Load Specifications
Load data in caliber .300 Norma Mag. with .308 | 168gr | Norma Diamond bullet and 76 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Accurate MAGPRO, Winchester StaBALL HD 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>> | 96% | 56,898 psi | 89% | 3038 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 54,665 psi | 86% | 3025 fps | 100% |
| Accurate High Country | <<locked>> | 92% | 54,505 psi | 85% | 3127 fps | 98.1% |
| Accurate MAGPRO | <<locked>> | 94% | 55,506 psi | 87% | 3130 fps | 97.1% |
| ADI AR 2208 | <<locked>> | 82% | 55,825 psi | 87% | 2986 fps | 100% |
| ADI AR 2209 | <<locked>> | 92% | 55,521 psi | 87% | 3077 fps | 98.9% |
| ADI AR 2213 | <<locked>> | 96% | 56,985 psi | 89% | 3140 fps | 98.3% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 47,616 psi | 75% | 2956 fps | 96.6% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 42,482 psi | 67% | 2913 fps | 98.3% |
| Alliant Power Pro Varmint | <<locked>> | 92% | 55,666 psi | 87% | 3071 fps | 98.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 57,246 psi | 90% | 3015 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 88% | 55,390 psi | 87% | 3081 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 84% | 56,753 psi | 89% | 3100 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 92% | 54,969 psi | 86% | 3064 fps | 98.9% |
| Alliant Reloder-22 | <<locked>> | 96% | 56,869 psi | 89% | 3133 fps | 99.2% |
| Alliant Reloder-23 | <<locked>> | 96% | 54,186 psi | 85% | 3051 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 53,476 psi | 84% | 3107 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 92% | 54,418 psi | 85% | 3136 fps | 100% |
| Bofors RP15 | <<locked>> | 98% | 55,782 psi | 87% | 3114 fps | 99% |
| Bofors RP30ᴾ | <<locked>> | 100% | 49,516 psi | 78% | 3035 fps | 97.5% |
| Bofors RP5 | <<locked>> | 96% | 56,869 psi | 89% | 3133 fps | 99.2% |
| Bofors RP7 | <<locked>> | 86% | 57,232 psi | 90% | 3028 fps | 99.6% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 52,634 psi | 82% | 3058 fps | 98.3% |
| Hodgdon H414 | <<locked>> | 86% | 56,434 psi | 88% | 3081 fps | 99.8% |
| Hodgdon H4350 | <<locked>> | 84% | 55,434 psi | 87% | 3035 fps | 99.1% |
| Hodgdon H4831 | <<locked>> | 94% | 56,884 psi | 89% | 3074 fps | 97.7% |
| Hodgdon H4831 SC | <<locked>> | 94% | 55,811 psi | 87% | 3058 fps | 97.5% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 55,724 psi | 87% | 3002 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 52,431 psi | 82% | 3169 fps | 99.4% |
| Hodgdon Superformance | <<locked>> | 86% | 57,043 psi | 89% | 3117 fps | 99.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,028 psi | 58% | 1923 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 55,129 psi | 86% | 3005 fps | 99.4% |
| IMR 4451 Enduron | <<locked>> | 84% | 55,114 psi | 86% | 2995 fps | 99.6% |
| IMR 4831 | <<locked>> | 88% | 54,940 psi | 86% | 3015 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 54,520 psi | 85% | 3002 fps | 97.4% |
| IMR 7828 SSC | <<locked>> | 96% | 54,636 psi | 86% | 3110 fps | 98% |
| Lovex S065 | <<locked>> | 86% | 55,695 psi | 87% | 2992 fps | 100% |
| Lovex S070 | <<locked>> | 88% | 57,348 psi | 90% | 3041 fps | 99.8% |
| Lovex S071ᴾ | <<locked>> | 100% | 54,375 psi | 85% | 3002 fps | 99.9% |
| Norma 204 | <<locked>> | 88% | 56,173 psi | 88% | 3064 fps | 98.9% |
| Norma 217ᴾ | <<locked>> | 100% | 37,884 psi | 59% | 2822 fps | 96.1% |
| Norma MRP | <<locked>> | 94% | 56,681 psi | 89% | 3156 fps | 99.8% |
| Norma URP | <<locked>> | 88% | 56,666 psi | 89% | 3061 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 55,332 psi | 87% | 3133 fps | 98.4% |
| Ramshot Hunter | <<locked>> | 88% | 55,564 psi | 87% | 3064 fps | 99.9% |
| Ramshot Magnum | <<locked>> | 98% | 53,563 psi | 84% | 3061 fps | 99.3% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,710 psi | 59% | 1965 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 56,159 psi | 88% | 3087 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 54,563 psi | 86% | 3048 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 56,710 psi | 89% | 3133 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 53,055 psi | 83% | 3166 fps | 99.9% |
