Originally posted by rshubert
7.62 x 25 is a relatively anemic pistol cartridge. Even with the improvements in performance due to the longer SMG barrel, it is still anemic. Much less power than 9mm, or .30 carbine, or 9x18 Tokarev...
And certainly much less power than the American standard for evaluating pistol performance, the .45 ACP.
Why not to just use a 20mm pistol, if bigger is better in that way.
9mm is used in more submachineguns than any other caliber.
Of course 7.62 is alot used if you count in the russians and chinese with the massive amounts of different models of PPSh and couple of others.
7.62X25 Tokarev
Mass = 85 Velocity = 1187
Kinetic Pulse = 119.112 kp
Kinetic Energy = 265.881 ft-lb
Momentum = 0.448 slug f/s
Energy/Momentum = 593.500 E/M
9mm Luger
Mass = 115 Velocity = 1007
Kinetic Pulse = 133.121 kp
Kinetic Energy = 258.895 ft-lb
Momentum = 0.514 slug f/s
Energy/Momentum = 503.500 E/M
9mm Luger
Mass = 147 Velocity = 909
Kinetic Pulse = 159.989 kp
Kinetic Energy = 269.657 ft-lb
Momentum = 0.593 slug f/s
Energy/Momentum = 454.500 E/M
45 ACP
Mass = 230 Velocity = 816
Kinetic Pulse = 283.328 kp
Kinetic Energy = 339.997 ft-lb
Momentum = 0.833 slug f/s
Energy/Momentum = 408.000 E/M