MonkeySpanker has made them from 270 Brass I think. Easy to make from any 280 Rem Brass. I pay the extra for the Nosler brass as the cost of powder, bullets, brass life and time in fire forming 270 brass outweighs the outrageous price. And mine are lasting 8 or so reloads, so £115 for a box of 50 is only about 30 pence each.