Load Specifications
Load data in caliber .300 Norma Mag. with .308 | 170gr | Sako Blade bullet and 74 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Winchester StaBALL HD, IMR 7828 SSC and Norma MRP.
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>> | 96% | 57,551 psi | 90% | 3038 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 54,882 psi | 86% | 3018 fps | 100% |
| Accurate MAGPRO | <<locked>> | 94% | 56,289 psi | 88% | 3136 fps | 97.5% |
| ADI AR 2208 | <<locked>> | 82% | 56,246 psi | 88% | 2986 fps | 100% |
| ADI AR 2209 | <<locked>> | 92% | 56,144 psi | 88% | 3077 fps | 99.1% |
| ADI AR 2213 | <<locked>> | 96% | 57,725 psi | 90% | 3143 fps | 98.6% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 48,167 psi | 75% | 2963 fps | 97% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 42,844 psi | 67% | 2913 fps | 98.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 57,566 psi | 90% | 3009 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 88% | 56,275 psi | 88% | 3084 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 84% | 57,363 psi | 90% | 3097 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 92% | 55,709 psi | 87% | 3068 fps | 99.1% |
| Alliant Reloder-22 | <<locked>> | 96% | 57,537 psi | 90% | 3136 fps | 99.4% |
| Alliant Reloder-23 | <<locked>> | 96% | 54,926 psi | 86% | 3051 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 54,317 psi | 85% | 3110 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 92% | 55,317 psi | 87% | 3136 fps | 100% |
| Bofors RP15 | <<locked>> | 98% | 56,434 psi | 88% | 3117 fps | 99.2% |
| Bofors RP30ᴾ | <<locked>> | 100% | 50,212 psi | 79% | 3035 fps | 97.8% |
| Bofors RP5 | <<locked>> | 96% | 57,537 psi | 90% | 3136 fps | 99.4% |
| Bofors RP7 | <<locked>> | 86% | 57,595 psi | 90% | 3025 fps | 99.7% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 53,316 psi | 84% | 3061 fps | 98.7% |
| Hodgdon H414 | <<locked>> | 86% | 57,058 psi | 89% | 3081 fps | 99.9% |
| Hodgdon H4350 | <<locked>> | 84% | 55,927 psi | 88% | 3035 fps | 99.3% |
| Hodgdon H4831 | <<locked>> | 94% | 57,566 psi | 90% | 3077 fps | 98% |
| Hodgdon H4831 SC | <<locked>> | 94% | 56,507 psi | 89% | 3061 fps | 97.8% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 56,405 psi | 88% | 3002 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 53,214 psi | 83% | 3176 fps | 99.6% |
| Hodgdon Superformance | <<locked>> | 84% | 53,650 psi | 84% | 3051 fps | 99.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,912 psi | 58% | 1919 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 55,738 psi | 87% | 3009 fps | 99.6% |
| IMR 4451 Enduron | <<locked>> | 84% | 55,593 psi | 87% | 2995 fps | 99.7% |
| IMR 4831 | <<locked>> | 88% | 55,419 psi | 87% | 3012 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 54,969 psi | 86% | 3002 fps | 97.7% |
| IMR 7828 SSC | <<locked>> | 96% | 55,347 psi | 87% | 3114 fps | 98.3% |
| Lovex S065 | <<locked>> | 86% | 55,999 psi | 88% | 2992 fps | 100% |
| Lovex S070 | <<locked>> | 86% | 54,230 psi | 85% | 2986 fps | 99.7% |
| Lovex S071ᴾ | <<locked>> | 100% | 54,723 psi | 86% | 2999 fps | 100% |
| Norma 204 | <<locked>> | 88% | 56,739 psi | 89% | 3064 fps | 99.1% |
| Norma 217ᴾ | <<locked>> | 100% | 38,203 psi | 60% | 2822 fps | 96.5% |
| Norma MRP | <<locked>> | 94% | 57,653 psi | 90% | 3159 fps | 99.9% |
| Norma URP | <<locked>> | 88% | 57,334 psi | 90% | 3061 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 56,260 psi | 88% | 3140 fps | 98.8% |
| Ramshot Hunter | <<locked>> | 88% | 56,130 psi | 88% | 3064 fps | 100% |
| Ramshot Magnum | <<locked>> | 98% | 54,505 psi | 85% | 3068 fps | 99.5% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,695 psi | 59% | 1965 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 56,884 psi | 89% | 3084 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 55,056 psi | 86% | 3041 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 57,609 psi | 90% | 3133 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 54,012 psi | 85% | 3173 fps | 100% |
| Rottweil R 903 | <<locked>> | 82% | 55,114 psi | 86% | 2972 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 57,377 psi | 90% | 3048 fps | 98.5% |
