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10.3x60R mm Swiss

A Swiss target cartridge originally for single-shot, Martini-action rifles. The 10,3x60R is identical to the obsolete British 450/400 (2 3/8-inch) black-powder Express. This cartridge is in the same class as the 405 Winchester and would do for any North American big game at short to medium range. This cartridge is still popular in Switzerland and guns and ammunition are still manufactured in Switzerland and in Germany by RWS. 

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 10.3x60R mm Swiss 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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Not yet verified user loads  
ID: Bullet weight: Bullet name: Powder:  
215 grs
AERO SB 414-215
IMR 3031
254 grs
0.413 Gian-MarchetŪ "Original"
Rottweil R902
200 grs
.413 Impala
Rottweil 902
300 grs
Hornady SP (.411)
Rottweil R903
250 grs
lead Round nose - used for .44 magnum-
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