Load Specifications
Load data in caliber .300 Norma Mag. with .308 | 165gr | Barnes BND SPIT-FIRE bullet and 71 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Winchester StaBALL HD, Norma MRP 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>> | 94% | 54,824 psi | 86% | 3035 fps | 99.9% |
| Accurate 4350 | <<locked>> | 86% | 56,159 psi | 88% | 3074 fps | 100% |
| Accurate MAGPRO | <<locked>> | 94% | 57,392 psi | 90% | 3189 fps | 97.5% |
| ADI AR 2208 | <<locked>> | 82% | 57,000 psi | 89% | 3035 fps | 100% |
| ADI AR 2209 | <<locked>> | 92% | 56,869 psi | 89% | 3130 fps | 99.1% |
| ADI AR 2213 | <<locked>> | 94% | 54,795 psi | 86% | 3130 fps | 97.9% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 49,182 psi | 77% | 3015 fps | 97% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 43,874 psi | 69% | 2966 fps | 98.7% |
| Alliant Reloder-16 | <<locked>> | 88% | 56,942 psi | 89% | 3133 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 82% | 54,346 psi | 85% | 3091 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 92% | 56,449 psi | 88% | 3117 fps | 99% |
| Alliant Reloder-22 | <<locked>> | 94% | 54,781 psi | 86% | 3127 fps | 98.9% |
| Alliant Reloder-23 | <<locked>> | 96% | 55,970 psi | 88% | 3104 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 55,390 psi | 87% | 3163 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 92% | 56,420 psi | 88% | 3192 fps | 100% |
| Bofors RP15 | <<locked>> | 98% | 57,406 psi | 90% | 3169 fps | 99.2% |
| Bofors RP30ᴾ | <<locked>> | 100% | 51,358 psi | 80% | 3091 fps | 97.8% |
| Bofors RP5 | <<locked>> | 94% | 54,781 psi | 86% | 3127 fps | 98.9% |
| Bofors RP7 | <<locked>> | 84% | 54,868 psi | 86% | 3018 fps | 99.4% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 54,273 psi | 85% | 3114 fps | 98.7% |
| Hodgdon H414 | <<locked>> | 84% | 54,201 psi | 85% | 3071 fps | 99.6% |
| Hodgdon H4350 | <<locked>> | 84% | 56,768 psi | 89% | 3087 fps | 99.2% |
| Hodgdon H4831 | <<locked>> | 92% | 54,708 psi | 86% | 3064 fps | 97.3% |
| Hodgdon H4831 SC | <<locked>> | 94% | 57,377 psi | 90% | 3110 fps | 97.8% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 57,348 psi | 90% | 3054 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 54,230 psi | 85% | 3228 fps | 99.6% |
| Hodgdon Superformance | <<locked>> | 84% | 54,418 psi | 85% | 3104 fps | 99.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,057 psi | 58% | 1952 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 56,521 psi | 89% | 3058 fps | 99.6% |
| IMR 4451 Enduron | <<locked>> | 84% | 56,260 psi | 88% | 3045 fps | 99.7% |
| IMR 4831 | <<locked>> | 88% | 56,463 psi | 88% | 3068 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 55,637 psi | 87% | 3051 fps | 97.6% |
| IMR 7828 SSC | <<locked>> | 96% | 56,420 psi | 88% | 3169 fps | 98.3% |
| Lovex S065 | <<locked>> | 86% | 57,029 psi | 89% | 3045 fps | 100% |
| Lovex S070 | <<locked>> | 86% | 55,129 psi | 86% | 3035 fps | 99.7% |
| Lovex S071ᴾ | <<locked>> | 100% | 56,057 psi | 88% | 3054 fps | 100% |
| Norma 204 | <<locked>> | 88% | 57,725 psi | 90% | 3120 fps | 99.1% |
| Norma 217ᴾ | <<locked>> | 100% | 39,450 psi | 62% | 2884 fps | 96.7% |
| Norma MRP | <<locked>> | 92% | 54,636 psi | 86% | 3150 fps | 99.7% |
| Norma URP | <<locked>> | 86% | 54,505 psi | 85% | 3054 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 57,101 psi | 89% | 3189 fps | 98.7% |
| Ramshot Hunter | <<locked>> | 88% | 57,174 psi | 90% | 3120 fps | 100% |
| Ramshot Magnum | <<locked>> | 98% | 55,535 psi | 87% | 3120 fps | 99.5% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,855 psi | 59% | 1998 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 56,260 psi | 88% | 3100 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 54,360 psi | 85% | 3123 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 55,158 psi | 86% | 3228 fps | 100% |
| Rottweil R 903 | <<locked>> | 82% | 56,246 psi | 88% | 3025 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 54,549 psi | 85% | 3038 fps | 97.9% |
