Load Specifications
Load data in caliber .300 Norma Mag. with .308 | 200gr | Peregrine VRG-3 bullet and 71 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 IMR 7828 SSC.
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>> | 92% | 57,435 psi | 90% | 2828 fps | 100% |
| Accurate 4350 | <<locked>> | 82% | 54,447 psi | 85% | 2795 fps | 100% |
| Accurate MAGPRO | <<locked>> | 90% | 56,420 psi | 88% | 2933 fps | 98.9% |
| ADI AR 2209 | <<locked>> | 88% | 55,622 psi | 87% | 2861 fps | 99.8% |
| ADI AR 2213 | <<locked>> | 92% | 57,580 psi | 90% | 2933 fps | 99.6% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 55,434 psi | 87% | 2900 fps | 99.7% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 49,821 psi | 78% | 2861 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 84% | 55,825 psi | 87% | 2854 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 88% | 55,114 psi | 86% | 2851 fps | 99.8% |
| Alliant Reloder-22 | <<locked>> | 92% | 57,682 psi | 90% | 2927 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 92% | 55,492 psi | 87% | 2838 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 96% | 55,129 psi | 86% | 2900 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 88% | 55,825 psi | 87% | 2920 fps | 100% |
| Alliant Reloder-33ᴾ | <<locked>> | 100% | 52,402 psi | 82% | 2917 fps | 96.7% |
| Baschieri & Pellagri 109 | <<locked>> | 92% | 54,795 psi | 86% | 2835 fps | 97.3% |
| Bofors RP15 | <<locked>> | 94% | 56,637 psi | 89% | 2907 fps | 99.9% |
| Bofors RP30 | <<locked>> | 98% | 54,781 psi | 86% | 2910 fps | 99.6% |
| Bofors RP5 | <<locked>> | 92% | 57,682 psi | 90% | 2927 fps | 100% |
| Bofors RP7 | <<locked>> | 82% | 56,347 psi | 88% | 2799 fps | 100% |
| Hodgdon H1000 | <<locked>> | 98% | 57,058 psi | 89% | 2923 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 82% | 56,246 psi | 88% | 2854 fps | 100% |
| Hodgdon H4831 | <<locked>> | 90% | 57,043 psi | 89% | 2871 fps | 99.2% |
| Hodgdon H4831 SC | <<locked>> | 90% | 55,796 psi | 87% | 2848 fps | 99.1% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 55,985 psi | 88% | 2776 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 96% | 53,954 psi | 85% | 2976 fps | 100% |
| Hodgdon Superformance | <<locked>> | 82% | 56,927 psi | 89% | 2890 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,434 psi | 59% | 1785 fps | 100% |
| IMR 4350 | <<locked>> | 84% | 54,766 psi | 86% | 2789 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 82% | 57,682 psi | 90% | 2818 fps | 100% |
| IMR 4831 | <<locked>> | 84% | 54,882 psi | 86% | 2789 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 90% | 57,595 psi | 90% | 2848 fps | 99.3% |
| IMR 7828 SSC | <<locked>> | 92% | 55,506 psi | 87% | 2910 fps | 99.5% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 45,179 psi | 71% | 2762 fps | 98.2% |
| Lovex S065 | <<locked>> | 82% | 54,984 psi | 86% | 2766 fps | 100% |
| Lovex S070 | <<locked>> | 84% | 56,811 psi | 89% | 2815 fps | 100% |
| Lovex S071 | <<locked>> | 96% | 55,114 psi | 86% | 2795 fps | 100% |
| Norma 204 | <<locked>> | 84% | 55,811 psi | 87% | 2844 fps | 99.8% |
| Norma 217ᴾ | <<locked>> | 100% | 45,687 psi | 72% | 2789 fps | 99.7% |
| Norma MRP | <<locked>> | 90% | 57,725 psi | 90% | 2943 fps | 100% |
| Norma URP | <<locked>> | 84% | 56,637 psi | 89% | 2831 fps | 100% |
| Ramshot Grand | <<locked>> | 92% | 56,695 psi | 89% | 2936 fps | 99.7% |
| Ramshot Hunter | <<locked>> | 84% | 55,564 psi | 87% | 2841 fps | 100% |
| Ramshot Magnum | <<locked>> | 94% | 54,824 psi | 86% | 2864 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,174 psi | 60% | 1824 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 54,781 psi | 86% | 2822 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 84% | 57,319 psi | 90% | 2907 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 96% | 54,650 psi | 86% | 2972 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 98% | 53,766 psi | 84% | 2930 fps | 98.7% |
