I did a 338 brass test a month or so ago, in a short Edge.
I tested Federal, Norma, Nosler, old & new Remington & Bertram.
The Federal was the softest & had the smallest head before firing so had loose pockets pretty quick.
The Norma & Nosler are the same very nice brass & produced the best velocity for powder weight used but showed pressure before the Remington.
The Bertram brass showed pressure earlier than the Remington but as the head is the biggest & didn't have far to expand so the pockets were still very tight, it has a thinner neck which is a consideration with bushing dies, easy to fix with a smaller bush.
The Remington was still the best all round brass for the Edge in my opinion, all things considered.
It won't last as long as the Bertram, but is cheaper & easier & will still provide an acceptable life if you don't give it a hiding
I have used quite a bit of Bertram brass in various calibres & really like it