Load Specifications
Load data in caliber .300 Norma Mag. with .308 | 180gr | Peregrine Bushmaster (VRG-3) bullet and 76 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Ramshot Grand, Accurate MAGPRO and Alliant Reloder-26.
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% | 55,071 psi | 86% | 2927 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 56,376 psi | 88% | 2963 fps | 100% |
| Accurate High Country | <<locked>> | 92% | 56,956 psi | 89% | 3084 fps | 99% |
| Accurate MAGPRO | <<locked>> | 92% | 53,940 psi | 85% | 3022 fps | 97.5% |
| ADI AR 2208 | <<locked>> | 82% | 57,406 psi | 90% | 2923 fps | 100% |
| ADI AR 2209 | <<locked>> | 92% | 57,595 psi | 90% | 3025 fps | 99.5% |
| ADI AR 2213 | <<locked>> | 94% | 55,259 psi | 87% | 3028 fps | 98.6% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 49,574 psi | 78% | 2920 fps | 97.9% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 44,005 psi | 69% | 2871 fps | 99.3% |
| Alliant Power Pro Varmint | <<locked>> | 92% | 57,667 psi | 90% | 3018 fps | 99.5% |
| Alliant Reloder-16 | <<locked>> | 88% | 57,551 psi | 90% | 3022 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 82% | 54,853 psi | 86% | 2976 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 92% | 56,898 psi | 89% | 3012 fps | 99.5% |
| Alliant Reloder-22 | <<locked>> | 94% | 55,187 psi | 86% | 3022 fps | 99.4% |
| Alliant Reloder-23 | <<locked>> | 96% | 56,420 psi | 88% | 2992 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 55,782 psi | 87% | 3054 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 92% | 56,971 psi | 89% | 3081 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 96% | 57,029 psi | 89% | 2986 fps | 96.4% |
| Bofors RP15 | <<locked>> | 96% | 54,172 psi | 85% | 3002 fps | 99.2% |
| Bofors RP30ᴾ | <<locked>> | 100% | 51,677 psi | 81% | 2989 fps | 98.5% |
| Bofors RP5 | <<locked>> | 94% | 55,187 psi | 86% | 3022 fps | 99.4% |
| Bofors RP7 | <<locked>> | 84% | 55,114 psi | 86% | 2910 fps | 99.7% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 54,752 psi | 86% | 3015 fps | 99.2% |
| Hodgdon H414 | <<locked>> | 84% | 54,621 psi | 86% | 2963 fps | 99.9% |
| Hodgdon H4350 | <<locked>> | 84% | 57,188 psi | 90% | 2976 fps | 99.6% |
| Hodgdon H4831 | <<locked>> | 92% | 55,056 psi | 86% | 2963 fps | 98% |
| Hodgdon H4831 SC | <<locked>> | 92% | 54,041 psi | 85% | 2946 fps | 97.8% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 57,667 psi | 90% | 2940 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 54,723 psi | 86% | 3127 fps | 99.9% |
| Hodgdon Superformance | <<locked>> | 84% | 54,969 psi | 86% | 2999 fps | 99.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,956 psi | 58% | 1864 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 56,869 psi | 89% | 2949 fps | 99.8% |
| IMR 4451 Enduron | <<locked>> | 84% | 56,710 psi | 89% | 2936 fps | 99.9% |
| IMR 4831 | <<locked>> | 88% | 56,681 psi | 89% | 2953 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 56,188 psi | 88% | 2949 fps | 98.3% |
| IMR 7828 SSC | <<locked>> | 96% | 56,884 psi | 89% | 3064 fps | 98.9% |
| Lovex S065 | <<locked>> | 86% | 57,188 psi | 90% | 2930 fps | 100% |
