Search results
Results from the WOW.Com Content Network
Grains are used worldwide for measuring gunpowder and smokeless powder charges. Historically, the dram ( 27 + 11 ⁄ 32 grains; not to be mixed up with the apothecaries' dram of 60 grains) has also been used worldwide for measuring gunpowder charges, particularly for shotguns and large black-powder rifles .
Black powder substitutes are measured by volumetric measurement techniques, not in grains on a scale, due to the difference in density compared to black powder. For example, to measure a "60 grain equivalent" of black powder substitute suitable for use in a muzzleloader rifle, one uses a volumetric measure that produces a volume of black powder ...
These powder measures typically use gravity feed from a hopper of powder above an adjustable cavity in a rotating cylinder. [3] A lever rotates the cylinder so the cavity moves between an upward position where powder can drain from the hopper into the cavity, and a lower position where the powder can drain from the cavity into an empty ...
Gunpowder is very easily ignited by static electricity or lightning strikes, and most powder mills experienced occasional accidental explosions. Powder mill explosions typically destroyed an entire building and killed those working in the vicinity of the building. Explosions might throw flaming debris which could ignite other buildings.
A cartridge, [1] [2] also known as a round, is a type of pre-assembled firearm ammunition packaging a projectile (bullet, shot, or slug), a propellant substance (smokeless powder, black powder substitute, or black powder) and an ignition device within a metallic, paper, or plastic case that is precisely made to fit within the barrel chamber of ...
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 .
Gunshot residue from a pistol shot. Gunshot residue (GSR), also known as cartridge discharge residue (CDR), gunfire residue (GFR), or firearm discharge residue (FDR), consists of all of the particles that are expelled from the muzzle of a gun following the discharge of a bullet.
By 1880 naval guns were using Hexagonal grains, 1 inch (25 mm) in height. [2] Very large grain powders, being subject to defects in manufacturing, did not completely remove the danger of overpressure, as demonstrated in the 1880 accident on the Italian ironclad Duilio, which involved powder made at the chemical works at Fossano. [3]