I have read that you should make sure all your rounds will feed and eject properly (semi auto pistol in this case). So i loaded a magazine with 10 rounds and commenced to chambering and ejecting using the slide. They were all successful but I noticed scratches on all the cases, running the length of the case and in one instance even the bullet was scratched. I repeated the test using 5 commercial rounds and found they too had minor scratches, but not as pronounces as my rounds. Is this a problem with my pistol (SW40F) or my rounds?