Blasons

1991 · réf. 79874 — McEwen TN: Accurate Arms Company Inc 1991. Second printing stated. Wraps. Very good. 32 pages. Oversized book measuring 11 inches by 8-1/2 inches. Includes Introduction Safety Notes and information on Handguns and Rifles. Also includes Loading Data for Accurate 2700 which requires high loading density as well as heavier bullet weights. Two items of ephemera have been laid in--one is a product flyer on Accurate Smokeless Powders and one on Data for Accurate 2015br. The Accurate 2015br news release was addressed to John Lyman The Tarheel Gunner who was a noted naval and arms authority. Smokeless powder is the name given to a number of propellants used in firearms and artillery that produce negligible smoke when fired unlike the gunpowder or black powder they replaced. The term is unique to the United States and is generally not used in other English-speaking countries which initially used proprietary names such as "Ballistite" and "Cordite" but gradually shifted to "propellant" as the generic term. The basis of the term smokeless is that the combustion products are mainly gaseous compared to around 55% solid products mostly potassium carbonate potassium sulfate and potassium sulfide for black powder. Despite its name smokeless powder is not completely free of smoke; while there may be little noticeable smoke from small-arms ammunition smoke from artillery fire can be substantial. This article focuses on nitrocellulose formulations but the term smokeless powder was also used to describe various picrate mixtures with nitrate chlorate or dichromate oxidizers during the late 19th century before the advantages of nitrocellulose became evident. Since the 14th century gunpowder was not actually a physical "powder" and smokeless powder can be produced only as a pelletized or extruded granular material.citation needed Smokeless powder allowed the development of modern semi- and fully automatic firearms and lighter breeches and barrels for artillery. Burnt gunpowder leaves a thick heavy fouling that is hygroscopic and causes rusting of the barrel. The fouling left by smokeless powder exhibits none of these properties though some primer compounds can leave hygroscopic salts that have a similar effect; non-corrosive primer compounds were introduced in the 1920s. This makes an autoloading firearm with many moving parts feasible which would otherwise jam or seize under heavy black powder fouling. Smokeless powders are classified as typically division 1.3 explosives under the UN Recommendations on the transportation of Dangerous goods - Model Regulations regional regulations such as ADR and national regulations. However they are used as solid propellants; in normal use they undergo deflagration rather than detonation. Accurate Arms Company, Inc paperback