Load data for .303 British + 150gr Hornady SP interlock
The most recommended powders for this combination are IMR 4064.
Based on C.I.P., the max. allowed case length is 2.222 in / 56.44 mm, the max. cartridge length is 3.075 in / 78.11 mm, and the max. allowed pressure is 52,939 PSI / 3,650 bar.
Based on C.I.P., the max. allowed case length is 2.222 in / 56.44 mm, the max. cartridge length is 3.075 in / 78.11 mm, and the max. allowed pressure is 52,939 PSI / 3,650 bar.
Load Specifications
ImperialMetric
Bullet:.312 | 150gr | SP interlock
Cartridge:.303 British load data
Case Length (L3):2.213" | 56.2 mm
Cartridge Length (COL/L6):•••
Seated Depth:0.312" | 7.9 mm
Case Capacity:56 gow | 3.63 cm³
Primer Size:Large Rifle (LR)
Max. Pressure (C.I.P.):52,939 psi | 3,650 bar
Barrel Length:25.0" | 635 mm
Min. Twist Rate:1:15.0
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Community Loads for .303 British + 150gr Hornady SP interlock
Real loads for this combination shared by our community. Charge weights are only fully visible with an active Pro licence.
| Powder | Charge (gr) | C.O.L. | Barrel Length | Velocity (fps) | Pressure (psi) |
|---|---|---|---|---|---|
| 43.5 gr | 3.075" | 25.2" | 2638 fps | ••• | |
| 40.0 gr | 3.075" | 25.2" | 2464 fps | ••• | |
Charge weights beyond the first rows and all pressure values are only visible with an active Pro licence.