Load Specifications
Load data in caliber .300 Win. Mag. with .308 | 167gr | Lapua Scenar bullet and 91 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 70, Alliant Reloder-26 and Hodgdon Superformance.
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.
A valid access license is required to use the Personalized Load Calculator.
You can find more information in our FAQ: How can I use the Personalized Load Calculator?
Max Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2495 | <<locked>> | 82% | 54,360 psi | 87% | 2825 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 55,637 psi | 89% | 2890 fps | 98.4% |
| Accurate 3100ᴾ | <<locked>> | 100% | 53,156 psi | 85% | 2927 fps | 99.3% |
| Accurate 4064 | <<locked>> | 84% | 54,781 psi | 88% | 2881 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 55,332 psi | 89% | 2982 fps | 100% |
| Accurate High Country | <<locked>> | 98% | 54,244 psi | 87% | 3068 fps | 96.8% |
| ADI AR 2208 | <<locked>> | 86% | 54,752 psi | 88% | 2907 fps | 100% |
| ADI AR 2209 | <<locked>> | 98% | 56,362 psi | 90% | 3025 fps | 98% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 53,998 psi | 87% | 3012 fps | 96.2% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 53,795 psi | 86% | 3028 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 98% | 56,391 psi | 90% | 3018 fps | 98% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 55,608 psi | 89% | 2933 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 55,753 psi | 89% | 2956 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 94% | 56,072 psi | 90% | 3041 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 88% | 53,505 psi | 86% | 3009 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 98% | 55,593 psi | 89% | 3012 fps | 97.9% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 52,721 psi | 85% | 3009 fps | 97.6% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 49,879 psi | 80% | 2946 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 43,453 psi | 70% | 2861 fps | 98.6% |
| Alliant Reloder-26 | <<locked>> | 98% | 53,316 psi | 85% | 3084 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 48,399 psi | 78% | 2927 fps | 96.4% |
| Bofors RP3 | <<locked>> | 86% | 56,391 psi | 90% | 2949 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 52,721 psi | 85% | 3009 fps | 97.6% |
| Bofors RP7 | <<locked>> | 90% | 55,869 psi | 90% | 2933 fps | 98.6% |
| Hodgdon H380 | <<locked>> | 84% | 53,272 psi | 85% | 2910 fps | 99.8% |
| Hodgdon H414 | <<locked>> | 90% | 53,954 psi | 87% | 2979 fps | 98.9% |
| Hodgdon H4350 | <<locked>> | 88% | 53,722 psi | 86% | 2936 fps | 97.8% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 52,794 psi | 85% | 2910 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 54,520 psi | 87% | 2949 fps | 100% |
| Hodgdon Superformance | <<locked>> | 90% | 53,896 psi | 86% | 3012 fps | 98.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,260 psi | 58% | 1834 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 55,143 psi | 88% | 2913 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 54,331 psi | 87% | 2894 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 82% | 53,374 psi | 86% | 2867 fps | 98.7% |
| IMR 4350 | <<locked>> | 92% | 53,185 psi | 85% | 2907 fps | 98.3% |
| IMR 4451 Enduron | <<locked>> | 88% | 53,969 psi | 87% | 2907 fps | 98.7% |
| IMR 4831 | <<locked>> | 94% | 55,854 psi | 90% | 2976 fps | 100% |
| IMR 4895 | <<locked>> | 82% | 53,635 psi | 86% | 2930 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 98% | 55,825 psi | 90% | 2949 fps | 96.2% |
| Lovex S060 | <<locked>> | 82% | 55,912 psi | 90% | 2881 fps | 100% |
| Lovex S062 | <<locked>> | 84% | 54,447 psi | 87% | 2887 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 54,230 psi | 87% | 2904 fps | 99.5% |
| Lovex S070 | <<locked>> | 92% | 55,448 psi | 89% | 2946 fps | 99.1% |
| Lovex S071ᴾ | <<locked>> | 100% | 44,034 psi | 71% | 2769 fps | 97.9% |
