Load Specifications
Load data in caliber .300 Weath. Mag. with .311 | 180gr | Norma Semi Soft Point bullet and 76 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 ADI AR 2213.
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>> | 96% | 55,898 psi | 88% | 2904 fps | 100% |
| Accurate 4350 | <<locked>> | 88% | 57,305 psi | 90% | 2940 fps | 100% |
| Accurate MAGPRO | <<locked>> | 94% | 54,230 psi | 85% | 2989 fps | 97% |
| ADI AR 2208 | <<locked>> | 82% | 55,158 psi | 86% | 2851 fps | 100% |
| ADI AR 2209 | <<locked>> | 92% | 54,302 psi | 85% | 2933 fps | 98.8% |
| ADI AR 2213 | <<locked>> | 96% | 55,709 psi | 87% | 2995 fps | 98.2% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 46,688 psi | 73% | 2822 fps | 96.5% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 41,408 psi | 65% | 2776 fps | 98.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 56,420 psi | 88% | 2874 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 88% | 54,404 psi | 85% | 2940 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 84% | 55,521 psi | 87% | 2956 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 94% | 57,522 psi | 90% | 2979 fps | 99.2% |
| Alliant Reloder-22 | <<locked>> | 96% | 55,521 psi | 87% | 2989 fps | 99.1% |
| Alliant Reloder-23 | <<locked>> | 98% | 56,695 psi | 89% | 2966 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 52,156 psi | 82% | 2963 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 94% | 57,290 psi | 90% | 3061 fps | 100% |
| Bofors RP15 | <<locked>> | 98% | 54,462 psi | 85% | 2969 fps | 98.9% |
| Bofors RP3 | <<locked>> | 82% | 57,435 psi | 90% | 2890 fps | 100% |
| Bofors RP30ᴾ | <<locked>> | 100% | 48,269 psi | 76% | 2894 fps | 97.3% |
| Bofors RP5 | <<locked>> | 96% | 55,521 psi | 87% | 2989 fps | 99.1% |
| Bofors RP7 | <<locked>> | 86% | 56,449 psi | 88% | 2890 fps | 99.6% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 51,445 psi | 81% | 2917 fps | 98.2% |
| Hodgdon H380 | <<locked>> | 82% | 57,595 psi | 90% | 2913 fps | 100% |
| Hodgdon H414 | <<locked>> | 86% | 55,332 psi | 87% | 2936 fps | 99.7% |
| Hodgdon H4350 | <<locked>> | 84% | 54,650 psi | 86% | 2897 fps | 99.1% |
| Hodgdon H4831 | <<locked>> | 94% | 55,927 psi | 88% | 2936 fps | 97.6% |
| Hodgdon H4831 SC | <<locked>> | 94% | 54,810 psi | 86% | 2917 fps | 97.4% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 54,897 psi | 86% | 2867 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 51,126 psi | 80% | 3022 fps | 99.3% |
| Hodgdon Superformance | <<locked>> | 86% | 55,709 psi | 87% | 2972 fps | 99.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,941 psi | 58% | 1824 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 54,476 psi | 85% | 2874 fps | 99.4% |
| IMR 4451 Enduron | <<locked>> | 84% | 54,418 psi | 85% | 2858 fps | 99.6% |
| IMR 4831 | <<locked>> | 90% | 57,609 psi | 90% | 2930 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 57,000 psi | 89% | 2920 fps | 97.9% |
| IMR 7828 SSC | <<locked>> | 98% | 57,348 psi | 90% | 3031 fps | 98.5% |
| Lovex S065 | <<locked>> | 86% | 54,853 psi | 86% | 2858 fps | 100% |
| Lovex S070 | <<locked>> | 88% | 56,579 psi | 89% | 2904 fps | 99.8% |
| Lovex S071ᴾ | <<locked>> | 100% | 53,214 psi | 83% | 2864 fps | 99.9% |
| Norma 204 | <<locked>> | 88% | 55,114 psi | 86% | 2923 fps | 98.8% |
| Norma MRP | <<locked>> | 94% | 55,376 psi | 87% | 3012 fps | 99.8% |
| Norma URP | <<locked>> | 88% | 55,854 psi | 88% | 2927 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 53,983 psi | 85% | 2989 fps | 98.3% |
| Ramshot Hunter | <<locked>> | 88% | 54,549 psi | 85% | 2927 fps | 99.9% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 56,420 psi | 88% | 2986 fps | 99.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,666 psi | 59% | 1864 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 57,130 psi | 90% | 2897 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 55,056 psi | 86% | 2946 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 57,290 psi | 90% | 2963 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 55,622 psi | 87% | 2992 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 51,750 psi | 81% | 3022 fps | 99.8% |
