.22-250 Remington

.22-250 Remington
File:22-250 Remington.JPG
Type	Rifle
Place of origin	USA
Production history
Designer	Grosvenor Wotkyns, J.E Gebby & J.E. Smith
Designed	1937
Manufacturer	Remington
Produced	1965-Present
Variants	.22-250 Ackley Improved
Specifications
Parent case	.250-3000 Savage
Bullet diameter	.224 in (Bad rounding here mm)
Neck diameter	.254 in (Bad rounding here mm)
Shoulder diameter	.414 in (Bad rounding here mm)
Base diameter	.469 in (Bad rounding here mm)
Rim diameter	.473 in (Bad rounding here mm)
Case length	1.912 in (Bad rounding here mm)
Overall length	2.35 in (Bad rounding here mm)
Rifling twist	1-12, 1-14
Primer type	Large rifle
Ballistic performance
Bullet weight/type	Velocity	Energy
40 gr (Bad rounding here g) BT	4,224 ft/s (Bad rounding here m/s)	1,585 ft·lbf (Bad rounding here J)
50 gr (Bad rounding here g) SP	3,945 ft/s (Bad rounding here m/s)	1,728 ft·lbf (Bad rounding here J)
55 gr (Bad rounding here g) SP	3,786 ft/s (Bad rounding here m/s)	1,751 ft·lbf (Bad rounding here J)
60 gr (Bad rounding here g) BT	3,580 ft/s (Bad rounding here m/s)	1,708 ft·lbf (Bad rounding here J)
64 gr (Bad rounding here g) Power Point	3,500 ft/s (Bad rounding here m/s)	1,741 ft·lbf (Bad rounding here J)
Source(s): Hodgdon

File:22-250-Remington-scheme.svg

.22-250 Remington maximum C.I.P. cartridge dimensions. All sizes in millimeters (mm) / Imperial (inches).

The .22-250 Remington is a very high-velocity (capable of reaching over 4000 feet per second), short action, .22 caliber rifle cartridge primarily used for varmint hunting and small game hunting, though it finds occasional use on deer. This cartridge is also sometimes known as the 22 Varminter or the 22 Wotkyns Original Swift. Along with the .220 Swift, the .22-250 was one of the high-velocity 22 caliber cartridges that developed a reputation for remote wounding effects known as hydrostatic shock in the late 1930s and early 1940s.

History

The .22-250 started life as a wildcat cartridge developed from the .250 Savage case necked down to take a .224 caliber bullet. In the early days of the cartridge there were several different versions that varied only slightly from one to the next, including one developed in 1937 by Grosvenor Wotkyns, J.E. Gebby and J.E. Smith who named their version the 22 Varminter.

The .22-250 is similar to, but was outperformed by the larger .220 Swift cartridge. However, it is in much wider use and has a larger variety of commercially available factory ammunition than the Swift. This makes it generally cheaper to shoot. The smaller powder load also contributes to longer barrel life, an important factor for high-volume shooters. Due to its rimless case the 22-250 also feeds from a box magazine with ease.

In 1937 Phil Sharpe, one of the first gunsmiths to build a rifle for the .22-250 and long time .220 Swift rifle builder, stated, "The Swift performed best when it was loaded to approximately full velocity," whereas, "The Varminter case permits the most flexible loading ever recorded with a single cartridge. It will handle all velocities from 1,500ft/s up to 4,500ft/s."

Sharpe credited the steep 28-degree shoulder for this performance. He insisted that it kept the powder burning in the case rather than in the throat of the rifle, as well as prevented case stretching and neck thickening. "Shoulder angle ranks along with primer, powders, bullets, neck length, body taper, loading density and all those other features," he wrote. "The .22 Varminter seems to have a perfectly balanced combination of all desirable features and is not just an old cartridge pepped up with new powders."

Accuracy was consistently excellent, with little need for either case trimming or neck reaming, and Sharpe pronounced it "my choice for the outstanding cartridge development of the past decade." He finished by saying he looked forward to the day when it would become a commercial cartridge.

Commercial acceptance

In 1963 the Browning Arms Company started to chamber its Browning High Power Rifle in the .22-250, at the time a wildcat cartridge. This was a risky yet historical move on Browning's part as there was no commercial production of the .22-250 at the time. John T. Amber, reporting on the development of the Browning rifle in the 1964 Gun Digest, called the event "unprecedented." "As far as I know," he wrote, "this is the first time a first-line arms-maker has offered a rifle chambered for a cartridge that it - or some other production ammunition maker - cannot supply." Amber foresaw difficulties for the company but "applauded Browning's courage in taking this step." He said he had his order in for one of the first heavy-barrel models, expected in June 1963, and added, "I can hardly wait!"

Two years later in 1965 Remington Arms adopted the .22-250, added "Remington" to the name and chambered their Model 700 and 40 XB match rifles for the cartridge along with a line of commercial ammunition, thus establishing its commercial specification.

The .22-250 was the first non-Weatherby caliber offered in the unique Weatherby Mark V rifle.

Military acceptance

The cartridge was used by the Australian Special Air Service for urban counter-terrorism duties in the 1980s, in an attempt to reduce excessive penetration and ricochets.

Performance

Typical factory-loaded .22-250 Remington can propel a 55 grain (3.56 g) spitzer bullet at 3,680 ft/s (1122 m/s) with 1,654 ft·lbf (Bad rounding here J) of energy. Many other loads with lighter bullets are used to achieve velocities of over 4,000 ft/s (1,219 m/s), while still having effective energy for use in hunting small game and medium sized predators.

It is particularly popular in the western states of the USA where high winds often hinder the effectiveness of other varmint rounds in prairie dog hunting. Many states in the USA have minimum caliber restrictions limiting the use of this cartridge on larger game such as deer, although some states do allow the cartridge to be used for big game.

See also

• List of rifle cartridges
• 5 mm caliber
• Delta L problem

References

• Case Dimensions

http://www.winchester.com/Products/rifle-ammunition/super-x/power-point/Pages/X222502.aspx