| Rottweil R 903 | <<locked>> | 82% | 54,984 psi | 86% | 2976 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 56,623 psi | 89% | 3045 fps | 98.2% |
| Rottweil R 905 | <<locked>> | 92% | 54,462 psi | 85% | 3051 fps | 98.9% |
| Rottweil R 907 | <<locked>> | 86% | 57,232 psi | 90% | 3028 fps | 99.6% |
| Shooters World Long Rifle | <<locked>> | 86% | 55,695 psi | 87% | 2992 fps | 100% |
| Shooters World SW4350 | <<locked>> | 88% | 57,348 psi | 90% | 3041 fps | 99.8% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 56,362 psi | 88% | 3035 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 54,897 psi | 86% | 2848 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 55,158 psi | 86% | 2946 fps | 99.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 57,595 psi | 90% | 3104 fps | 99.2% |
| Somchem S355 | <<locked>> | 82% | 54,665 psi | 86% | 2969 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 54,708 psi | 86% | 2976 fps | 97.2% |
| Somchem S365 | <<locked>> | 90% | 57,087 psi | 89% | 3064 fps | 100% |
| Somchem S385 | <<locked>> | 92% | 54,998 psi | 86% | 3025 fps | 99.4% |
| Vihtavuori N150 | <<locked>> | 84% | 55,825 psi | 87% | 2943 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 54,940 psi | 86% | 2999 fps | 100% |
| Vihtavuori N165 | <<locked>> | 96% | 54,375 psi | 85% | 3002 fps | 99.1% |
| Vihtavuori N550 | <<locked>> | 86% | 54,070 psi | 85% | 3002 fps | 100% |
| Vihtavuori N555 | <<locked>> | 94% | 56,405 psi | 88% | 3081 fps | 100% |
| Vihtavuori N560 | <<locked>> | 94% | 56,550 psi | 89% | 3150 fps | 97.9% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 56,275 psi | 88% | 3123 fps | 98% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 54,476 psi | 85% | 2959 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 56,637 psi | 89% | 3084 fps | 99.8% |
| Winchester StaBALL HD | <<locked>> | 98% | 55,245 psi | 87% | 3186 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 54,969 psi | 86% | 3022 fps | 98.8% |
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% | 33,127 psi | 52% | 2569 fps | 95.7% |
| Accurate 4350 | <<locked>> | 80% | 44,527 psi | 70% | 2848 fps | 99.7% |
| Accurate High Country | <<locked>> | 86% | 44,237 psi | 69% | 2927 fps | 95.6% |
| Accurate MAGPRO | 84.8 gr | 90% | 48,269 psi | 76% | 2999 fps | 95.3% |
| ADI AR 2208 | <<locked>> | 80% | 52,518 psi | 82% | 2936 fps | 100% |
| ADI AR 2209 | <<locked>> | 82% | 39,639 psi | 62% | 2762 fps | 95.1% |
| ADI AR 2213 | <<locked>> | 90% | 46,412 psi | 73% | 2943 fps | 95.9% |
| ADI AR 2217 | <<locked>> | 98% | 44,614 psi | 70% | 2894 fps | 95.6% |
| ADI AR 2225 | <<locked>> | 94% | 34,867 psi | 55% | 2710 fps | 95.2% |
| Alliant Power Pro Varmint | <<locked>> | 82% | 40,001 psi | 63% | 2766 fps | 95.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 53,664 psi | 84% | 2959 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 42,540 psi | 67% | 2851 fps | 99.8% |
| Alliant Reloder-17 | <<locked>> | 80% | 49,110 psi | 77% | 2979 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 82% | 39,624 psi | 62% | 2759 fps | 95.2% |
| Alliant Reloder-22 | <<locked>> | 86% | 40,495 psi | 63% | 2815 fps | 95.7% |
| Alliant Reloder-23 | <<locked>> | 80% | 31,691 psi | 50% | 2598 fps | 98.7% |
| Alliant Reloder-25 | <<locked>> | 84% | 31,575 psi | 49% | 2612 fps | 95.7% |
| Alliant Reloder-26 | 76.2 gr | 80% | 34,606 psi | 54% | 2733 fps | 97.8% |
| Bofors RP15 | <<locked>> | 88% | 40,118 psi | 63% | 2808 fps | 95.4% |
| Bofors RP30 | <<locked>> | 96% | 43,047 psi | 67% | 2904 fps | 95.7% |
| Bofors RP5 | <<locked>> | 86% | 40,495 psi | 63% | 2815 fps | 95.7% |
| Bofors RP7 | <<locked>> | 80% | 47,427 psi | 74% | 2854 fps | 98.3% |
| Hodgdon H1000 | <<locked>> | 94% | 42,757 psi | 67% | 2858 fps | 95.7% |
| Hodgdon H414 | <<locked>> | 80% | 46,108 psi | 72% | 2894 fps | 98.5% |
| Hodgdon H4350 | <<locked>> | 80% | 48,660 psi | 76% | 2910 fps | 98% |
| Hodgdon H4831 | <<locked>> | 88% | 46,369 psi | 73% | 2884 fps | 95.2% |
| Hodgdon H4831 SC | <<locked>> | 88% | 45,513 psi | 71% | 2867 fps | 95% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 40,234 psi | 63% | 2736 fps | 99.9% |
| Hodgdon Retumbo | <<locked>> | 90% | 37,623 psi | 59% | 2825 fps | 95% |
