Load Specifications
Load data in caliber .300 Weath. Mag. with .308 | 185gr | 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 Accurate MAGPRO.
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 2700 | <<locked>> | 84% | 56,898 psi | 89% | 2808 fps | 99.6% |
| Accurate 3100 | <<locked>> | 96% | 55,492 psi | 87% | 2858 fps | 100% |
| Accurate 4350 | <<locked>> | 88% | 57,014 psi | 89% | 2894 fps | 100% |
| Accurate MAGPRO | <<locked>> | 96% | 54,694 psi | 86% | 2949 fps | 96.5% |
| ADI AR 2208 | <<locked>> | 82% | 55,056 psi | 86% | 2808 fps | 100% |
| ADI AR 2209 | <<locked>> | 92% | 54,186 psi | 85% | 2894 fps | 98.9% |
| ADI AR 2213 | <<locked>> | 96% | 55,593 psi | 87% | 2949 fps | 98.3% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 46,456 psi | 73% | 2779 fps | 96.6% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 41,234 psi | 65% | 2736 fps | 98.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 56,115 psi | 88% | 2828 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 88% | 54,230 psi | 85% | 2897 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 84% | 55,245 psi | 87% | 2910 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 94% | 57,290 psi | 90% | 2936 fps | 99.3% |
| Alliant Reloder-22 | <<locked>> | 96% | 55,361 psi | 87% | 2946 fps | 99.2% |
| Alliant Reloder-23 | <<locked>> | 98% | 56,231 psi | 88% | 2920 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 51,909 psi | 81% | 2920 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 94% | 56,768 psi | 89% | 3012 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 98% | 57,493 psi | 90% | 2907 fps | 95.8% |
| Bofors RP15 | <<locked>> | 98% | 54,302 psi | 85% | 2930 fps | 99% |
| Bofors RP3 | <<locked>> | 82% | 57,188 psi | 90% | 2844 fps | 100% |
| Bofors RP30ᴾ | <<locked>> | 100% | 47,776 psi | 75% | 2848 fps | 97.4% |
| Bofors RP5 | <<locked>> | 96% | 55,361 psi | 87% | 2946 fps | 99.2% |
| Bofors RP7 | <<locked>> | 86% | 56,318 psi | 88% | 2844 fps | 99.6% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 51,039 psi | 80% | 2871 fps | 98.3% |
| Hodgdon H380 | <<locked>> | 82% | 57,203 psi | 90% | 2864 fps | 100% |
| Hodgdon H414 | <<locked>> | 86% | 55,085 psi | 86% | 2890 fps | 99.8% |
| Hodgdon H4350 | <<locked>> | 84% | 54,534 psi | 85% | 2854 fps | 99.1% |
| Hodgdon H4831 | <<locked>> | 94% | 55,521 psi | 87% | 2890 fps | 97.6% |
| Hodgdon H4831 SC | <<locked>> | 94% | 54,360 psi | 85% | 2871 fps | 97.4% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 54,578 psi | 86% | 2822 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 50,923 psi | 80% | 2979 fps | 99.4% |
| Hodgdon Superformance | <<locked>> | 86% | 55,506 psi | 87% | 2930 fps | 99.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,927 psi | 58% | 1788 fps | 100% |
| IMR 4350 | <<locked>> | 90% | 57,682 psi | 90% | 2881 fps | 99.7% |
| IMR 4451 Enduron | <<locked>> | 86% | 57,667 psi | 90% | 2867 fps | 99.8% |
| IMR 4831 | <<locked>> | 90% | 57,392 psi | 90% | 2887 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 56,753 psi | 89% | 2874 fps | 98% |
| IMR 7828 SSC | <<locked>> | 98% | 57,043 psi | 89% | 2986 fps | 98.6% |
| Lovex S065 | <<locked>> | 86% | 54,708 psi | 86% | 2812 fps | 100% |
