Load Specifications
Load data in caliber .300 Norma Mag. with .311 | 180gr | Norma Semi Soft Point bullet and 74 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Hodgdon Retumbo, Accurate MAGPRO and Ramshot Grand.
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% | 56,782 psi | 89% | 2946 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 54,244 psi | 85% | 2923 fps | 100% |
| Accurate High Country | <<locked>> | 90% | 54,433 psi | 85% | 3038 fps | 98.6% |
| Accurate MAGPRO | <<locked>> | 92% | 55,405 psi | 87% | 3041 fps | 97.8% |
| ADI AR 2209 | <<locked>> | 90% | 54,984 psi | 86% | 2982 fps | 99.3% |
| ADI AR 2213 | <<locked>> | 94% | 56,521 psi | 89% | 3045 fps | 98.8% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 50,792 psi | 80% | 2940 fps | 98.2% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 45,513 psi | 71% | 2900 fps | 99.5% |
| Alliant Power Pro Varmint | <<locked>> | 90% | 55,347 psi | 87% | 2979 fps | 99.3% |
| Alliant Reloder-16 | <<locked>> | 86% | 55,201 psi | 87% | 2982 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 82% | 56,217 psi | 88% | 2992 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 90% | 54,708 psi | 86% | 2972 fps | 99.3% |
| Alliant Reloder-22 | <<locked>> | 94% | 56,608 psi | 89% | 3038 fps | 99.6% |
| Alliant Reloder-23 | <<locked>> | 94% | 54,273 psi | 85% | 2956 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 57,406 psi | 90% | 3074 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 90% | 54,607 psi | 86% | 3045 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 94% | 54,665 psi | 86% | 2943 fps | 95.8% |
| Bofors RP15 | <<locked>> | 96% | 55,767 psi | 87% | 3025 fps | 99.4% |
| Bofors RP30ᴾ | <<locked>> | 100% | 53,417 psi | 84% | 3012 fps | 98.8% |
| Bofors RP5 | <<locked>> | 94% | 56,608 psi | 89% | 3038 fps | 99.6% |
| Bofors RP7 | <<locked>> | 84% | 56,333 psi | 88% | 2923 fps | 99.8% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 55,999 psi | 88% | 3031 fps | 99.4% |
| Hodgdon H414 | <<locked>> | 84% | 55,912 psi | 88% | 2979 fps | 99.9% |
| Hodgdon H4350 | <<locked>> | 82% | 54,723 psi | 86% | 2933 fps | 99.4% |
| Hodgdon H4831 | <<locked>> | 92% | 56,492 psi | 89% | 2982 fps | 98.3% |
| Hodgdon H4831 SC | <<locked>> | 92% | 55,245 psi | 87% | 2963 fps | 98.1% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 55,405 psi | 87% | 2904 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 56,333 psi | 88% | 3150 fps | 100% |
| Hodgdon Superformance | <<locked>> | 84% | 56,507 psi | 89% | 3018 fps | 99.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,159 psi | 58% | 1864 fps | 100% |
| IMR 4350 | <<locked>> | 86% | 54,650 psi | 86% | 2913 fps | 99.7% |
| IMR 4451 Enduron | <<locked>> | 82% | 54,418 psi | 85% | 2894 fps | 99.8% |
| IMR 4831 | <<locked>> | 86% | 54,650 psi | 86% | 2917 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 57,319 psi | 90% | 2966 fps | 98.5% |
| IMR 7828 SSC | <<locked>> | 94% | 54,534 psi | 85% | 3022 fps | 98.6% |
| Lovex S065 | <<locked>> | 84% | 55,085 psi | 86% | 2894 fps | 100% |
| Lovex S070 | <<locked>> | 86% | 56,869 psi | 89% | 2943 fps | 100% |
| Lovex S071 | <<locked>> | 98% | 54,288 psi | 85% | 2910 fps | 100% |
| Norma 204 | <<locked>> | 86% | 55,564 psi | 87% | 2966 fps | 99.2% |
| Norma 217ᴾ | <<locked>> | 100% | 41,060 psi | 64% | 2822 fps | 98% |
| Norma MRP | <<locked>> | 92% | 56,608 psi | 89% | 3061 fps | 100% |
| Norma URP | <<locked>> | 86% | 56,333 psi | 88% | 2963 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 55,143 psi | 86% | 3041 fps | 99% |
| Ramshot Hunter | <<locked>> | 86% | 55,172 psi | 86% | 2969 fps | 100% |
| Ramshot Magnum | <<locked>> | 96% | 53,447 psi | 84% | 2972 fps | 99.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,043 psi | 60% | 1909 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 54,273 psi | 85% | 2946 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 56,478 psi | 89% | 3031 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 57,145 psi | 90% | 3146 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 51,996 psi | 81% | 3025 fps | 97.4% |
