243 brass question

Is this from a crimp or a sign of over pressure?



I pick up a lot of brass when the deer comando's leave the range and keep what looks like once-fired factory stuff. I don't crimp my rifle rounds and never really noticed it before.

Thanks,
ElKabong

DING! DING! Winchester is correct. That's the only brand I noticed it on also.

What's he win Chuck?