7x57 Mauser

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Warning: Bullet selections are specific, and loads are not valid with substitutions of different bullets of the same weight. Variations in bullet length will alter net case capacity,  pressure and velocity. Primer selection is specific and primer types are not interchangeable. These are maximum loads in my firearms and may easily be excessive in others. All loads should be reduced by 5%,  and developed following safe handloading practices as represented in established reloading manuals produced by component manufacturers. Presentation of these loads does not constitute a solicitation for their use, nor a recommendation.

Cartridge: 7x57mm – Ruger No.1 Only
 Rifle: Ruger No.1  Max COL: 3.065″*
 Bullet Diameter: 0.284″  Primer: CCI 200
 Barrel: 20″  Reloading Dies: Lee Precision
 Max case length: 2.235″  3 Shot Group Distance: 100 Yards

*Some loads listed exceed COL and require checking for clearance

Bullet Bullet Weight
Grains		 Net Water Capacity
H2O		 COL”   Powder Type Powder Charge
Grains		 Muzzle Velocity
FPS		 Muzzle Energy
Ft-Lbs		 100 Yards
Group Size
3 Shot “
Sierra ProHunter 120 54.9 2.935 Re17 52.5 3107 2573 1.1
Sierra ProHunter 120 54.9 2.935 H414 54.0 3154 2651 1.2
Hornady SST 139 51.6 3.000 H414 50.0 2933 2656 1.0
Hornady SST 139 51.6 3.000 IMR4895 45.0 2787 2398 0.7
Berger VLD Hunting 140 52.2 3.010 Re17 49.0 2845 2517 1.1
Berger VLD Hunting 140 52.2 3.010 H414 50.5 2965 2734 0.9
Berger VLD Hunting 168 52.3 3.170 Re19 50.5 2662 2644 1.1
Berger VLD Hunting 168 52.3 3.170 H414 48.5 2730 2781 1.0

Comments appearing below are posted by individuals in a free exchange, not associated with Real Guns. Therefore RGI Media takes no responsibility for information appearing in the comments section. Reader judgement is essential.

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