07-22-2018, 01:53 AM
The ID of a Grendel case is somewhere right around .40 so unfortunately, I don't think 10mm would work. Would make for a great "10mm Maximum" semi auto handgun, though.Threefiddyseven Grrrrrr would probably end up looking like something in between 300 BLK and 458 Socom. Which is a gap that should be filled!
Let's go Brandon!