Load Specifications
Load data in caliber .300 Weath. Mag. with .308 | 184gr | RWS Evolution bullet and 78 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Norma MRP, Vihtavuori N560 and Alliant Reloder-26.
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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You can find more information in our FAQ: How can I use the Personalized Load Calculator?
Max Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2700 | <<locked>> | 84% | 56,492 psi | 89% | 2808 fps | 99.5% |
| Accurate 3100 | <<locked>> | 96% | 54,969 psi | 86% | 2858 fps | 100% |
| Accurate 4350 | <<locked>> | 88% | 56,739 psi | 89% | 2897 fps | 100% |
| Accurate MAGPRO | <<locked>> | 96% | 54,201 psi | 85% | 2946 fps | 96.3% |
| ADI AR 2208 | <<locked>> | 82% | 54,621 psi | 86% | 2808 fps | 100% |
| ADI AR 2209 | <<locked>> | 94% | 57,406 psi | 90% | 2949 fps | 99.2% |
| ADI AR 2213 | <<locked>> | 96% | 55,129 psi | 86% | 2949 fps | 98.1% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 46,079 psi | 72% | 2779 fps | 96.4% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 40,872 psi | 64% | 2733 fps | 98.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 55,883 psi | 88% | 2831 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 90% | 57,421 psi | 90% | 2949 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 84% | 54,998 psi | 86% | 2913 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 94% | 56,811 psi | 89% | 2936 fps | 99.2% |
| Alliant Reloder-22 | <<locked>> | 96% | 54,882 psi | 86% | 2946 fps | 99.1% |
| Alliant Reloder-23 | <<locked>> | 98% | 55,709 psi | 87% | 2920 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 51,445 psi | 81% | 2920 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 94% | 56,260 psi | 88% | 3012 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 57,450 psi | 90% | 2986 fps | 99.3% |
| Bofors RP3 | <<locked>> | 82% | 56,942 psi | 89% | 2851 fps | 100% |
| Bofors RP30ᴾ | <<locked>> | 100% | 47,514 psi | 74% | 2851 fps | 97.3% |
| Bofors RP5 | <<locked>> | 96% | 54,882 psi | 86% | 2946 fps | 99.1% |
| Bofors RP7 | <<locked>> | 86% | 55,883 psi | 88% | 2841 fps | 99.5% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 50,618 psi | 79% | 2867 fps | 98.1% |
| Hodgdon H380 | <<locked>> | 82% | 56,942 psi | 89% | 2867 fps | 100% |
| Hodgdon H414 | <<locked>> | 86% | 54,853 psi | 86% | 2894 fps | 99.7% |
| Hodgdon H4350 | <<locked>> | 86% | 57,580 psi | 90% | 2907 fps | 99.4% |
| Hodgdon H4831 | <<locked>> | 94% | 55,042 psi | 86% | 2887 fps | 97.5% |
| Hodgdon H4831 SC | <<locked>> | 94% | 53,969 psi | 85% | 2871 fps | 97.3% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 54,099 psi | 85% | 2822 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 50,473 psi | 79% | 2976 fps | 99.3% |
| Hodgdon Superformance | <<locked>> | 86% | 55,042 psi | 86% | 2930 fps | 99.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,825 psi | 58% | 1791 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 57,522 psi | 90% | 2838 fps | 100% |
| IMR 4350 | <<locked>> | 90% | 57,217 psi | 90% | 2881 fps | 99.7% |
| IMR 4451 Enduron | <<locked>> | 86% | 57,479 psi | 90% | 2871 fps | 99.8% |
| IMR 4831 | <<locked>> | 90% | 56,927 psi | 89% | 2887 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 56,347 psi | 88% | 2874 fps | 97.9% |
