.17 Winchester Super Magnum
17 Winchester Super Magnum | ||||||||||||
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![]() .17 WSM (left), with .17 Hornet (center) and .22 Hornet (right) | ||||||||||||
Type | Rifle | |||||||||||
Place of origin | United States | |||||||||||
Production history | ||||||||||||
Designer | Winchester | |||||||||||
Designed | 2012 | |||||||||||
Produced | 2013–present | |||||||||||
Specifications | ||||||||||||
Parent case | .27 caliber nail gun blank cartridge | |||||||||||
Case type | Rimmed, bottleneck | |||||||||||
Bullet diameter | .172 in (4.4 mm) | |||||||||||
Neck diameter | .197 in (5.0 mm) | |||||||||||
Shoulder diameter | .269 in (6.8 mm) | |||||||||||
Base diameter | .269 in (6.8 mm) | |||||||||||
Rim diameter | .333 in (8.5 mm) | |||||||||||
Rim thickness | .066 in (1.7 mm) | |||||||||||
Case length | 1.200 in (30.5 mm) | |||||||||||
Overall length | 1.440 in (36.58 mm) to 1.590 in (40.39 mm)[1] | |||||||||||
Primer type | Rimfire | |||||||||||
Maximum pressure | 33,000 psi (230 MPa) | |||||||||||
Ballistic performance | ||||||||||||
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.17 Winchester Super Magnum, commonly known as the .17 WSM, is a rimfire rifle cartridge developed by the ammunition company Winchester in 2012. It descended from a .27 caliber nail-gun blank cartridge by necking down the blank case to take a .17 caliber (4.5mm) bullet. Initial loadings were with a 20 grains (1.3 g) bullet, delivering muzzle velocities around 3,000-foot-per-second (910 m/s).[2]
Development
[edit]Winchester, in conjunction with Savage, introduced this cartridge at the 2013 SHOT Show. [3]
The brass case for this round is roughly 50% thicker than the 17 HMR, and the max average internal pressure is 33,000 psi, compared to the 17 HMR's 26,000 psi. [4] The 17 WSM is not compatible with firearms chambered in 17 HMR and vice versa as the two cartridges have different dimensions.
Factory ammunition
[edit]Factory ammunition is available from Winchester, Federal, American Eagle. Federal Ammunition American Eagle 17 Win. Super Magnum cartridges are currently only available with 1.3 gram (20 grain) polymer-tipped projectiles rated at 914 m/s (3,000 fps) at the muzzle.
Several options from Winchester are available, including Varmint HV 17 Winchester Super Magnum with a 1.3 gram (20 grain) polymer-tipped projectile rated at 914 m/s (3,000 fps), Varmint HE 17 Winchester Super Magnum with a 1.6 gram (25 grain) polymer-tipped projectile rated at 793 m/s (2,600 fps), and Varmint-X 17 Winchester Super Magnum which is available with a lead-free 1 gram (15 grain) polymer tipped projectile, rated at 1,006 m/s (3,300 fps).
Firearms
[edit]Currently, rifles firing the 17 WSM are the Savage B-Mag bolt action, heavy barrel B-mag target edition. Ruger Model 77/17, Winchester 1885 Low Wall single shot, and the semi-automatic Franklin Armory F-17.[5] The F-17 is the first gas-piston operated rimfire firearm designed to handle the higher pressures of this cartridge. Also recently Jard Inc. joined this list with their J71 17 WSM AR 15 rifle. [6]
See also
[edit]References
[edit]- ^ "American National Standard Voluntary Industry Performance Standards for Pressure and Velocity of Rimfire Sporting Ammunition for the Use of Commercial Manufacturers" (PDF). Archived from the original (PDF) on 2017-02-02. Retrieved 2017-01-25.
- ^ "The 17 Winchester Super Magnum". Archived from the original on 2013-01-28. Retrieved 2013-01-23.
- ^ "Savage .17 Winchester Super Magnum Rimfire Rifle – SHOT Show 2013". 18 January 2013. Archived from the original on 2013-01-22. Retrieved 2013-01-23.
- ^ "World's Fastest Rimfire Round: Winchester .17 Super Magnum". 17 January 2013. Archived from the original on 2013-01-23. Retrieved 2013-01-23.
- ^ "Franklin Armory". franklinarmory.com. Archived from the original on 2021-09-15. Retrieved 2021-10-23.
- ^ "First Ever Functional Gas Operated Rimfire from Franklin Armory". 16 January 2014. Archived from the original on 2014-01-20. Retrieved 2014-01-21.