I have formed 33 out of 26 and 30nos brass, also formed a couple from bertram 338edge brass. After forming and reaming/turning they all worked out ok. The bertram has a tiny bit less case capacity, I didn't really see any advantage over the nosler brass. Pressure signs at very similar velocities, so there was noting to gain. I have 7 loads on most of the brass, primer pockets seem fine on all of it.