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7mm Weatherby Magnum

Many shooters believe the 7mm Weatherby Magnum was introduced around 1944 but this is unlikely since, unlike the .220 Rocket, .270 Magnum, and .300 Magnum, the 7mm didn't start appearing in Weatherby advertisements in the "American Rifleman" until the early 1950's. Some shooters also believe the 7mm has always been one of Weatherby's most popular cartridges but this isn't true either. Roy's 7mm enjoyed only mild popularity among American hunters until Remington introduced its 7mm Magnum in 1962. But then, the same can be said of any other 7mm cartridge. The case capacities of the 7mm Weatherby and the 7mm Remington magnums are close to the same, but freebored chambers in the Mark V rifles allows the Weatherby cartridge to be loaded with slightly heavier powder charges. This, however does not apply to custom rifles with chamber throats of standard length. The freeboring of rifle chambers has long been a controversial subject. Some say higher velocities can be reached while others say its not worth the effort. The fact that the 7mm Weatherby Magnum cartridge produces about 100 fps more velocity than the 7mm Remington Magnum probably proves who is right and who is wrong. Actually, choosing between the two is more of a case of rifle preference than any practical difference in cartridge performance. 

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 7mm 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 33 loads

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Not yet verified user loads  
ID: Bullet weight: Bullet name: Powder:  
140 grs
Barnes TSX
IMR 4350
120 grs
Nosler Boattail flatnose
Reloader 19
125 grs
Winchester spire point
Reloader 19
180 grs
Hodgdon Extreme H1000
139 grs
Hornady Spire Pt
Norma MRP
154 grs
Hornady Spire Pt
Norma MRP
175 grs
Hornady Spire Pt
Norma MRP
140 grs
Nosler Partition
160 grs
Nosler Partition
175 grs
Hornady Spire Point
160 grs
Nosler Accubond
I.M.R. 4831
150 grs
nosler bt
imr 4350
139 grs
imr 4350
168 grs
Berger VLD
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