Load Specifications
Load data in caliber .300 Norma Mag. with .308 | 180gr | Fox Classic Hunter bullet and 74 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% | 56,202 psi | 88% | 2946 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 57,522 psi | 90% | 2979 fps | 100% |
| Accurate MAGPRO | <<locked>> | 92% | 55,201 psi | 87% | 3045 fps | 97.8% |
| ADI AR 2209 | <<locked>> | 90% | 54,897 psi | 86% | 2986 fps | 99.3% |
| ADI AR 2213 | <<locked>> | 94% | 56,536 psi | 89% | 3051 fps | 98.9% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 50,647 psi | 79% | 2943 fps | 98.2% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 45,150 psi | 71% | 2897 fps | 99.5% |
| Alliant Power Pro Varmint | <<locked>> | 90% | 55,027 psi | 86% | 2979 fps | 99.3% |
| Alliant Reloder-16 | <<locked>> | 86% | 55,071 psi | 86% | 2986 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 82% | 55,999 psi | 88% | 2995 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 90% | 54,360 psi | 85% | 2972 fps | 99.3% |
| Alliant Reloder-22 | <<locked>> | 94% | 56,521 psi | 89% | 3041 fps | 99.6% |
| Alliant Reloder-23 | <<locked>> | 94% | 54,041 psi | 85% | 2959 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 57,305 psi | 90% | 3077 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 90% | 54,201 psi | 85% | 3041 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 94% | 54,563 psi | 86% | 2949 fps | 96% |
| Bofors RP15 | <<locked>> | 96% | 55,463 psi | 87% | 3025 fps | 99.4% |
| Bofors RP30ᴾ | <<locked>> | 100% | 53,142 psi | 83% | 3015 fps | 98.8% |
| Bofors RP5 | <<locked>> | 94% | 56,521 psi | 89% | 3041 fps | 99.6% |
| Bofors RP7 | <<locked>> | 84% | 56,086 psi | 88% | 2927 fps | 99.8% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 55,869 psi | 88% | 3035 fps | 99.4% |
| Hodgdon H414 | <<locked>> | 84% | 55,637 psi | 87% | 2982 fps | 99.9% |
| Hodgdon H4350 | <<locked>> | 82% | 54,563 psi | 86% | 2940 fps | 99.4% |
| Hodgdon H4831 | <<locked>> | 92% | 56,289 psi | 88% | 2986 fps | 98.3% |
| Hodgdon H4831 SC | <<locked>> | 92% | 55,056 psi | 86% | 2966 fps | 98.1% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 55,143 psi | 86% | 2907 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 56,202 psi | 88% | 3153 fps | 100% |
| Hodgdon Superformance | <<locked>> | 84% | 56,086 psi | 88% | 3018 fps | 99.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,101 psi | 58% | 1870 fps | 100% |
| IMR 4350 | <<locked>> | 86% | 54,418 psi | 85% | 2917 fps | 99.7% |
| IMR 4451 Enduron | <<locked>> | 84% | 57,638 psi | 90% | 2953 fps | 100% |
| IMR 4831 | <<locked>> | 86% | 54,230 psi | 85% | 2917 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 57,217 psi | 90% | 2969 fps | 98.6% |
| IMR 7828 SSC | <<locked>> | 94% | 54,288 psi | 85% | 3025 fps | 98.6% |
| Lovex S065 | <<locked>> | 84% | 54,607 psi | 86% | 2894 fps | 100% |
| Lovex S070 | <<locked>> | 86% | 56,449 psi | 88% | 2946 fps | 100% |
| Lovex S071ᴾ | <<locked>> | 100% | 57,276 psi | 90% | 2963 fps | 100% |
| Norma 204 | <<locked>> | 86% | 55,245 psi | 87% | 2969 fps | 99.3% |
| Norma 217ᴾ | <<locked>> | 100% | 40,640 psi | 64% | 2815 fps | 98% |
| Norma MRP | <<locked>> | 92% | 56,289 psi | 88% | 3061 fps | 100% |
| Norma URP | <<locked>> | 86% | 56,057 psi | 88% | 2966 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 55,056 psi | 86% | 3048 fps | 99% |
| Ramshot Hunter | <<locked>> | 86% | 54,810 psi | 86% | 2966 fps | 100% |
| Ramshot Magnum | <<locked>> | 98% | 57,740 psi | 90% | 3041 fps | 99.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,927 psi | 59% | 1916 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 57,725 psi | 90% | 3005 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 56,347 psi | 88% | 3035 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 57,014 psi | 89% | 3150 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 51,764 psi | 81% | 3022 fps | 97.4% |
| Rottweil R 903 | <<locked>> | 82% | 57,435 psi | 90% | 2927 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 56,028 psi | 88% | 2956 fps | 98.8% |
