Weatherby Select Hornady Interlock Rifle Ammunition .340 Wby MAG 250GR 2963 FPS 20/Ct

Introduced in 1963 the 340 Weatherby was designed as a response to the 338 Winchester Mag. However Roy took advantage of the longer case to pack in more powder for greater velocity. And it shoots heavier 338 bullets at higher velocities as well – a decidedly powerful combination. Ideally suited for animals the size of elk or larger the 340 can also be used by deer hunters with lighter bullet weights.