.17 Winchester Super Magnum: 3,000 FPS Rimfire

.17 WSM

Well the new rimfire cartridge is here and it is a smoking hot round:  the .17 Winchester Super Magnum.  The new rimfire promises “pinpoint accuracy” and the “downrange performance of a centerfire cartridge.”

Ok, let’s cut to the chase:  the new Winchester cartridge is pushing a 20 grain bullet at 3,000 fps.  That is an amazing feat for a rimfire.  Energy measures right at 400 ft-lbs (399.6 if my math is correct.)  A 25 grain bullet screams along at 2,600 fps for 375 ft-lbs of energy.