| Lovex S070 | <<locked>> | 88% | 56,318 psi | 88% | 2861 fps | 99.9% |
| Lovex S071ᴾ | <<locked>> | 100% | 52,982 psi | 83% | 2822 fps | 99.9% |
| Norma 204 | <<locked>> | 88% | 54,998 psi | 86% | 2881 fps | 98.9% |
| Norma MRP | <<locked>> | 94% | 54,998 psi | 86% | 2969 fps | 99.8% |
| Norma URP | <<locked>> | 88% | 55,564 psi | 87% | 2881 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 53,708 psi | 84% | 2943 fps | 98.4% |
| Ramshot Hunter | <<locked>> | 88% | 54,404 psi | 85% | 2884 fps | 99.9% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 55,898 psi | 88% | 2940 fps | 99.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,666 psi | 59% | 1831 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 57,014 psi | 89% | 2854 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 54,694 psi | 86% | 2897 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 56,956 psi | 89% | 2917 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 55,317 psi | 87% | 2946 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 51,358 psi | 80% | 2976 fps | 99.9% |
| Rottweil R 903 | <<locked>> | 84% | 57,464 psi | 90% | 2844 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 55,463 psi | 87% | 2861 fps | 98.2% |
| Rottweil R 905 | <<locked>> | 94% | 56,710 psi | 89% | 2927 fps | 99.3% |
| Rottweil R 907 | <<locked>> | 86% | 56,318 psi | 88% | 2844 fps | 99.6% |
| Shooters World Long Rifle | <<locked>> | 86% | 54,708 psi | 86% | 2812 fps | 100% |
| Shooters World SW4350 | <<locked>> | 88% | 56,318 psi | 88% | 2861 fps | 99.9% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 55,347 psi | 87% | 2854 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 57,406 psi | 90% | 2717 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 57,595 psi | 90% | 2818 fps | 99.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 56,260 psi | 88% | 2920 fps | 99.3% |
| Somchem S355 | <<locked>> | 84% | 57,014 psi | 89% | 2838 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 57,116 psi | 90% | 2854 fps | 97.9% |
| Somchem S365 | <<locked>> | 90% | 55,724 psi | 87% | 2881 fps | 100% |
| Somchem S385 | <<locked>> | 94% | 57,232 psi | 90% | 2897 fps | 99.7% |
| Vihtavuori N150 | <<locked>> | 84% | 54,882 psi | 86% | 2762 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 57,290 psi | 90% | 2871 fps | 100% |
| Vihtavuori N165 | <<locked>> | 98% | 56,666 psi | 89% | 2877 fps | 99.5% |
| Vihtavuori N550 | <<locked>> | 88% | 56,550 psi | 89% | 2877 fps | 100% |
| Vihtavuori N555 | <<locked>> | 94% | 55,056 psi | 86% | 2897 fps | 100% |
| Vihtavuori N560 | <<locked>> | 94% | 54,969 psi | 86% | 2963 fps | 97.8% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 54,433 psi | 85% | 2933 fps | 98% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 57,072 psi | 89% | 2831 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 55,317 psi | 87% | 2894 fps | 99.8% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 57,551 psi | 90% | 3058 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 57,406 psi | 90% | 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% | 49,922 psi | 78% | 2697 fps | 98.8% |
| Accurate 3100 | <<locked>> | 80% | 32,358 psi | 51% | 2415 fps | 95.9% |
