Any idea how many loads it is lasting. I'm on my 3rd with Hornady brass and primer pockets are definitely starting to loosen up. I might get a 4th or I might not.
Can't help you with 7 Mag brass, but I've been running 6.5/6 CM ADG brass in a couple match guns and am very pleased with it. Very consistent and similar internal capacities as Lapua and Alpha brass. The overall weight of the ADG brass is 8-9grs (IIRC) heavier than those two offerings, but that additional weight is a heavier constructed head.
I'd say fire away. Doubt you'll be disappointed.
I am using their 308 Brass and the only issue is you have to be careful to reduce loads due to the heaver brass, at least with the 308 brass. I am only up to 3 firings, working on their 4th but they still seem like brand new. ADG is local to me here in central KY.
I did a comparison with Winchester brass which is the only other brass I use for the 308. (sample size was 6)
ADG average weight: 172.7 with a SD of 0.3 and ES 0.9
Win average weight 159.3 with a SD 0.8 and ES 2.2