| Rottweil R 905 | <<locked>> | 92% | 57,609 psi | 90% | 3022 fps | 99.7% |
| Rottweil R 907 | <<locked>> | 84% | 56,086 psi | 88% | 2927 fps | 99.8% |
| Shooters World Long Rifle | <<locked>> | 84% | 54,607 psi | 86% | 2894 fps | 100% |
| Shooters World SW4350 | <<locked>> | 86% | 56,449 psi | 88% | 2946 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 57,014 psi | 89% | 2792 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 57,508 psi | 90% | 2904 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 57,174 psi | 90% | 3015 fps | 99.6% |
| Somchem S355 | <<locked>> | 82% | 57,072 psi | 89% | 2920 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 57,493 psi | 90% | 2946 fps | 98.4% |
| Somchem S365 | <<locked>> | 88% | 56,637 psi | 89% | 2966 fps | 100% |
| Somchem S385 | <<locked>> | 90% | 54,244 psi | 85% | 2933 fps | 99.7% |
| Vihtavuori N150 | <<locked>> | 82% | 54,752 psi | 86% | 2838 fps | 100% |
| Vihtavuori N160 | <<locked>> | 84% | 54,128 psi | 85% | 2904 fps | 100% |
| Vihtavuori N165 | <<locked>> | 96% | 57,580 psi | 90% | 2969 fps | 99.8% |
| Vihtavuori N550 | <<locked>> | 86% | 56,898 psi | 89% | 2959 fps | 100% |
| Vihtavuori N555 | <<locked>> | 92% | 56,057 psi | 88% | 2986 fps | 100% |
| Vihtavuori N560 | <<locked>> | 92% | 56,057 psi | 88% | 3058 fps | 98.5% |
| Vihtavuori N565 | <<locked>> | 98% | 56,043 psi | 88% | 3038 fps | 98.7% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 52,939 psi | 83% | 3031 fps | 97.1% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 57,421 psi | 90% | 2910 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 55,840 psi | 88% | 2986 fps | 99.9% |
| Winchester StaBALL HD | <<locked>> | 96% | 56,086 psi | 88% | 3094 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 54,157 psi | 85% | 2927 fps | 99.2% |
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% | 34,664 psi | 54% | 2539 fps | 97.2% |
| Accurate 4350 | <<locked>> | 80% | 46,760 psi | 73% | 2808 fps | 100% |
| Accurate MAGPRO | 82.7 gr | 86% | 44,425 psi | 70% | 2841 fps | 95.1% |
| ADI AR 2209 | <<locked>> | 80% | 39,059 psi | 61% | 2677 fps | 95.9% |
| ADI AR 2213 | <<locked>> | 86% | 42,670 psi | 67% | 2785 fps | 95.8% |
| ADI AR 2217 | <<locked>> | 94% | 41,133 psi | 64% | 2749 fps | 95.6% |
| ADI AR 2225 | <<locked>> | 90% | 32,271 psi | 51% | 2572 fps | 95.1% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 39,450 psi | 62% | 2677 fps | 96.1% |
| Alliant Reloder-16 | <<locked>> | 80% | 44,991 psi | 71% | 2815 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 80% | 52,112 psi | 82% | 2936 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 39,059 psi | 61% | 2671 fps | 96% |
| Alliant Reloder-22 | <<locked>> | 82% | 37,347 psi | 59% | 2667 fps | 95.5% |
| Alliant Reloder-23 | <<locked>> | 80% | 33,460 psi | 52% | 2569 fps | 99.6% |
| Alliant Reloder-25 | <<locked>> | 80% | 29,008 psi | 45% | 2467 fps | 95.4% |
| Alliant Reloder-26 | 77.8 gr | 80% | 36,811 psi | 58% | 2710 fps | 99% |
| Baschieri & Pellagri 109 | <<locked>> | 92% | 51,068 psi | 80% | 2887 fps | 95% |
| Bofors RP15 | <<locked>> | 84% | 37,144 psi | 58% | 2661 fps | 95.2% |
| Bofors RP30 | <<locked>> | 92% | 40,074 psi | 63% | 2759 fps | 95.6% |
| Bofors RP5 | <<locked>> | 82% | 37,347 psi | 59% | 2667 fps | 95.5% |
| Bofors RP7 | <<locked>> | 80% | 49,269 psi | 77% | 2812 fps | 99.2% |
| Hodgdon H1000 | <<locked>> | 90% | 39,320 psi | 62% | 2710 fps | 95.6% |
| Hodgdon H414 | <<locked>> | 80% | 48,602 psi | 76% | 2861 fps | 99.4% |
| Hodgdon H4350 | <<locked>> | 80% | 51,155 psi | 80% | 2881 fps | 99% |
| Hodgdon H4831 | <<locked>> | 84% | 42,641 psi | 67% | 2733 fps | 95.1% |
| Hodgdon H4831 SC | <<locked>> | 86% | 44,802 psi | 70% | 2779 fps | 95.8% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 42,250 psi | 66% | 2694 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 88% | 37,072 psi | 58% | 2746 fps | 96.1% |
