Load Specifications
Load data in caliber .300 Weath. Mag. with .308 | 201gr | RWS Kegelspitz bullet and 74 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Winchester StaBALL HD, Vihtavuori N560 and Norma MRP.
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 3100 | <<locked>> | 94% | 56,159 psi | 88% | 2762 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 57,508 psi | 90% | 2789 fps | 100% |
| Accurate MAGPRO | <<locked>> | 92% | 54,694 psi | 86% | 2854 fps | 98.1% |
| ADI AR 2209 | <<locked>> | 90% | 54,607 psi | 86% | 2795 fps | 99.5% |
| ADI AR 2213 | <<locked>> | 94% | 55,825 psi | 87% | 2854 fps | 99% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 50,154 psi | 79% | 2759 fps | 98.5% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 44,701 psi | 70% | 2720 fps | 99.7% |
| Alliant Reloder-16 | <<locked>> | 86% | 54,781 psi | 86% | 2792 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 82% | 55,666 psi | 87% | 2802 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 92% | 57,696 psi | 90% | 2838 fps | 99.7% |
| Alliant Reloder-22 | <<locked>> | 94% | 55,912 psi | 88% | 2848 fps | 99.7% |
| Alliant Reloder-23 | <<locked>> | 96% | 57,159 psi | 90% | 2818 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 56,434 psi | 88% | 2881 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 90% | 53,664 psi | 84% | 2851 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 96% | 57,537 psi | 90% | 2818 fps | 96.9% |
| Bofors RP15 | <<locked>> | 96% | 55,085 psi | 86% | 2835 fps | 99.6% |
| Bofors RP30ᴾ | <<locked>> | 100% | 52,591 psi | 82% | 2828 fps | 99% |
| Bofors RP5 | <<locked>> | 94% | 55,912 psi | 88% | 2848 fps | 99.7% |
| Bofors RP7 | <<locked>> | 84% | 55,999 psi | 88% | 2736 fps | 99.9% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 55,361 psi | 87% | 2844 fps | 99.6% |
| Hodgdon H414 | <<locked>> | 84% | 55,477 psi | 87% | 2792 fps | 100% |
| Hodgdon H4350 | <<locked>> | 82% | 54,433 psi | 85% | 2749 fps | 99.6% |
| Hodgdon H4831 | <<locked>> | 92% | 55,869 psi | 88% | 2795 fps | 98.5% |
| Hodgdon H4831 SC | <<locked>> | 92% | 54,737 psi | 86% | 2779 fps | 98.3% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 54,984 psi | 86% | 2717 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 55,376 psi | 87% | 2953 fps | 100% |
| Hodgdon Superformance | <<locked>> | 84% | 55,753 psi | 87% | 2828 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,115 psi | 58% | 1722 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 57,566 psi | 90% | 2776 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 84% | 57,493 psi | 90% | 2759 fps | 100% |
| IMR 4831 | <<locked>> | 86% | 54,056 psi | 85% | 2730 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 56,869 psi | 89% | 2779 fps | 98.8% |
| IMR 7828 SSC | <<locked>> | 96% | 57,682 psi | 90% | 2890 fps | 99.3% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 40,321 psi | 63% | 2625 fps | 96.1% |
| Lovex S065 | <<locked>> | 84% | 54,694 psi | 86% | 2707 fps | 100% |
| Lovex S070 | <<locked>> | 86% | 56,231 psi | 88% | 2756 fps | 100% |
| Lovex S071ᴾ | <<locked>> | 100% | 57,319 psi | 90% | 2779 fps | 100% |
| Norma 204 | <<locked>> | 86% | 55,071 psi | 86% | 2779 fps | 99.4% |
| Norma 217ᴾ | <<locked>> | 100% | 40,379 psi | 63% | 2648 fps | 98.4% |
| Norma MRP | <<locked>> | 92% | 55,782 psi | 87% | 2871 fps | 100% |
| Norma URP | <<locked>> | 86% | 55,695 psi | 87% | 2769 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 54,317 psi | 85% | 2851 fps | 99.2% |
| Ramshot Hunter | <<locked>> | 86% | 54,636 psi | 86% | 2779 fps | 100% |
| Ramshot Magnum | <<locked>> | 98% | 56,942 psi | 89% | 2848 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,072 psi | 60% | 1765 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 57,421 psi | 90% | 2812 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 55,883 psi | 88% | 2841 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 56,057 psi | 88% | 2949 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 50,865 psi | 80% | 2838 fps | 97.6% |
| Rottweil R 903 | <<locked>> | 82% | 57,421 psi | 90% | 2733 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 55,622 psi | 87% | 2762 fps | 99% |