| Rottweil R 905 | <<locked>> | 92% | 56,043 psi | 88% | 3107 fps | 99.1% |
| Rottweil R 907 | <<locked>> | 84% | 54,868 psi | 86% | 3018 fps | 99.4% |
| Shooters World Long Rifle | <<locked>> | 86% | 57,029 psi | 89% | 3045 fps | 100% |
| Shooters World SW4350 | <<locked>> | 86% | 55,129 psi | 86% | 3035 fps | 99.7% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 55,956 psi | 88% | 2894 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 56,362 psi | 88% | 2995 fps | 99.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 55,608 psi | 87% | 3100 fps | 99% |
| Somchem S355 | <<locked>> | 82% | 55,898 psi | 88% | 3018 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 56,217 psi | 88% | 3028 fps | 97.5% |
| Somchem S365 | <<locked>> | 88% | 54,984 psi | 86% | 3061 fps | 100% |
| Somchem S385 | <<locked>> | 92% | 56,478 psi | 89% | 3077 fps | 99.5% |
| Vihtavuori N150 | <<locked>> | 84% | 57,101 psi | 89% | 2989 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 56,333 psi | 88% | 3051 fps | 100% |
| Vihtavuori N165 | <<locked>> | 96% | 56,115 psi | 88% | 3058 fps | 99.4% |
| Vihtavuori N550 | <<locked>> | 86% | 55,535 psi | 87% | 3054 fps | 100% |
| Vihtavuori N555 | <<locked>> | 92% | 54,462 psi | 85% | 3074 fps | 100% |
| Vihtavuori N560 | <<locked>> | 92% | 54,433 psi | 85% | 3140 fps | 97.5% |
| Vihtavuori N565 | <<locked>> | 98% | 54,360 psi | 85% | 3117 fps | 97.7% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 55,912 psi | 88% | 3005 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 54,201 psi | 85% | 3071 fps | 99.6% |
| Winchester StaBALL HD | <<locked>> | 96% | 53,635 psi | 84% | 3182 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 56,507 psi | 89% | 3074 fps | 99% |
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% | 34,142 psi | 54% | 2615 fps | 96.1% |
| Accurate 4350 | <<locked>> | 80% | 45,774 psi | 72% | 2897 fps | 99.8% |
| Accurate MAGPRO | <<locked>> | 90% | 49,792 psi | 78% | 3051 fps | 95.7% |
| ADI AR 2208 | <<locked>> | 80% | 53,563 psi | 84% | 2982 fps | 100% |
| ADI AR 2209 | <<locked>> | 82% | 40,756 psi | 64% | 2815 fps | 95.5% |
| ADI AR 2213 | <<locked>> | 88% | 44,585 psi | 70% | 2930 fps | 95.3% |
| ADI AR 2217 | <<locked>> | 96% | 42,873 psi | 67% | 2881 fps | 95% |
| ADI AR 2225 | <<locked>> | 94% | 35,984 psi | 56% | 2766 fps | 95.8% |
| Alliant Reloder-16 | <<locked>> | 80% | 43,613 psi | 68% | 2900 fps | 99.8% |
| Alliant Reloder-17 | <<locked>> | 80% | 50,647 psi | 79% | 3028 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 82% | 40,756 psi | 64% | 2808 fps | 95.6% |
| Alliant Reloder-22 | <<locked>> | 84% | 39,001 psi | 61% | 2805 fps | 95.1% |
| Alliant Reloder-23 | <<locked>> | 80% | 32,721 psi | 51% | 2644 fps | 98.9% |
| Alliant Reloder-25 | <<locked>> | 82% | 30,458 psi | 48% | 2598 fps | 95% |
| Alliant Reloder-26 | <<locked>> | 80% | 35,781 psi | 56% | 2782 fps | 98.1% |
| Bofors RP15 | <<locked>> | 88% | 41,278 psi | 65% | 2858 fps | 95.7% |
| Bofors RP30 | <<locked>> | 94% | 41,655 psi | 65% | 2894 fps | 95.2% |
| Bofors RP5 | <<locked>> | 84% | 39,001 psi | 61% | 2805 fps | 95.1% |
| Bofors RP7 | <<locked>> | 80% | 48,370 psi | 76% | 2900 fps | 98.5% |
| Hodgdon H1000 | <<locked>> | 92% | 41,046 psi | 64% | 2844 fps | 95.1% |
| Hodgdon H414 | <<locked>> | 80% | 47,369 psi | 74% | 2946 fps | 98.8% |
| Hodgdon H4350 | <<locked>> | 80% | 49,908 psi | 78% | 2963 fps | 98.2% |
| Hodgdon H4831 | <<locked>> | 88% | 47,659 psi | 75% | 2936 fps | 95.6% |
| Hodgdon H4831 SC | <<locked>> | 88% | 46,789 psi | 73% | 2917 fps | 95.3% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 41,321 psi | 65% | 2782 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 90% | 38,696 psi | 61% | 2881 fps | 95.5% |
| Hodgdon Superformance | <<locked>> | 80% | 47,007 psi | 74% | 2969 fps | 98.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,731 psi | 43% | 1749 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 43,918 psi | 69% | 2825 fps | 97.6% |
