7.62×25mm Tokarev

The 7.62×25mm Tokarev cartridge is a Russian rimless bottlenecked pistol cartridge widely used in former Soviet satellite states, and in China and Pakistan among other countries. The cartridge has since been replaced in most capacities by the 9×18mm Makarov in Russian service.Wikipedia
 
Bullet diameter7.82 mm (0.308 in)
Case length25.00 mm (0.984 in)
Case capacity1.09 cm3 (16.8 gr H2O)
Neck diameter8.49 mm (0.334 in)
Rifling twist240 mm (1:9.45 inches)
Rim diameter9.95 mm (0.392 in)