Load data for .444 Marlin + 300gr Hornady XTP
The most recommended powders for this combination are Vihtavuori N120.
Based on C.I.P., the max. allowed case length is 2.225 in / 56.52 mm, the max. cartridge length is 2.570 in / 65.28 mm, and the max. allowed pressure is 51,488 PSI / 3,550 bar.

Based on C.I.P., the max. allowed case length is 2.225 in / 56.52 mm, the max. cartridge length is 2.570 in / 65.28 mm, and the max. allowed pressure is 51,488 PSI / 3,550 bar.

Load Specifications
ImperialMetric
Bullet:.430 | 300gr | XTP
Cartridge:.444 Marlin load data
Case Length (L3):2.225" | 56.5 mm
Cartridge Length (COL/L6):•••
Seated Depth:0.543" | 13.8 mm
Case Capacity:68 gow | 4.41 cm³
Primer Size:Large Rifle (LR)
Max. Pressure (C.I.P.):51,488 psi | 3,550 bar
Barrel Length:24.0" | 610 mm
Min. Twist Rate:Stabilizes in any common twist
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Community Loads for .444 Marlin + 300gr Hornady XTP
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) |
|---|---|---|---|---|---|
| 45.9 gr | 2.530" | 24.0" | 1758 fps | ••• | |
| 51.0 gr | 2.530" | 24.0" | 1968 fps | ••• | |
| 45.0 gr | 2.530" | 24.0" | 1808 fps | ••• | |
| ••• | 2.530" | 24.0" | 2014 fps | ••• | |
| ••• | 2.539" | 23.6" | 1967 fps | ••• | |
| ••• | 2.570" | 22.0" | 2060 fps | ••• | |
| ••• | 2.570" | 22.0" | 2139 fps | ••• | |
Charge weights beyond the first rows and all pressure values are only visible with an active Pro licence.