http://www.thefirearmblog.com/blog/2013/01/04/winchester-introduces-3000-fps-rimfire-cartridge/
Wonder if it will have enough pressure for a direct impingement system to overcome where the 17hmr has not been able to function in semi autos.
Also wondering if my Sparrow would be rated for it.
The most interesting thing about the .17WSM may be the casing it uses, which doesnât come from a firearm at all. Winchester manufactures .27 caliber rimfire casings already for use in powered fasteners (what we rednecks call ânail gunsâ). What effect this will have on the cost of the new cartridge is unknown, but the pundits are agreed that any new rimfire caliber needs to be affordable or its chances of success are slim.
Two flavors have been announced so far; a 20-grain bullet reaching 3,000 feet per second, and a 25-grain bullet traveling at 2,600 feet per second. Muzzle energy on the 20-grain loading is rated at 400 foot pounds, with the slower 25-grain loading measuring 375 foot pounds.
Wonder if it will have enough pressure for a direct impingement system to overcome where the 17hmr has not been able to function in semi autos.
Also wondering if my Sparrow would be rated for it.