the 6.5x47L case has the small primer. I don't shoot in sub-zero temps and I suspect that more than 99% of us don't shoot in sub-zero temps where the difference in accuracy between the two will matter.
I have found two loads with my 6x47L where the ES is less than 5 for as many shots as I have taken. I use Russian primers. I have no idea how "hot" they are. I suspect that IF I ever decide to hunt Musk ox or polar bear with my 6x47L I will use CC 450s.
The small primer pockets do indeed hold up much better than the large ones do to pressure. When brass costs $1 a pop or more, you want it to last. My powder charges in the 6x47L are generally 38-40 grains- over the Tubb threshold. I don't have any way of comparing since nobody makes this brass but Lapua.
All the Creed stuff I have tried has shot wonderful and has been LR Hornady brass.
