Load Specifications
Load data in caliber .300 Norma Mag. with .311 | 190gr | Prvi Partizan FMJ BT bullet and 69 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Hodgdon Retumbo, ReloadSwiss RS 76 and Winchester StaBALL HD.
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>> | 90% | 54,447 psi | 85% | 2848 fps | 100% |
| Accurate 4350 | <<locked>> | 82% | 55,245 psi | 87% | 2871 fps | 100% |
| Accurate MAGPRO | <<locked>> | 90% | 56,826 psi | 89% | 3002 fps | 98.7% |
| ADI AR 2209 | <<locked>> | 88% | 56,014 psi | 88% | 2933 fps | 99.7% |
| ADI AR 2213 | <<locked>> | 90% | 53,998 psi | 85% | 2940 fps | 99% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 55,782 psi | 87% | 2969 fps | 99.5% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 50,212 psi | 79% | 2927 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 84% | 56,260 psi | 88% | 2927 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 88% | 55,521 psi | 87% | 2923 fps | 99.7% |
| Alliant Reloder-22 | <<locked>> | 90% | 54,360 psi | 85% | 2936 fps | 99.7% |
| Alliant Reloder-23 | <<locked>> | 92% | 55,912 psi | 88% | 2907 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 96% | 55,434 psi | 87% | 2972 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 88% | 56,362 psi | 88% | 2992 fps | 100% |
| Alliant Reloder-33ᴾ | <<locked>> | 100% | 52,895 psi | 83% | 2982 fps | 96.3% |
| Baschieri & Pellagri 109 | <<locked>> | 92% | 55,129 psi | 86% | 2900 fps | 96.9% |
| Bofors RP15 | <<locked>> | 94% | 57,101 psi | 89% | 2982 fps | 99.8% |
| Bofors RP30 | <<locked>> | 98% | 55,347 psi | 87% | 2979 fps | 99.5% |
| Bofors RP5 | <<locked>> | 90% | 54,360 psi | 85% | 2936 fps | 99.7% |
| Bofors RP7 | <<locked>> | 82% | 56,753 psi | 89% | 2871 fps | 100% |
| Hodgdon H1000 | <<locked>> | 98% | 57,609 psi | 90% | 2995 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 82% | 56,478 psi | 89% | 2923 fps | 100% |
| Hodgdon H4831 | <<locked>> | 90% | 57,290 psi | 90% | 2936 fps | 99% |
| Hodgdon H4831 SC | <<locked>> | 90% | 56,231 psi | 88% | 2920 fps | 98.8% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 56,478 psi | 89% | 2851 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 96% | 54,404 psi | 85% | 3048 fps | 100% |
| Hodgdon Superformance | <<locked>> | 82% | 57,232 psi | 90% | 2963 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,420 psi | 59% | 1837 fps | 100% |
| IMR 4350 | <<locked>> | 84% | 55,143 psi | 86% | 2858 fps | 99.9% |
| IMR 4831 | <<locked>> | 84% | 55,492 psi | 87% | 2861 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 88% | 54,476 psi | 85% | 2861 fps | 98.7% |
| IMR 7828 SSC | <<locked>> | 92% | 55,927 psi | 88% | 2982 fps | 99.3% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 45,803 psi | 72% | 2831 fps | 97.9% |
| Lovex S065 | <<locked>> | 82% | 55,463 psi | 87% | 2838 fps | 100% |
| Lovex S070 | <<locked>> | 84% | 57,406 psi | 90% | 2890 fps | 100% |
| Lovex S071 | <<locked>> | 96% | 55,825 psi | 87% | 2871 fps | 100% |
| Norma 204 | <<locked>> | 84% | 56,260 psi | 88% | 2917 fps | 99.7% |
| Norma 217ᴾ | <<locked>> | 100% | 46,340 psi | 73% | 2861 fps | 99.5% |
| Norma MRP | <<locked>> | 88% | 54,288 psi | 85% | 2956 fps | 100% |
| Norma URP | <<locked>> | 84% | 57,145 psi | 90% | 2907 fps | 100% |
| Ramshot Grand | <<locked>> | 92% | 56,927 psi | 89% | 3005 fps | 99.6% |
| Ramshot Hunter | <<locked>> | 84% | 56,072 psi | 88% | 2913 fps | 100% |
| Ramshot Magnum | <<locked>> | 94% | 55,259 psi | 87% | 2933 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,319 psi | 60% | 1880 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 55,259 psi | 87% | 2894 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 84% | 57,624 psi | 90% | 2979 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 96% | 55,085 psi | 86% | 3041 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 98% | 54,418 psi | 85% | 2999 fps | 98.5% |
| Rottweil R 904 | <<locked>> | 88% | 56,869 psi | 89% | 2904 fps | 99.3% |
