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.17WSM Rimfire Cartridge
Rimfire cartridges contain the priming compound in the rim of the cartridge, the cartridge case itself contains the gunpowder.
Written by: Kim Lockhart, Copyright.

Actual Picture Of 17 Winchester Super Magnum Cartridge17 Winchester Super Magnum: (.17WSM)
 The .17 Winchester Super Magnum is a .17" caliber rimfire cartridge developed by Winchester and introduced to the public in 2013. The brass cartridge case for this round is thicker and stronger than the .17 HMR, this allows for higher chamber pressures like the older 5mm Remington Rimfire Magnum operating at 33,000 PSI as opposed to the .17 HMR at 26,000 PSI., therefore increasing 20 grain bullet velocity to 3,000 feet per second. The .17 Winchester Super Magnum offers excellent downrange performance at ranges well past 200 yards and the first rimfire cartridge to make the 3,000 feet per second velocity range in a cheaper to shoot rimfire cartridge. The .17 Winchester Super Magnum down-range high performance level well excedes the long-range wind drift and bullet-drop capabilities of popular magnum rimfire cartridges like the .22WMR, 5mmRRM and .17HMR, while delivering more on-target bullet energy.
Cartridge case length is 1.200".

Rimfire Cartridges:
.17 HM2
.17 HMR
.17 WSM
5mm Rem. Mag.
.22 BB Cap
.22 CB Cap
.22 Short
.22 Long
.22 Long Rifle
.22 WRF
.22 WMR
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Rifle Cartridges And Reloading - Rifle Cartridges And Ballistics