| Lovex S070 | <<locked>> | 86% | 55,492 psi | 87% | 2927 fps | 99.9% |
| Lovex S071ᴾ | <<locked>> | 100% | 56,159 psi | 88% | 2943 fps | 100% |
| Norma 204 | <<locked>> | 86% | 54,346 psi | 85% | 2949 fps | 99.1% |
| Norma 217ᴾ | <<locked>> | 100% | 39,566 psi | 62% | 2792 fps | 97.6% |
| Norma MRP | <<locked>> | 92% | 55,158 psi | 86% | 3041 fps | 99.9% |
| Norma URP | <<locked>> | 86% | 55,013 psi | 86% | 2946 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 53,722 psi | 84% | 3022 fps | 98.8% |
| Ramshot Hunter | <<locked>> | 88% | 57,537 psi | 90% | 3005 fps | 100% |
| Ramshot Magnum | <<locked>> | 98% | 56,246 psi | 88% | 3018 fps | 99.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,797 psi | 59% | 1906 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 56,492 psi | 89% | 2986 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 55,129 psi | 86% | 3018 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 55,651 psi | 87% | 3123 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 50,198 psi | 79% | 2995 fps | 96.9% |
| Rottweil R 903 | <<locked>> | 82% | 56,304 psi | 88% | 2907 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 54,926 psi | 86% | 2933 fps | 98.5% |
| Rottweil R 905 | <<locked>> | 92% | 56,449 psi | 88% | 2999 fps | 99.5% |
| Rottweil R 907 | <<locked>> | 84% | 55,114 psi | 86% | 2910 fps | 99.7% |
| Shooters World Long Rifle | <<locked>> | 86% | 57,188 psi | 90% | 2930 fps | 100% |
| Shooters World SW4350 | <<locked>> | 86% | 55,492 psi | 87% | 2927 fps | 99.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 56,376 psi | 88% | 2782 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 56,405 psi | 88% | 2884 fps | 99.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 56,014 psi | 88% | 2995 fps | 99.5% |
| Somchem S355 | <<locked>> | 82% | 55,970 psi | 88% | 2900 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 56,391 psi | 88% | 2927 fps | 98.2% |
| Somchem S365 | <<locked>> | 88% | 55,288 psi | 87% | 2946 fps | 100% |
| Somchem S385 | <<locked>> | 92% | 56,811 psi | 89% | 2969 fps | 99.8% |
| Vihtavuori N150 | <<locked>> | 84% | 57,392 psi | 90% | 2874 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 56,782 psi | 89% | 2940 fps | 100% |
| Vihtavuori N165 | <<locked>> | 96% | 56,550 psi | 89% | 2953 fps | 99.7% |
| Vihtavuori N550 | <<locked>> | 86% | 55,782 psi | 87% | 2943 fps | 100% |
| Vihtavuori N555 | <<locked>> | 92% | 54,795 psi | 86% | 2966 fps | 100% |
| Vihtavuori N560 | <<locked>> | 92% | 55,013 psi | 86% | 3038 fps | 98.2% |
| Vihtavuori N565 | <<locked>> | 98% | 54,636 psi | 86% | 3012 fps | 98.4% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 51,532 psi | 81% | 3005 fps | 96.6% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 56,376 psi | 88% | 2897 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 54,621 psi | 86% | 2963 fps | 99.9% |
| Winchester StaBALL HD | <<locked>> | 96% | 54,244 psi | 85% | 3074 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 56,985 psi | 89% | 2969 fps | 99.5% |
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% | 33,924 psi | 53% | 2520 fps | 96.9% |
| Accurate 4350 | <<locked>> | 80% | 45,803 psi | 72% | 2789 fps | 100% |
