More and more states are allowing 350 Legend, 450 BM and similar cartridges for hunting in otherwise shotgun only zones. This for me thinking about the need for a cartridge between the 350L and 450BM. Starline offers unformed Grendel brass. It has an 11.2mm diameter and 40mm length. This could be tapered from 11.2mm at the base to 11mm at the neck, have a 0.5mm wall thickness, and use a 10mm (.400") bullet. This seems to me like a perfect balance with more energy than the 350L and less recoil than the 450BM. Any thoughts?