| Hodgdon Superformance | <<locked>> | 80% | 48,298 psi | 76% | 2884 fps | 99.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,746 psi | 43% | 1673 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 44,860 psi | 70% | 2746 fps | 98.5% |
| IMR 4451 Enduron | <<locked>> | 80% | 50,792 psi | 80% | 2841 fps | 99.6% |
| IMR 4831 | <<locked>> | 80% | 44,425 psi | 70% | 2753 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 84% | 44,280 psi | 69% | 2736 fps | 95.8% |
| IMR 7828 SSC | <<locked>> | 86% | 41,046 psi | 64% | 2762 fps | 95.3% |
| Lovex S065 | <<locked>> | 80% | 48,211 psi | 76% | 2785 fps | 99.8% |
| Lovex S070 | <<locked>> | 80% | 46,543 psi | 73% | 2776 fps | 99.3% |
| Lovex S071 | <<locked>> | 80% | 29,617 psi | 46% | 2405 fps | 95.1% |
| Norma 204 | <<locked>> | 80% | 44,904 psi | 70% | 2782 fps | 97.5% |
| Norma 217 | <<locked>> | 96% | 35,302 psi | 55% | 2684 fps | 96% |
| Norma MRP | <<locked>> | 80% | 36,434 psi | 57% | 2671 fps | 96.6% |
| Norma URP | <<locked>> | 80% | 45,890 psi | 72% | 2795 fps | 100% |
| Ramshot Grand | 80.5 gr | 86% | 40,872 psi | 64% | 2772 fps | 95.7% |
| Ramshot Hunter | <<locked>> | 80% | 44,730 psi | 70% | 2789 fps | 99.4% |
| Ramshot Magnum | <<locked>> | 86% | 36,361 psi | 57% | 2641 fps | 96.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,398 psi | 45% | 1713 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 46,746 psi | 73% | 2828 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 45,165 psi | 71% | 2848 fps | 99.9% |
| ReloadSwiss RS 76 | <<locked>> | 86% | 33,823 psi | 53% | 2651 fps | 95.8% |
| ReloadSwiss RS 80 | <<locked>> | 96% | 44,266 psi | 69% | 2877 fps | 95.3% |
| Rottweil R 903 | <<locked>> | 80% | 53,780 psi | 84% | 2871 fps | 100% |
| Rottweil R 904 | <<locked>> | 80% | 40,263 psi | 63% | 2657 fps | 95.2% |
| Rottweil R 905 | <<locked>> | 80% | 38,276 psi | 60% | 2654 fps | 95.9% |
| Rottweil R 907 | <<locked>> | 80% | 49,269 psi | 77% | 2812 fps | 99.2% |
| Shooters World Long Rifle | <<locked>> | 80% | 48,211 psi | 76% | 2785 fps | 99.8% |
| Shooters World SW4350 | <<locked>> | 80% | 46,543 psi | 73% | 2776 fps | 99.3% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 53,621 psi | 84% | 2746 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 47,079 psi | 74% | 2733 fps | 99.3% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 37,942 psi | 59% | 2648 fps | 95.8% |
| Somchem S355 | <<locked>> | 80% | 53,490 psi | 84% | 2867 fps | 100% |
| Somchem S361 | <<locked>> | 82% | 43,874 psi | 69% | 2707 fps | 95.5% |
| Somchem S365 | <<locked>> | 80% | 42,960 psi | 67% | 2749 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 38,841 psi | 61% | 2641 fps | 97% |
| Vihtavuori N150 | <<locked>> | 80% | 51,271 psi | 80% | 2789 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 47,384 psi | 74% | 2792 fps | 100% |
| Vihtavuori N165 | <<locked>> | 82% | 35,998 psi | 56% | 2566 fps | 95.7% |
| Vihtavuori N550 | <<locked>> | 80% | 46,572 psi | 73% | 2789 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 37,536 psi | 59% | 2648 fps | 99.5% |
| Vihtavuori N560 | <<locked>> | 84% | 42,322 psi | 66% | 2795 fps | 95.1% |
| Vihtavuori N565 | <<locked>> | 90% | 42,337 psi | 66% | 2782 fps | 95.5% |
| Vihtavuori N568 | <<locked>> | 96% | 45,672 psi | 72% | 2894 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 46,601 psi | 73% | 2749 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 48,602 psi | 76% | 2861 fps | 99.4% |
| Winchester StaBALL HD | <<locked>> | 80% | 29,602 psi | 46% | 2579 fps | 99.7% |
| Winchester Supreme 780 | <<locked>> | 82% | 38,130 psi | 60% | 2621 fps | 95.7% |
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 74 powders for .300 Norma Mag. loaded with the .308 | 180gr | Fox Classic Hunter. Hodgdon Retumbo delivers the highest muzzle velocity at 3,153 fps; across all powders the maximum-charge window runs from 1,870 fps to 3,153 fps. ADI AR 2217 gives the best case fill at 100 %, and 74 of the 74 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 1:10.5 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 | Fox Classic Hunter 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.