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C-6–C-7 The dram apothecaries is equal to 3 scruples (s ap or ℈) or 60 grains (gr), [5]: C-7 or exactly 3.887 9346 grams. [5]: C-14 "Dram" is also used as a measure of the powder charge in a shotgun shell, representing the equivalent of black powder in drams avoirdupois. [16]
Loads (bullet weights and gunpowder loads) varied greatly. As the weight and strength increased, gunpowder loads went from 8 drams (0.5 oz, 218.75 grains, or 14.17 grams) of powder to a full ounce (16 drams, 437.5 grains, or 28.35 grams). The advent of rifling after about 1860, allowed longer conical projectiles to be stabilised, and, aside ...
Comparison of .577 Black Powder Express, .303 British & 8 bore bullets The most common 8 bore cartridges used paper cases, much like shotgun shells, and true .835 in (21.2 mm) caliber projectiles. A larger version utilising a thin brass case was also available, although it fired .875 in (22.2 mm) projectiles, in reality making it a 7 bore.
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.
dram now meant only avoirdupois drams, which were 1 ⁄ 16 of an avoirdupois ounce. An ounce consisted of 437.5 grains, thus making the dram approximately 27.34 grains. drachm now meant only apothecaries' drachms, which were 1 ⁄ 8 of an apothecaries' ounce of 480 grains, thus equal to 60 grains.
According to Spearman in The British Gunner, the standard service charge for the Brown Bess was 6 drams (165 grains) of black powder, including the powder used for priming. However, Spearman also mentioned that "the service charges given in [the] table, although established by authority, [were] too great, and [could] be reduced by about one ...
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 ...
The U.S. Navy also contracted with Remington to produce several thousand rolling-block carbines chambered for a reduced load version which was officially produced for use only in carbines, using a shortened .50-70 with a 430-grain (28 g) bullet and 45 grains (2.9 g) of black powder.