I have been reloading Seller & Bellot 7x57 cases and have noticed that reloaded cases cause the bolt to close hard. After I remove a loaded case from the chamber I see that the primer has obvious scrape or rub marks on them from the bolt head. Loading a case without a primer is a non-issue. The problem is not with the primers being too large as I have used them in numerous other cases without issue. My question is—am I in danger of having a round go off as I close the bolt on on a loaded case with these shallow primer pockets?
