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.375 Winchester

With few exceptions, time has not been kind to big game cartridges designed for close to medium range shooting. The .375 Winchester is a good example of an excellent cartridge allowed to die. It was introduced in the Winchester Model 94 in 1978 and later available in the Marlin Model 336, Savage Model 99, and Ruger No. 3 rifles. In spite of its failure to win many friends among those multitudes who hunt deer, black bear, and wild hogs, the .375 Winchester is an excellent woods cartridge. But then so is the .35 Remington, a cartridge of similar performance with a seventy year head start on Winchester's .375 cartridge. It might be of interest to note that along with the .375, Olin also developed a .40 caliber cartridge on the .30-30 case. Had the .375 become successful, we might now have a Model 94 in .400 Winchester, but since it didn't we probably seen our last new woods cartridge from Winchester. As this is written, only three .375 caliber bullets suitable for use in rifles with tubular magazines are available; the 200 grain Sierra, and 220 grain Hornady, and the 250 grain Barnes, all of flatnose form. Cast bullets up to 250 grains also work quite well in this cartridge. A number of powders do a good job here, including H335, IMR-3031, W-748, and Reloader 7. 

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 .375 Winchester 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 15 loads

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Bullet weight: Bullet name: Powder:  

Not yet verified user loads  
ID: Bullet weight: Bullet name: Powder:  
220 grs
AA 1680
225 grs
Hornady SP 3706
220 grs
Horn Flat Point
Reloader 7
220 grs
Taipan FN
220 grs
Hornady flat point
254 grs
flat base flat nose cast
220 grs
255 grs
Barnes Original
Alliant Reloader 7
255 grs
Barnes Original
Alliant Reloader 7
260 grs
Hunter's Supply added Gas Check
260 grs
260 Hunters Supply with Gas Check
260 grs
260 Hunters Supply with Gas Check
260 grs
cast hunters supply and gas check
Blue Dot
220 grs
.375 220 GRFP hornday #3705
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