Load data for .300 PRC + 165gr Hornady SST InterLock
The most recommended powders for this combination are Norma MRP, Vihtavuori N560 and ADI AR 2213.
Based on SAAMI, the max. allowed case length is 2.580 in / 65.53 mm, the max. cartridge length is 3.700 in / 93.98 mm, and the max. allowed pressure is 65,000 PSI / 4,482 bar.

Based on SAAMI, the max. allowed case length is 2.580 in / 65.53 mm, the max. cartridge length is 3.700 in / 93.98 mm, and the max. allowed pressure is 65,000 PSI / 4,482 bar.

Load Specifications
ImperialMetric
Bullet:.308 | 165gr | SST InterLock
Cartridge:.300 PRC load data
Case Length (L3):2.580" | 65.5 mm
Cartridge Length (COL/L6):•••
Seated Depth:0.402" | 10.2 mm
Case Capacity:99 gow | 6.42 cm³
Primer Size:Large Rifle Magnum (LRM)
Max. Pressure (SAAMI):65,000 psi | 4,482 bar
Barrel Length:24.0" | 610 mm
Min. Twist Rate:1:12.5
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Community Loads for .300 PRC + 165gr Hornady SST 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) |
|---|---|---|---|---|---|
| 73.8 gr | 3.465" | 26.0" | 3031 fps | ••• | |
| 73.3 gr | 3.465" | 26.0" | 2720 fps | ••• | |
| 81.0 gr | 3.465" | 26.0" | 2984 fps | ••• | |
| ••• | 3.465" | 26.0" | 2909 fps | ••• | |
| ••• | 3.465" | 26.0" | 2741 fps | ••• | |
| ••• | 3.465" | 26.0" | 2952 fps | ••• | |
Charge weights beyond the first rows and all pressure values are only visible with an active Pro licence.