Just a couple years ago Hornady and Knights Armament were working on a new Cartridge. I'm not sure whether this was meant to be used in a Carbine or a Pistol? It appears from the pictures this Wildcat was capable of fitting in a 2" long Magazine. Brass was comparable in length to the 300 Blackout. Has anyone had experience with this Cartridge or it's usage? Claimed equal to 5.56 to 300 Yards.