Fella's;
So what? It's just another wimp-gun. A veritable weak-kneed bedwetter as it were. Comparing energy figures to the modern handguns of .454 Casull ilk & up, it's just an ephemeral wisp of a thing.
I took a look at Hornady #6, volume II, just because. Now Hornady doesn't list that particular bullet weight & velocity, but conclusions can be drawn.
Let's take a 300 grain bullet & launch it at 700 fps. Muzzle energy is given as: 326 ft lbs. OK, now let's bump the bullet weight to 400 grains & push it to 1100 fps, the slowest speed given in the tables for that bullet. Energy is 1075 ft. lbs. I do believe that Hell Boy's gun has been trumped by a rather less-than-max load for the .480 Ruger.
But wait, there's more! Here comes the .500 S&W, pushing a 500 grain bullet to 1350 fps in the Hornady #7 manual. See what I mean?
900F