Load Specifications
Load data in caliber .300 Norma Mag. with .308 | 200gr | Frontier PH HPFB bullet and 70 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% | 54,650 psi | 86% | 2782 fps | 100% |
| Accurate 4350 | <<locked>> | 82% | 55,637 psi | 87% | 2805 fps | 100% |
| Accurate MAGPRO | <<locked>> | 90% | 57,159 psi | 90% | 2936 fps | 99% |
| ADI AR 2209 | <<locked>> | 88% | 56,318 psi | 88% | 2867 fps | 99.9% |
| ADI AR 2213 | <<locked>> | 90% | 54,259 psi | 85% | 2874 fps | 99.3% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 56,115 psi | 88% | 2904 fps | 99.7% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 50,604 psi | 79% | 2867 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 88% | 56,434 psi | 88% | 2864 fps | 99.9% |
| Alliant Reloder-16 | <<locked>> | 84% | 56,637 psi | 89% | 2858 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 88% | 55,796 psi | 87% | 2854 fps | 99.8% |
| Alliant Reloder-22 | <<locked>> | 90% | 54,650 psi | 86% | 2871 fps | 99.8% |
| Alliant Reloder-23 | <<locked>> | 92% | 56,173 psi | 88% | 2841 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 96% | 55,811 psi | 87% | 2904 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 88% | 56,884 psi | 89% | 2930 fps | 100% |
| Alliant Reloder-33ᴾ | <<locked>> | 100% | 53,127 psi | 83% | 2923 fps | 96.8% |
| Baschieri & Pellagri 109 | <<locked>> | 92% | 55,288 psi | 87% | 2838 fps | 97.4% |
| Bofors RP15 | <<locked>> | 94% | 57,522 psi | 90% | 2913 fps | 99.9% |
| Bofors RP30 | <<locked>> | 98% | 55,622 psi | 87% | 2913 fps | 99.7% |
| Bofors RP5 | <<locked>> | 90% | 54,650 psi | 86% | 2871 fps | 99.8% |
| Bofors RP7 | <<locked>> | 82% | 57,014 psi | 89% | 2802 fps | 100% |
| Hodgdon H1000 | <<locked>> | 96% | 54,027 psi | 85% | 2871 fps | 99.8% |
| Hodgdon H414 | <<locked>> | 82% | 56,985 psi | 89% | 2858 fps | 100% |
| Hodgdon H4831 | <<locked>> | 90% | 57,566 psi | 90% | 2871 fps | 99.2% |
| Hodgdon H4831 SC | <<locked>> | 90% | 56,521 psi | 89% | 2854 fps | 99.1% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 56,695 psi | 89% | 2779 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 96% | 54,839 psi | 86% | 2986 fps | 100% |
| Hodgdon Superformance | <<locked>> | 82% | 57,508 psi | 90% | 2894 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,449 psi | 59% | 1781 fps | 100% |
| IMR 4350 | <<locked>> | 84% | 55,347 psi | 87% | 2792 fps | 100% |
| IMR 4831 | <<locked>> | 84% | 55,927 psi | 88% | 2799 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 88% | 54,679 psi | 86% | 2795 fps | 99% |
| IMR 7828 SSC | <<locked>> | 92% | 56,304 psi | 88% | 2917 fps | 99.5% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 46,238 psi | 72% | 2779 fps | 98.4% |
| Lovex S065 | <<locked>> | 82% | 55,854 psi | 88% | 2769 fps | 100% |
| Lovex S070 | <<locked>> | 84% | 57,580 psi | 90% | 2818 fps | 100% |
| Lovex S071 | <<locked>> | 96% | 56,072 psi | 88% | 2802 fps | 100% |
| Norma 204 | <<locked>> | 84% | 56,492 psi | 89% | 2848 fps | 99.8% |
| Norma 217ᴾ | <<locked>> | 100% | 46,659 psi | 73% | 2802 fps | 99.7% |
| Norma MRP | <<locked>> | 88% | 54,636 psi | 86% | 2890 fps | 100% |
| Norma URP | <<locked>> | 84% | 57,348 psi | 90% | 2835 fps | 100% |
| Ramshot Grand | <<locked>> | 92% | 57,363 psi | 90% | 2940 fps | 99.8% |
| Ramshot Hunter | <<locked>> | 84% | 56,304 psi | 88% | 2844 fps | 100% |
| Ramshot Magnum | <<locked>> | 94% | 55,637 psi | 87% | 2871 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,392 psi | 60% | 1821 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 55,651 psi | 87% | 2828 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 82% | 54,085 psi | 85% | 2854 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 96% | 55,506 psi | 87% | 2982 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 98% | 54,737 psi | 86% | 2936 fps | 98.8% |
