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.257 Roberts
 
 

The commercial version of the 257 Roberts was released by Remington in 1934 chambered in their Model 30 bolt action rifle. The original cartridge was designed by H. H. Roberts (a well know experimenter and gun writer during the 1920's and 30's) and is based on the 7 x 57 Mauser necked down. Remington changed the Roberts shoulder angle from 15 degrees to 20 degrees. The name of the cartridge was adopted to honor its original developer. The 257 Roberts has often been referred to as the "most useful rifle cartridge ever developed". That is not very far wrong. It is suitable for a wide range of hunting under a variety of conditions. As a long range varmint cartridge, it is as good as they come, being only slightly inferior to the newer 6mm's. On deer, antelope, black bear, sheep or goat it is as good as any other cartridge available. Naturally, it is not as powerful as the 270 Winchester or 30-06 Springfield but has ample power for the game mentioned at all practical ranges. 

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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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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ID: Bullet weight: Bullet name: Powder:  
100 grs
Barnes X
IMR 4831
110 grs
Accubond
VV N140
110 grs
Nosler AccuBond
IMR 4350
100 grs
Sierra
IMR 7828
110 grs
Nosler Accubond
IMR 4350
87 grs
unspecified
H4895
110 grs
Accubond
VV N 150
120 grs
nosler partition
hodgdon hybrid 100
80 grs
barnes tsx
r19
90 grs
Siera Game King HPBT
IMR 4064
100 grs
Nosler Partition
H380
100 grs
sierra gameking spitzer
IMR 4350
95 grs
Berger SFB
AA4350
95 grs
Berger SFB
AA4350
110 grs
Nosler Accubond
IMR 4350
115 grs
Nosler Ballistic Tip
Hodgdon Hybrid 100V
60 grs
Hornady
Varget
 
   
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