| IMR 7828 SSC | <<locked>> | 98% | 56,550 psi | 89% | 2986 fps | 98.5% |
| Lovex S065 | <<locked>> | 86% | 54,505 psi | 85% | 2815 fps | 100% |
| Lovex S070 | <<locked>> | 88% | 55,898 psi | 88% | 2861 fps | 99.8% |
| Lovex S071ᴾ | <<locked>> | 100% | 52,518 psi | 82% | 2822 fps | 99.9% |
| Norma 204 | <<locked>> | 88% | 54,563 psi | 86% | 2881 fps | 98.8% |
| Norma MRP | <<locked>> | 94% | 54,549 psi | 85% | 2966 fps | 99.7% |
| Norma URP | <<locked>> | 88% | 55,129 psi | 86% | 2877 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 57,305 psi | 90% | 3005 fps | 98.9% |
| Ramshot Hunter | <<locked>> | 90% | 57,711 psi | 90% | 2940 fps | 100% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 55,390 psi | 87% | 2940 fps | 99.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,739 psi | 59% | 1837 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 56,594 psi | 89% | 2854 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 54,404 psi | 85% | 2904 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 56,681 psi | 89% | 2920 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 54,839 psi | 86% | 2946 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 50,908 psi | 80% | 2976 fps | 99.8% |
| Rottweil R 903 | <<locked>> | 84% | 57,029 psi | 89% | 2844 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 55,259 psi | 87% | 2864 fps | 98.2% |
| Rottweil R 905 | <<locked>> | 94% | 56,202 psi | 88% | 2923 fps | 99.2% |
| Rottweil R 907 | <<locked>> | 86% | 55,883 psi | 88% | 2841 fps | 99.5% |
| Shooters World Long Rifle | <<locked>> | 86% | 54,505 psi | 85% | 2815 fps | 100% |
| Shooters World SW4350 | <<locked>> | 88% | 55,898 psi | 88% | 2861 fps | 99.8% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 54,926 psi | 86% | 2851 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 57,188 psi | 90% | 2720 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 57,159 psi | 90% | 2818 fps | 99.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 55,753 psi | 87% | 2920 fps | 99.2% |
| Somchem S355 | <<locked>> | 84% | 56,753 psi | 89% | 2841 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 56,753 psi | 89% | 2854 fps | 97.7% |
| Somchem S365 | <<locked>> | 90% | 55,216 psi | 87% | 2884 fps | 100% |
| Somchem S385 | <<locked>> | 94% | 56,782 psi | 89% | 2897 fps | 99.6% |
| Vihtavuori N150 | <<locked>> | 84% | 54,433 psi | 85% | 2762 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 57,087 psi | 89% | 2874 fps | 100% |
| Vihtavuori N165 | <<locked>> | 98% | 56,231 psi | 88% | 2874 fps | 99.4% |
| Vihtavuori N550 | <<locked>> | 88% | 56,101 psi | 88% | 2877 fps | 100% |
| Vihtavuori N555 | <<locked>> | 94% | 54,520 psi | 85% | 2894 fps | 100% |
| Vihtavuori N560 | <<locked>> | 94% | 54,505 psi | 85% | 2959 fps | 97.7% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 53,940 psi | 85% | 2933 fps | 97.8% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 56,608 psi | 89% | 2831 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 55,056 psi | 86% | 2897 fps | 99.7% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 56,869 psi | 89% | 3058 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 56,913 psi | 89% | 2897 fps | 99.2% |
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 2700 | <<locked>> | 80% | 49,530 psi | 78% | 2697 fps | 98.7% |
| Accurate 3100 | <<locked>> | 80% | 32,024 psi | 50% | 2411 fps | 95.7% |
