Load Specifications
Load data in caliber .300 Win. Mag. with .308 | 165gr | Woodleigh PP SN bullet and 87 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 Alliant Reloder-17.
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% | 54,766 psi | 88% | 2851 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 56,057 psi | 90% | 2917 fps | 98.5% |
| Accurate 3100ᴾ | <<locked>> | 100% | 53,795 psi | 86% | 2956 fps | 99.4% |
| Accurate 4064 | <<locked>> | 84% | 55,172 psi | 88% | 2907 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 55,985 psi | 90% | 3012 fps | 100% |
| ADI AR 2208 | <<locked>> | 86% | 55,245 psi | 89% | 2936 fps | 100% |
| ADI AR 2209 | <<locked>> | 96% | 53,417 psi | 86% | 2995 fps | 97.4% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 54,752 psi | 88% | 3045 fps | 96.4% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 54,563 psi | 87% | 3061 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 96% | 53,548 psi | 86% | 2992 fps | 97.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 56,130 psi | 90% | 2963 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 56,246 psi | 90% | 2982 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 92% | 53,156 psi | 85% | 3015 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 88% | 54,128 psi | 87% | 3038 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 98% | 56,260 psi | 90% | 3041 fps | 98% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 53,621 psi | 86% | 3041 fps | 97.7% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 50,589 psi | 81% | 2976 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 43,976 psi | 71% | 2890 fps | 98.7% |
| Alliant Reloder-26 | <<locked>> | 98% | 54,172 psi | 87% | 3114 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 49,008 psi | 79% | 2956 fps | 96.6% |
| Bofors RP3 | <<locked>> | 84% | 53,388 psi | 86% | 2923 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 53,621 psi | 86% | 3041 fps | 97.7% |
| Bofors RP7 | <<locked>> | 90% | 56,260 psi | 90% | 2959 fps | 98.7% |
| Hodgdon H380 | <<locked>> | 84% | 53,722 psi | 86% | 2940 fps | 99.8% |
| Hodgdon H414 | <<locked>> | 90% | 54,549 psi | 87% | 3009 fps | 98.9% |
| Hodgdon H4350 | <<locked>> | 88% | 54,317 psi | 87% | 2966 fps | 97.9% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 53,403 psi | 86% | 2940 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 55,027 psi | 88% | 2979 fps | 100% |
| Hodgdon Superformance | <<locked>> | 90% | 54,781 psi | 88% | 3045 fps | 98.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,332 psi | 58% | 1854 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 55,680 psi | 89% | 2940 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 54,679 psi | 88% | 2920 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 82% | 53,896 psi | 86% | 2900 fps | 98.8% |
| IMR 4350 | <<locked>> | 92% | 53,737 psi | 86% | 2936 fps | 98.4% |
| IMR 4451 Enduron | <<locked>> | 88% | 54,621 psi | 88% | 2936 fps | 98.8% |
| IMR 4831 | <<locked>> | 94% | 56,434 psi | 90% | 3002 fps | 100% |
| IMR 4895 | <<locked>> | 82% | 54,259 psi | 87% | 2959 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 98% | 56,405 psi | 90% | 2979 fps | 96.3% |
| Lovex S060 | <<locked>> | 82% | 56,304 psi | 90% | 2907 fps | 100% |
| Lovex S062 | <<locked>> | 84% | 55,042 psi | 88% | 2917 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 54,636 psi | 88% | 2930 fps | 99.6% |
| Lovex S070 | <<locked>> | 92% | 55,999 psi | 90% | 2976 fps | 99.2% |
| Lovex S071ᴾ | <<locked>> | 100% | 44,730 psi | 72% | 2799 fps | 98% |
| Norma 201 | <<locked>> | 82% | 56,188 psi | 90% | 2923 fps | 100% |
| Norma 203B | <<locked>> | 84% | 55,535 psi | 89% | 2969 fps | 100% |
| Norma 204 | <<locked>> | 92% | 54,491 psi | 87% | 2989 fps | 97.5% |
| Norma MRP | <<locked>> | 98% | 52,939 psi | 85% | 3064 fps | 98.8% |
| Norma URP | <<locked>> | 92% | 54,737 psi | 88% | 2995 fps | 100% |
| Ramshot Big Game | <<locked>> | 82% | 52,823 psi | 85% | 2940 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 52,431 psi | 84% | 3028 fps | 96.3% |
