.375 Ruger

The .375 Ruger is a rimless, standard-length rifle cartridge designed for the hunting of large dangerous game. It is designed to provide an increase in performance over the .375 H&H cartridge, yet to be chambered in a standard length action rifle. Wikipedia
 
Case length2.580 in (65.5 mm)
Parent caseUnique
Case capacity99.0 gr H2O (6.42 cm3)
Rifling twist1-12" (304.8 mm)
Bullet diameter.375 in (9.5 mm)
Overall length3.340 in (84.8 mm)
Base diameter.532 in (13.5 mm)