| Accurate 4350 | <<locked>> | 80% | 43,134 psi | 68% | 2671 fps | 99.7% |
| Accurate MAGPRO | <<locked>> | 94% | 50,517 psi | 79% | 2884 fps | 95.4% |
| ADI AR 2208 | <<locked>> | 80% | 51,488 psi | 81% | 2759 fps | 100% |
| ADI AR 2209 | <<locked>> | 82% | 38,667 psi | 61% | 2598 fps | 95.1% |
| ADI AR 2213 | <<locked>> | 90% | 45,034 psi | 71% | 2762 fps | 95.8% |
| ADI AR 2217 | <<locked>> | 98% | 43,105 psi | 68% | 2717 fps | 95.4% |
| ADI AR 2225 | <<locked>> | 94% | 33,721 psi | 53% | 2549 fps | 95% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 52,460 psi | 82% | 2782 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 41,510 psi | 65% | 2684 fps | 99.8% |
| Alliant Reloder-17 | <<locked>> | 80% | 47,703 psi | 75% | 2802 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 82% | 38,667 psi | 61% | 2595 fps | 95.2% |
| Alliant Reloder-22 | <<locked>> | 86% | 39,131 psi | 61% | 2648 fps | 95.6% |
| Alliant Reloder-23 | <<locked>> | 80% | 30,763 psi | 48% | 2441 fps | 98.7% |
| Alliant Reloder-25 | <<locked>> | 84% | 30,661 psi | 48% | 2457 fps | 95.6% |
| Alliant Reloder-26 | 69.3 gr | 80% | 33,359 psi | 52% | 2569 fps | 97.7% |
| Bofors RP15 | <<locked>> | 88% | 38,798 psi | 61% | 2638 fps | 95.3% |
| Bofors RP3 | <<locked>> | 80% | 53,156 psi | 83% | 2795 fps | 100% |
| Bofors RP30 | <<locked>> | 96% | 41,394 psi | 65% | 2726 fps | 95.5% |
| Bofors RP5 | <<locked>> | 86% | 39,131 psi | 61% | 2648 fps | 95.6% |
| Bofors RP7 | <<locked>> | 80% | 46,412 psi | 73% | 2684 fps | 98.3% |
| Hodgdon H1000 | <<locked>> | 94% | 41,423 psi | 65% | 2684 fps | 95.5% |
| Hodgdon H380 | <<locked>> | 80% | 53,243 psi | 83% | 2812 fps | 100% |
| Hodgdon H414 | <<locked>> | 80% | 44,875 psi | 70% | 2720 fps | 98.5% |
| Hodgdon H4350 | <<locked>> | 80% | 47,485 psi | 74% | 2736 fps | 98% |
| Hodgdon H4831 | <<locked>> | 88% | 45,005 psi | 71% | 2710 fps | 95.1% |
| Hodgdon H4831 SC | <<locked>> | 90% | 47,282 psi | 74% | 2756 fps | 95.8% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 39,030 psi | 61% | 2566 fps | 99.9% |
| Hodgdon Retumbo | <<locked>> | 92% | 38,769 psi | 61% | 2717 fps | 96% |
| Hodgdon Superformance | <<locked>> | 80% | 44,208 psi | 69% | 2740 fps | 98.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,601 psi | 43% | 1601 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 54,201 psi | 85% | 2792 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 41,829 psi | 66% | 2608 fps | 97.3% |
| IMR 4451 Enduron | <<locked>> | 80% | 47,703 psi | 75% | 2707 fps | 98.9% |
| IMR 4831 | <<locked>> | 80% | 41,191 psi | 65% | 2621 fps | 99.5% |
| IMR 4955 Enduron | <<locked>> | 86% | 43,903 psi | 69% | 2654 fps | 95% |
| IMR 7828 SSC | <<locked>> | 90% | 43,163 psi | 68% | 2736 fps | 95.3% |
| Lovex S065 | <<locked>> | 80% | 45,179 psi | 71% | 2657 fps | 99.3% |
| Lovex S070 | <<locked>> | 80% | 43,497 psi | 68% | 2644 fps | 98.4% |
| Lovex S071 | <<locked>> | 84% | 31,488 psi | 49% | 2398 fps | 95.5% |
| Norma 204 | <<locked>> | 80% | 41,524 psi | 65% | 2638 fps | 96% |
| Norma MRP | 68.9 gr | 82% | 35,708 psi | 56% | 2595 fps | 95.8% |
| Norma URP | <<locked>> | 80% | 42,438 psi | 67% | 2661 fps | 99.6% |
| Ramshot Grand | <<locked>> | 90% | 42,946 psi | 67% | 2746 fps | 95.6% |
| Ramshot Hunter | <<locked>> | 80% | 41,278 psi | 65% | 2651 fps | 98.4% |