| Rottweil R 904 | <<locked>> | 88% | 56,434 psi | 88% | 2831 fps | 99.5% |
| Rottweil R 905 | <<locked>> | 88% | 54,679 psi | 86% | 2841 fps | 99.8% |
| Rottweil R 907 | <<locked>> | 82% | 56,347 psi | 88% | 2799 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 82% | 54,984 psi | 86% | 2766 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 56,811 psi | 89% | 2815 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 57,595 psi | 90% | 2772 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 88% | 54,273 psi | 85% | 2835 fps | 99.8% |
| Somchem S361 | <<locked>> | 86% | 54,186 psi | 85% | 2772 fps | 98.8% |
| Somchem S365 | <<locked>> | 86% | 57,696 psi | 90% | 2835 fps | 100% |
| Somchem S385 | <<locked>> | 88% | 55,056 psi | 86% | 2812 fps | 100% |
| Vihtavuori N160 | <<locked>> | 82% | 54,621 psi | 86% | 2772 fps | 100% |
| Vihtavuori N165 | <<locked>> | 92% | 54,955 psi | 86% | 2802 fps | 99.9% |
| Vihtavuori N170 | <<locked>> | 98% | 57,261 psi | 90% | 2864 fps | 96% |
| Vihtavuori N550 | <<locked>> | 84% | 57,493 psi | 90% | 2828 fps | 100% |
| Vihtavuori N555 | <<locked>> | 90% | 57,435 psi | 90% | 2861 fps | 100% |
| Vihtavuori N560 | <<locked>> | 90% | 57,334 psi | 90% | 2943 fps | 99.4% |
| Vihtavuori N565 | <<locked>> | 96% | 57,363 psi | 90% | 2927 fps | 99.5% |
| Vihtavuori N568 | <<locked>> | 98% | 54,607 psi | 86% | 2930 fps | 98.4% |
| Vihtavuori N570ᴾ | <<locked>> | 100% | 55,579 psi | 87% | 2986 fps | 97% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 54,114 psi | 85% | 2730 fps | 100% |
| Winchester 760 | <<locked>> | 82% | 56,246 psi | 88% | 2854 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 92% | 54,317 psi | 85% | 2917 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 90% | 54,940 psi | 86% | 2812 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% | 38,029 psi | 60% | 2497 fps | 99.1% |
| Accurate 4350 | <<locked>> | 80% | 50,821 psi | 80% | 2740 fps | 100% |
| Accurate MAGPRO | <<locked>> | 82% | 42,337 psi | 66% | 2674 fps | 95.8% |
| ADI AR 2209 | <<locked>> | 80% | 42,409 psi | 66% | 2628 fps | 98.1% |
| ADI AR 2213 | <<locked>> | 80% | 37,811 psi | 59% | 2562 fps | 95.5% |
| ADI AR 2217 | <<locked>> | 88% | 36,738 psi | 58% | 2536 fps | 95.4% |
| ADI AR 2225 | <<locked>> | 86% | 31,038 psi | 49% | 2438 fps | 96.2% |
| Alliant Reloder-16 | <<locked>> | 80% | 48,907 psi | 77% | 2746 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 42,380 psi | 66% | 2621 fps | 98.1% |
| Alliant Reloder-22 | <<locked>> | 80% | 38,232 psi | 60% | 2569 fps | 97.1% |
| Alliant Reloder-23 | <<locked>> | 80% | 36,898 psi | 58% | 2520 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 31,792 psi | 50% | 2444 fps | 98.2% |
| Alliant Reloder-26 | <<locked>> | 80% | 41,118 psi | 64% | 2674 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 98% | 48,443 psi | 76% | 2848 fps | 95.6% |
| Baschieri & Pellagri 109 | <<locked>> | 88% | 48,370 psi | 76% | 2720 fps | 95.7% |
| Bofors RP15 | <<locked>> | 80% | 35,491 psi | 56% | 2503 fps | 96% |
| Bofors RP30 | <<locked>> | 86% | 36,056 psi | 56% | 2543 fps | 95.5% |
| Bofors RP5 | <<locked>> | 80% | 38,232 psi | 60% | 2569 fps | 97.1% |
| Bofors RP7 | <<locked>> | 80% | 52,852 psi | 83% | 2743 fps | 99.9% |
| Hodgdon H1000 | <<locked>> | 84% | 34,954 psi | 55% | 2493 fps | 95.4% |
| Hodgdon H414 | <<locked>> | 80% | 52,518 psi | 82% | 2795 fps | 100% |
| Hodgdon H4831 | <<locked>> | 80% | 40,437 psi | 63% | 2569 fps | 95.8% |
| Hodgdon H4831 SC | <<locked>> | 80% | 39,668 psi | 62% | 2552 fps | 95.5% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 46,050 psi | 72% | 2628 fps | 100% |
| Hodgdon Retumbo | 74.5 gr | 82% | 33,243 psi | 52% | 2526 fps | 95.9% |
| Hodgdon Superformance | <<locked>> | 80% | 52,852 psi | 83% | 2831 fps | 100% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,036 psi | 44% | 1594 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 48,196 psi | 76% | 2680 fps | 99.6% |
