It’s not really a magnum. It’s a Colt .45, or some say .45 Long Colt. Cartridge like the cowboys used in the wild West. Big hunk of lead, kicks like a mule,but rubber grips help. You can also used 2 1/2 inch 20 gauge shotgun shells. Love mine. Remember most gun fights take place at 5-10 feet; don’t have to be a marksman to hit the target (man) that’ll stop anybody for a pause,then if you loaded every other chamber with .45 Long Colt rounds you can send them to meet Jesus. Wish I had one of these back when I was a cop. CAUTION: Don’t confuse .45 Long Colt with .45 ACP rounds!
Correction to #29: 410 shot shell, not 20 gauge. As a gun nut I shoulda caught that.