the less you work your brass, the longer it will last, I shoot a high intensity cartridge called the 7MM Allen Mag, basically a 7mm/338 Lapua AI, it will run a 160 accubond at 3575 fps with a top level load, I have 3.00 in each case when I load it the first time so I take care of them. I load them with 110 gr of a very slow burning powder that is designed for the 50 BMG and the 20MM Vulcan cannon called WC872, I anneal my cases every other
loading and I get 5-6 loadings from each case before I notice the pocket getting loose. the guy who designed the cartridge and built the rifle recommends loading them to 3700 fps and trash them after the pocket gets loose after the third loading, I've killed deer with this combo at 3575 fps way beyond 1000 yards so I want all the life I can get from them.
RR