375 Ruger Light Loads

Handload Data

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 be excessive in others. All loads should be reduced by 5% as a starting point for development where cartridges have greater than 40 grains in capacity and 10% for cartridges with less than 40 grain capacity following safe handloading practices as represented in established mainstream reloading manuals. Presentation of these loads does not constitute a solicitation for their use, nor a recommendation.

Cartridge
375 Ruger
Firearm Ruger Guide Gun
Barrel Length 20″
Min – Max Case Length 2.580″ +0.000″/-0.020″
Min – Max Cartridge Overall Length 3.280″ – 3.340″
Primer
LRM
Bullet Diameter 0.3760 +0.000″/-0.003″
Reloading Dies Hornady FL
Bullet Type  Bullet Weight
Grains
Net H2O
Grains
Capacity
COL” Powder Type Powder Charge
Grains
Muzzle Velocity
fps
Muzzle Energy
ft/lbs
Sierra Pro-Hunter
200 90.5 3.100 IMR Trail Boss 27.0 1762 1379
Sierra Pro-Hunter 200 90.5 3.100 IMR 3031 52.0 2146 2046
Sierra Pro-Hunter
200 90.5 3.100 Reloder 10 50.0 2227 2203
Sierra Pro-Hunter
200 90.5 3.100 IMR 4198 46.0 2205 2160
Hornady SP
225 87.7 3.275 IMR Trail Boss
27.0
1626
1321
Hornady SP
225 87.7 3.275 IMR 3031 52.0 1948 1896
Hornady SP
225 87.7 3.275 Reloder10 51.0 2117 2240
Hornady SP
225 87.7 3.275 IMR 4198 47.0 2243 2514
Speer SP
235 89.3 3.275 IMR Trail Boss
27.0
1661
1440
Speer SP
235 89.3 3.275 IMR 3031 55.0 2130 2368
Speer SP
235 89.3 3.275 Reloder10 52.0 2182 2385
Speer SP
235 89.3 3.275 IMR 4198 48.0 2271 2692

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