Английская Википедия:.25-06 Remington
Шаблон:Short description Шаблон:Infobox firearm cartridge 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 was based on the .30-06 Springfield cartridge necked-down (case opening made narrower) to .257 caliber keeping a similar cartridge length of its parent case, thus being chambered in standard-length actions. Nominal bullet diameter is 0.257 in, and bullet weights range from Шаблон:Convert.
History
Charles Newton necked down the .30-06 Springfield cartridge in 1912 to accept a 117-grain .25-35 Winchester bullet,[1] but the resulting .256 Newton cartridge did not catch on. Newton's early modification encouraged commercial release of a shortened case (from 63 to 49 mm) as the .250-3000 Savage in 1915.[2] Frankford Arsenal developed an experimental .25-06 during World War I; and distribution of surplus United States military equipment through the Civilian Marksmanship Program following the war encouraged independent gunsmiths to experiment with the cartridge.[1] A. O. Niedner of Dowagiac, Michigan, introduced rifles for the .25 Niedner in 1920.[3] Niedner Arms Corporation retained the 17° 30Шаблон:Prime .30-06 shoulder chambering .25 caliber barrels rifled with one twist in Шаблон:Convert.[4] Similar cartridges were identified as the .25 Hi-Power, .25 Whelen (analogous to .35 Whelen), or .25-100-3000 (to indicate the ability to achieve 3,000 feet-per-second with a 100-grain bullet rather than the 87-grain bullet used in the .250-3000 Savage). Greater case capacity offered minimal velocity improvement over the .250-3000 Savage case with contemporary smokeless powders.[5] Availability of DuPont's Improved Military Rifle (IMR) powders encouraged commercial release of the .257 Roberts using the 57 mm Mauser case in 1934.[6] Release of IMR 4350 in 1940 and availability of surplus 4831 powder salvaged from Oerlikon 20 mm cannon cartridges after World War II greatly improved performance of the full-length .25-06 case.[7]
Performance
Most .25-caliber bullets have high ballistic coefficients without being heavy, which, combined with the large case capacity of its parent .30-06 case, allows relatively high muzzle velocities without heavy recoil. The combination of high ballistic coefficients with high muzzle velocities gives the .25-06 a very flat trajectory as well as retaining kinetic energy down-range.
The cartridge is capable of propelling a 117 grain (7.6 g) bullet at up to 3,200 feet per second (980 m/s) and energy levels up to Шаблон:Convert. Bullets lighter than 75 grains are available in .257 caliber but were designed for the smaller .25-20 Winchester and .25-35 Winchester cartridges and are too lightly constructed for the high velocities of the .25-06.
The cartridge has less felt recoil than a .30-06 in a similar-weight rifle, due to the lighter-weight bullets used. Shooters who are recoil sensitive will find the recoil from the .25-06 easier on the shoulder, contributing to good shot placement. This cartridge is not quite as powerful as the .257 Weatherby Magnum, usually running Шаблон:Convert slower with a given bullet weight, but almost 200 ft/s faster than the .257 Roberts at its hottest loads (i.e. .257 Roberts +P).[8]
SAAMI pressure limit for the .25-06 is 63,000 PSI.
Sporting uses
The .25-06 is generally considered to be a good round for medium-sized game such as deer and antelope because of its combination of substantial kinetic energy and moderate recoil. The addition of a flat trajectory makes it particularly popular in open terrains such as plains and mountains, where longer-range shots on game are not seldom, since its flat trajectory forgives range-estimation errors up to 300 yards if sighted to its maximum point blank range.
Bullets of different weights and construction make the .25-06 Remington a fine alternative for hunting species ranging from prairie dogs and coyotes to mid-sized deer and sheep. Although capable of taking heavier game such as elk, many hunters prefer a larger caliber and a heavier bullet for larger species.
Bullets range from lightly constructed 75-grain bullets with muzzle velocities in the 3,700 ft/s (1,130 m/s) range to more robust 120-grain bullets with muzzle velocities in the 3,000 ft/s (915 m/s) range. Most manufacturers of bolt-action or single-shot rifles offer the .25-06 as a standard chambering and factory loaded ammunition is available from Remington, Winchester, Federal Cartridge and most other major manufacturers.
See also
- List of rifle cartridges
- Table of handgun and rifle cartridges
- .250-3000 Savage
- .25 WSSM
- .257 Roberts
- .257 Weatherby Magnum
- .30-06 Springfield wildcat cartridges
- 6 mm caliber
- Delta L problem
- Sectional density
References
- Hornady Handbook of Cartridge Reloading vol I, Sixth Edition; Book by Hornady Mfg Co., 2003 p. 233
External links
Шаблон:Remington Cartridges Firearms Шаблон:.30-03 Springfield
- ↑ 1,0 1,1 Шаблон:Cite magazine
- ↑ Hornady, J.W. Hornady Handbook of Cartridge Reloading Hornady Manufacturing Corporation (1967) p.104
- ↑ Hornady, J.W. Hornady Handbook of Cartridge Reloading Hornady Manufacturing Corporation (1967) p.116
- ↑ Lyman Ideal Hand Book No. 36 Lyman Gun Sight Corporation (1949) p.138
- ↑ Speer, Raymond G. Wildcat Rifle Loads Speer Products Company (1956) p.6
- ↑ Hatcher, Julian S. & Barr, Al Handloading National Rifle Association (1951) pp.53-59
- ↑ ".25-06 Remington" data from Accurate Powder
- ↑ Шаблон:Cite web
