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.340 Weatherby Magnum

The .340 Magnum uses .338" bullets, same as the .338 Magnum, and it is Roy's fifth most popular cartridge; the .300, .270, 7mm, and .257 Magnums are ahead in popularity by a considerable margin. The Weatherby Mark V is the only factory rifle available in .340 Magnum, but a number of custom rifles are built in this caliber around the Remington Model 700 and Winchester Model 70 actions. When loaded with the right bullet, the .340 Weatherby Magnum is suitable for hunting any of the worlds big game. This includes elephant and cape buffalo (where the caliber is legal) when the .340 is loaded with bullets of full metal jacket construction. For all thin skinned game the handloader can do a lot worse than load H4831behind a Nosler250 grain Partition. An excellent long range elk and moose load for the .340 is the Nosler210 grain Partition or the Sierra250 grain spitzer pushed to maximum velocity by H4831, H450, IMR-4831, or IMR-7828. 

This text is based on information from “Cartridges of the World”, Hodgdon reloading manual, the cartridge designer and/or own resources.

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There is no printed reloading manual created for this caliber. There will be created a Wire-O booklet of all calibers with at least 60 loads present.
Click here to see in which calibers this reloading manual is available.


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With a subscription you can download all loads in .340 Weatherby Magnum as a PDF load manual. On top of that you will also get unlimited access to downloadable PDF manuals in several hudred calibers.


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reloadersnest Complete Reloading Manual
The Complete Reloading Manual is a compilation based on all rifle calibers with at least one load from this site.
The book contains 311 calibers and 9557 loads. 549 pages in 8x5 inch Perfect-Bound binding.
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Show all 39 loads

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Bullet weight: Bullet name: Powder:  

Not yet verified user loads  
ID: Bullet weight: Bullet name: Powder:  
275 grs
IMR 4831
180 grs
nosler accubond/ ballistic tip
AR 2209
225 grs
Barnes TSX
Reloader 22
225 grs
barnes TTSX
Reloader 22
225 grs
Hornady SST
Hodgdon H4831SC
200 grs
Hornady Spire Point
225 grs
nosler partition
Alliant Reloader-22
225 grs
Nosler Partition
225 grs
Nosler Partition
Alliant Reloader 19
200 grs
Hornady Spire Pt
Norma MRP
210 grs
Nosler Partition
Norma MRP
250 grs
Hornady RN
Norma MRP
250 grs
Nosler partition
200 grs
Nosler E-tip
Relodaer 22
250 grs
Hornady SP
RL 22
185 grs
225 grs
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