Essentially, what you get with the .450 SMC are 10 mm velocities with a .45-caliber. Of course, since no one is manufacturing .450 SMC semiautos, what you're probably wondering is what you have to do to shoot .450 SMC in your .45 ACP. Well, a .450 SMC cartridge can be fired in any .45 ACP handgun. However—and this is a big however—it should only be fired in full-size .45 ACP handguns that have a +P rating. (A 20- to 22-pound recoil spring in your favorite 5-inch 1911, or a 21- to 23-pound spring in a Glock.) Or you can shoot it in a .45 ACP revolver rated for +P .45ACP rated ammo. A 230-grain load fired from the .450 SMC cartridge out of a 5-inch 1911 will generate about 78 percent more recoil than a 230-grain load fired from a .45 ACP.
That is why I want a from the ground up short barrel .450 SMC/45ACP designed to handle said round accurately in combat conditions to defend both civilians and law enforcement as a concealed carry revolver. With what ever design and engineering features to make it the ultimate defensive revolver including sights, grip angel, grips, barrel, and balance.