.17 HMR
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.17 Hornady Magnum Rimfire, commonly known as the .17 HMR, is a rimfire rifle cartridge developed by Hornady[3] in 2002. It was developed by necking down a .22 Winchester Magnum Rimfire case to take a .17 caliber (4.5mm) projectile. Commonly loaded with a 17 grain (1.1 g) projectile, it can deliver muzzle velocities in excess of 775 m/s (2,650 ft/s).[4]
Quick Facts Type, Place of origin ...
.17 HMR | ||||||||||||
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Type | Rifle | |||||||||||
Place of origin | United States | |||||||||||
Production history | ||||||||||||
Designer | Hornady | |||||||||||
Designed | 2002 | |||||||||||
Manufacturer | CCI, Federal, Hornady, PMC,[1] Remington, Winchester | |||||||||||
Produced | 2002–present | |||||||||||
Specifications | ||||||||||||
Parent case | .22 WMR | |||||||||||
Case type | Rimmed, bottleneck | |||||||||||
Bullet diameter | .172 in (4.4 mm) | |||||||||||
Land diameter | .168 in (4.3 mm) | |||||||||||
Neck diameter | .190 in (4.8 mm) | |||||||||||
Shoulder diameter | .238 in (6.0 mm) | |||||||||||
Base diameter | .238 in (6.0 mm) | |||||||||||
Rim diameter | .286 in (7.3 mm) | |||||||||||
Rim thickness | .05 in (1.3 mm) | |||||||||||
Case length | 1.058 in (26.9 mm) | |||||||||||
Overall length | 1.349 in (34.3 mm) | |||||||||||
Primer type | Rimfire | |||||||||||
Maximum pressure | 26,000 psi (180 MPa) | |||||||||||
Ballistic performance | ||||||||||||
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Source(s): Hornady[2] |
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