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The .280 Ackley Improved (.280 AI) was the result of the .280 Remington case modification by P.O Ackley, who pushed out the sidewalls at the shoulder to near parallel and steepened the shoulder angle to 40 degrees in order to increase powder capacity, thus along with increasing the allowable pressure, resulted in increasing the bullet initial velocity by approximately 100 fps.
Since cases for the .280 RCBS could be formed by firing .280 Remington ammo in a rifle chambered for the former, Ackley abandoned the 7mm-06 Improved and started chambering rifles for the .280 RCBS. He then changed the 35-degree shoulder to 40-degrees and the .280 Ackley wildcat was born.
Parker Otto Ackley (May 25, 1903 – August 23, 1989) [1] was an American gunsmith, barrel maker, author, columnist, and wildcat cartridge developer. The Ackley Improved family of wildcat cartridges are designed to be easily made by rechambering existing firearms, and fireforming the ammunition to decrease body taper and increase shoulder angle, resulting in a higher case capacity.
List of rifle cartridges, by primer type, calibre and name. ... .280 Ackley Improved.280 British.280 Flanged.280 Jeffery.280 Remington.280 Ross.284 Winchester
With Harris as President, the company received its first of many military contract awards. Harris parlayed McMillan's reputation for high quality, high accuracy benchrest competition rifles (previously built primarily from the rifle actions of other manufacturers), to create markets for military sniper rifles and custom hunting rifles.
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Currently (2011) none of the major commercial ammunition manufacturers offer factory loaded 6.5-06 A-Square ammunition. There are smaller companies that custom load the cartridge [2] however, and hand-loading can be accomplished using the proper set of dies and using .25-06 Remington, .270 Winchester, or .30-06 Springfield brass and making the proper modifications to fit the 6.5-06 A-Square ...
The analysts' call comes as US stocks have rallied after Trump's US election win, returning 5.9% in November. Cyclical sectors fared the best amid the shift to risk-on as traders see Trump's ...