I just can't believe we're on page 3 of this thread, and nobody has claimed that the 10mm is a .44 mag equivalent. .45 auto is going to be outmatched by a full power 10mm, but the .45 is operating at around half the pressure. Even out the pressures (a la .45 Super) and it's a different story altogether. I can tell you I can get 5 .45 auto slugs on a hunk of steel in the time it takes me to get 3 10mm's on target. To me, the 10mm is the great in-betweener in pistol cartridge history. A potent round for a bottom feeder, but at the cost of blast and recoil compared to most service cartridges... but compared to most revolver cartridges, it lacks the horsepower to keep up. Again, has a place somewhere between the two. The real comparison in my mind is against .357 magnum.