| Rottweil R 905 | <<locked>> | 92% | 57,188 psi | 90% | 2828 fps | 99.8% |
| Rottweil R 907 | <<locked>> | 84% | 55,999 psi | 88% | 2736 fps | 99.9% |
| Shooters World Long Rifle | <<locked>> | 84% | 54,694 psi | 86% | 2707 fps | 100% |
| Shooters World SW4350 | <<locked>> | 86% | 56,231 psi | 88% | 2756 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 57,014 psi | 89% | 2605 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 57,479 psi | 90% | 2717 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 56,753 psi | 89% | 2825 fps | 99.7% |
| Somchem S355 | <<locked>> | 82% | 57,058 psi | 89% | 2726 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 57,145 psi | 90% | 2759 fps | 98.6% |
| Somchem S365 | <<locked>> | 88% | 56,260 psi | 88% | 2772 fps | 100% |
| Somchem S385 | <<locked>> | 92% | 57,711 psi | 90% | 2799 fps | 100% |
| Vihtavuori N150 | <<locked>> | 82% | 54,679 psi | 86% | 2651 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 57,595 psi | 90% | 2762 fps | 100% |
| Vihtavuori N165 | <<locked>> | 96% | 57,174 psi | 90% | 2782 fps | 99.9% |
| Vihtavuori N550 | <<locked>> | 86% | 56,681 psi | 89% | 2769 fps | 100% |
| Vihtavuori N555 | <<locked>> | 92% | 55,869 psi | 88% | 2795 fps | 100% |
| Vihtavuori N560 | <<locked>> | 92% | 55,593 psi | 87% | 2867 fps | 98.7% |
| Vihtavuori N565 | <<locked>> | 98% | 55,463 psi | 87% | 2848 fps | 98.8% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 52,025 psi | 82% | 2844 fps | 97.3% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 56,985 psi | 89% | 2723 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 55,477 psi | 87% | 2792 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 96% | 55,230 psi | 87% | 2900 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 57,551 psi | 90% | 2795 fps | 99.7% |
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 3100 | <<locked>> | 80% | 35,070 psi | 55% | 2388 fps | 97.9% |
| Accurate 4350 | <<locked>> | 80% | 46,920 psi | 74% | 2631 fps | 100% |
| Accurate MAGPRO | <<locked>> | 86% | 44,309 psi | 69% | 2671 fps | 95.7% |
| ADI AR 2209 | <<locked>> | 80% | 39,131 psi | 61% | 2513 fps | 96.6% |
| ADI AR 2213 | <<locked>> | 84% | 39,885 psi | 63% | 2559 fps | 95.4% |
| ADI AR 2217 | <<locked>> | 92% | 38,522 psi | 60% | 2526 fps | 95.1% |
| ADI AR 2225 | <<locked>> | 90% | 32,372 psi | 51% | 2428 fps | 96% |
| Alliant Reloder-16 | <<locked>> | 80% | 44,875 psi | 70% | 2635 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 80% | 51,924 psi | 81% | 2746 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 39,117 psi | 61% | 2507 fps | 96.6% |
| Alliant Reloder-22 | <<locked>> | 80% | 34,925 psi | 55% | 2451 fps | 95.2% |
| Alliant Reloder-23 | <<locked>> | 80% | 33,707 psi | 53% | 2418 fps | 99.8% |
| Alliant Reloder-25 | <<locked>> | 80% | 29,356 psi | 46% | 2329 fps | 96.4% |
| Alliant Reloder-26 | <<locked>> | 80% | 36,927 psi | 58% | 2552 fps | 99.4% |
| Baschieri & Pellagri 109 | <<locked>> | 92% | 50,749 psi | 80% | 2703 fps | 95.4% |
| Bofors RP15 | <<locked>> | 82% | 34,809 psi | 55% | 2444 fps | 95% |
| Bofors RP30 | <<locked>> | 90% | 37,333 psi | 59% | 2536 fps | 95.3% |
| Bofors RP5 | <<locked>> | 80% | 34,925 psi | 55% | 2451 fps | 95.2% |
| Bofors RP7 | <<locked>> | 80% | 49,414 psi | 77% | 2631 fps | 99.4% |
| Hodgdon H1000 | <<locked>> | 88% | 36,724 psi | 58% | 2487 fps | 95.1% |
| Hodgdon H414 | <<locked>> | 80% | 48,501 psi | 76% | 2680 fps | 99.6% |
| Hodgdon H4350 | <<locked>> | 80% | 50,952 psi | 80% | 2690 fps | 99.2% |
| Hodgdon H4831 | <<locked>> | 84% | 42,685 psi | 67% | 2566 fps | 95.6% |
| Hodgdon H4831 SC | <<locked>> | 84% | 41,829 psi | 66% | 2549 fps | 95.4% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 42,438 psi | 67% | 2523 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 86% | 34,867 psi | 55% | 2526 fps | 95.7% |
| Hodgdon Superformance | <<locked>> | 80% | 48,167 psi | 75% | 2707 fps | 99.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,905 psi | 44% | 1542 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 44,947 psi | 70% | 2572 fps | 98.9% |
| IMR 4451 Enduron | <<locked>> | 80% | 50,879 psi | 80% | 2657 fps | 99.7% |