| Rottweil R 903 | <<locked>> | 84% | 57,711 psi | 90% | 2890 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 55,811 psi | 87% | 2907 fps | 98.2% |
| Rottweil R 905 | <<locked>> | 94% | 56,985 psi | 89% | 2969 fps | 99.3% |
| Rottweil R 907 | <<locked>> | 86% | 56,449 psi | 88% | 2890 fps | 99.6% |
| Shooters World Long Rifle | <<locked>> | 86% | 54,853 psi | 86% | 2858 fps | 100% |
| Shooters World SW4350 | <<locked>> | 88% | 56,579 psi | 89% | 2904 fps | 99.8% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 55,550 psi | 87% | 2897 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 57,740 psi | 90% | 2766 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 54,143 psi | 85% | 2808 fps | 99.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 56,536 psi | 89% | 2966 fps | 99.2% |
| Somchem S355 | <<locked>> | 84% | 57,261 psi | 90% | 2884 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 57,392 psi | 90% | 2900 fps | 97.8% |
| Somchem S365 | <<locked>> | 90% | 55,970 psi | 88% | 2927 fps | 100% |
| Somchem S385 | <<locked>> | 94% | 57,667 psi | 90% | 2946 fps | 99.7% |
| Vihtavuori N150 | <<locked>> | 84% | 55,100 psi | 86% | 2808 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 57,551 psi | 90% | 2913 fps | 100% |
| Vihtavuori N165 | <<locked>> | 98% | 56,985 psi | 89% | 2920 fps | 99.5% |
| Vihtavuori N550 | <<locked>> | 88% | 56,724 psi | 89% | 2920 fps | 100% |
| Vihtavuori N555 | <<locked>> | 94% | 55,361 psi | 87% | 2943 fps | 100% |
| Vihtavuori N560 | <<locked>> | 94% | 55,288 psi | 87% | 3005 fps | 97.8% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 54,824 psi | 86% | 2979 fps | 97.9% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 57,261 psi | 90% | 2877 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 55,564 psi | 87% | 2940 fps | 99.8% |
| Winchester StaBALL HD | <<locked>> | 98% | 53,751 psi | 84% | 3045 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 57,711 psi | 90% | 2940 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 3100 | <<locked>> | 80% | 32,445 psi | 51% | 2451 fps | 95.7% |
| Accurate 4350 | <<locked>> | 80% | 43,685 psi | 68% | 2713 fps | 99.7% |
| Accurate MAGPRO | <<locked>> | 90% | 47,123 psi | 74% | 2858 fps | 95.1% |
| ADI AR 2208 | <<locked>> | 80% | 51,851 psi | 81% | 2799 fps | 100% |
| ADI AR 2209 | <<locked>> | 82% | 39,044 psi | 61% | 2638 fps | 95.2% |
| ADI AR 2213 | 75.3 gr | 90% | 45,513 psi | 71% | 2805 fps | 95.8% |
| ADI AR 2217 | <<locked>> | 98% | 43,569 psi | 68% | 2756 fps | 95.4% |
| ADI AR 2225 | <<locked>> | 94% | 34,156 psi | 54% | 2589 fps | 95.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 52,866 psi | 83% | 2822 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 41,916 psi | 66% | 2720 fps | 99.8% |
| Alliant Reloder-17 | <<locked>> | 80% | 48,341 psi | 76% | 2844 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 82% | 39,044 psi | 61% | 2635 fps | 95.3% |
| Alliant Reloder-22 | <<locked>> | 86% | 39,740 psi | 62% | 2690 fps | 95.6% |
| Alliant Reloder-23 | <<locked>> | 80% | 31,212 psi | 49% | 2480 fps | 98.7% |
| Alliant Reloder-25 | <<locked>> | 84% | 31,096 psi | 49% | 2497 fps | 95.7% |
| Alliant Reloder-26 | <<locked>> | 80% | 33,852 psi | 53% | 2608 fps | 97.7% |
| Bofors RP15 | <<locked>> | 88% | 39,392 psi | 62% | 2680 fps | 95.3% |
| Bofors RP3 | <<locked>> | 80% | 53,708 psi | 84% | 2838 fps | 100% |
| Bofors RP30 | <<locked>> | 96% | 42,134 psi | 66% | 2772 fps | 95.6% |
| Bofors RP5 | <<locked>> | 86% | 39,740 psi | 62% | 2690 fps | 95.6% |
| Bofors RP7 | <<locked>> | 80% | 46,731 psi | 73% | 2723 fps | 98.3% |
| Hodgdon H1000 | <<locked>> | 94% | 41,945 psi | 66% | 2726 fps | 95.6% |
| Hodgdon H380 | <<locked>> | 80% | 53,940 psi | 85% | 2858 fps | 100% |
| Hodgdon H414 | <<locked>> | 80% | 45,498 psi | 71% | 2766 fps | 98.6% |
| Hodgdon H4350 | <<locked>> | 80% | 47,964 psi | 75% | 2779 fps | 98% |
| Hodgdon H4831 | <<locked>> | 88% | 45,513 psi | 71% | 2753 fps | 95.1% |
| Hodgdon H4831 SC | <<locked>> | 90% | 47,790 psi | 75% | 2795 fps | 95.8% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 39,610 psi | 62% | 2612 fps | 99.9% |
| Hodgdon Retumbo | <<locked>> | 92% | 39,349 psi | 62% | 2762 fps | 96.1% |
