I also recognized some amplified muzzle rise and recoil when using defensive rounds for example Sig V-Crown loads, however it wasn’t unmanageable. At it’s release HP was still under the gun from law suit and political pressures of some time and preferred their revised carbine to fly under the radar. https://9mm-carbine95949.blogdon.net/5-essential-elements-for-9mm-handgun-55707870