The 6.5-06 A-Square is a

centerfire Two rounds of .357 Magnum, a centerfire cartridge; notice the circular primer in the center A centerfire cartridge is a firearm metallic cartridge whose primer is located at the center of the base of its casing (i.e. "case head"). Unlike rim ...

rifle

cartridge Cartridge may refer to: Objects * Cartridge (firearms), a type of modern ammunition * ROM cartridge, a removable component in an electronic device * Cartridge (respirator), a type of filter used in respirators Other uses * Cartridge (surname), a ...

that originated as a

wildcat The wildcat is a species complex comprising two small wild cat species: the European wildcat (''Felis silvestris'') and the African wildcat (''F. lybica''). The European wildcat inhabits forests in Europe, Anatolia and the Caucasus, while th ...

, based on the popular

.30-06 Springfield The .30-06 Springfield cartridge (pronounced "thirty- aught-six" ), 7.62×63mm in metric notation, and called the .30 Gov't '06 by Winchester, was introduced to the United States Army in 1906 and later standardized; it remained in military use ...

A-Square A-Square Company, LLC was a manufacturer of rifles, ammunition and bullets based in Chamberlain, South Dakota in the United States. The company was one of 19 that are members of the Sporting Arms and Ammunition Manufacturer's Institution (SAAMI) ...

standardized the dimensions of the cartridge and submitted them to SAAMI in 1997.

Design

The 6.5-06 A-Square uses a .264" diameter bullet loaded into a modified .30-06 Springfield cartridge. The neck is reduced to accept the smaller bullet, the shoulder is longer than that of the parent cartridge, and it has a 17.5 degree shoulder angle leading to the neck of the case, where the bullet is seated. The Ackley Improved version of the cartridge uses a sharper shoulder angle and has a case capacity of 72 gr of water.

Uses

The 6.5-06 A-Square has power similar to that of the

.270 Winchester The .270 Winchester is a rifle cartridge developed by Winchester Repeating Arms Company in 1923 and unveiled in 1925 as a chambering for their bolt-action Model 54The Complete Reloading Manual for the .270 Winchester, Loadbooks USA, Inc., 2004 ...

and

.308 Winchester The .308 Winchester is a smokeless powder rimless bottlenecked rifle cartridge widely used for hunting, target shooting, police, military, and personal protection applications globally. It is similar but not identical to the 7.62×51mm NATO ...

, making it suitable for hunting medium-sized game such as deer and black bear. It is also used in competitions such as F-Class and Benchrest formats.

Availability of ammunition

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 however, and hand-loading can be accomplished using the proper set of dies and using

.25-06 Remington Considered by many as the most balanced of the "quarter bores" for hunting medium-sized game, the .25-06 Remington remained in obscurity as a wildcat cartridge for nearly half a century before being standardized by Remington in 1969. Its design ...

, .270 Winchester, or .30-06 Springfield brass and making the proper modifications to fit the 6.5-06 A-Square chamber. After firing, the brass from the original cartridge (.25-06 Remington, .270 Winchester, or .30-06 Springfield) will be fire-formed to the exact dimensions of the 6.5-06 A-Square chamber.

Firearms chambered for 6.5-06 A-Square

As of 2011, A-Square listed two different rifles factory chambered in 6.5-06 A-Square; the Hamilcar and the Genghis Khan. Several of the major custom barrel manufacturers offer the 6.5-06 A-Square (sometimes listed simply as 6.5-06) chamber as an option for builders of custom rifles. However, On 15 February 2012, the A-Square Company ceased to exist.

References

{{Reflist Pistol and rifle cartridges Wildcat cartridges

Design

Uses

Availability of ammunition

Firearms chambered for 6.5-06 A-Square

See also

References