Waynzee
Well-Known Member
- Joined
- Jan 21, 2016
- Messages
- 732
Sounds like you have a couple of problems. Are you using the same case's? Are you full length sizing your case's? If you have a tight chamber and your only neck sizing that could cause the hard bolt close and are the loads hot causing the bottom of the case to bulge this too could cause the bolt to close hard. As for the marks sounds like a burr on the feed ramp.