that help.
I figure it is probably due to me getting my resizing wrong, but can't be completely certain.
LeftoverDJ, I am following your lead and taking it to a gunsmith.
I have player quite a bit with these cases (including seating depth), and that is
why I have done more full length resizing on them than I will in the future.
They are actually remington cases. I may purchase another brand next time, but only if the
gunsmith thinks it could be there fault, not mine or the rifle's.
Perhaps Lapua might be the go?