By far the most popular and versatile Weatherby cartridge available. The 300 Weatherby Magnum has the flattest trajectory longest range and the greatest killing power of any 300 magnum on the market until the 30-378 Weatherby Magnum came along. Based on the 300 H&H Magnum the 300 Weatherby delivers 300 more fps than its British cousin. Introduced in 1944 this is the all-around cartridge for the big game hunter.Weatherby Select 300 Weatherby Magnum 165 Grain Interlock SP20 Rounds Per Box200 Rounds Per CaseNewly-Made Reloadable BrassThe 165-grain Interlock soft point makes this cartridge useful for big game hunters by providing a great combination of penetration and expansion. Order your 300 Weatherby Magnum ammo online today!Need some cleaning supplies for your firearms? Click here!Need a new scope for your rifle? Click here!