340 Weatherby Magnum

(6 customer reviews)


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.

SKU: 340 Category: Tag:


Ammunition Shipment Restrictions

Must be 18 or older to purchase rifle ammunition. Shipping not available to P.O. Boxes, International Addresses, AK, CA, HI, MA, CT, IL, NJ, NY nor DC residents. Residents of DE, KS, OH, and WA may have additional restrictions. All ammunition is shipped domestic ground and an adult signature is required. We do not accept returns on ammunition.

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.

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6 reviews for 340 Weatherby Magnum

  1. Paul Kruger

    If I could only own one hunting rifle, it would be a MKV chambered in 340 Wby. My sons and I have shot deer, elk and moose with mine (a Japan manufactured MKV). I handload the Hornady 200gr spire point for open country deer elk and the Hornady 250 RN for heavier game in wooded areas or at shorter ranges. The point of impact is only 1″ left for the 250’s from where I sight the 200gr bullets in at (huge bonus), so I can carry a few RN’s with me should the need arise for a heavier bullet. Fired from the 340, even at ranges out to 400 yards the 200’s work well on broadside deer shots. The 250’s work well on moose, on a broadside shot they leave about a 6″ diameter hole in the lungs and the animal may run 25 yards at most. What a great cartridge, brass life is great, it is incredibly confidence inspiring, with zero concerns that it is not up to doing what it was designed to do when you pull the trigger! When I am looking for larger bucks here in Alberta I usually carrying my 340, although I could say a lot of good things about my 270Wby also.

  2. Greg Lewis

    From big hogs in California to bears in AK. The 340 has knocked them all down with ease. 225 X bullets are great in this caliber. It does have a bit of a kick.

  3. Junior

    To much of a good thing you bet, using 225 grain Barnes triple shock bullets on buffalo, elk, deer and African plains game I have never had a cripple or had to use a second shot

  4. Hell’s Canyon

    I was shooting at a steep downward angle and the bull was 413 yards away. He was facing towards me at slight angle I held at the base of his neck and shoulder. At the shot the bull tumbled down hill about 75 yds. I recovered the bullet intact just under the skin on the left ham it almost went completely through him from one end to the other. That was the 17th elk I have taken with my .340 I have always used 225 grain loading Outstanding

  5. ranger4

    I have used my 340 Weatherby for Elk hunting for 25 years, and it performs
    superbly at all distances. I use handloads with a 210 gr. Nosler partition bullet
    and 90 grs. of H4831 powder. Needless to say, it packs a lethal punch on
    all North American game.

  6. Todd K

    When choosing a rifle and ammunition for the task the 340 Weatherby made the choice easy. Loaded with 250 grain nosler partition even the big boys drop like lightning hit them between the horns. Phenomenal performance on plains game. African animals are tough and the 340 Weatherby delivers performance at extended range.

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