| Rottweil R 905 | <<locked>> | 88% | 55,216 psi | 87% | 2913 fps | 99.7% |
| Rottweil R 907 | <<locked>> | 82% | 56,753 psi | 89% | 2871 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 82% | 55,463 psi | 87% | 2838 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 57,406 psi | 90% | 2890 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 54,389 psi | 85% | 2792 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 88% | 54,810 psi | 86% | 2910 fps | 99.7% |
| Somchem S361 | <<locked>> | 86% | 54,694 psi | 86% | 2838 fps | 98.6% |
| Somchem S365 | <<locked>> | 84% | 54,447 psi | 85% | 2858 fps | 100% |
| Somchem S385 | <<locked>> | 88% | 55,608 psi | 87% | 2884 fps | 99.9% |
| Vihtavuori N160 | <<locked>> | 82% | 55,129 psi | 86% | 2844 fps | 100% |
| Vihtavuori N165 | <<locked>> | 92% | 55,288 psi | 87% | 2867 fps | 99.9% |
| Vihtavuori N550 | <<locked>> | 82% | 54,288 psi | 85% | 2848 fps | 100% |
| Vihtavuori N555 | <<locked>> | 88% | 54,375 psi | 85% | 2881 fps | 100% |
| Vihtavuori N560 | <<locked>> | 90% | 57,740 psi | 90% | 3015 fps | 99.2% |
| Vihtavuori N565 | <<locked>> | 94% | 54,186 psi | 85% | 2940 fps | 98.9% |
| Vihtavuori N568 | <<locked>> | 98% | 55,100 psi | 86% | 2999 fps | 98.2% |
| Vihtavuori N570ᴾ | <<locked>> | 100% | 56,188 psi | 88% | 3061 fps | 96.7% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 54,317 psi | 85% | 2795 fps | 100% |
| Winchester 760 | <<locked>> | 82% | 56,666 psi | 89% | 2927 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 92% | 54,723 psi | 86% | 2992 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 90% | 55,448 psi | 87% | 2881 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% | 38,885 psi | 61% | 2569 fps | 98.9% |
| Accurate 4350 | <<locked>> | 80% | 51,532 psi | 81% | 2815 fps | 100% |
| Accurate MAGPRO | <<locked>> | 82% | 42,989 psi | 67% | 2743 fps | 95.5% |
| ADI AR 2209 | <<locked>> | 80% | 42,844 psi | 67% | 2694 fps | 97.8% |
| ADI AR 2213 | <<locked>> | 80% | 38,290 psi | 60% | 2625 fps | 95.1% |
| ADI AR 2217 | <<locked>> | 88% | 37,202 psi | 58% | 2598 fps | 95% |
| ADI AR 2225 | <<locked>> | 86% | 31,633 psi | 50% | 2500 fps | 95.9% |
| Alliant Reloder-16 | <<locked>> | 80% | 49,356 psi | 77% | 2818 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 42,873 psi | 67% | 2690 fps | 97.8% |
| Alliant Reloder-22 | <<locked>> | 80% | 38,769 psi | 61% | 2635 fps | 96.8% |
| Alliant Reloder-23 | <<locked>> | 80% | 37,550 psi | 59% | 2592 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 32,416 psi | 51% | 2510 fps | 98% |
| Alliant Reloder-26 | <<locked>> | 80% | 41,858 psi | 66% | 2746 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 98% | 49,081 psi | 77% | 2913 fps | 95.2% |
| Baschieri & Pellagri 109 | <<locked>> | 88% | 48,704 psi | 76% | 2785 fps | 95.3% |
| Bofors RP15 | <<locked>> | 80% | 36,129 psi | 57% | 2572 fps | 95.7% |
| Bofors RP30 | <<locked>> | 86% | 36,825 psi | 58% | 2615 fps | 95.2% |
| Bofors RP5 | <<locked>> | 80% | 38,769 psi | 61% | 2635 fps | 96.8% |
| Bofors RP7 | <<locked>> | 80% | 53,200 psi | 83% | 2812 fps | 99.8% |
| Hodgdon H1000 | <<locked>> | 84% | 35,520 psi | 56% | 2559 fps | 95% |
| Hodgdon H414 | <<locked>> | 80% | 52,881 psi | 83% | 2864 fps | 100% |
| Hodgdon H4831 | <<locked>> | 80% | 40,828 psi | 64% | 2631 fps | 95.4% |
| Hodgdon H4831 SC | <<locked>> | 80% | 40,118 psi | 63% | 2615 fps | 95.1% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 46,456 psi | 73% | 2697 fps | 100% |
| Hodgdon Retumbo | 76.4 gr | 82% | 33,895 psi | 53% | 2595 fps | 95.5% |
| Hodgdon Superformance | <<locked>> | 80% | 53,272 psi | 83% | 2900 fps | 99.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,137 psi | 44% | 1640 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 48,602 psi | 76% | 2749 fps | 99.5% |
| IMR 4831 | <<locked>> | 80% | 48,733 psi | 76% | 2756 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 42,250 psi | 66% | 2631 fps | 96.1% |
