Very interesting reading . I'm not in the same league as you all but my thinking is the same . I'm shooting 308 , my groups are 1/2 inch at 200 yards not 600 , that's amazing . I use to use the same brass until I saw a problem then dump them all , average 23 reloads . This season I'm trying 3 different lots 30 each , nothing fancy , HSM ,FC and ADI . I don't neck turn or add heat to the brass . I'm wet tumbling now brass comes out like new every time , add Imperial dry graphite lube to the bullet when seating . So far the case strength or the lubed seating is making a difference for the better . I was going down that road like you all but I don't think I'm capable of shooting those micro groups . I stopped over thinking kept it simple for my ability but love reading about what the real tight groupers do . Great Reading , thank you all.
Chris