So I bought a bag of Winchester never fired brass from Bass Pro. I re sized them, and tumbled them. I looked them over after pulling them out of the tumbler and noticed that about 4 pieces had the flash hole in the primer pocket that was out of round. It was like it was a hole cut normally, but then it looked like it had been filed or something so that it was opened up more than normal and made out of round. The edge of the flash hole seemed slanted also like something had almost filed it or something. Is this safe to shoot or should I throw these pieces away?