| Rottweil R 904 | <<locked>> | 88% | 57,101 psi | 89% | 2838 fps | 99.5% |
| Rottweil R 905 | <<locked>> | 88% | 55,463 psi | 87% | 2848 fps | 99.9% |
| Rottweil R 907 | <<locked>> | 82% | 57,014 psi | 89% | 2802 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 82% | 55,854 psi | 88% | 2769 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 57,580 psi | 90% | 2818 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 54,694 psi | 86% | 2723 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 88% | 55,042 psi | 86% | 2841 fps | 99.8% |
| Somchem S361 | <<locked>> | 86% | 54,955 psi | 86% | 2776 fps | 98.9% |
| Somchem S365 | <<locked>> | 84% | 54,766 psi | 86% | 2789 fps | 100% |
| Somchem S385 | <<locked>> | 88% | 55,956 psi | 88% | 2822 fps | 100% |
| Vihtavuori N160 | <<locked>> | 82% | 55,492 psi | 87% | 2779 fps | 100% |
| Vihtavuori N165 | <<locked>> | 92% | 55,608 psi | 87% | 2805 fps | 100% |
| Vihtavuori N550 | <<locked>> | 82% | 54,737 psi | 86% | 2782 fps | 100% |
| Vihtavuori N555 | <<locked>> | 88% | 54,781 psi | 86% | 2818 fps | 100% |
| Vihtavuori N560 | <<locked>> | 88% | 54,288 psi | 85% | 2887 fps | 99% |
| Vihtavuori N565 | <<locked>> | 94% | 54,607 psi | 86% | 2877 fps | 99.2% |
| Vihtavuori N568 | <<locked>> | 98% | 55,477 psi | 87% | 2940 fps | 98.5% |
| Vihtavuori N570ᴾ | <<locked>> | 100% | 56,434 psi | 88% | 2995 fps | 97.1% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 54,781 psi | 86% | 2733 fps | 100% |
| Winchester 760 | <<locked>> | 82% | 57,203 psi | 90% | 2861 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 92% | 55,158 psi | 86% | 2923 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 90% | 55,767 psi | 87% | 2815 fps | 99.8% |
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% | 39,233 psi | 61% | 2516 fps | 99.3% |
| Accurate 4350 | <<locked>> | 80% | 52,011 psi | 82% | 2749 fps | 100% |
| Accurate MAGPRO | <<locked>> | 80% | 40,277 psi | 63% | 2625 fps | 95.1% |
| ADI AR 2209 | <<locked>> | 80% | 43,192 psi | 68% | 2638 fps | 98.3% |
| ADI AR 2213 | <<locked>> | 80% | 38,522 psi | 60% | 2572 fps | 95.7% |
| ADI AR 2217 | <<locked>> | 88% | 37,521 psi | 59% | 2549 fps | 95.7% |
| ADI AR 2225 | <<locked>> | 84% | 29,921 psi | 47% | 2395 fps | 95.5% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 43,613 psi | 68% | 2641 fps | 98.3% |
| Alliant Reloder-16 | <<locked>> | 80% | 49,690 psi | 78% | 2753 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 43,221 psi | 68% | 2635 fps | 98.3% |
| Alliant Reloder-22 | <<locked>> | 80% | 39,030 psi | 61% | 2579 fps | 97.3% |
| Alliant Reloder-23 | <<locked>> | 80% | 37,855 psi | 59% | 2536 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 32,721 psi | 51% | 2461 fps | 98.5% |
| Alliant Reloder-26 | <<locked>> | 80% | 42,090 psi | 66% | 2684 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 98% | 49,429 psi | 77% | 2858 fps | 95.8% |
| Baschieri & Pellagri 109 | <<locked>> | 88% | 48,834 psi | 77% | 2723 fps | 95.8% |
| Bofors RP15 | <<locked>> | 80% | 36,434 psi | 57% | 2520 fps | 96.3% |
| Bofors RP30 | <<locked>> | 86% | 37,028 psi | 58% | 2559 fps | 95.8% |
| Bofors RP5 | <<locked>> | 80% | 39,030 psi | 61% | 2579 fps | 97.3% |
| Bofors RP7 | <<locked>> | 80% | 53,505 psi | 84% | 2749 fps | 99.9% |
| Hodgdon H1000 | <<locked>> | 84% | 35,752 psi | 56% | 2507 fps | 95.7% |
| Hodgdon H414 | <<locked>> | 80% | 53,243 psi | 83% | 2799 fps | 100% |
| Hodgdon H4831 | <<locked>> | 80% | 41,133 psi | 64% | 2579 fps | 96% |
| Hodgdon H4831 SC | <<locked>> | 80% | 40,350 psi | 63% | 2562 fps | 95.7% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 46,760 psi | 73% | 2635 fps | 100% |
| Hodgdon Retumbo | 72.2 gr | 80% | 31,981 psi | 50% | 2484 fps | 95.1% |
| Hodgdon Superformance | <<locked>> | 80% | 53,621 psi | 84% | 2835 fps | 100% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,152 psi | 44% | 1591 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 48,965 psi | 77% | 2687 fps | 99.7% |
