Thread: Why…? Rings marks/scoring brass after FL resizing?

Originally Posted by Sideshow

Might be copper from the bullet that gets peeled as you seat the bullet then sits lose in the chamber and as you chamber the next round this is where you get that scoring.
But that is usually not straight, because as you left the bolt to extract or chamber this is when it scores the brass.
Q: Are you sure it was on there after reloading and not before, ie as a new case?
That nick on the rim sort of leads me to think that.
The worst I have seen is from redding dry neck lube, a ceramic ball getting in the die when neck sizing. God knows how it got there but made a right mess of the brass.

Hey, just put some new and once fired brass through die which had no blemishes or ring in it ect before hand but once re sized can see them straight away.. i can see machining rings on inside of die and for whatever reason i seam to need to use a fair bit if pressure with my press..can be easy to jam cases in it!


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