Bennybone Wrote:The barrel is an ARP 264 lbc with a .297 neck , a guy with a caliper took a measurement for me of the fired case (neck) and it was .300 .
That doesn't seem to jive if we're talking fired brass. The brass will expand to chamber size, then retract 1 or 2 thousandths. Not sure how a fired brass case neck can measure larger than the chamber's neck diameter. A .297 chamber neck should result in a fired brass case neck of ~.295 or so.
The OP mentions a fired brass neck size of ~.293, so he probably has a chamber neck diameter of .295, which is typical for 264 LBC chambers.
grin&dull' Wrote:finally got a good photo of the two cases side by side. Got it Hornady on left Wolf on the right.
In addition to the bulge you mention, it appears that there might be a difference in the cartridge rims (shape and thickness), which might contribute to unreliable extraction and ejection. Perhaps the extractor isn't getting a good grip on the Wolf rim, but works fine with Hornady brass.
Drifter