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A grain is a unit of measurement of mass, and in the troy weight, avoirdupois, and apothecaries' systems, equal to exactly 64.798 91 milligrams. It is nominally based upon the mass of a single ideal seed of a cereal. From the Bronze Age into the Renaissance, the average masses of wheat and barley grains were part of the legal definitions of ...
Rounds are available from 68-to-300-grain (4.4 to 19.4 g) with a common load being the standard military loading of a 230-grain (15 g) FMJ bullet (for comparison, the most common 9mm load is 115 grains (7.5 g), half the weight). Specialty rounds are available in weights under 100 grains (6.5 g) and over 260 grains (17 g); popular rounds among ...
Other black powder-era cartridges used naming schemes that appeared similar, but measured entirely different characteristics; 45-70, 44-40, and 32-20 were designated by bullet diameter to hundredths of an inch and standard black powder charge in grains. Optionally, the bullet weight in grains was designated, such as 45-70-405. [2]
.950 JDJ cases are approximately 70 mm in length, and are based on a 20×102mm Vulcan case shortened and necked up to accept the .950 in (24.1 mm) bullet. Projectiles are custom-made and most commonly weigh 3,600 grains (230 g) which is 8.2 ounces or over half a pound.
400 gr (26 g) 1,300 ft/s (400 m/s) 1,501 ft⋅lbf (2,035 J) The .45-90 Sharps, also known as the .45-210" Sharps, is a black powder rifle cartridge introduced in 1877 by the Sharps Rifle Manufacturing Company and was developed for hunting and long range target shooting. In the modern day, it is used for Black Powder Cartridge Rifle competitions.
The bullet differs by only .026 inches in bullet diameter and 20 grains (1.3 g) in standard bullet weight from the original .44-40. The goal may have been to reduce recoil while maintaining a similar bullet sectional density. [ 4 ]
The SNL was an inventory system used from 1930 to 1958 to catalog all the items the Army's Ordnance Corps issued. The AIC was used by the United States Army Ordnance Corps from January, 1942 to 1958. It listed munitions and explosives (items from SNLs P, R, S, and T), items that were considered priority issue for soldiers in combat.
Other times, a similar three-number system indicated bore (caliber), charge (grains), and bullet weight (grains). The 45-70-500 Government is an example. Often, the name reflects the company or individual who standardized it, such as the .30 Newton , or some characteristic important to that person.