| Accurate 4350 | <<locked>> | 80% | 43,540 psi | 68% | 2674 fps | 99.8% |
| Accurate MAGPRO | 80.7 gr | 94% | 50,995 psi | 80% | 2887 fps | 95.7% |
| ADI AR 2208 | <<locked>> | 80% | 51,706 psi | 81% | 2756 fps | 100% |
| ADI AR 2209 | <<locked>> | 82% | 38,841 psi | 61% | 2595 fps | 95.3% |
| ADI AR 2213 | <<locked>> | 88% | 42,366 psi | 66% | 2703 fps | 95% |
| ADI AR 2217 | <<locked>> | 98% | 43,453 psi | 68% | 2720 fps | 95.6% |
| ADI AR 2225 | <<locked>> | 94% | 33,982 psi | 53% | 2552 fps | 95.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 52,692 psi | 83% | 2776 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 41,727 psi | 65% | 2680 fps | 99.8% |
| Alliant Reloder-17 | <<locked>> | 80% | 47,935 psi | 75% | 2799 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 82% | 38,856 psi | 61% | 2595 fps | 95.4% |
| Alliant Reloder-22 | <<locked>> | 86% | 39,494 psi | 62% | 2651 fps | 95.8% |
| Alliant Reloder-23 | <<locked>> | 80% | 31,067 psi | 49% | 2448 fps | 98.8% |
| Alliant Reloder-25 | <<locked>> | 84% | 30,937 psi | 48% | 2461 fps | 95.9% |
| Alliant Reloder-26 | <<locked>> | 80% | 33,576 psi | 53% | 2569 fps | 97.8% |
| Baschieri & Pellagri 109 | <<locked>> | 96% | 54,070 psi | 85% | 2851 fps | 95% |
| Bofors RP15 | <<locked>> | 88% | 39,160 psi | 61% | 2641 fps | 95.5% |
| Bofors RP3 | <<locked>> | 80% | 53,621 psi | 84% | 2795 fps | 100% |
| Bofors RP30 | <<locked>> | 96% | 41,771 psi | 65% | 2730 fps | 95.7% |
| Bofors RP5 | <<locked>> | 86% | 39,494 psi | 62% | 2651 fps | 95.8% |
| Bofors RP7 | <<locked>> | 80% | 46,586 psi | 73% | 2680 fps | 98.4% |
| Hodgdon H1000 | <<locked>> | 94% | 41,597 psi | 65% | 2684 fps | 95.7% |
| Hodgdon H380 | <<locked>> | 80% | 53,650 psi | 84% | 2812 fps | 100% |
| Hodgdon H414 | <<locked>> | 80% | 45,252 psi | 71% | 2720 fps | 98.6% |
| Hodgdon H4350 | <<locked>> | 80% | 47,892 psi | 75% | 2736 fps | 98.1% |
| Hodgdon H4831 | <<locked>> | 88% | 45,368 psi | 71% | 2713 fps | 95.3% |
| Hodgdon H4831 SC | <<locked>> | 88% | 44,425 psi | 70% | 2694 fps | 95% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 39,407 psi | 62% | 2569 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 90% | 36,666 psi | 57% | 2657 fps | 95.1% |
| Hodgdon Superformance | <<locked>> | 80% | 44,425 psi | 70% | 2740 fps | 98.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,702 psi | 43% | 1601 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 42,003 psi | 66% | 2608 fps | 97.5% |
| IMR 4451 Enduron | <<locked>> | 80% | 47,892 psi | 75% | 2707 fps | 98.9% |
| IMR 4831 | <<locked>> | 80% | 41,553 psi | 65% | 2621 fps | 99.6% |
| IMR 4955 Enduron | <<locked>> | 86% | 44,237 psi | 69% | 2654 fps | 95.2% |
| IMR 7828 SSC | <<locked>> | 90% | 43,526 psi | 68% | 2740 fps | 95.5% |
| Lovex S065 | <<locked>> | 80% | 45,527 psi | 71% | 2657 fps | 99.4% |
| Lovex S070 | <<locked>> | 80% | 43,845 psi | 69% | 2644 fps | 98.5% |
| Lovex S071 | <<locked>> | 84% | 31,647 psi | 50% | 2398 fps | 95.6% |
| Norma 204 | <<locked>> | 80% | 41,887 psi | 66% | 2641 fps | 96.2% |
| Norma MRP | 67.4 gr | 80% | 33,620 psi | 53% | 2536 fps | 95% |
| Norma URP | <<locked>> | 80% | 42,859 psi | 67% | 2661 fps | 99.7% |
| Ramshot Grand | <<locked>> | 90% | 43,323 psi | 68% | 2749 fps | 95.9% |
