Load Specifications
Load data in caliber .300 Norma Mag. with .311 | 190gr | Winchester Silvertip 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 Vihtavuori N560.
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% | 54,897 psi | 86% | 2854 fps | 100% |
| Accurate 4350 | <<locked>> | 82% | 55,637 psi | 87% | 2877 fps | 100% |
| Accurate MAGPRO | <<locked>> | 90% | 57,493 psi | 90% | 3012 fps | 98.8% |
| ADI AR 2209 | <<locked>> | 88% | 56,507 psi | 89% | 2943 fps | 99.8% |
| ADI AR 2213 | <<locked>> | 90% | 54,447 psi | 85% | 2949 fps | 99.1% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 56,405 psi | 88% | 2979 fps | 99.6% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 50,778 psi | 80% | 2936 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 84% | 56,623 psi | 89% | 2933 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 88% | 55,985 psi | 88% | 2930 fps | 99.8% |
| Alliant Reloder-22 | <<locked>> | 90% | 54,839 psi | 86% | 2946 fps | 99.7% |
| Alliant Reloder-23 | <<locked>> | 92% | 56,463 psi | 88% | 2917 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 96% | 56,144 psi | 88% | 2982 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 88% | 57,087 psi | 89% | 3002 fps | 100% |
| Alliant Reloder-33ᴾ | <<locked>> | 100% | 53,650 psi | 84% | 2999 fps | 96.5% |
| Baschieri & Pellagri 109 | <<locked>> | 92% | 55,434 psi | 87% | 2910 fps | 97.1% |
| Bofors RP15 | <<locked>> | 92% | 54,056 psi | 85% | 2933 fps | 99.6% |
| Bofors RP30 | <<locked>> | 98% | 55,985 psi | 88% | 2989 fps | 99.6% |
| Bofors RP5 | <<locked>> | 90% | 54,839 psi | 86% | 2946 fps | 99.7% |
| Bofors RP7 | <<locked>> | 82% | 57,087 psi | 89% | 2877 fps | 100% |
| Hodgdon H1000 | <<locked>> | 96% | 54,244 psi | 85% | 2946 fps | 99.6% |
| Hodgdon H414 | <<locked>> | 82% | 57,014 psi | 89% | 2933 fps | 100% |
| Hodgdon H4831 | <<locked>> | 88% | 54,157 psi | 85% | 2887 fps | 98.6% |
| Hodgdon H4831 SC | <<locked>> | 90% | 56,710 psi | 89% | 2927 fps | 98.9% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 56,797 psi | 89% | 2858 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 96% | 55,085 psi | 86% | 3061 fps | 100% |
| Hodgdon Superformance | <<locked>> | 82% | 57,725 psi | 90% | 2969 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,507 psi | 59% | 1841 fps | 100% |
| IMR 4350 | <<locked>> | 84% | 55,637 psi | 87% | 2867 fps | 100% |
| IMR 4831 | <<locked>> | 84% | 55,999 psi | 88% | 2871 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 88% | 54,897 psi | 86% | 2871 fps | 98.8% |
| IMR 7828 SSC | <<locked>> | 92% | 56,449 psi | 88% | 2989 fps | 99.4% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 46,427 psi | 73% | 2844 fps | 98.1% |
| Lovex S065 | <<locked>> | 82% | 55,970 psi | 88% | 2844 fps | 100% |
| Lovex S070 | <<locked>> | 84% | 57,682 psi | 90% | 2894 fps | 100% |
| Lovex S071 | <<locked>> | 96% | 56,304 psi | 88% | 2877 fps | 100% |
| Norma 204 | <<locked>> | 84% | 56,550 psi | 89% | 2923 fps | 99.7% |
| Norma 217ᴾ | <<locked>> | 100% | 46,949 psi | 74% | 2871 fps | 99.6% |
| Norma MRP | <<locked>> | 88% | 54,810 psi | 86% | 2963 fps | 100% |
| Norma URP | <<locked>> | 84% | 57,508 psi | 90% | 2910 fps | 100% |
| Ramshot Grand | <<locked>> | 92% | 57,711 psi | 90% | 3015 fps | 99.7% |
| Ramshot Hunter | <<locked>> | 84% | 56,362 psi | 88% | 2920 fps | 100% |
| Ramshot Magnum | <<locked>> | 94% | 55,912 psi | 88% | 2943 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,406 psi | 60% | 1883 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 55,796 psi | 87% | 2904 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 82% | 54,143 psi | 85% | 2927 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 96% | 55,709 psi | 87% | 3054 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 98% | 54,998 psi | 86% | 3009 fps | 98.6% |