| IMR 4831 | <<locked>> | 80% | 44,614 psi | 70% | 2579 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 82% | 41,539 psi | 65% | 2510 fps | 95.5% |
| IMR 7828 SSC | <<locked>> | 84% | 38,479 psi | 60% | 2539 fps | 95% |
| IMR 8133 Enduron | <<locked>> | 98% | 37,724 psi | 59% | 2566 fps | 95.1% |
| Lovex S065 | <<locked>> | 80% | 48,356 psi | 76% | 2608 fps | 99.9% |
| Lovex S070 | <<locked>> | 80% | 46,688 psi | 73% | 2598 fps | 99.5% |
| Lovex S071 | <<locked>> | 80% | 30,313 psi | 48% | 2274 fps | 96.2% |
| Norma 204 | <<locked>> | 80% | 44,875 psi | 70% | 2605 fps | 97.9% |
| Norma 217 | <<locked>> | 94% | 33,083 psi | 52% | 2474 fps | 95.7% |
| Norma MRP | 67.8 gr | 80% | 36,695 psi | 57% | 2516 fps | 97.3% |
| Norma URP | <<locked>> | 80% | 45,948 psi | 72% | 2615 fps | 100% |
| Ramshot Grand | <<locked>> | 84% | 37,971 psi | 60% | 2539 fps | 95.2% |
| Ramshot Hunter | <<locked>> | 80% | 44,730 psi | 70% | 2615 fps | 99.6% |
| Ramshot Magnum | <<locked>> | 84% | 33,953 psi | 53% | 2428 fps | 95.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,529 psi | 45% | 1578 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 46,818 psi | 73% | 2651 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 45,078 psi | 71% | 2671 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 84% | 31,705 psi | 50% | 2438 fps | 95.4% |
| ReloadSwiss RS 80 | <<locked>> | 96% | 43,801 psi | 69% | 2707 fps | 95.7% |
| Rottweil R 903 | <<locked>> | 80% | 53,911 psi | 84% | 2684 fps | 100% |
| Rottweil R 904 | <<locked>> | 80% | 40,466 psi | 63% | 2493 fps | 95.8% |
| Rottweil R 905 | <<locked>> | 80% | 38,450 psi | 60% | 2493 fps | 96.6% |
| Rottweil R 907 | <<locked>> | 80% | 49,414 psi | 77% | 2631 fps | 99.4% |
| Shooters World Long Rifle | <<locked>> | 80% | 48,356 psi | 76% | 2608 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 80% | 46,688 psi | 73% | 2598 fps | 99.5% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 53,708 psi | 84% | 2562 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 47,413 psi | 74% | 2562 fps | 99.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 38,116 psi | 60% | 2487 fps | 96.4% |
| Somchem S355 | <<locked>> | 80% | 53,621 psi | 84% | 2680 fps | 100% |
| Somchem S361 | <<locked>> | 80% | 41,162 psi | 65% | 2484 fps | 95.1% |
| Somchem S365 | <<locked>> | 80% | 43,134 psi | 68% | 2575 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 39,015 psi | 61% | 2477 fps | 97.5% |
| Vihtavuori N150 | <<locked>> | 80% | 51,314 psi | 80% | 2605 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 47,355 psi | 74% | 2612 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 33,823 psi | 53% | 2356 fps | 95.4% |
| Vihtavuori N550 | <<locked>> | 80% | 46,659 psi | 73% | 2615 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 37,913 psi | 59% | 2493 fps | 99.8% |
| Vihtavuori N560 | 71.1 gr | 84% | 42,177 psi | 66% | 2625 fps | 95.7% |
| Vihtavuori N565 | <<locked>> | 88% | 39,639 psi | 62% | 2559 fps | 95.2% |
| Vihtavuori N568 | <<locked>> | 96% | 45,208 psi | 71% | 2720 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 46,485 psi | 73% | 2575 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 48,660 psi | 76% | 2684 fps | 99.6% |
| Winchester StaBALL HD | 67 gr | 80% | 29,921 psi | 47% | 2438 fps | 99.9% |
| Winchester Supreme 780 | <<locked>> | 80% | 35,636 psi | 56% | 2405 fps | 95.4% |
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 74 powders for .300 Weath. Mag. loaded with the .308 | 201gr | RWS Kegelspitz. Hodgdon Retumbo delivers the highest muzzle velocity at 2,953 fps; across all powders the maximum-charge window runs from 1,722 fps to 2,953 fps. ADI AR 2217 gives the best case fill at 100 %, and 74 of the 74 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 58–90 %, leaving at least 10 % headroom. The 201.0 gr projectile in 0.308" calls for a 1:14.0 twist; slower twists will usually not stabilise this weight. ADI AR 2217, ADI AR 2225, Alliant Reloder-25 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. Winchester StaBALL HD, Vihtavuori N560, Norma MRP rank at the top here: for .300 Weath. Mag. with the .308 | 201gr | RWS Kegelspitz 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.