| Accurate High Country | <<locked>> | 84% | 42,670 psi | 67% | 2815 fps | 95.9% |
| Accurate MAGPRO | 83.1 gr | 88% | 46,659 psi | 73% | 2887 fps | 95.7% |
| ADI AR 2208 | <<locked>> | 80% | 53,983 psi | 85% | 2871 fps | 100% |
| ADI AR 2209 | <<locked>> | 80% | 38,290 psi | 60% | 2657 fps | 95.6% |
| ADI AR 2213 | <<locked>> | 86% | 41,858 psi | 66% | 2766 fps | 95.4% |
| ADI AR 2217 | <<locked>> | 94% | 40,321 psi | 63% | 2726 fps | 95.1% |
| ADI AR 2225 | <<locked>> | 92% | 33,721 psi | 53% | 2615 fps | 95.8% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 38,682 psi | 61% | 2661 fps | 95.7% |
| Alliant Reloder-16 | <<locked>> | 80% | 44,048 psi | 69% | 2799 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 80% | 50,981 psi | 80% | 2917 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 38,334 psi | 60% | 2654 fps | 95.7% |
| Alliant Reloder-22 | <<locked>> | 82% | 36,448 psi | 57% | 2644 fps | 95% |
| Alliant Reloder-23 | <<locked>> | 80% | 32,677 psi | 51% | 2549 fps | 99.4% |
| Alliant Reloder-25 | <<locked>> | 82% | 30,313 psi | 48% | 2510 fps | 96.1% |
| Alliant Reloder-26 | 76.4 gr | 80% | 35,882 psi | 56% | 2690 fps | 98.8% |
| Baschieri & Pellagri 109 | <<locked>> | 94% | 53,519 psi | 84% | 2927 fps | 95.6% |
| Bofors RP15 | <<locked>> | 86% | 38,899 psi | 61% | 2703 fps | 95.8% |
| Bofors RP30 | <<locked>> | 92% | 39,044 psi | 61% | 2733 fps | 95.1% |
| Bofors RP5 | <<locked>> | 82% | 36,448 psi | 57% | 2644 fps | 95% |
| Bofors RP7 | <<locked>> | 80% | 48,457 psi | 76% | 2795 fps | 99% |
| Hodgdon H1000 | <<locked>> | 90% | 38,479 psi | 60% | 2687 fps | 95.1% |
| Hodgdon H414 | <<locked>> | 80% | 47,601 psi | 75% | 2841 fps | 99.3% |
| Hodgdon H4350 | <<locked>> | 80% | 50,169 psi | 79% | 2858 fps | 98.8% |
| Hodgdon H4831 | <<locked>> | 86% | 44,788 psi | 70% | 2776 fps | 95.6% |
| Hodgdon H4831 SC | <<locked>> | 86% | 43,947 psi | 69% | 2759 fps | 95.4% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 41,379 psi | 65% | 2677 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 88% | 36,318 psi | 57% | 2720 fps | 95.6% |
| Hodgdon Superformance | <<locked>> | 80% | 47,340 psi | 74% | 2867 fps | 99.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,615 psi | 43% | 1663 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 44,092 psi | 69% | 2726 fps | 98.3% |
| IMR 4451 Enduron | <<locked>> | 80% | 50,009 psi | 78% | 2822 fps | 99.4% |
| IMR 4831 | <<locked>> | 80% | 43,584 psi | 68% | 2733 fps | 99.9% |
| IMR 4955 Enduron | <<locked>> | 84% | 43,482 psi | 68% | 2717 fps | 95.5% |
| IMR 7828 SSC | <<locked>> | 88% | 43,120 psi | 68% | 2808 fps | 95.9% |
| Lovex S065 | <<locked>> | 80% | 47,398 psi | 74% | 2769 fps | 99.8% |
| Lovex S070 | <<locked>> | 80% | 45,745 psi | 72% | 2756 fps | 99.1% |
| Lovex S071 | <<locked>> | 82% | 31,067 psi | 49% | 2444 fps | 95.7% |
| Norma 204 | <<locked>> | 80% | 44,150 psi | 69% | 2762 fps | 97.2% |
| Norma 217 | <<locked>> | 96% | 34,432 psi | 54% | 2661 fps | 95.5% |
| Norma MRP | <<locked>> | 80% | 35,534 psi | 56% | 2651 fps | 96.2% |
| Norma URP | <<locked>> | 80% | 45,020 psi | 71% | 2776 fps | 99.9% |
| Ramshot Grand | 79 gr | 86% | 39,885 psi | 63% | 2749 fps | 95.2% |
