Follow the directions for inspecting brass. The only problem I have had from bad brass happened a couple of weeks ago using new ammo. I had incipient case head seperation with new store bought ammo. The last round in the box. I inspected all of the other brass, and it was fine. Had the rifle checked over by a smith whom gave the rifle a clean bill of health. He thinks it was the rare happening of that one that got by QC.
To avoid bashing I will not name the maker.
No matter how many times you do it and nothing happens it only takes something going wrong one time to kill you.