Mike
Two possible problems - one gun related and the other ammunition related. The most likely cause is those wonderful steel case heads we have to contend with these days. Sounds like your reloads are swelling up enough to give occasional hangups. I think a collet resizer either on a MEC reloader or a Super Sizer would solve your problem.
The other possibility is a rough or dirty chamber.
The small hook attached to the barrel extension is indeed the ejector. Some marking of the case head where the ejector contacts the rim on my long recoil guns seems to be normal and depends on the brand of shell used (thickness of case head material). Is the bulge simply cosmetic or bad enough to affect the hull when reloaded?
If you can't get the problem solved bring it down to the Flatwater and I'll take a look at it for you.
Bill Layman
