The Hornady 9,3x57 set I got sizes the bejeesus out of the neck - down to an ID in the .340s. The elliptical expander does open it back up nicely, and it does make for easy 8x57 to 9,3x57 case conversion, but there's really no excuse for that much over-working of the neck. The sizer actually serves better as a 9x57 die, though still a bit tight for the neck even on that cartridge.