@SkullKeeper
I bought some 25/303 brass made by Bertram. Worst brass I have ever used. The rims where to small for the extractor so I had to knock the cases out with a cleaning rod. Every case I tried to fireform split from shoulder to Web. I gave up after 3 shots.
Rang Bruce Bertram and he told me to measure the cases and they were all over the place. His reply was they are all within spec.
Never had a problem with Hornady or Remington brass.
Have never bought Bertram brass again and gave what I had to another shooter for free. He got 2 reloads out of them and said they were rubbish.
Just my opinion which ain't worth much.
Bob