The biggest problem with steel based cases is they are not forgiving like brass. Much of the same as nickle coated cases. In a dirty environment something has to give if dirt enters the chamber, will it be the case or the barrel?
32” of drop at 500 yards is pretty impressive. A 75gr boattail at 3500 fps sure would flatten out a PRS competition range, and lighten the rifles a good bit. I’m thinking a progressive twist barrel would extend barrel life for civilian rifles.