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The .375 Weatherby Magnum was designed by Roy Weatherby in South Gate, California, in 1944 and put into production in 1945. The original cases were fire formed from .300 H&H Magnum Winchester brass, then from Richard Speer's 300 Weatherby brass [3] before finally settling with Norma as a source for cases.
The .375 Flanged Magnum (9.5×75mmR), also known as the .375 H&H Flanged Magnum is the companion cartridge to the .375 H&H Magnum for use in double rifles and was released together with the .375 H&H Magnum by Holland & Holland. It is a rimmed (flanged) cartridge and is loaded to a lower pressure level of 47,000 psi (320 MPa).
The .375 Viersco Magnum (9.5 x 87.5mm) is a rimless, magnum-length rifle cartridge designed for the hunting of large game and long-range competition shooting. The case is engineered with a wider than typical .532" or .640" magnum base, increasing case volume to improve long-range performance.
While the .375 H&H Magnum is longer than the .375 Ruger, the latter cartridge has a 4% greater case capacity than the Holland & Holland cartridge, 99 gr. of water (6.42 cm 3) compared to the H&H's 95. This is due to the .375 H&H Magnum having a long, tapered body, while the .375 Ruger follows modern cartridge designs in that it has very little ...
In some instances, the powder may not have even been fully burned in guns with short barrels. So, the muzzle velocity of a 2-inch (51 mm) barrel is less than that of a 4-inch (100 mm) barrel, which is less than that of a 6-inch (150 mm) barrel. Large naval guns will have high length-to-diameter ratios, ranging between 38:1 to 50:1. This length ...
The .375 SOCOM is a fairly new cartridge, designed by Tromix in 2013. Taking a .458 SOCOM cartridge case and sizing the neck down to .375 caliber, resulted in a hard hitting AR-15 compatible cartridge, that has a considerable velocity and range advantage over the .458 SOCOM as well as other big bore AR-15 cartridges.
The .470 Capstick is a belted magnum with the same rim and belt size as a .375 H&H. The case has a length of 2.800 inches (71.1 mm), and the overall cartridge length is 3.65 inches (93 mm). A cartridge drawing is shown below for dimensions. The .470 Capstick will fit in the same length action as the .375 H&H Magnum and .458 Lott. Actually the ...
The .375 Remington Ultra Magnum, also known as the .375 RUM is a .375 rifle cartridge introduced by Remington Arms in 2000. The cartridge is intended for large and dangerous game. [1] It is a beltless, rebated rim cartridge created by necking up the .300 Remington Ultra Magnum case to .375 caliber with no other changes. [1]