| Norma 201 | <<locked>> | 82% | 55,825 psi | 90% | 2897 fps | 100% |
| Norma 202 | <<locked>> | 82% | 56,420 psi | 90% | 2894 fps | 100% |
| Norma 203B | <<locked>> | 84% | 55,056 psi | 88% | 2940 fps | 100% |
| Norma 204 | <<locked>> | 92% | 53,983 psi | 87% | 2959 fps | 97.4% |
| Norma MRPᴾ | <<locked>> | 100% | 56,275 psi | 90% | 3100 fps | 99.2% |
| Norma URP | <<locked>> | 92% | 54,114 psi | 87% | 2966 fps | 99.9% |
| Ramshot Big Game | <<locked>> | 84% | 55,782 psi | 89% | 2966 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 51,677 psi | 83% | 2995 fps | 96.1% |
| Ramshot Hunter | <<locked>> | 94% | 56,420 psi | 90% | 3022 fps | 99.6% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 46,180 psi | 74% | 2867 fps | 96.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,941 psi | 59% | 1877 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 53,316 psi | 85% | 2897 fps | 99.1% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 53,171 psi | 85% | 3005 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 55,201 psi | 89% | 3005 fps | 99.9% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 53,708 psi | 86% | 3031 fps | 99.9% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 42,424 psi | 68% | 2874 fps | 96.5% |
| Rottweil R 902 | <<locked>> | 82% | 53,055 psi | 85% | 2848 fps | 100% |
| Rottweil R 903 | <<locked>> | 86% | 52,939 psi | 85% | 2890 fps | 100% |
| Rottweil R 904 | <<locked>> | 96% | 54,505 psi | 87% | 2936 fps | 96.5% |
| Rottweil R 905 | <<locked>> | 98% | 54,926 psi | 88% | 2995 fps | 97.9% |
| Rottweil R 907 | <<locked>> | 90% | 55,869 psi | 90% | 2933 fps | 98.6% |
| Shooters World Long Rifle | <<locked>> | 90% | 54,230 psi | 87% | 2904 fps | 99.5% |
| Shooters World Precision | <<locked>> | 84% | 54,447 psi | 87% | 2887 fps | 100% |
| Shooters World SW4350 | <<locked>> | 92% | 55,448 psi | 89% | 2946 fps | 99.1% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 54,404 psi | 87% | 2953 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 55,463 psi | 89% | 2927 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 54,070 psi | 87% | 2782 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 53,838 psi | 86% | 2854 fps | 98.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 54,433 psi | 87% | 2992 fps | 97.8% |
| Somchem S335 | <<locked>> | 82% | 56,289 psi | 90% | 2825 fps | 100% |
| Somchem S355 | <<locked>> | 86% | 52,968 psi | 85% | 2887 fps | 100% |
| Somchem S361 | <<locked>> | 96% | 56,347 psi | 90% | 2930 fps | 96% |
| Somchem S365 | <<locked>> | 94% | 53,127 psi | 85% | 2969 fps | 100% |
| Somchem S385 | <<locked>> | 98% | 55,492 psi | 89% | 2972 fps | 98.6% |
| Vihtavuori N135 | <<locked>> | 82% | 53,388 psi | 86% | 2812 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 53,693 psi | 86% | 2828 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 54,259 psi | 87% | 2864 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 56,188 psi | 90% | 2963 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 51,227 psi | 82% | 2887 fps | 97.6% |
| Vihtavuori N540 | <<locked>> | 84% | 55,274 psi | 89% | 2871 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 55,274 psi | 89% | 2966 fps | 99.9% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 55,738 psi | 89% | 3025 fps | 100% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 55,999 psi | 90% | 2930 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 53,954 psi | 87% | 2979 fps | 98.9% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 44,933 psi | 72% | 2999 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 82% | 55,811 psi | 89% | 2936 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 55,680 psi | 89% | 2966 fps | 97.8% |
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 2495 | <<locked>> | 80% | 50,865 psi | 82% | 2776 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 48,660 psi | 78% | 2772 fps | 97.2% |
