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The .350 Legend, also called 350 LGND (9×43mmRB), is a SAAMI-standardized [2] straight-walled intermediate rifle cartridge developed by Winchester Repeating Arms. The cartridge was designed for use in American states that have specific regulations for deer hunting with straight-walled centerfire cartridges.
The .360 Buckhammer, also called 360 BHMR (9.1×46mmR), is a SAAMI-standardized [2] straight-walled rifle cartridge developed by Remington Arms Company. [3] The cartridge was designed for use in American states that have specific regulations for deer hunting with straight-walled centerfire cartridges.
The .458 SOCOM (11.63×40mmRB) is a moderately large round designed to work in an AR-15 platform.This is achieved by installing a 458 bolt and barrel. The 300-grain (19 g) round offers a supersonic muzzle velocity of 1,900 ft/s (580 m/s) and 2,405 ft⋅lbf (3,261 J), [1] similar to a light .45-70 but with a much smaller case.
The .375 SOCOM is a fairly new cartridge, designed by Tromix in 2013. Taking a .458 SOCOM cartridge case and sizing the neck down to .375 caliber, resulted in a hard hitting AR-15 compatible cartridge, that has a considerable velocity and range advantage over the .458 SOCOM as well as other big bore AR-15 cartridges.
The .425 Westley Richards (11x67mmRB) is one of the classic African big-game rounds.It is a cartridge invented by Leslie Bown Taylor of Westley Richards, a gunmaking firm of Birmingham, England in 1909 as a proprietary cartridge for their bolt-action rifles.
This cartridge is based on the rimless .30 M1 Carbine case, which has almost the same rim diameter as a .22 Hornet but has fewer potential feeding problems in some rifles because of the lack of a rim. [2] The 19 Badger is Calhoon's personal favorite of all of his 19 caliber cartridges.
Another influence was a series of 6 mm cartridges developed for bench-rest target shooting competitions in the 1970s. The idea behind these cartridges was that a short, fat cartridge would be more "efficient" than the traditional long, narrow cartridge, as more of the powder column would be in the immediate vicinity of the primer as it detonated.
The 6mm XC was initially developed as a Wildcat cartridge specifically for NRA High Power match shooting by 11-time US National Champion David Tubb. [2] [3] The round originated from chambering a barrel using a .243 Winchester reamer held short, with the case reformed from .22-250. [2]