Hadn’t heard of that caliber before. Looks like it’s .45 ACP turned up to 11.
Well 11.3mm is .45 I think it would be closer to 11.8 at least an 12mm at best.... I have 3 sets of dies for it an .498 is my cast lead fodder...
Some of the hot loads for it were cracking their 1911 frames early on yet my Glock 21 I put their slide assembly on has close to 3k of factory an my reloads through it an no signs of stress yet.... Recoil is mild an it is my carry rig now....