| Rottweil R 904 | <<locked>> | 90% | 56,130 psi | 88% | 2949 fps | 98.7% |
| Rottweil R 905 | <<locked>> | 90% | 54,230 psi | 85% | 2963 fps | 99.3% |
| Rottweil R 907 | <<locked>> | 84% | 56,333 psi | 88% | 2923 fps | 99.8% |
| Shooters World Long Rifle | <<locked>> | 84% | 55,085 psi | 86% | 2894 fps | 100% |
| Shooters World SW4350 | <<locked>> | 86% | 56,869 psi | 89% | 2943 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 57,493 psi | 90% | 2792 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 54,244 psi | 85% | 2844 fps | 99.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 57,377 psi | 90% | 3012 fps | 99.6% |
| Somchem S355 | <<locked>> | 82% | 57,319 psi | 90% | 2917 fps | 100% |
| Somchem S361 | <<locked>> | 88% | 54,099 psi | 85% | 2884 fps | 97.8% |
| Somchem S365 | <<locked>> | 88% | 57,029 psi | 89% | 2966 fps | 100% |
| Somchem S385 | <<locked>> | 90% | 54,621 psi | 86% | 2930 fps | 99.7% |
| Vihtavuori N150 | <<locked>> | 82% | 55,042 psi | 86% | 2838 fps | 100% |
| Vihtavuori N160 | <<locked>> | 84% | 54,418 psi | 85% | 2900 fps | 100% |
| Vihtavuori N165 | <<locked>> | 94% | 54,215 psi | 85% | 2913 fps | 99.5% |
| Vihtavuori N550 | <<locked>> | 86% | 57,290 psi | 90% | 2959 fps | 100% |
| Vihtavuori N555 | <<locked>> | 92% | 56,434 psi | 88% | 2982 fps | 100% |
| Vihtavuori N560 | <<locked>> | 92% | 56,376 psi | 88% | 3058 fps | 98.5% |
| Vihtavuori N565 | <<locked>> | 98% | 56,405 psi | 88% | 3038 fps | 98.6% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 53,026 psi | 83% | 3028 fps | 97% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 57,566 psi | 90% | 2907 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 56,115 psi | 88% | 2982 fps | 99.9% |
| Winchester StaBALL HD | <<locked>> | 96% | 56,217 psi | 88% | 3094 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 54,476 psi | 85% | 2927 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% | 35,505 psi | 56% | 2552 fps | 97.5% |
| Accurate 4350 | <<locked>> | 80% | 47,456 psi | 74% | 2812 fps | 100% |
| Accurate High Country | <<locked>> | 82% | 41,205 psi | 65% | 2776 fps | 95.4% |
| Accurate MAGPRO | 81.4 gr | 86% | 44,788 psi | 70% | 2844 fps | 95.2% |
| ADI AR 2209 | <<locked>> | 80% | 39,450 psi | 62% | 2680 fps | 96% |
| ADI AR 2213 | <<locked>> | 86% | 43,062 psi | 67% | 2789 fps | 95.8% |
| ADI AR 2217 | <<locked>> | 94% | 41,510 psi | 65% | 2749 fps | 95.6% |
| ADI AR 2225 | <<locked>> | 90% | 32,779 psi | 51% | 2582 fps | 95.3% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 39,885 psi | 63% | 2684 fps | 96.2% |
| Alliant Reloder-16 | <<locked>> | 80% | 45,281 psi | 71% | 2815 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 80% | 52,344 psi | 82% | 2933 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 39,523 psi | 62% | 2677 fps | 96.1% |
| Alliant Reloder-22 | <<locked>> | 82% | 37,768 psi | 59% | 2671 fps | 95.6% |
| Alliant Reloder-23 | <<locked>> | 80% | 33,997 psi | 53% | 2579 fps | 99.6% |
| Alliant Reloder-25 | <<locked>> | 80% | 29,617 psi | 46% | 2480 fps | 95.7% |
| Alliant Reloder-26 | <<locked>> | 80% | 37,376 psi | 59% | 2720 fps | 99.1% |
| Baschieri & Pellagri 109 | <<locked>> | 92% | 51,343 psi | 80% | 2884 fps | 95% |
| Bofors RP15 | <<locked>> | 84% | 37,579 psi | 59% | 2664 fps | 95.3% |
| Bofors RP30 | <<locked>> | 92% | 40,524 psi | 64% | 2762 fps | 95.7% |
| Bofors RP5 | <<locked>> | 82% | 37,768 psi | 59% | 2671 fps | 95.6% |
| Bofors RP7 | <<locked>> | 80% | 49,705 psi | 78% | 2812 fps | 99.2% |
| Hodgdon H1000 | <<locked>> | 90% | 39,711 psi | 62% | 2713 fps | 95.7% |
| Hodgdon H414 | <<locked>> | 80% | 48,863 psi | 77% | 2858 fps | 99.4% |
| Hodgdon H4350 | <<locked>> | 80% | 51,314 psi | 80% | 2874 fps | 99% |
| Hodgdon H4831 | <<locked>> | 84% | 43,004 psi | 67% | 2736 fps | 95.1% |
| Hodgdon H4831 SC | <<locked>> | 86% | 45,150 psi | 71% | 2779 fps | 95.8% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 42,685 psi | 67% | 2697 fps | 100% |
| Hodgdon Retumbo | 77 gr | 86% | 35,157 psi | 55% | 2684 fps | 95% |