| Accurate 3100 | <<locked>> | 88% | 35,244 psi | 57% | 2582 fps | 95.3% |
| Accurate 4064 | <<locked>> | 80% | 48,167 psi | 77% | 2779 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 36,593 psi | 59% | 2631 fps | 97.5% |
| Accurate High Country | <<locked>> | 94% | 47,123 psi | 76% | 2936 fps | 95% |
| ADI AR 2208 | <<locked>> | 80% | 45,600 psi | 73% | 2753 fps | 99.6% |
| ADI AR 2209 | <<locked>> | 92% | 46,224 psi | 74% | 2841 fps | 95.7% |
| ADI AR 2213 | <<locked>> | 98% | 50,488 psi | 81% | 2946 fps | 95.3% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 50,154 psi | 80% | 2966 fps | 99.9% |
| Alliant Power Pro Varmint | <<locked>> | 92% | 46,354 psi | 74% | 2841 fps | 95.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 45,905 psi | 74% | 2776 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 49,081 psi | 79% | 2844 fps | 99.9% |
| Alliant Reloder-16 | <<locked>> | 80% | 35,839 psi | 57% | 2644 fps | 97.6% |
| Alliant Reloder-17 | <<locked>> | 80% | 40,582 psi | 65% | 2772 fps | 99.7% |
| Alliant Reloder-19 | <<locked>> | 92% | 45,788 psi | 73% | 2835 fps | 95.7% |
| Alliant Reloder-22 | <<locked>> | 94% | 43,250 psi | 69% | 2825 fps | 95.1% |
| Alliant Reloder-23 | <<locked>> | 82% | 27,963 psi | 45% | 2441 fps | 95.9% |
| Alliant Reloder-25 | <<locked>> | 92% | 33,649 psi | 54% | 2618 fps | 95% |
| Alliant Reloder-26 | 67.6 gr | 84% | 32,010 psi | 51% | 2615 fps | 95.2% |
| Bofors RP15 | <<locked>> | 98% | 45,324 psi | 73% | 2867 fps | 95.6% |
| Bofors RP3 | <<locked>> | 80% | 46,311 psi | 74% | 2789 fps | 100% |
| Bofors RP5 | <<locked>> | 94% | 43,250 psi | 69% | 2825 fps | 95.1% |
| Bofors RP7 | <<locked>> | 80% | 40,741 psi | 65% | 2651 fps | 95.3% |
| Hodgdon H380 | <<locked>> | 80% | 46,601 psi | 75% | 2795 fps | 99.1% |
| Hodgdon H414 | <<locked>> | 80% | 38,624 psi | 62% | 2677 fps | 95.3% |
| Hodgdon H4350 | <<locked>> | 82% | 44,396 psi | 71% | 2762 fps | 95.7% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 33,359 psi | 53% | 2536 fps | 98.2% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 50,865 psi | 82% | 2894 fps | 100% |
| Hodgdon Superformance | 68.1 gr | 82% | 40,393 psi | 65% | 2746 fps | 95.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,151 psi | 44% | 1640 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 51,735 psi | 83% | 2861 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 47,964 psi | 77% | 2785 fps | 99.8% |
| IMR 4166 Enduron | <<locked>> | 80% | 50,125 psi | 80% | 2815 fps | 98.2% |
| IMR 4350 | <<locked>> | 84% | 41,495 psi | 67% | 2687 fps | 95.6% |
| IMR 4451 Enduron | <<locked>> | 80% | 42,177 psi | 68% | 2684 fps | 96.3% |
| IMR 4831 | <<locked>> | 80% | 35,201 psi | 56% | 2585 fps | 97.2% |
| IMR 4895 | <<locked>> | 80% | 50,357 psi | 81% | 2874 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 52,388 psi | 84% | 2894 fps | 95.4% |
| Lovex S060 | <<locked>> | 80% | 52,533 psi | 84% | 2828 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 48,153 psi | 77% | 2785 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 39,697 psi | 64% | 2631 fps | 97.1% |
| Lovex S070 | <<locked>> | 80% | 37,985 psi | 61% | 2612 fps | 95.3% |
| Lovex S071 | <<locked>> | 94% | 36,390 psi | 58% | 2608 fps | 95.7% |
| Norma 201 | <<locked>> | 80% | 52,388 psi | 84% | 2848 fps | 100% |
| Norma 202 | <<locked>> | 80% | 52,924 psi | 85% | 2841 fps | 100% |
| Norma 203B | <<locked>> | 80% | 48,443 psi | 78% | 2831 fps | 100% |
| Norma 204 | <<locked>> | 88% | 47,123 psi | 76% | 2838 fps | 95.8% |
| Norma MRP | <<locked>> | 90% | 39,566 psi | 63% | 2776 fps | 95.4% |
| Norma URP | <<locked>> | 80% | 36,521 psi | 59% | 2628 fps | 97.4% |
| Ramshot Big Game | <<locked>> | 80% | 48,675 psi | 78% | 2851 fps | 99.9% |
| Ramshot Grand | <<locked>> | 98% | 48,182 psi | 77% | 2930 fps | 95.1% |
| Ramshot Hunter | <<locked>> | 80% | 35,404 psi | 57% | 2612 fps | 95.1% |
