So I'm pretty new to reloading. I know you're supposed to check the cases for a line going around the case head to avoid separation... My question is how obvious is this line? I of course check all my cases but even on brand new manufactured ammo occasionally see a faint line going around the case. Since its on ammo that's never been reloaded (Hornady, Federal) I'm starting to question my own judgement on the cases I do reload. How obvious should the line be before I discard the case?

Thanks.
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