| Hodgdon Superformance | <<locked>> | 80% | 45,658 psi | 72% | 2917 fps | 98.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,688 psi | 43% | 1719 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 42,873 psi | 67% | 2776 fps | 97.4% |
| IMR 4451 Enduron | <<locked>> | 80% | 48,660 psi | 76% | 2881 fps | 98.9% |
| IMR 4831 | <<locked>> | 80% | 42,322 psi | 66% | 2789 fps | 99.5% |
| IMR 4955 Enduron | <<locked>> | 86% | 45,092 psi | 71% | 2822 fps | 95.1% |
| IMR 7828 SSC | <<locked>> | 90% | 44,599 psi | 70% | 2913 fps | 95.4% |
| Lovex S065 | <<locked>> | 80% | 46,238 psi | 72% | 2828 fps | 99.3% |
| Lovex S070 | <<locked>> | 80% | 44,599 psi | 70% | 2812 fps | 98.4% |
| Lovex S071 | <<locked>> | 84% | 32,489 psi | 51% | 2552 fps | 95.5% |
| Norma 204 | <<locked>> | 80% | 42,772 psi | 67% | 2812 fps | 96.1% |
| Norma 217 | <<locked>> | 98% | 35,505 psi | 56% | 2759 fps | 95% |
| Norma MRP | <<locked>> | 82% | 36,970 psi | 58% | 2762 fps | 95.9% |
| Norma URP | <<locked>> | 80% | 43,685 psi | 68% | 2831 fps | 99.6% |
| Ramshot Grand | <<locked>> | 90% | 44,469 psi | 70% | 2923 fps | 95.8% |
| Ramshot Hunter | <<locked>> | 80% | 42,569 psi | 67% | 2825 fps | 98.5% |
| Ramshot Magnum | <<locked>> | 88% | 36,970 psi | 58% | 2726 fps | 95.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,195 psi | 44% | 1759 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 52,141 psi | 82% | 3028 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 44,454 psi | 70% | 2864 fps | 99.6% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 42,641 psi | 67% | 2877 fps | 99.4% |
| ReloadSwiss RS 76 | <<locked>> | 90% | 36,956 psi | 58% | 2802 fps | 96.1% |
| Rottweil R 903 | <<locked>> | 80% | 51,445 psi | 81% | 2920 fps | 100% |
| Rottweil R 904 | <<locked>> | 84% | 43,932 psi | 69% | 2808 fps | 95.4% |
| Rottweil R 905 | <<locked>> | 82% | 38,986 psi | 61% | 2743 fps | 95.2% |
| Rottweil R 907 | <<locked>> | 80% | 47,427 psi | 74% | 2854 fps | 98.3% |
| Shooters World Long Rifle | <<locked>> | 80% | 46,238 psi | 72% | 2828 fps | 99.3% |
| Shooters World SW4350 | <<locked>> | 80% | 44,599 psi | 70% | 2812 fps | 98.4% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 52,794 psi | 83% | 2979 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 51,590 psi | 81% | 2802 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 45,252 psi | 71% | 2769 fps | 98.4% |
| SNPE Vectan Tubal 8000 | <<locked>> | 82% | 38,653 psi | 61% | 2740 fps | 95.1% |
| Somchem S355 | <<locked>> | 80% | 51,256 psi | 80% | 2917 fps | 100% |
| Somchem S361 | <<locked>> | 86% | 48,008 psi | 75% | 2858 fps | 95.7% |
| Somchem S365 | <<locked>> | 80% | 40,596 psi | 64% | 2789 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 36,970 psi | 58% | 2664 fps | 95.4% |
| Vihtavuori N150 | <<locked>> | 80% | 49,081 psi | 77% | 2838 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 45,150 psi | 71% | 2831 fps | 99.7% |
| Vihtavuori N165 | <<locked>> | 86% | 39,175 psi | 61% | 2710 fps | 95.9% |
| Vihtavuori N550 | <<locked>> | 80% | 44,483 psi | 70% | 2831 fps | 99.6% |
| Vihtavuori N555 | <<locked>> | 80% | 35,621 psi | 56% | 2680 fps | 98.7% |
| Vihtavuori N560 | <<locked>> | 88% | 45,803 psi | 72% | 2946 fps | 95.3% |
| Vihtavuori N565 | <<locked>> | 94% | 45,730 psi | 72% | 2927 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 44,251 psi | 69% | 2792 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 46,267 psi | 73% | 2897 fps | 98.6% |
| Winchester StaBALL HD | 73.2 gr | 80% | 28,224 psi | 44% | 2595 fps | 98.5% |
| Winchester Supreme 780 | <<locked>> | 86% | 41,553 psi | 65% | 2769 fps | 95.9% |
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 | 168gr | Norma Diamond. Winchester StaBALL HD delivers the highest muzzle velocity at 3,186 fps; across all powders the maximum-charge window runs from 1,923 fps to 3,186 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 168.0 gr projectile in 0.308" calls for a 1:13.5 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. Accurate MAGPRO, Winchester StaBALL HD, Alliant Reloder-26 rank at the top here: for .300 Norma Mag. with the .308 | 168gr | Norma Diamond 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.