| IMR 7828 SSC | <<locked>> | 82% | 39,653 psi | 62% | 2671 fps | 95.7% |
| IMR 8133 Enduron | <<locked>> | 94% | 37,420 psi | 59% | 2651 fps | 95.2% |
| Lovex S065 | <<locked>> | 80% | 52,185 psi | 82% | 2785 fps | 100% |
| Lovex S070 | <<locked>> | 80% | 50,575 psi | 79% | 2779 fps | 99.9% |
| Lovex S071 | <<locked>> | 80% | 33,576 psi | 53% | 2444 fps | 97.5% |
| Norma 204 | <<locked>> | 80% | 49,023 psi | 77% | 2792 fps | 98.9% |
| Norma 217 | <<locked>> | 90% | 32,851 psi | 51% | 2556 fps | 95.8% |
| Norma MRP | <<locked>> | 80% | 40,857 psi | 64% | 2707 fps | 98.6% |
| Norma URP | <<locked>> | 80% | 50,169 psi | 79% | 2799 fps | 100% |
| Ramshot Grand | <<locked>> | 80% | 36,695 psi | 57% | 2612 fps | 95% |
| Ramshot Hunter | <<locked>> | 80% | 48,994 psi | 77% | 2799 fps | 100% |
| Ramshot Magnum | <<locked>> | 80% | 32,793 psi | 51% | 2490 fps | 95.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,863 psi | 45% | 1683 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 51,706 psi | 81% | 2838 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 49,806 psi | 78% | 2858 fps | 100% |
| ReloadSwiss RS 76 | 79.7 gr | 80% | 30,661 psi | 48% | 2497 fps | 95% |
| ReloadSwiss RS 80 | <<locked>> | 92% | 43,294 psi | 68% | 2792 fps | 95.8% |
| Rottweil R 904 | <<locked>> | 80% | 44,034 psi | 69% | 2674 fps | 97.1% |
| Rottweil R 905 | <<locked>> | 80% | 42,264 psi | 66% | 2677 fps | 97.9% |
| Rottweil R 907 | <<locked>> | 80% | 53,200 psi | 83% | 2812 fps | 99.8% |
| Shooters World Long Rifle | <<locked>> | 80% | 52,185 psi | 82% | 2785 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 50,575 psi | 79% | 2779 fps | 99.9% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 51,126 psi | 80% | 2736 fps | 99.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 41,930 psi | 66% | 2671 fps | 97.7% |
| Somchem S361 | <<locked>> | 80% | 44,715 psi | 70% | 2661 fps | 96.6% |
| Somchem S365 | <<locked>> | 80% | 47,587 psi | 75% | 2753 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 42,801 psi | 67% | 2657 fps | 98.6% |
| Vihtavuori N160 | <<locked>> | 80% | 51,605 psi | 81% | 2789 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 37,260 psi | 58% | 2533 fps | 96.9% |
| Vihtavuori N550 | <<locked>> | 80% | 50,879 psi | 80% | 2792 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 41,974 psi | 66% | 2671 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 40,785 psi | 64% | 2694 fps | 95.5% |
| Vihtavuori N565 | <<locked>> | 84% | 38,638 psi | 61% | 2631 fps | 95% |
| Vihtavuori N568 | <<locked>> | 92% | 44,527 psi | 70% | 2805 fps | 95.6% |
| Vihtavuori N570 | <<locked>> | 98% | 52,170 psi | 82% | 2989 fps | 95.7% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 50,734 psi | 80% | 2743 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 53,084 psi | 83% | 2867 fps | 100% |
| Winchester StaBALL HD | 76.5 gr | 80% | 34,432 psi | 54% | 2628 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 39,276 psi | 62% | 2585 fps | 96.9% |
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 75 powders for .300 Norma Mag. loaded with the .311 | 190gr | Prvi Partizan FMJ BT. Vihtavuori N570 delivers the highest muzzle velocity at 3,061 fps; across all powders the maximum-charge window runs from 1,837 fps to 3,061 fps. ADI AR 2217 gives the best case fill at 100 %, and 75 of the 75 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 59–90 %, leaving at least 10 % headroom. The 190.0 gr projectile in 0.311" calls for a 1:13.0 twist; slower twists will usually not stabilise this weight. ADI AR 2217, ADI AR 2218, ADI AR 2225 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, ReloadSwiss RS 76, Winchester StaBALL HD rank at the top here: for .300 Norma Mag. with the .311 | 190gr | Prvi Partizan FMJ BT they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, ADI AR 2218, Alliant Reloder-50, IMR 7977 Enduron 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.