| IMR 4451 Enduron | <<locked>> | 80% | 49,763 psi | 78% | 2930 fps | 99% |
| IMR 4831 | <<locked>> | 80% | 43,497 psi | 68% | 2838 fps | 99.7% |
| IMR 4955 Enduron | <<locked>> | 86% | 46,195 psi | 72% | 2874 fps | 95.4% |
| IMR 7828 SSC | <<locked>> | 90% | 45,847 psi | 72% | 2969 fps | 95.9% |
| Lovex S065 | <<locked>> | 80% | 47,369 psi | 74% | 2874 fps | 99.5% |
| Lovex S070 | <<locked>> | 80% | 45,687 psi | 72% | 2861 fps | 98.6% |
| Lovex S071 | <<locked>> | 84% | 33,402 psi | 52% | 2595 fps | 95.8% |
| Norma 204 | <<locked>> | 80% | 43,918 psi | 69% | 2861 fps | 96.4% |
| Norma 217 | <<locked>> | 98% | 36,767 psi | 58% | 2812 fps | 95.5% |
| Norma MRP | 76.8 gr | 80% | 35,578 psi | 56% | 2746 fps | 95.3% |
| Norma URP | <<locked>> | 80% | 44,860 psi | 70% | 2881 fps | 99.7% |
| Ramshot Grand | <<locked>> | 88% | 42,627 psi | 67% | 2910 fps | 95.2% |
| Ramshot Hunter | <<locked>> | 80% | 43,758 psi | 69% | 2874 fps | 98.7% |
| Ramshot Magnum | <<locked>> | 88% | 38,174 psi | 60% | 2779 fps | 95.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,384 psi | 44% | 1791 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 45,672 psi | 72% | 2917 fps | 99.7% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 43,903 psi | 69% | 2930 fps | 99.5% |
| ReloadSwiss RS 76 | <<locked>> | 88% | 35,563 psi | 56% | 2785 fps | 95.4% |
| Rottweil R 903 | <<locked>> | 80% | 52,750 psi | 83% | 2969 fps | 100% |
| Rottweil R 904 | <<locked>> | 84% | 44,860 psi | 70% | 2854 fps | 95.6% |
| Rottweil R 905 | <<locked>> | 82% | 40,016 psi | 63% | 2792 fps | 95.5% |
| Rottweil R 907 | <<locked>> | 80% | 48,370 psi | 76% | 2900 fps | 98.5% |
| Shooters World Long Rifle | <<locked>> | 80% | 47,369 psi | 74% | 2874 fps | 99.5% |
| Shooters World SW4350 | <<locked>> | 80% | 45,687 psi | 72% | 2861 fps | 98.6% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 52,692 psi | 83% | 2848 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 46,253 psi | 72% | 2818 fps | 98.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 82% | 39,668 psi | 62% | 2785 fps | 95.4% |
| Somchem S355 | <<locked>> | 80% | 52,489 psi | 82% | 2963 fps | 100% |
| Somchem S361 | <<locked>> | 84% | 46,021 psi | 72% | 2844 fps | 95.1% |
| Somchem S365 | <<locked>> | 80% | 41,829 psi | 66% | 2838 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 38,087 psi | 60% | 2717 fps | 95.8% |
| Vihtavuori N150 | <<locked>> | 80% | 50,285 psi | 79% | 2884 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 46,296 psi | 73% | 2881 fps | 99.8% |
| Vihtavuori N165 | <<locked>> | 84% | 37,594 psi | 59% | 2697 fps | 95.3% |
| Vihtavuori N550 | <<locked>> | 80% | 45,687 psi | 72% | 2881 fps | 99.7% |
| Vihtavuori N555 | <<locked>> | 80% | 36,637 psi | 57% | 2726 fps | 98.9% |
| Vihtavuori N560 | 84.4 gr | 88% | 47,239 psi | 74% | 3002 fps | 95.7% |
| Vihtavuori N565 | <<locked>> | 92% | 44,222 psi | 69% | 2920 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 45,440 psi | 71% | 2838 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 47,529 psi | 74% | 2949 fps | 98.8% |
| Winchester StaBALL HD | 76 gr | 80% | 29,095 psi | 46% | 2648 fps | 98.9% |
| Winchester Supreme 780 | <<locked>> | 84% | 39,900 psi | 63% | 2756 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 71 powders for .300 Norma Mag. loaded with the .308 | 165gr | Barnes BND SPIT-FIRE. Hodgdon Retumbo delivers the highest muzzle velocity at 3,228 fps; across all powders the maximum-charge window runs from 1,952 fps to 3,228 fps. ADI AR 2217 gives the best case fill at 100 %, and 71 of the 71 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 165.0 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-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. Winchester StaBALL HD, Norma MRP, Vihtavuori N560 rank at the top here: for .300 Norma Mag. with the .308 | 165gr | Barnes BND SPIT-FIRE 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.