WAY faster than the 40 gr .22 mag rimfire's 1900 fps, which is from a 20" rifle barrel. I see no reason to bother with a 223 pistol, nor with a 7" barrel, but that extra 800 fps means 650 ft lbs, not 300 ft lbs. In other words, it hits like a .22 HORNET, not a 22 mag rimfire. BIG difference, dumbass. The 2300 fp you THINK is "like a .22 wmr is with a 62 gr bullet, not a 32 gr bullet. BIG difference. Quit LYING to people.