| Ramshot Magnum | <<locked>> | 88% | 35,636 psi | 56% | 2559 fps | 95% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,152 psi | 44% | 1637 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 52,997 psi | 83% | 2799 fps | 99.8% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 50,589 psi | 79% | 2844 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 43,018 psi | 67% | 2690 fps | 99.6% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 41,263 psi | 65% | 2703 fps | 99.3% |
| ReloadSwiss RS 76 | <<locked>> | 90% | 35,563 psi | 56% | 2631 fps | 95.9% |
| Rottweil R 903 | <<locked>> | 80% | 50,111 psi | 79% | 2743 fps | 100% |
| Rottweil R 904 | <<locked>> | 84% | 42,757 psi | 67% | 2638 fps | 95.3% |
| Rottweil R 905 | <<locked>> | 82% | 37,913 psi | 59% | 2582 fps | 95.2% |
| Rottweil R 907 | <<locked>> | 80% | 46,412 psi | 73% | 2684 fps | 98.3% |
| Shooters World Long Rifle | <<locked>> | 80% | 45,179 psi | 71% | 2657 fps | 99.3% |
| Shooters World SW4350 | <<locked>> | 80% | 43,497 psi | 68% | 2644 fps | 98.4% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 51,358 psi | 80% | 2799 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 50,488 psi | 79% | 2631 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 44,324 psi | 69% | 2605 fps | 98.4% |
| SNPE Vectan Tubal 8000 | <<locked>> | 82% | 37,579 psi | 59% | 2575 fps | 95% |
| Somchem S355 | <<locked>> | 80% | 50,038 psi | 78% | 2740 fps | 100% |
| Somchem S361 | <<locked>> | 86% | 46,630 psi | 73% | 2684 fps | 95.5% |
| Somchem S365 | <<locked>> | 80% | 39,334 psi | 62% | 2621 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 35,911 psi | 56% | 2507 fps | 95.4% |
| Vihtavuori N150 | <<locked>> | 80% | 47,877 psi | 75% | 2667 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 43,874 psi | 69% | 2657 fps | 99.7% |
| Vihtavuori N165 | <<locked>> | 86% | 38,014 psi | 60% | 2546 fps | 95.8% |
| Vihtavuori N550 | <<locked>> | 80% | 43,250 psi | 68% | 2661 fps | 99.6% |
| Vihtavuori N555 | <<locked>> | 80% | 34,534 psi | 54% | 2520 fps | 98.7% |
| Vihtavuori N560 | 74 gr | 88% | 44,396 psi | 70% | 2772 fps | 95.2% |
| Vihtavuori N565 | <<locked>> | 94% | 44,106 psi | 69% | 2753 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 42,844 psi | 67% | 2621 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 45,034 psi | 71% | 2723 fps | 98.5% |
| Winchester StaBALL HD | <<locked>> | 80% | 27,267 psi | 43% | 2438 fps | 98.4% |
| Winchester Supreme 780 | <<locked>> | 86% | 40,364 psi | 63% | 2605 fps | 95.8% |
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 84 powders for .300 Weath. Mag. loaded with the .308 | 184gr | RWS Evolution. Winchester StaBALL HD delivers the highest muzzle velocity at 3,058 fps; across all powders the maximum-charge window runs from 1,791 fps to 3,058 fps. ADI AR 2217 gives the best case fill at 100 %, and 84 of the 84 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 57–90 %, leaving at least 10 % headroom. The 184.0 gr projectile in 0.308" calls for a 1:13.0 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. Norma MRP, Vihtavuori N560, Alliant Reloder-26 rank at the top here: for .300 Weath. Mag. with the .308 | 184gr | RWS Evolution they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, IMR 8133 Enduron, Vihtavuori N170, Vihtavuori N568 burn incompletely and react more sensitively to barrel length and temperature. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.