| Ramshot Hunter | <<locked>> | 80% | 41,626 psi | 65% | 2654 fps | 98.6% |
| Ramshot Magnum | <<locked>> | 88% | 35,984 psi | 56% | 2562 fps | 95.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,268 psi | 44% | 1637 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 53,417 psi | 84% | 2799 fps | 99.8% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 50,865 psi | 80% | 2844 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 43,395 psi | 68% | 2694 fps | 99.7% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 41,655 psi | 65% | 2707 fps | 99.4% |
| ReloadSwiss RS 76 | <<locked>> | 90% | 35,897 psi | 56% | 2638 fps | 96.1% |
| Rottweil R 903 | <<locked>> | 80% | 50,531 psi | 79% | 2743 fps | 100% |
| Rottweil R 904 | <<locked>> | 84% | 43,091 psi | 68% | 2638 fps | 95.5% |
| Rottweil R 905 | <<locked>> | 82% | 38,116 psi | 60% | 2579 fps | 95.4% |
| Rottweil R 907 | <<locked>> | 80% | 46,586 psi | 73% | 2680 fps | 98.4% |
| Shooters World Long Rifle | <<locked>> | 80% | 45,527 psi | 71% | 2657 fps | 99.4% |
| Shooters World SW4350 | <<locked>> | 80% | 43,845 psi | 69% | 2644 fps | 98.5% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 51,779 psi | 81% | 2799 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 50,894 psi | 80% | 2631 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 44,454 psi | 70% | 2602 fps | 98.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 82% | 37,782 psi | 59% | 2572 fps | 95.2% |
| Somchem S355 | <<locked>> | 80% | 50,459 psi | 79% | 2740 fps | 100% |
| Somchem S361 | <<locked>> | 86% | 46,963 psi | 74% | 2687 fps | 95.7% |
| Somchem S365 | <<locked>> | 80% | 39,552 psi | 62% | 2618 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 36,260 psi | 57% | 2507 fps | 95.6% |
| Vihtavuori N150 | <<locked>> | 80% | 48,254 psi | 76% | 2664 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 44,237 psi | 69% | 2661 fps | 99.8% |
| Vihtavuori N165 | <<locked>> | 84% | 35,752 psi | 56% | 2490 fps | 95% |
| Vihtavuori N550 | <<locked>> | 80% | 43,642 psi | 68% | 2661 fps | 99.7% |
| Vihtavuori N555 | <<locked>> | 80% | 34,766 psi | 54% | 2520 fps | 98.8% |
| Vihtavuori N560 | 74.1 gr | 88% | 44,628 psi | 70% | 2772 fps | 95.3% |
| Vihtavuori N565 | <<locked>> | 94% | 44,512 psi | 70% | 2756 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 43,207 psi | 68% | 2625 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 45,252 psi | 71% | 2720 fps | 98.6% |
| Winchester StaBALL HD | <<locked>> | 80% | 27,528 psi | 43% | 2444 fps | 98.7% |
| Winchester Supreme 780 | <<locked>> | 84% | 37,956 psi | 59% | 2546 fps | 95.1% |
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 78 powders for .300 Weath. Mag. loaded with the .308 | 185gr | RWS Evolution. Winchester StaBALL HD delivers the highest muzzle velocity at 3,058 fps; across all powders the maximum-charge window runs from 1,788 fps to 3,058 fps. ADI AR 2217 gives the best case fill at 100 %, and 78 of the 78 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 185.0 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, Accurate MAGPRO rank at the top here: for .300 Weath. Mag. with the .308 | 185gr | RWS Evolution 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.