| Rottweil R 904 | <<locked>> | 88% | 57,348 psi | 90% | 2913 fps | 99.4% |
| Rottweil R 905 | <<locked>> | 88% | 55,724 psi | 87% | 2923 fps | 99.8% |
| Rottweil R 907 | <<locked>> | 82% | 57,087 psi | 89% | 2877 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 82% | 55,970 psi | 88% | 2844 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 57,682 psi | 90% | 2894 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 54,853 psi | 86% | 2799 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 88% | 55,317 psi | 87% | 2917 fps | 99.8% |
| Somchem S361 | <<locked>> | 86% | 55,114 psi | 86% | 2848 fps | 98.7% |
| Somchem S365 | <<locked>> | 84% | 55,056 psi | 86% | 2867 fps | 100% |
| Somchem S385 | <<locked>> | 88% | 56,057 psi | 88% | 2894 fps | 100% |
| Vihtavuori N160 | <<locked>> | 82% | 55,492 psi | 87% | 2851 fps | 100% |
| Vihtavuori N165 | <<locked>> | 92% | 55,898 psi | 88% | 2881 fps | 99.9% |
| Vihtavuori N550 | <<locked>> | 82% | 54,781 psi | 86% | 2858 fps | 100% |
| Vihtavuori N555 | <<locked>> | 88% | 54,868 psi | 86% | 2890 fps | 100% |
| Vihtavuori N560 | <<locked>> | 88% | 54,462 psi | 85% | 2963 fps | 98.8% |
| Vihtavuori N565 | <<locked>> | 94% | 54,839 psi | 86% | 2949 fps | 99% |
| Vihtavuori N568 | <<locked>> | 98% | 55,724 psi | 87% | 3012 fps | 98.3% |
| Vihtavuori N570ᴾ | <<locked>> | 100% | 56,811 psi | 89% | 3071 fps | 96.8% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 54,955 psi | 86% | 2805 fps | 100% |
| Winchester 760 | <<locked>> | 82% | 57,217 psi | 90% | 2936 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 92% | 55,506 psi | 87% | 3002 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 90% | 55,883 psi | 88% | 2890 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% | 39,349 psi | 62% | 2579 fps | 99% |
| Accurate 4350 | <<locked>> | 80% | 52,141 psi | 82% | 2825 fps | 100% |
| Accurate MAGPRO | <<locked>> | 82% | 43,453 psi | 68% | 2753 fps | 95.7% |
| ADI AR 2209 | <<locked>> | 80% | 43,163 psi | 68% | 2703 fps | 97.9% |
| ADI AR 2213 | <<locked>> | 80% | 38,711 psi | 61% | 2638 fps | 95.3% |
| ADI AR 2217 | <<locked>> | 88% | 37,579 psi | 59% | 2608 fps | 95.2% |
| ADI AR 2225 | <<locked>> | 86% | 31,981 psi | 50% | 2510 fps | 96.1% |
| Alliant Reloder-16 | <<locked>> | 80% | 49,734 psi | 78% | 2825 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 43,323 psi | 68% | 2700 fps | 98% |
| Alliant Reloder-22 | <<locked>> | 80% | 39,233 psi | 61% | 2644 fps | 97% |
| Alliant Reloder-23 | <<locked>> | 80% | 37,898 psi | 59% | 2598 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 32,692 psi | 51% | 2520 fps | 98.1% |
| Alliant Reloder-26 | <<locked>> | 80% | 42,395 psi | 66% | 2756 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 98% | 49,603 psi | 78% | 2923 fps | 95.4% |
| Baschieri & Pellagri 109 | <<locked>> | 88% | 49,008 psi | 77% | 2792 fps | 95.5% |
| Bofors RP15 | <<locked>> | 80% | 36,434 psi | 57% | 2579 fps | 95.8% |
| Bofors RP30 | <<locked>> | 86% | 37,289 psi | 58% | 2625 fps | 95.4% |
| Bofors RP5 | <<locked>> | 80% | 39,233 psi | 61% | 2644 fps | 97% |
| Bofors RP7 | <<locked>> | 80% | 53,693 psi | 84% | 2825 fps | 99.9% |
| Hodgdon H1000 | <<locked>> | 84% | 35,882 psi | 56% | 2569 fps | 95.2% |
| Hodgdon H414 | <<locked>> | 80% | 53,388 psi | 84% | 2877 fps | 100% |
| Hodgdon H4831 | <<locked>> | 80% | 41,292 psi | 65% | 2644 fps | 95.6% |
| Hodgdon H4831 SC | <<locked>> | 80% | 40,538 psi | 64% | 2628 fps | 95.3% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 46,847 psi | 73% | 2703 fps | 100% |
| Hodgdon Retumbo | 77 gr | 82% | 34,171 psi | 54% | 2605 fps | 95.7% |
| Hodgdon Superformance | <<locked>> | 80% | 53,795 psi | 84% | 2910 fps | 100% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,123 psi | 44% | 1644 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 48,892 psi | 77% | 2756 fps | 99.6% |
