Load data for .327 Federal Mag. + 78gr Rim Rock RN Cowboy
303 suitable loads across 54 powder(s) for cartridge .327 Federal Mag. with 78gr Rim Rock RN Cowboy bullet.
The most recommended powders for this combination are Vihtavuori 3N37, Alliant UNIQUE and SNPE Vectan BA7 1/2.
Based on SAAMI, the max. allowed case length is 1.200 in / 30.48 mm, the max. cartridge length is 1.475 in / 37.47 mm, and the max. allowed pressure is 44,999 PSI / 3,103 bar.
Based on SAAMI, the max. allowed case length is 1.200 in / 30.48 mm, the max. cartridge length is 1.475 in / 37.47 mm, and the max. allowed pressure is 44,999 PSI / 3,103 bar.
Load Specifications
ImperialMetric
Bullet:.313 | 78gr | RN Cowboy
Cartridge:.327 Federal Mag. load data
Case Length (L3):1.180" | 30.0 mm
Cartridge Length (COL/L6):•••
Seated Depth:0.198" | 5.0 mm
Case Capacity:19 gow | 1.23 cm³
Primer Size:Small Pistol (SP)
Max. Pressure (SAAMI):44,999 psi | 3,103 bar
Barrel Length:4.0" | 102 mm
Min. Twist Rate:Stabilizes in any common twist
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