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- Richard J. Casull (/kəˈsuːl/) (February 15, 1931 – May 6, 2018) was a Salt Lake City-born gunsmith and wildcat cartridge developer whose experiments with .45 Colt ammunition in the 1950s led to the creation of the .454 Casull cartridge. Casull's passion was six-shooters, and he was determined to create a high velocity round for the .45 Colt. His goal was to achieve a muzzle velocity of 2,000 feet per second with Colt .45 rounds fired from a single-action Army-style revolver with a 7+1⁄2inch barrel. This proved impossible due to the tensile strength of the Colt .45 cylinder, so he set out to develop his own casing and bullet. Casull began his career as a wildcat cartridge developer after having contact with Elmer Keith in the 1940s, an Idaho rancher, firearms enthusiast, and author. Keith was instrumental in the development of the first magnum revolver cartridge, the .357 Magnum, as well as the later .44 Magnum and .41 Magnum cartridges. Keith was instrumental in the development of various wildcat cartridges, a few of which were later adopted as factory rounds. Casull also worked with Oregon-based gunsmith P.O. Ackley, the famous wildcat cartridge developer. Ackley developed a family of improved wildcat cartridges by rechambering extant firearms and fireforming the ammunition to decrease body taper and increase shoulder angle, resulting in a higher case capacity. Ackley improved not only standard cartridges but was the creator of the first .17 caliber (4.5 mm) centerfire cartridge. He developed the .450 Ackley Magnum (based on a .375 H&H Magnum case necked up to .458) and the (based on a .375 H&H Magnum necked up to .475 (12 mm)). (en)
- Richard J. "Dick" Casull (/ kə'sul /) (15 de fevereiro de 1931 Salt Lake City, Utah — 06 de maio de 2018 Freedom, Lincoln, foi um armeiro e desenvolvedor de cartuchos wildcat nascido em Salt Lake City cujas experiências com munição .45 Colt tentando conseguir uma velocidade de saída de 2.000 ft/s na década de 1950 levou à criação do cartucho .454 Casull em 1957 juntamente com . (pt)
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- Richard J. "Dick" Casull (/ kə'sul /) (15 de fevereiro de 1931 Salt Lake City, Utah — 06 de maio de 2018 Freedom, Lincoln, foi um armeiro e desenvolvedor de cartuchos wildcat nascido em Salt Lake City cujas experiências com munição .45 Colt tentando conseguir uma velocidade de saída de 2.000 ft/s na década de 1950 levou à criação do cartucho .454 Casull em 1957 juntamente com . (pt)
- Richard J. Casull (/kəˈsuːl/) (February 15, 1931 – May 6, 2018) was a Salt Lake City-born gunsmith and wildcat cartridge developer whose experiments with .45 Colt ammunition in the 1950s led to the creation of the .454 Casull cartridge. Casull's passion was six-shooters, and he was determined to create a high velocity round for the .45 Colt. His goal was to achieve a muzzle velocity of 2,000 feet per second with Colt .45 rounds fired from a single-action Army-style revolver with a 7+1⁄2inch barrel. This proved impossible due to the tensile strength of the Colt .45 cylinder, so he set out to develop his own casing and bullet. (en)
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- Dick Casull (en)
- Dick Casull (pt)
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