| IMR 4451 Enduron | <<locked>> | 80% | 54,128 psi | 85% | 2766 fps | 100% |
| IMR 4831 | <<locked>> | 80% | 48,138 psi | 75% | 2684 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 41,814 psi | 66% | 2566 fps | 96.4% |
| IMR 7828 SSC | 72.6 gr | 80% | 36,463 psi | 57% | 2536 fps | 95% |
| IMR 8133 Enduron | <<locked>> | 94% | 36,695 psi | 57% | 2582 fps | 95.5% |
| Lovex S065 | <<locked>> | 80% | 51,576 psi | 81% | 2713 fps | 100% |
| Lovex S070 | <<locked>> | 80% | 49,995 psi | 78% | 2710 fps | 100% |
| Lovex S071 | <<locked>> | 80% | 32,677 psi | 51% | 2375 fps | 97.7% |
| Norma 204 | <<locked>> | 80% | 48,718 psi | 76% | 2730 fps | 99.1% |
| Norma 217 | <<locked>> | 90% | 32,097 psi | 50% | 2484 fps | 96% |
| Norma MRP | <<locked>> | 80% | 40,379 psi | 63% | 2638 fps | 98.8% |
| Norma URP | <<locked>> | 80% | 49,632 psi | 78% | 2726 fps | 100% |
| Ramshot Grand | <<locked>> | 80% | 36,071 psi | 57% | 2543 fps | 95.3% |
| Ramshot Hunter | <<locked>> | 80% | 48,660 psi | 76% | 2733 fps | 100% |
| Ramshot Magnum | <<locked>> | 80% | 32,111 psi | 50% | 2425 fps | 95.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,601 psi | 45% | 1631 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 51,097 psi | 80% | 2766 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 49,443 psi | 77% | 2785 fps | 100% |
| ReloadSwiss RS 76 | 77.8 gr | 80% | 29,994 psi | 47% | 2431 fps | 95.4% |
| ReloadSwiss RS 80 | <<locked>> | 92% | 42,511 psi | 67% | 2720 fps | 96.1% |
| Rottweil R 904 | <<locked>> | 80% | 43,569 psi | 68% | 2608 fps | 97.4% |
| Rottweil R 905 | <<locked>> | 80% | 41,872 psi | 66% | 2612 fps | 98.2% |
| Rottweil R 907 | <<locked>> | 80% | 52,852 psi | 83% | 2743 fps | 99.9% |
| Shooters World Long Rifle | <<locked>> | 80% | 51,576 psi | 81% | 2713 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 49,995 psi | 78% | 2710 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 50,575 psi | 79% | 2667 fps | 99.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 41,539 psi | 65% | 2608 fps | 98.1% |
| Somchem S361 | <<locked>> | 80% | 44,237 psi | 69% | 2595 fps | 96.9% |
| Somchem S365 | <<locked>> | 80% | 47,036 psi | 74% | 2680 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 42,235 psi | 66% | 2589 fps | 98.8% |
| Vihtavuori N160 | <<locked>> | 80% | 51,126 psi | 80% | 2720 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 36,680 psi | 57% | 2467 fps | 97.2% |
| Vihtavuori N170 | <<locked>> | 96% | 53,403 psi | 84% | 2802 fps | 95.1% |
| Vihtavuori N550 | <<locked>> | 80% | 50,401 psi | 79% | 2723 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 41,191 psi | 65% | 2598 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 40,364 psi | 63% | 2631 fps | 95.9% |
| Vihtavuori N565 | <<locked>> | 84% | 37,956 psi | 59% | 2562 fps | 95.3% |
| Vihtavuori N568 | <<locked>> | 92% | 43,859 psi | 69% | 2733 fps | 95.9% |
| Vihtavuori N570 | <<locked>> | 96% | 47,935 psi | 75% | 2851 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 50,372 psi | 79% | 2677 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 52,707 psi | 83% | 2799 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 80% | 33,895 psi | 53% | 2559 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 38,769 psi | 61% | 2520 fps | 97.2% |
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 Norma Mag. loaded with the .308 | 200gr | Peregrine VRG-3. Vihtavuori N570 delivers the highest muzzle velocity at 2,986 fps; across all powders the maximum-charge window runs from 1,785 fps to 2,986 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 59–90 %, leaving at least 10 % headroom. The 200.0 gr projectile in 0.308" calls for a 1:12.0 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, IMR 7828 SSC rank at the top here: for .300 Norma Mag. with the .308 | 200gr | Peregrine VRG-3 they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Alliant Reloder-50, IMR 7977 Enduron, Lovex D100 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.