10 x 31mm (Auto "Magnum")
Case type Rimless, straight
Bullet diameter 10.16 mm (0.400 in)
Neck diameter 10.70 mm (0.421 in)
Base diameter 10.81 mm (0.426 in)
Rim diameter 10.85 mm (0.427 in)
Rim thickness 1.40 mm (0.055 in)
Case length 31.20 mm (0.992 in)
Overall length 43.00 mm (1.260 in)
Case capacity 2.45 cm³ (24 gr H2O)
Rifling twist 381 mm (1 in 15 in)
Primer type Large pistol
Maximum pressure 258.55 MPa (37,500 psi)
6 inch Barrel
Fullmetal Jacket- Round nose
180 gr (12 g)
Velocity 1,692 ft/s (516 m/s)
Joules- 1601
12 inch Barrel
Fullmetal Jacket- Round nose
180 gr (12 g)
Velocity 2053(626 m/s)
Joules- 2351
