Load data for .300 Rem. Ultra Mag. + 200gr Barnes LRX BT
Based on C.I.P., the max. allowed case length is 2.850 in / 72.39 mm, the max. cartridge length is 3.600 in / 91.44 mm, and the max. allowed pressure is 64,977 PSI / 4,480 bar.

Based on C.I.P., the max. allowed case length is 2.850 in / 72.39 mm, the max. cartridge length is 3.600 in / 91.44 mm, and the max. allowed pressure is 64,977 PSI / 4,480 bar.

Load Specifications
ImperialMetric
Bullet:.308 | 200gr | LRX BT
Cartridge:.300 Rem. Ultra Mag. load data
Case Length (L3):2.850" | 72.4 mm
Cartridge Length (COL/L6):•••
Seated Depth:0.866" | 22.0 mm
Case Capacity:112.5 gow | 7.29 cm³
Primer Size:Large Rifle Magnum (LRM)
Max. Pressure (C.I.P.):64,977 psi | 4,480 bar
Barrel Length:24.0" | 610 mm
Min. Twist Rate:1:10.0
Get PRO license to unlock all data and calculators
Community Loads for .300 Rem. Ultra Mag. + 200gr Barnes LRX BT
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) |
|---|---|---|---|---|---|
| 78.5 gr | 3.600" | 24.0" | 2704 fps | ••• | |
| 79.0 gr | 3.600" | 24.0" | 2637 fps | ••• | |
| 88.0 gr | 3.600" | 24.0" | 2888 fps | ••• | |
| ••• | 3.600" | 24.0" | 2646 fps | ••• | |
| ••• | 3.600" | 24.0" | 2894 fps | ••• | |
| ••• | 3.600" | 24.0" | 2574 fps | ••• | |
| ••• | 3.600" | 24.0" | 2828 fps | ••• | |
| ••• | 3.600" | 24.0" | 2632 fps | ••• | |
| ••• | 3.600" | 24.0" | 2890 fps | ••• | |
| ••• | 3.600" | 24.0" | 2692 fps | ••• | |
| ••• | 3.600" | 24.0" | 2853 fps | ••• | |
| ••• | 3.600" | 24.0" | 2576 fps | ••• | |
| ••• | 3.600" | 24.0" | 2829 fps | ••• | |
| ••• | 3.600" | 24.0" | 2822 fps | ••• | |
Charge weights beyond the first rows and all pressure values are only visible with an active Pro licence.