| IMR 4831 | <<locked>> | 80% | 49,240 psi | 77% | 2766 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 42,540 psi | 67% | 2641 fps | 96.2% |
| IMR 7828 SSC | <<locked>> | 82% | 40,118 psi | 63% | 2680 fps | 95.9% |
| IMR 8133 Enduron | <<locked>> | 94% | 37,840 psi | 59% | 2661 fps | 95.4% |
| Lovex S065 | <<locked>> | 80% | 52,489 psi | 82% | 2792 fps | 100% |
| Lovex S070 | <<locked>> | 80% | 50,894 psi | 80% | 2789 fps | 99.9% |
| Lovex S071 | <<locked>> | 80% | 33,895 psi | 53% | 2454 fps | 97.7% |
| Norma 204 | <<locked>> | 80% | 49,530 psi | 78% | 2805 fps | 99% |
| Norma 217 | <<locked>> | 90% | 33,243 psi | 52% | 2566 fps | 96% |
| Norma MRP | <<locked>> | 80% | 41,321 psi | 65% | 2717 fps | 98.7% |
| Norma URP | <<locked>> | 80% | 50,531 psi | 79% | 2805 fps | 100% |
| Ramshot Grand | <<locked>> | 80% | 37,144 psi | 58% | 2621 fps | 95.2% |
| Ramshot Hunter | <<locked>> | 80% | 49,501 psi | 78% | 2808 fps | 100% |
| Ramshot Magnum | <<locked>> | 80% | 33,185 psi | 52% | 2500 fps | 95.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,848 psi | 45% | 1686 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 52,011 psi | 82% | 2844 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 50,328 psi | 79% | 2867 fps | 100% |
| ReloadSwiss RS 76 | 80.4 gr | 80% | 31,024 psi | 49% | 2510 fps | 95.3% |
| ReloadSwiss RS 80 | <<locked>> | 92% | 43,874 psi | 69% | 2802 fps | 96% |
| Rottweil R 904 | <<locked>> | 80% | 44,353 psi | 70% | 2684 fps | 97.3% |
| Rottweil R 905 | <<locked>> | 80% | 42,757 psi | 67% | 2687 fps | 98% |
| Rottweil R 907 | <<locked>> | 80% | 53,693 psi | 84% | 2825 fps | 99.9% |
| Shooters World Long Rifle | <<locked>> | 80% | 52,489 psi | 82% | 2792 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 50,894 psi | 80% | 2789 fps | 99.9% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 51,401 psi | 81% | 2743 fps | 99.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 42,424 psi | 66% | 2684 fps | 97.9% |
| Somchem S361 | <<locked>> | 80% | 45,121 psi | 71% | 2671 fps | 96.7% |
| Somchem S365 | <<locked>> | 80% | 47,964 psi | 75% | 2759 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 43,279 psi | 68% | 2667 fps | 98.7% |
| Vihtavuori N160 | <<locked>> | 80% | 52,112 psi | 82% | 2799 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 37,681 psi | 59% | 2543 fps | 97.1% |
| Vihtavuori N550 | <<locked>> | 80% | 51,387 psi | 81% | 2802 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 42,351 psi | 66% | 2677 fps | 100% |
| Vihtavuori N560 | 78 gr | 80% | 41,234 psi | 65% | 2703 fps | 95.7% |
| Vihtavuori N565 | <<locked>> | 84% | 39,059 psi | 61% | 2641 fps | 95.2% |
| Vihtavuori N568 | <<locked>> | 92% | 45,136 psi | 71% | 2815 fps | 95.8% |
| Vihtavuori N570 | <<locked>> | 98% | 52,968 psi | 83% | 3002 fps | 95.9% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 51,184 psi | 80% | 2753 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 53,592 psi | 84% | 2881 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 80% | 34,998 psi | 55% | 2641 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 39,711 psi | 62% | 2595 fps | 97.1% |
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 75 powders for .300 Norma Mag. loaded with the .311 | 190gr | Winchester Silvertip. Vihtavuori N570 delivers the highest muzzle velocity at 3,071 fps; across all powders the maximum-charge window runs from 1,841 fps to 3,071 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 1:6.0 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, Vihtavuori N560 rank at the top here: for .300 Norma Mag. with the .311 | 190gr | Winchester Silvertip 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.