The .338-06, also known as the .338 A-Square, is a cartridge based on the .30-06. As such, it allows heavier .338 caliber bullets to be used from the .30-06 non-belted case. This can be a suitable choice for heavy bodied game such as moose, elk, and brown bear. The number and variety of .338 caliber bullets increased after the introduction in the late 1950s of the .338 Winchester Magnum cartridge, frequently chambered in the

Winchester Model 70 The Winchester Model 70 is a bolt-action sporting rifle. It has an iconic place in American sporting culture and has been held in high regard by shooters since it was introduced in 1936, earning the moniker "The Rifleman's Rifle". The action has s ...

rifle. More recently the introduction of the .338 Lapua Magnum has caused an increase in interest in the .338 caliber and their projectiles. The .338-06 maintains many of the benefits of the .338 Winchester Magnum cartridge but has substantially less

recoil Recoil (often called knockback, kickback or simply kick) is the rearward thrust generated when a gun is being discharged. In technical terms, the recoil is a result of conservation of momentum, for according to Newton's third law the force requ ...

, makes more efficient use of

powder A powder is a dry solid composed of many very fine particles that may flow freely when shaken or tilted. Powders are a special sub-class of granular materials, although the terms ''powder'' and ''granular'' are sometimes used to distinguish se ...

, and allows use of widely available .30-06 commercial and military cases. It is similar in concept to the older wildcat .333 OKH cartridge, as well as the .35 Whelen, which also use the .30-06

brass Brass is an alloy of copper and zinc, in proportions which can be varied to achieve different colours and mechanical, electrical, acoustic and chemical properties, but copper typically has the larger proportion, generally copper and zinc. I ...

case as a basis for the cartridge. Thanks to the large number of rifles based on the .30-06 family of cartridges, having a .338-06 made usually only requires a simple barrel change by a competent gun smith. Since the 1960's a relatively obsure cartridge only known to handloaders and "Wildcatters", eventually A-Square adopted the caliber as the .338-06 A-Square in approximately 1998. They then submitted it for approval by SAAMI as a standardized caliber. Weatherby offered factory rifles and ammunition, but has now dropped the rifles from its inventory. The .338-06 A-Square tends to have a velocity advantage over the .35 Whelen, and uses bullets that retain velocity and resist wind drift better than similar weight bullets fired from the .35 Whelen due to an improved

Sectional density Sectional density (often abbreviated SD) is the ratio of an object's mass to its cross sectional area with respect to a given axis. It conveys how well an object's mass is distributed (by its shape) to overcome resistance along that axis. Secti ...

Practical Use

The .338-06 is a versatile cartridge for hunting bigger game. Loaded with light weight bullets, such as the 180gr. Nosler Accubond, it is adequate for species like deer or pronghorn at medium to long range, and when loaded with heavier premium bullets like the 225gr. Nosler Partition or even the 250gr partition the .338-06 can handle the largest North America game including moose and brown bear. Rifles chambered in .338-06 need not be as heavy as a .338 Winchester Magnum or other .338 magnums; therefore, .338-06 chambered rifles are desirable for mountain hunting or where excessive weight is an issue. While the .338-06 performs well from a 22" barrel most magnum rifle cartridges in the same caliber, such as the .340 Weatherby, require a longer 24-26" barrel to reach their full potential.

References

.338-06 at Quarterbore.com

.338-06 reloading data
from Reloaders Nest

Bibliography

External links

Jagen Weltweit, .338-06 by Norbert Klups Bullet drop at 100 to 400 yards
{{DEFAULTSORT:338-06 Pistol and rifle cartridges Wildcat cartridges

Practical Use

See also

References

Bibliography

External links