The .375 Ruger (9.5×65.5mm) is a rimless, standard-length rifle cartridge designed for hunting large, dangerous game.
It is designed to provide an increase in performance over the .375 H&H cartridge within the context of a standard-length rifle action.
[4] Like the .376 Steyr that originates from the 9.3×64mm Brenneke and the .375 Dakota proprietary cartridge that originates from the .404 Jeffery, the .375 Ruger was designed to compete with the .375 H&H Magnum, yet have the advantage of having a rimless, beltless case and can function through a standard-length bolt-action rifle due to a shorter overall length.
The Double Tap achieves 2,825 ft/s (861 m/s) and 4,700 ft⋅lb (6,400 J) with a 270-grain Barnes TSX from a 23-inch barrel Ruger 77 African.
Combined with the fact that the .375 Ruger fits in a shorter action, it allows hunters to use rifles that are shorter, lighter, handier and cheaper than muzzle velocity wise comparable magnum-action length action rifles chambered in .375 H&H Magnum.
Mossberg & Sons produced bolt-action rifles of the "Patriot" series chambered in .375 Ruger with different stock options.
The goal was to create a shorter cartridge than the big .338 magnums that would fit in a more compact rifle with nearly the same performance.
[8] This round is designed for hunting medium- to large-sized North American game.
The round is designed particularly for use at extended range, with high cartridge case capacity for caliber, longer than typical bullet projection (a “standard” case length is paired with a “long action” cartridge overall length to prevent bullets from intruding on the powder column), and a throat design that minimizes bullet yaw prior to contact with the rifling.
The .375 Ruger cartridge case was used by Hornady as the basis for new long-range cartridges, since it had the capability to operate with high chamber pressures, which combined with a neck and barrel throat optimized for loading relatively long and heavy very-low-drag bullets without the need to seat the bullets deeply recessed into the case result in adequate muzzle velocities from bolt-action rifles.
[21][16] The .500 Bushwhacker is a semirimmed magnum handgun cartridge initially developed by fireforming the .375 Ruger case cylindrical, shortening it by 0.13 in, and threading the base for a rim.
It was designed by brothers James Tow and Keith Tow of Halsey, Oregon, to provide comparable performance to traditional African stopping rifles from the context of the Magnum Research BFR revolvers.