| Hodgdon Superformance | <<locked>> | 80% | 48,660 psi | 76% | 2887 fps | 99.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,847 psi | 44% | 1667 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 45,252 psi | 71% | 2743 fps | 98.5% |
| IMR 4451 Enduron | <<locked>> | 80% | 51,082 psi | 80% | 2838 fps | 99.6% |
| IMR 4831 | <<locked>> | 80% | 44,976 psi | 70% | 2756 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 82% | 41,800 psi | 66% | 2674 fps | 95% |
| IMR 7828 SSC | <<locked>> | 86% | 41,437 psi | 65% | 2766 fps | 95.3% |
| Lovex S065 | <<locked>> | 80% | 48,689 psi | 76% | 2785 fps | 99.9% |
| Lovex S070 | <<locked>> | 80% | 47,094 psi | 74% | 2779 fps | 99.3% |
| Lovex S071 | <<locked>> | 80% | 30,574 psi | 48% | 2425 fps | 95.5% |
| Norma 204 | <<locked>> | 80% | 45,339 psi | 71% | 2782 fps | 97.5% |
| Norma 217 | <<locked>> | 94% | 33,678 psi | 53% | 2635 fps | 95.2% |
| Norma MRP | <<locked>> | 80% | 37,057 psi | 58% | 2680 fps | 96.8% |
| Norma URP | <<locked>> | 80% | 46,383 psi | 73% | 2795 fps | 100% |
| Ramshot Grand | 79.3 gr | 86% | 41,350 psi | 65% | 2779 fps | 95.8% |
| Ramshot Hunter | <<locked>> | 80% | 45,223 psi | 71% | 2792 fps | 99.4% |
| Ramshot Magnum | <<locked>> | 84% | 34,374 psi | 54% | 2585 fps | 95.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,529 psi | 45% | 1706 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 47,384 psi | 74% | 2831 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 45,469 psi | 71% | 2848 fps | 99.9% |
| ReloadSwiss RS 76 | <<locked>> | 86% | 34,360 psi | 54% | 2661 fps | 96% |
| ReloadSwiss RS 80 | <<locked>> | 96% | 44,759 psi | 70% | 2887 fps | 95.4% |
| Rottweil R 904 | <<locked>> | 80% | 40,654 psi | 64% | 2657 fps | 95.2% |
| Rottweil R 905 | <<locked>> | 80% | 38,769 psi | 61% | 2657 fps | 96% |
| Rottweil R 907 | <<locked>> | 80% | 49,705 psi | 78% | 2812 fps | 99.2% |
| Shooters World Long Rifle | <<locked>> | 80% | 48,689 psi | 76% | 2785 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 80% | 47,094 psi | 74% | 2779 fps | 99.3% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 54,041 psi | 85% | 2746 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 47,616 psi | 75% | 2733 fps | 99.3% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 38,479 psi | 60% | 2654 fps | 95.9% |
| Somchem S355 | <<locked>> | 80% | 53,940 psi | 85% | 2864 fps | 100% |
| Somchem S361 | <<locked>> | 82% | 44,324 psi | 69% | 2707 fps | 95.5% |
| Somchem S365 | <<locked>> | 80% | 43,468 psi | 68% | 2753 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 39,349 psi | 62% | 2644 fps | 97.1% |
| Vihtavuori N150 | <<locked>> | 80% | 51,721 psi | 81% | 2789 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 47,834 psi | 75% | 2792 fps | 100% |
| Vihtavuori N165 | <<locked>> | 82% | 36,463 psi | 57% | 2569 fps | 95.8% |
| Vihtavuori N550 | <<locked>> | 80% | 47,108 psi | 74% | 2792 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 38,232 psi | 60% | 2657 fps | 99.6% |
| Vihtavuori N560 | <<locked>> | 84% | 42,757 psi | 67% | 2799 fps | 95.2% |
| Vihtavuori N565 | <<locked>> | 90% | 42,844 psi | 67% | 2785 fps | 95.6% |
| Vihtavuori N568 | <<locked>> | 96% | 46,035 psi | 72% | 2897 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 46,905 psi | 74% | 2749 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 49,052 psi | 77% | 2861 fps | 99.4% |
| Winchester StaBALL HD | <<locked>> | 80% | 30,313 psi | 48% | 2595 fps | 99.8% |
| Winchester Supreme 780 | <<locked>> | 82% | 38,551 psi | 60% | 2625 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 74 powders for .300 Norma Mag. loaded with the .311 | 180gr | Norma Semi Soft Point. Hodgdon Retumbo delivers the highest muzzle velocity at 3,150 fps; across all powders the maximum-charge window runs from 1,864 fps to 3,150 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 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. Hodgdon Retumbo, Accurate MAGPRO, Ramshot Grand rank at the top here: for .300 Norma 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.