| IMR 4831 | <<locked>> | 80% | 49,095 psi | 77% | 2694 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 42,583 psi | 67% | 2575 fps | 96.6% |
| IMR 7828 SSC | <<locked>> | 80% | 37,333 psi | 59% | 2552 fps | 95.3% |
| IMR 8133 Enduron | <<locked>> | 94% | 37,710 psi | 59% | 2598 fps | 95.9% |
| Lovex S065 | <<locked>> | 80% | 52,475 psi | 82% | 2720 fps | 100% |
| Lovex S070 | <<locked>> | 80% | 50,937 psi | 80% | 2717 fps | 100% |
| Lovex S071 | <<locked>> | 80% | 33,866 psi | 53% | 2395 fps | 98% |
| Norma 204 | <<locked>> | 80% | 49,385 psi | 77% | 2733 fps | 99.2% |
| Norma 217 | <<locked>> | 88% | 30,951 psi | 49% | 2444 fps | 95.4% |
| Norma MRP | <<locked>> | 80% | 41,234 psi | 65% | 2651 fps | 99% |
| Norma URP | <<locked>> | 80% | 50,546 psi | 79% | 2733 fps | 100% |
| Ramshot Grand | <<locked>> | 80% | 37,043 psi | 58% | 2559 fps | 95.7% |
| Ramshot Hunter | <<locked>> | 80% | 49,356 psi | 77% | 2736 fps | 100% |
| Ramshot Magnum | <<locked>> | 80% | 33,011 psi | 52% | 2441 fps | 96.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,761 psi | 45% | 1627 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 51,967 psi | 81% | 2772 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 50,169 psi | 79% | 2792 fps | 100% |
| ReloadSwiss RS 76 | 77.2 gr | 80% | 30,908 psi | 48% | 2454 fps | 95.9% |
| ReloadSwiss RS 80 | <<locked>> | 90% | 40,393 psi | 63% | 2671 fps | 95.3% |
| Rottweil R 904 | <<locked>> | 80% | 44,179 psi | 69% | 2612 fps | 97.5% |
| Rottweil R 905 | <<locked>> | 80% | 42,598 psi | 67% | 2618 fps | 98.3% |
| Rottweil R 907 | <<locked>> | 80% | 53,505 psi | 84% | 2749 fps | 99.9% |
| Shooters World Long Rifle | <<locked>> | 80% | 52,475 psi | 82% | 2720 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 50,937 psi | 80% | 2717 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 51,285 psi | 80% | 2674 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 42,308 psi | 66% | 2615 fps | 98.2% |
| Somchem S361 | <<locked>> | 80% | 44,976 psi | 70% | 2605 fps | 97% |
| Somchem S365 | <<locked>> | 80% | 48,037 psi | 75% | 2690 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 43,076 psi | 68% | 2602 fps | 99% |
| Vihtavuori N160 | <<locked>> | 80% | 51,996 psi | 81% | 2726 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 37,608 psi | 59% | 2480 fps | 97.4% |
| Vihtavuori N550 | <<locked>> | 80% | 51,184 psi | 80% | 2730 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 42,308 psi | 66% | 2612 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 41,147 psi | 64% | 2641 fps | 96.1% |
| Vihtavuori N565 | <<locked>> | 84% | 38,986 psi | 61% | 2582 fps | 95.7% |
| Vihtavuori N568 | <<locked>> | 90% | 41,785 psi | 65% | 2687 fps | 95.2% |
| Vihtavuori N570 | <<locked>> | 96% | 49,008 psi | 77% | 2864 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 51,039 psi | 80% | 2680 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 53,447 psi | 84% | 2802 fps | 100% |
| Winchester StaBALL HD | 74.1 gr | 80% | 34,838 psi | 55% | 2575 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 39,566 psi | 62% | 2530 fps | 97.4% |
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 70 powders for .300 Norma Mag. loaded with the .308 | 200gr | Frontier PH HPFB. Vihtavuori N570 delivers the highest muzzle velocity at 2,995 fps; across all powders the maximum-charge window runs from 1,781 fps to 2,995 fps. ADI AR 2217 gives the best case fill at 100 %, and 70 of the 70 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 200.0 gr projectile in 0.308" calls for a 1:11.0 twist; slower twists will usually not stabilise this weight. ADI AR 2217, ADI AR 2225, Alliant Reloder-33 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 .308 | 200gr | Frontier PH HPFB 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.