| .22-250 Remington |
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| Type | Rifle |
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| Place of origin | US |
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| Designer | Grosvenor Wotkyns, J.E Gebby & J. Bushnell Smith |
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| Designed | 1937 |
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| Manufacturer | Remington |
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| Produced | 1965–present |
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| Variants | .22-250 Ackley Improved |
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| Parent case | .250-3000 Savage |
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| Case type | Rimless, bottleneck |
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| Bullet diameter | .224 in (5.7 mm) |
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| Neck diameter | .254 in (6.5 mm) |
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| Shoulder diameter | .414 in (10.5 mm) |
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| Base diameter | .470 in (11.9 mm) |
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| Rim diameter | .473 in (12.0 mm) |
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| Case length | 1.912 in (48.6 mm) |
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| Overall length | 2.35 in (60 mm) |
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| Rifling twist | 1-12, 1-14 |
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| Primer type | Large rifle |
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| Maximum pressure | 65,000 psi (450 MPa) |
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| Bullet mass/type |
Velocity |
Energy |
| 40 gr. (2.6g) BT |
4,224 ft/s (1,287 m/s) |
1,585 ft⋅lbf (2,149 J) |
| 50 gr. (3.2g) SP |
3,945 ft/s (1,202 m/s) |
1,728 ft⋅lbf (2,343 J) |
| 55 gr. (3.6g) SP |
3,786 ft/s (1,154 m/s) |
1,751 ft⋅lbf (2,374 J) |
| 60 gr. (3.9g) BT |
3,580 ft/s (1,090 m/s) |
1,708 ft⋅lbf (2,316 J) |
| 64 gr. (4.1g) Power Point |
3,500 ft/s (1,100 m/s) |
1,741 ft⋅lbf (2,360 J) |
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| Source(s): Hodgdon |
The .22-250 Remington / 5.7x48mm is a very high-velocity, short action, .22 caliber rifle cartridge primarily used for varmint hunting and small game hunting. It is capable of reaching over 4,000 feet per second. Some jurisdictions prohibit the use of cartridges smaller than 6 mm (e.g., .243 Winchester) for deer hunting. 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.