| Hodgdon Superformance | <<locked>> | 80% | 44,672 psi | 70% | 2782 fps | 98.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,630 psi | 43% | 1627 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 42,322 psi | 66% | 2651 fps | 97.4% |
| IMR 4451 Enduron | <<locked>> | 80% | 48,037 psi | 75% | 2749 fps | 98.9% |
| IMR 4831 | <<locked>> | 80% | 41,684 psi | 65% | 2661 fps | 99.6% |
| IMR 4955 Enduron | <<locked>> | 86% | 44,353 psi | 70% | 2694 fps | 95% |
| IMR 7828 SSC | <<locked>> | 90% | 43,671 psi | 68% | 2779 fps | 95.3% |
| Lovex S065 | <<locked>> | 80% | 45,687 psi | 72% | 2700 fps | 99.4% |
| Lovex S070 | <<locked>> | 80% | 43,961 psi | 69% | 2684 fps | 98.4% |
| Lovex S071 | <<locked>> | 84% | 31,923 psi | 50% | 2434 fps | 95.5% |
| Norma 204 | <<locked>> | 80% | 42,076 psi | 66% | 2680 fps | 96% |
| Norma MRP | 70.8 gr | 82% | 36,187 psi | 57% | 2635 fps | 95.9% |
| Norma URP | <<locked>> | 80% | 42,989 psi | 67% | 2703 fps | 99.6% |
| Ramshot Grand | <<locked>> | 90% | 43,555 psi | 68% | 2789 fps | 95.7% |
| Ramshot Hunter | <<locked>> | 80% | 41,843 psi | 66% | 2697 fps | 98.5% |
| Ramshot Magnum | <<locked>> | 88% | 36,172 psi | 57% | 2602 fps | 95.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,181 psi | 44% | 1667 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 53,621 psi | 84% | 2844 fps | 99.8% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 51,300 psi | 80% | 2890 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 43,598 psi | 68% | 2733 fps | 99.6% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 41,771 psi | 65% | 2746 fps | 99.4% |
| ReloadSwiss RS 76 | <<locked>> | 90% | 36,158 psi | 57% | 2674 fps | 96% |
| Rottweil R 903 | <<locked>> | 80% | 50,691 psi | 79% | 2789 fps | 100% |
| Rottweil R 904 | <<locked>> | 84% | 43,279 psi | 68% | 2680 fps | 95.4% |
| Rottweil R 905 | <<locked>> | 82% | 38,348 psi | 60% | 2618 fps | 95.2% |
| Rottweil R 907 | <<locked>> | 80% | 46,731 psi | 73% | 2723 fps | 98.3% |
| Shooters World Long Rifle | <<locked>> | 80% | 45,687 psi | 72% | 2700 fps | 99.4% |
| Shooters World SW4350 | <<locked>> | 80% | 43,961 psi | 69% | 2684 fps | 98.4% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 51,996 psi | 81% | 2841 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 50,966 psi | 80% | 2671 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 44,773 psi | 70% | 2644 fps | 98.4% |
| SNPE Vectan Tubal 8000 | <<locked>> | 82% | 38,000 psi | 60% | 2615 fps | 95.1% |
| Somchem S355 | <<locked>> | 80% | 50,633 psi | 79% | 2782 fps | 100% |
| Somchem S361 | <<locked>> | 86% | 47,050 psi | 74% | 2726 fps | 95.6% |
| Somchem S365 | <<locked>> | 80% | 39,871 psi | 62% | 2661 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 36,332 psi | 57% | 2543 fps | 95.4% |
| Vihtavuori N150 | <<locked>> | 80% | 48,443 psi | 76% | 2707 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 44,382 psi | 70% | 2700 fps | 99.7% |
| Vihtavuori N165 | <<locked>> | 86% | 38,450 psi | 60% | 2585 fps | 95.8% |
| Vihtavuori N550 | <<locked>> | 80% | 43,859 psi | 69% | 2703 fps | 99.6% |
| Vihtavuori N555 | <<locked>> | 80% | 34,925 psi | 55% | 2559 fps | 98.7% |
| Vihtavuori N560 | 76 gr | 88% | 44,918 psi | 70% | 2815 fps | 95.2% |
| Vihtavuori N565 | <<locked>> | 94% | 44,686 psi | 70% | 2795 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 43,497 psi | 68% | 2664 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 45,498 psi | 71% | 2766 fps | 98.6% |
| Winchester StaBALL HD | <<locked>> | 80% | 27,688 psi | 43% | 2477 fps | 98.5% |
| Winchester Supreme 780 | <<locked>> | 86% | 40,799 psi | 64% | 2644 fps | 95.9% |
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 76 powders for .300 Weath. Mag. loaded with the .311 | 180gr | Norma Semi Soft Point. Alliant Reloder-26 delivers the highest muzzle velocity at 3,061 fps; across all powders the maximum-charge window runs from 1,824 fps to 3,061 fps. ADI AR 2217 gives the best case fill at 100 %, and 76 of the 76 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 180.0 gr projectile in 0.311" calls for a 1:14.5 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, ADI AR 2213 rank at the top here: for .300 Weath. Mag. with the .311 | 180gr | Norma Semi Soft Point 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.