The first brass I bought for my 260 was Nosler, I wasn't very happy with it, primer pockets gave way on some cases after first loading(well within book data) and none went past 5.
I'm using win 243 brass now with a stiff charge of H4350 and I've got cases with 10+ shots and they're primer pockets are still GTG.
I may try lapua if I can't find any more Win 243 or 7-08 cases before my current stock goes away.