I should have mentioned that the rifle eats brass quite badly with factory ammo as well. Though it preferes to take bigger bites out of some brands than others.
As for my loads, I don't remember the details off by heart, but I have 3 manuals and all indicate that I am well within the mid range for this bullet/powder combination. Primers look good, factory loads are actually flatter in some cases, and there are no other pressure signs.
And yes, I think I misworded my original post slightly. The bolt head is filling with brass from around the cartridge rim. But the brass eating farther out on the cartridge (just ahead of the belt) would appear to be more in line the end of the chamber, not the bolt.
Last edited by 300magman; September 18, 2011 at 10:48 AM.