I'm showing a newbie how to reload. He saved the brass he shot from .357 Federal American Eagle factory ammo and brought it to me to start learning to reload.
Using my RCBS dies, I showed him how to de-prime/resize the brass etc. but when I was examining the case heads, after they were processed, I notice a lot, not all, had a definite ring about 1/4" up from the bottom of the case head.
It almost looks like a cut or the start of a case head separation on this once fired case.
I ran some of my Winchester and Starline brass through the die to make sure I didn't have a problem with my die and had no similar problems.
Looking for thought and wisdom here.
Using my RCBS dies, I showed him how to de-prime/resize the brass etc. but when I was examining the case heads, after they were processed, I notice a lot, not all, had a definite ring about 1/4" up from the bottom of the case head.
It almost looks like a cut or the start of a case head separation on this once fired case.
I ran some of my Winchester and Starline brass through the die to make sure I didn't have a problem with my die and had no similar problems.
Looking for thought and wisdom here.