| Ramshot Magnum | <<locked>> | 98% | 42,888 psi | 69% | 2802 fps | 95.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,659 psi | 44% | 1680 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 46,630 psi | 75% | 2776 fps | 98.1% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 43,134 psi | 69% | 2831 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 36,361 psi | 58% | 2648 fps | 97.1% |
| ReloadSwiss RS 70 | 63.8 gr | 80% | 35,360 psi | 57% | 2648 fps | 96.2% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 39,552 psi | 63% | 2802 fps | 95.2% |
| Rottweil R 902 | <<locked>> | 80% | 50,009 psi | 80% | 2799 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 43,627 psi | 70% | 2733 fps | 99.9% |
| Rottweil R 904 | <<locked>> | 94% | 51,097 psi | 82% | 2877 fps | 95.7% |
| Rottweil R 905 | <<locked>> | 92% | 44,918 psi | 72% | 2818 fps | 95.7% |
| Rottweil R 907 | <<locked>> | 80% | 40,741 psi | 65% | 2651 fps | 95.3% |
| Shooters World Long Rifle | <<locked>> | 80% | 39,697 psi | 64% | 2631 fps | 97.1% |
| Shooters World Precision | <<locked>> | 80% | 48,153 psi | 77% | 2785 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 37,985 psi | 61% | 2612 fps | 95.3% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 44,686 psi | 72% | 2785 fps | 99.7% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 52,098 psi | 84% | 2874 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 45,020 psi | 72% | 2644 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 38,957 psi | 62% | 2575 fps | 95.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 44,498 psi | 71% | 2812 fps | 95.5% |
| Somchem S335 | <<locked>> | 80% | 52,910 psi | 85% | 2779 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 43,888 psi | 70% | 2730 fps | 99.8% |
| Somchem S361 | <<locked>> | 94% | 52,707 psi | 85% | 2871 fps | 95.2% |
| Somchem S365 | <<locked>> | 80% | 32,938 psi | 53% | 2582 fps | 99.2% |
| Somchem S385 | <<locked>> | 88% | 39,929 psi | 64% | 2684 fps | 95% |
| Vihtavuori N135 | <<locked>> | 80% | 50,212 psi | 81% | 2762 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 50,386 psi | 81% | 2776 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 41,974 psi | 67% | 2661 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 37,826 psi | 61% | 2628 fps | 97.7% |
| Vihtavuori N165 | <<locked>> | 94% | 41,945 psi | 67% | 2717 fps | 95.2% |
| Vihtavuori N540 | <<locked>> | 80% | 48,588 psi | 78% | 2769 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 37,318 psi | 60% | 2628 fps | 97.3% |
| Vihtavuori N555 | <<locked>> | 80% | 28,790 psi | 46% | 2464 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 37,101 psi | 59% | 2598 fps | 99.3% |
| Winchester 760 | <<locked>> | 80% | 38,783 psi | 62% | 2684 fps | 95.4% |
| Winchester StaBALL HD | <<locked>> | 84% | 26,397 psi | 42% | 2467 fps | 95.5% |
| Winchester StaBALL Match | <<locked>> | 80% | 52,141 psi | 84% | 2881 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 45,150 psi | 72% | 2785 fps | 95.5% |
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 91 powders for .300 Win. Mag. loaded with the .308 | 167gr | Lapua Scenar. Norma MRP delivers the highest muzzle velocity at 3,100 fps; across all powders the maximum-charge window runs from 1,834 fps to 3,100 fps. Accurate 3100 gives the best case fill at 100 %, and 91 of the 91 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (430 MPa), the top charges use 58–90 %, leaving at least 10 % headroom. The 167.0 gr projectile in 0.308" calls for a 1:13.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, ADI AR 2213, Alliant Reloder-22 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. ReloadSwiss RS 70, Alliant Reloder-26, Hodgdon Superformance rank at the top here: for .300 Win. Mag. with the .308 | 167gr | Lapua Scenar 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.