| Ramshot Hunter | <<locked>> | 80% | 43,947 psi | 69% | 2772 fps | 99.2% |
| Ramshot Magnum | <<locked>> | 86% | 35,491 psi | 56% | 2618 fps | 95.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,268 psi | 44% | 1706 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 45,905 psi | 72% | 2812 fps | 99.9% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 44,193 psi | 69% | 2828 fps | 99.9% |
| ReloadSwiss RS 76 | <<locked>> | 86% | 33,040 psi | 52% | 2625 fps | 95.2% |
| ReloadSwiss RS 80 | <<locked>> | 98% | 46,456 psi | 73% | 2927 fps | 95.9% |
| Rottweil R 903 | <<locked>> | 80% | 52,852 psi | 83% | 2854 fps | 100% |
| Rottweil R 904 | <<locked>> | 82% | 42,322 psi | 66% | 2700 fps | 95.8% |
| Rottweil R 905 | <<locked>> | 80% | 37,492 psi | 59% | 2635 fps | 95.5% |
| Rottweil R 907 | <<locked>> | 80% | 48,457 psi | 76% | 2795 fps | 99% |
| Shooters World Long Rifle | <<locked>> | 80% | 47,398 psi | 74% | 2769 fps | 99.8% |
| Shooters World SW4350 | <<locked>> | 80% | 45,745 psi | 72% | 2756 fps | 99.1% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 52,939 psi | 83% | 2733 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 46,383 psi | 73% | 2717 fps | 99.1% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 37,173 psi | 58% | 2628 fps | 95.4% |
| Somchem S355 | <<locked>> | 80% | 52,605 psi | 82% | 2851 fps | 100% |
| Somchem S361 | <<locked>> | 82% | 43,134 psi | 68% | 2687 fps | 95.1% |
| Somchem S365 | <<locked>> | 80% | 42,047 psi | 66% | 2730 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 37,971 psi | 60% | 2618 fps | 96.7% |
| Vihtavuori N150 | <<locked>> | 80% | 50,430 psi | 79% | 2772 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 46,557 psi | 73% | 2776 fps | 100% |
| Vihtavuori N165 | <<locked>> | 82% | 35,186 psi | 55% | 2546 fps | 95.3% |
| Vihtavuori N550 | <<locked>> | 80% | 45,788 psi | 72% | 2776 fps | 99.9% |
| Vihtavuori N555 | <<locked>> | 80% | 36,666 psi | 57% | 2628 fps | 99.3% |
| Vihtavuori N560 | <<locked>> | 86% | 44,396 psi | 70% | 2838 fps | 95.7% |
| Vihtavuori N565 | <<locked>> | 90% | 41,321 psi | 65% | 2759 fps | 95% |
| Vihtavuori N568 | <<locked>> | 98% | 47,805 psi | 75% | 2936 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 45,730 psi | 72% | 2733 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 47,761 psi | 75% | 2844 fps | 99.3% |
| Winchester StaBALL HD | <<locked>> | 80% | 28,964 psi | 45% | 2559 fps | 99.5% |
| Winchester Supreme 780 | <<locked>> | 82% | 37,289 psi | 58% | 2602 fps | 95.3% |
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 | 180gr | Peregrine Bushmaster (VRG-3). Hodgdon Retumbo delivers the highest muzzle velocity at 3,127 fps; across all powders the maximum-charge window runs from 1,864 fps to 3,127 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 58–90 %, leaving at least 10 % headroom. The 180.0 gr projectile in 0.308" calls for a 1:13.0 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. Ramshot Grand, Accurate MAGPRO, Alliant Reloder-26 rank at the top here: for .300 Norma Mag. with the .308 | 180gr | Peregrine Bushmaster (VRG-3) 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.