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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.
The .30 ICL is an improved .264 Winchester Magnum necked up to .308 and a pushed-back shoulder to create the steep angle common to all ICL cartridges and a long neck for improved handloading. Performance with a 150-grain (9.7 g) bullet is approximately 3,545 ft/s (1,081 m/s) and with a 180-grain (12 g) bullet is approximately 3,185 ft/s (971 m/s).
The .375 Weatherby Magnum was designed by Roy Weatherby in South Gate, California, in 1944 and put into production in 1945. The original cases were fire formed from .300 H&H Magnum Winchester brass, then from Richard Speer's 300 Weatherby brass [3] before finally settling with Norma as a source for cases.
For handloaders, two versions of reloading dies were manufactured, early dies and later dies that conformed to SAAMI specs (cf .280 Ackley Improved). If barrel length and chamber pressure are equal, the .280 Ackley Improved is about 100 fps faster with all bullet weights than the standard .280 Remington.
The .270 Winchester is a rifle cartridge developed by Winchester Repeating Arms Company in 1923, and it was unveiled in 1925 as a chambering for their bolt-action Model 54 [3] to become arguably the flattest shooting cartridge of its day, only competing with the .300 Holland & Holland Magnum, also introduced in the same year.
The .270 Weatherby Magnum was the first belted magnum based on the .300 H&H Magnum to be developed by Roy Weatherby in 1943. [2] The cartridge is short enough to function in standard-length long actions with a brass length of 2.549" or 64.74mm and an overall length of about 3.295".
After the incident, Ackley called authorities to report the Bigfoot sighting, but they insisted she had seen a bear. In 2018, The Sun spent time with Ackley in the San Bernardino Mountains ...
The 270 Winchester Short Magnum or 270 WSM is a short magnum cartridge created by necking down the .300 Winchester Short Magnum and fitting it with a .277 caliber bullet. The correct name for the cartridge, as listed by the Sporting Arms and Ammunition Manufacturers' Institute ( SAAMI ), is 270 WSM, without a decimal point. [ 3 ]