05-16-2021, 06:46 PM
So I went ahead and resized 50 pieces of 6.5 Grendel brass to 6mm ARC yesterday and noticed today some marks along the top of the neck and one around the center of the brass this morning. I think the 2 lines at the top of the neck are what are referred to as "vampire marks" from the feed ramps?
I'm not sure what may be causing the ring around the center of the brass.
I tried rubbing the ring around the center of the brass but it doesn't seem to have had any affect.
The last thing I did yesterday was to chamber them and closed the bolt to make sure they would fit. I think this is where the marks occurred but cannot say for sure. Any ideas? Should I be concerned with either of these marks?
I'm not sure what may be causing the ring around the center of the brass.
I tried rubbing the ring around the center of the brass but it doesn't seem to have had any affect.
The last thing I did yesterday was to chamber them and closed the bolt to make sure they would fit. I think this is where the marks occurred but cannot say for sure. Any ideas? Should I be concerned with either of these marks?