Load Specifications
Load data in caliber .350 Mag. Rigby with .358 | 200gr | Barnes TSX bullet and 43 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 60, Accurate 4064 and Vihtavuori N150.
Important Notice: DO NOT go below Minimum Charge or above Maximum Charge. Since we have no control over the equipment and components used, any responsibility and liability for the results achieved is rejected.
Only powders/loads that match the current filter criteria are displayed: max pressure of a load ≤ 90% of max. standardized pressure, fill rate ≥ 80% and propellant combustion ≥ 95%. Use the sliders above the tables to adjust these thresholds.
Charge: Powder weight in grains. Start with the minimum load and work up carefully.
FR (Fill Rate): Case fill as a percentage. Values above 100% mean compressed loads.
MaxP / %: Maximum chamber pressure in bar and as a percentage of the standardized maximum for this caliber.
V(0): Muzzle velocity in feet per second (fps) at the standardized barrel length.
z (Powder Burn): Estimated propellant combustion percentage at bullet exit.
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Max Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2495 | <<locked>> | 88% | 40,669 psi | 90% | 2677 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 40,248 psi | 90% | 2680 fps | 98.9% |
| Accurate 4064 | <<locked>> | 88% | 38,247 psi | 85% | 2657 fps | 99.3% |
| ADI AR 2206H | <<locked>> | 84% | 40,640 psi | 90% | 2680 fps | 96.2% |
| ADI Benchmark 8208 | <<locked>> | 82% | 40,379 psi | 90% | 2651 fps | 97.4% |
| Alliant AR-Comp | <<locked>> | 82% | 39,015 psi | 87% | 2664 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 40,538 psi | 90% | 2700 fps | 97.2% |
| Alliant Reloder-17 | <<locked>> | 94% | 40,538 psi | 90% | 2776 fps | 96.5% |
| Bofors RP3 | <<locked>> | 90% | 39,871 psi | 89% | 2700 fps | 97.1% |
| Hodgdon BL-C2 | <<locked>> | 82% | 38,130 psi | 85% | 2654 fps | 97.5% |
| Hodgdon H4895 | <<locked>> | 82% | 38,450 psi | 86% | 2641 fps | 96.2% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 39,117 psi | 87% | 2680 fps | 96% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 39,291 psi | 87% | 2710 fps | 96.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,156 psi | 76% | 1762 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 39,566 psi | 88% | 2648 fps | 96.4% |
| IMR 3031 | <<locked>> | 84% | 39,653 psi | 88% | 2703 fps | 99.9% |
| IMR 4895 | <<locked>> | 86% | 39,494 psi | 88% | 2690 fps | 96% |
| IMR 8208 XBR | <<locked>> | 82% | 40,379 psi | 90% | 2651 fps | 97.4% |
| Lovex D073.6 | <<locked>> | 84% | 38,870 psi | 86% | 2664 fps | 98.6% |
| Lovex S062 | <<locked>> | 88% | 40,451 psi | 90% | 2667 fps | 97.6% |
| Norma 201 | <<locked>> | 84% | 39,711 psi | 88% | 2638 fps | 97.3% |
| Norma 202 | <<locked>> | 84% | 39,827 psi | 89% | 2657 fps | 99.2% |
| Norma 203B | <<locked>> | 88% | 40,480 psi | 90% | 2703 fps | 96.2% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,360 psi | 76% | 1801 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 92% | 40,669 psi | 90% | 2795 fps | 98.8% |
| Rottweil R 902 | <<locked>> | 86% | 40,001 psi | 89% | 2638 fps | 97.4% |
| Rottweil R 903 | <<locked>> | 92% | 39,958 psi | 89% | 2694 fps | 96.8% |
| Shooters World Match Rifle | <<locked>> | 84% | 38,870 psi | 86% | 2664 fps | 98.6% |
| Shooters World Precision | <<locked>> | 88% | 40,451 psi | 90% | 2667 fps | 97.6% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 39,146 psi | 87% | 2562 fps | 99% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 38,827 psi | 86% | 2569 fps | 99.6% |
| Somchem S335 | <<locked>> | 82% | 38,464 psi | 86% | 2566 fps | 99.4% |
| Somchem S341 | <<locked>> | 84% | 40,524 psi | 90% | 2664 fps | 96% |
| Somchem S355 | <<locked>> | 90% | 38,609 psi | 86% | 2651 fps | 96.2% |
| Somchem S365ᴾ | <<locked>> | 100% | 38,087 psi | 85% | 2730 fps | 97.4% |
| Vihtavuori N133 | <<locked>> | 82% | 39,218 psi | 87% | 2569 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 39,015 psi | 87% | 2638 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 40,176 psi | 89% | 2641 fps | 99.5% |
| Vihtavuori N150 | <<locked>> | 92% | 39,465 psi | 88% | 2641 fps | 97.8% |
| Vihtavuori N530 | <<locked>> | 82% | 40,161 psi | 89% | 2641 fps | 97.5% |
| Vihtavuori N540 | <<locked>> | 86% | 38,667 psi | 86% | 2625 fps | 98.9% |
| Winchester 748 | <<locked>> | 82% | 39,015 psi | 87% | 2680 fps | 98% |
