The sites are replete with .45 vs 9mm, and the consensus is on both sides to pack more ammo. But I can get off six .44 magnum real quick and stay on target, reload is as quick as with any other DA. I have seen .44 magnum pulverize cement filled cinder blocks, explode bullet proof vest, group within a snuff can lid @ 75 feet. But everyone wants to continue with .45 vs 9mm, with maybe a little .357 mag, maybe some .40 thrown in there. Let's pretend the .44 magnum simply doesn't exist, then.