| Rottweil R 905 | <<locked>> | 92% | 54,984 psi | 86% | 3054 fps | 99.1% |
| Rottweil R 907 | <<locked>> | 86% | 57,595 psi | 90% | 3025 fps | 99.7% |
| Shooters World Long Rifle | <<locked>> | 86% | 55,999 psi | 88% | 2992 fps | 100% |
| Shooters World SW4350 | <<locked>> | 86% | 54,230 psi | 85% | 2986 fps | 99.7% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 56,840 psi | 89% | 3031 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 55,303 psi | 87% | 2844 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 55,376 psi | 87% | 2943 fps | 99.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 54,549 psi | 85% | 3048 fps | 99% |
| Somchem S355 | <<locked>> | 82% | 54,897 psi | 86% | 2966 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 55,347 psi | 87% | 2982 fps | 97.6% |
| Somchem S365 | <<locked>> | 90% | 57,740 psi | 90% | 3064 fps | 100% |
| Somchem S385 | <<locked>> | 92% | 55,564 psi | 87% | 3025 fps | 99.6% |
| Vihtavuori N150 | <<locked>> | 84% | 56,217 psi | 88% | 2940 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 55,376 psi | 87% | 2999 fps | 100% |
| Vihtavuori N165 | <<locked>> | 96% | 55,201 psi | 87% | 3005 fps | 99.4% |
| Vihtavuori N550 | <<locked>> | 86% | 54,549 psi | 85% | 3002 fps | 100% |
| Vihtavuori N555 | <<locked>> | 94% | 57,043 psi | 89% | 3077 fps | 100% |
| Vihtavuori N560 | <<locked>> | 94% | 57,450 psi | 90% | 3153 fps | 98.2% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 56,869 psi | 89% | 3123 fps | 98.3% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 54,998 psi | 86% | 2956 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 57,058 psi | 89% | 3081 fps | 99.9% |
| Winchester StaBALL HD | <<locked>> | 98% | 56,710 psi | 89% | 3189 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 55,579 psi | 87% | 3022 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% | 32,880 psi | 52% | 2556 fps | 95.9% |
| Accurate 4350 | <<locked>> | 80% | 44,527 psi | 70% | 2838 fps | 99.8% |
| Accurate MAGPRO | <<locked>> | 90% | 48,791 psi | 76% | 2999 fps | 95.7% |
| ADI AR 2208 | <<locked>> | 80% | 52,924 psi | 83% | 2933 fps | 100% |
| ADI AR 2209 | <<locked>> | 82% | 39,943 psi | 63% | 2762 fps | 95.5% |
| ADI AR 2213 | <<locked>> | 88% | 43,758 psi | 69% | 2877 fps | 95.3% |
| ADI AR 2217 | <<locked>> | 96% | 41,974 psi | 66% | 2831 fps | 95% |
| ADI AR 2225 | <<locked>> | 94% | 34,983 psi | 55% | 2710 fps | 95.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 53,940 psi | 85% | 2953 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 42,902 psi | 67% | 2848 fps | 99.9% |
| Alliant Reloder-17 | <<locked>> | 80% | 49,632 psi | 78% | 2976 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 82% | 39,900 psi | 63% | 2759 fps | 95.6% |
| Alliant Reloder-22 | <<locked>> | 84% | 37,956 psi | 59% | 2749 fps | 95% |
| Alliant Reloder-23 | <<locked>> | 80% | 31,691 psi | 50% | 2589 fps | 98.8% |
| Alliant Reloder-25 | <<locked>> | 84% | 31,575 psi | 49% | 2608 fps | 96% |
| Alliant Reloder-26 | <<locked>> | 80% | 34,664 psi | 54% | 2723 fps | 98% |
| Bofors RP15 | <<locked>> | 88% | 40,451 psi | 63% | 2805 fps | 95.7% |
| Bofors RP30 | <<locked>> | 94% | 40,669 psi | 64% | 2841 fps | 95.1% |
| Bofors RP5 | <<locked>> | 84% | 37,956 psi | 59% | 2749 fps | 95% |
| Bofors RP7 | <<locked>> | 80% | 47,587 psi | 75% | 2851 fps | 98.5% |
| Hodgdon H1000 | <<locked>> | 92% | 40,248 psi | 63% | 2792 fps | 95.1% |
| Hodgdon H414 | <<locked>> | 80% | 46,485 psi | 73% | 2894 fps | 98.8% |
| Hodgdon H4350 | <<locked>> | 80% | 49,124 psi | 77% | 2913 fps | 98.3% |
| Hodgdon H4831 | <<locked>> | 88% | 46,804 psi | 73% | 2887 fps | 95.6% |
| Hodgdon H4831 SC | <<locked>> | 88% | 45,919 psi | 72% | 2867 fps | 95.4% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 40,306 psi | 63% | 2726 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 90% | 37,768 psi | 59% | 2825 fps | 95.5% |
| Hodgdon Superformance | <<locked>> | 80% | 46,122 psi | 72% | 2917 fps | 98.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,586 psi | 43% | 1716 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 43,047 psi | 67% | 2776 fps | 97.6% |