| Winchester StaBALL Match | <<locked>> | 84% | 38,290 psi | 85% | 2648 fps | 96.2% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2495 | <<locked>> | 80% | 30,937 psi | 69% | 2470 fps | 99.4% |
| Accurate 2520 | <<locked>> | 80% | 37,405 psi | 83% | 2621 fps | 98.3% |
| Accurate 4064 | 58.3 gr | 80% | 29,312 psi | 65% | 2441 fps | 96.9% |
| ADI AR 2206H | <<locked>> | 82% | 38,218 psi | 85% | 2628 fps | 95.4% |
| ADI Benchmark 8208 | <<locked>> | 80% | 37,826 psi | 84% | 2595 fps | 96.7% |
| Alliant AR-Comp | <<locked>> | 80% | 36,303 psi | 81% | 2608 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 35,636 psi | 79% | 2592 fps | 95.7% |
| Alliant Reloder-17 | <<locked>> | 92% | 38,000 psi | 85% | 2717 fps | 95.5% |
| Bofors RP3 | <<locked>> | 86% | 34,737 psi | 77% | 2585 fps | 95.5% |
| Hodgdon BL-C2 | <<locked>> | 80% | 35,694 psi | 79% | 2598 fps | 96.7% |
| Hodgdon H4895 | <<locked>> | 80% | 35,998 psi | 80% | 2585 fps | 95.3% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 36,782 psi | 82% | 2628 fps | 95.2% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 34,330 psi | 76% | 2592 fps | 95.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,266 psi | 56% | 1575 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 37,202 psi | 83% | 2595 fps | 95.6% |
| IMR 3031 | <<locked>> | 80% | 34,693 psi | 77% | 2598 fps | 99.5% |
| IMR 4895 | <<locked>> | 84% | 36,956 psi | 82% | 2635 fps | 95.1% |
| IMR 8208 XBR | <<locked>> | 80% | 37,826 psi | 84% | 2595 fps | 96.7% |
| Lovex D073.6 | <<locked>> | 80% | 33,692 psi | 75% | 2546 fps | 97.3% |
| Lovex S062 | <<locked>> | 82% | 33,446 psi | 74% | 2510 fps | 95.4% |
| Norma 201 | <<locked>> | 80% | 34,896 psi | 78% | 2530 fps | 95.9% |
| Norma 202 | <<locked>> | 80% | 34,940 psi | 78% | 2549 fps | 98.3% |
| Norma 203B | <<locked>> | 86% | 37,898 psi | 84% | 2644 fps | 95.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,396 psi | 56% | 1611 fps | 100% |
| ReloadSwiss RS 60 | 65.6 gr | 84% | 31,024 psi | 69% | 2543 fps | 95.1% |
| Rottweil R 902 | <<locked>> | 80% | 33,083 psi | 74% | 2477 fps | 95.1% |
| Rottweil R 903 | <<locked>> | 88% | 34,809 psi | 77% | 2579 fps | 95.1% |
| Shooters World Match Rifle | <<locked>> | 80% | 33,692 psi | 75% | 2546 fps | 97.3% |
| Shooters World Precision | <<locked>> | 82% | 33,446 psi | 74% | 2510 fps | 95.4% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 36,753 psi | 82% | 2513 fps | 98.6% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 29,921 psi | 67% | 2369 fps | 97.8% |
| Somchem S335 | <<locked>> | 80% | 36,187 psi | 80% | 2516 fps | 99.1% |
| Somchem S341 | <<locked>> | 82% | 37,811 psi | 84% | 2605 fps | 95.1% |
| Somchem S355 | <<locked>> | 88% | 36,114 psi | 80% | 2595 fps | 95.3% |
| Somchem S365 | <<locked>> | 96% | 33,388 psi | 74% | 2612 fps | 95.5% |
| Vihtavuori N133 | <<locked>> | 80% | 36,825 psi | 82% | 2520 fps | 99.9% |
| Vihtavuori N135 | <<locked>> | 80% | 31,865 psi | 71% | 2484 fps | 99.5% |
| Vihtavuori N140 | <<locked>> | 80% | 32,996 psi | 73% | 2484 fps | 98.1% |
| Vihtavuori N150 | 63.3 gr | 86% | 32,155 psi | 72% | 2477 fps | 95.5% |
| Vihtavuori N530 | <<locked>> | 80% | 37,565 psi | 84% | 2585 fps | 96.7% |
| Vihtavuori N540 | <<locked>> | 80% | 31,734 psi | 71% | 2467 fps | 97.2% |
| Winchester 748 | <<locked>> | 80% | 36,463 psi | 81% | 2625 fps | 97.3% |
| Winchester StaBALL Match | <<locked>> | 82% | 35,810 psi | 80% | 2592 fps | 95.3% |
Recommended = one of the top powders for this cartridge and bullet combination.
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 43 powders for .350 Mag. Rigby loaded with the .358 | 200gr | Barnes TSX. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,795 fps; across all powders the maximum-charge window runs from 1,762 fps to 2,795 fps. Hodgdon Hybrid 100V gives the best case fill at 100 %, and 43 of the 43 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (310 MPa), the top charges use 76–90 %, leaving at least 10 % headroom. The 200.0 gr projectile in 0.358" calls for a 1:6.0 twist; slower twists will usually not stabilise this weight. Hodgdon Hybrid 100V, Hodgdon TrailBoss, ReloadSwiss RS 14 reach 100 % fill or more at maximum charge, so these are compressed loads: they need a long drop tube to seat cleanly and react sensitively to the case capacity of your own brass lot. ReloadSwiss RS 60, Accurate 4064, Vihtavuori N150 rank at the top here: for .350 Mag. Rigby with the .358 | 200gr | Barnes TSX they combine a high case fill with complete burn and sit in the upper velocity band. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.