I'm sure some brass is better than others and I'm not familiar with ADG but in the past my problems with brass even Norma brass has been because I pushed past the recommended max load. But I bought the 28 Nos because I feel I can keep the load moderate, pressure wise and get the velocities I want thus saving the brass, hopefully anyway. I don't have a 338 L rifle but I loaded rounds for a friends gun and thought the brass was high but it's even worse with the 28 N. Right now finding even once fired 28 nos is difficult if not impossible. But then again I will keep my shots under 800 yards and planning on using the 143 gn hammer hunter bullets. Per a post i read I "May" be able to run them around 3600 FPS with Retumbo (see huntemhigh's post:
http://hammerbullets.boards.net/thread/176/28-nosler ) but we'll see on that as I can't verify those same numbers yet on my own rifle as I'm waiting for componets etc.