| IMR 4451 Enduron | <<locked>> | 80% | 48,965 psi | 77% | 2877 fps | 99.1% |
| IMR 4831 | <<locked>> | 80% | 42,424 psi | 66% | 2782 fps | 99.6% |
| IMR 4955 Enduron | <<locked>> | 86% | 45,339 psi | 71% | 2825 fps | 95.4% |
| IMR 7828 SSC | 81.8 gr | 90% | 45,005 psi | 71% | 2917 fps | 95.9% |
| Lovex S065 | <<locked>> | 80% | 46,354 psi | 73% | 2822 fps | 99.5% |
| Lovex S070 | <<locked>> | 80% | 44,657 psi | 70% | 2808 fps | 98.6% |
| Lovex S071 | <<locked>> | 84% | 32,256 psi | 51% | 2539 fps | 95.6% |
| Norma 204 | <<locked>> | 80% | 43,105 psi | 68% | 2812 fps | 96.4% |
| Norma 217 | <<locked>> | 98% | 35,621 psi | 56% | 2753 fps | 95.3% |
| Norma MRP | 75.5 gr | 80% | 34,490 psi | 54% | 2687 fps | 95.1% |
| Norma URP | <<locked>> | 80% | 43,888 psi | 69% | 2828 fps | 99.7% |
| Ramshot Grand | <<locked>> | 88% | 41,742 psi | 65% | 2858 fps | 95.2% |
| Ramshot Hunter | <<locked>> | 80% | 42,873 psi | 67% | 2822 fps | 98.7% |
| Ramshot Magnum | <<locked>> | 88% | 37,086 psi | 58% | 2720 fps | 95.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,195 psi | 44% | 1759 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 52,837 psi | 83% | 3025 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 44,672 psi | 70% | 2861 fps | 99.7% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 42,946 psi | 67% | 2874 fps | 99.5% |
| ReloadSwiss RS 76 | <<locked>> | 88% | 34,548 psi | 54% | 2730 fps | 95.2% |
| Rottweil R 903 | <<locked>> | 80% | 51,576 psi | 81% | 2913 fps | 100% |
| Rottweil R 904 | <<locked>> | 84% | 44,092 psi | 69% | 2805 fps | 95.7% |
| Rottweil R 905 | <<locked>> | 82% | 39,044 psi | 61% | 2736 fps | 95.5% |
| Rottweil R 907 | <<locked>> | 80% | 47,587 psi | 75% | 2851 fps | 98.5% |
| Shooters World Long Rifle | <<locked>> | 80% | 46,354 psi | 73% | 2822 fps | 99.5% |
| Shooters World SW4350 | <<locked>> | 80% | 44,657 psi | 70% | 2808 fps | 98.6% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 53,287 psi | 84% | 2976 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 51,967 psi | 81% | 2799 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 45,310 psi | 71% | 2766 fps | 98.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 82% | 38,711 psi | 61% | 2733 fps | 95.3% |
| Somchem S355 | <<locked>> | 80% | 51,445 psi | 81% | 2910 fps | 100% |
| Somchem S361 | <<locked>> | 84% | 45,136 psi | 71% | 2795 fps | 95.1% |
| Somchem S365 | <<locked>> | 80% | 40,770 psi | 64% | 2782 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 37,043 psi | 58% | 2661 fps | 95.7% |
| Vihtavuori N150 | <<locked>> | 80% | 49,313 psi | 77% | 2835 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 45,368 psi | 71% | 2828 fps | 99.8% |
| Vihtavuori N165 | <<locked>> | 84% | 36,709 psi | 58% | 2644 fps | 95.2% |
| Vihtavuori N550 | <<locked>> | 80% | 44,744 psi | 70% | 2828 fps | 99.7% |
| Vihtavuori N555 | <<locked>> | 80% | 35,592 psi | 56% | 2671 fps | 98.8% |
| Vihtavuori N560 | <<locked>> | 88% | 46,383 psi | 73% | 2953 fps | 95.7% |
| Vihtavuori N565 | <<locked>> | 92% | 43,062 psi | 67% | 2864 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 44,556 psi | 70% | 2785 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 46,659 psi | 73% | 2897 fps | 98.8% |
| Winchester StaBALL HD | 74.8 gr | 80% | 28,094 psi | 44% | 2582 fps | 98.6% |
| Winchester Supreme 780 | <<locked>> | 84% | 38,914 psi | 61% | 2703 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 81 powders for .300 Norma Mag. loaded with the .308 | 170gr | Sako Blade. Winchester StaBALL HD delivers the highest muzzle velocity at 3,189 fps; across all powders the maximum-charge window runs from 1,919 fps to 3,189 fps. ADI AR 2217 gives the best case fill at 100 %, and 81 of the 81 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 170.0 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. Winchester StaBALL HD, IMR 7828 SSC, Norma MRP rank at the top here: for .300 Norma Mag. with the .308 | 170gr | Sako Blade they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, IMR 7977 Enduron, IMR 8133 Enduron, Vihtavuori N170 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.