Re: Brass shavings on bolt face
It does it with both reloads and factory ammo (shavings). No pressure signs other than when testing for max loads, and didn't have the problem on extraction, only chambering a fresh round. Definitely not enough pressure to flow brass at the rim, esp since the only time the reloads were fired prior to chambering was the factory load.
It's a factory rifle, I wouldn't think headspace could cause the shavings, but could see how it could cause a hard-chambering issue. However, when the chambering issue occurs, it occurs a good 1/8 inch before getting to bolt rotation. Upon inspecting the round (nothing noted) and re-inserting the same round, something changes and allows it to re-seat with no problem whatsoever.
The only thing I can figure is the extractor is being prevented from going over the rim, since it's happening so far back, thus causing it to stop. Is that about the position that the extractor gets pushed around the rim of the case?
So far, all factory ammo is win super-x and all reloads are from those once-fired rounds. Shoulders were not bumped as there's no problem closing the bolt, no problems with tight brass before or after firing, even when starting to see other pressure signs testing max load.
WR- by bolt face being undersized, do you mean the inside diameter that fits around the rim while the cartridge base is against the bolt face?
Thanks for the help