I have some of the very stout, tough high-grade A-Square 7mm STW brass that I used in my 30 STW. Lapua quality brass.
I don't have that caliber anymore and I am willing to sell the brass. It comes in 20-round plastic boxes. I have 130 pieces of it that is still new. I did my entire project and used it for hunting for several years with 30 pieces of brass.