| Ramshot Hunter | <<locked>> | 92% | 53,417 psi | 86% | 2992 fps | 99.3% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 46,833 psi | 75% | 2897 fps | 96.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,999 psi | 59% | 1896 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 53,751 psi | 86% | 2920 fps | 99.1% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 53,621 psi | 86% | 3031 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 55,927 psi | 90% | 3035 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 54,317 psi | 87% | 3061 fps | 99.9% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 42,960 psi | 69% | 2904 fps | 96.6% |
| Rottweil R 902 | <<locked>> | 82% | 53,490 psi | 86% | 2874 fps | 100% |
| Rottweil R 903 | <<locked>> | 86% | 53,461 psi | 86% | 2920 fps | 100% |
| Rottweil R 904 | <<locked>> | 96% | 54,998 psi | 88% | 2963 fps | 96.6% |
| Rottweil R 905 | <<locked>> | 98% | 55,405 psi | 89% | 3025 fps | 98% |
| Rottweil R 907 | <<locked>> | 90% | 56,260 psi | 90% | 2959 fps | 98.7% |
| Shooters World Long Rifle | <<locked>> | 90% | 54,636 psi | 88% | 2930 fps | 99.6% |
| Shooters World Precision | <<locked>> | 84% | 55,042 psi | 88% | 2917 fps | 100% |
| Shooters World SW4350 | <<locked>> | 92% | 55,999 psi | 90% | 2976 fps | 99.2% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 55,085 psi | 88% | 2982 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 55,956 psi | 90% | 2953 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 54,607 psi | 88% | 2808 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 54,201 psi | 87% | 2881 fps | 98.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 54,926 psi | 88% | 3018 fps | 97.9% |
| Somchem S355 | <<locked>> | 86% | 53,505 psi | 86% | 2917 fps | 100% |
| Somchem S365 | <<locked>> | 94% | 53,983 psi | 87% | 3002 fps | 100% |
| Somchem S385 | <<locked>> | 98% | 56,144 psi | 90% | 3002 fps | 98.7% |
| Vihtavuori N135 | <<locked>> | 82% | 53,867 psi | 86% | 2838 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 54,085 psi | 87% | 2851 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 54,708 psi | 88% | 2890 fps | 100% |
| Vihtavuori N160 | <<locked>> | 90% | 53,258 psi | 85% | 2936 fps | 99.9% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 51,808 psi | 83% | 2917 fps | 97.7% |
| Vihtavuori N540 | <<locked>> | 84% | 55,753 psi | 89% | 2894 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 55,796 psi | 89% | 2995 fps | 99.9% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 56,434 psi | 90% | 3054 fps | 100% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 52,736 psi | 85% | 2904 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 54,752 psi | 88% | 3012 fps | 99% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 45,629 psi | 73% | 3031 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 82% | 56,260 psi | 90% | 2963 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 52,576 psi | 84% | 2933 fps | 97.2% |
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 2495 | <<locked>> | 80% | 51,329 psi | 82% | 2799 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 49,081 psi | 79% | 2802 fps | 97.3% |
| Accurate 3100 | <<locked>> | 88% | 35,781 psi | 57% | 2608 fps | 95.4% |
| Accurate 4064 | <<locked>> | 80% | 48,617 psi | 78% | 2805 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 37,144 psi | 60% | 2661 fps | 97.6% |
| ADI AR 2208 | <<locked>> | 80% | 45,977 psi | 74% | 2779 fps | 99.6% |
| ADI AR 2209 | <<locked>> | 92% | 46,731 psi | 75% | 2871 fps | 95.8% |
| ADI AR 2213 | <<locked>> | 98% | 51,053 psi | 82% | 2979 fps | 95.4% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 50,662 psi | 81% | 2995 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 90% | 43,976 psi | 71% | 2812 fps | 95.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 46,485 psi | 75% | 2805 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 49,647 psi | 80% | 2874 fps | 99.9% |
| Alliant Reloder-16 | <<locked>> | 80% | 36,187 psi | 58% | 2667 fps | 97.7% |
| Alliant Reloder-17 | 64 gr | 80% | 40,857 psi | 66% | 2799 fps | 99.7% |
| Alliant Reloder-19 | <<locked>> | 90% | 43,468 psi | 70% | 2805 fps | 95% |
| Alliant Reloder-22 | <<locked>> | 94% | 43,700 psi | 70% | 2854 fps | 95.2% |
| Alliant Reloder-23 | <<locked>> | 82% | 28,224 psi | 45% | 2464 fps | 95.9% |
| Alliant Reloder-25 | <<locked>> | 92% | 34,040 psi | 55% | 2644 fps | 95.1% |
| Alliant Reloder-26 | 68.9 gr | 84% | 32,445 psi | 52% | 2644 fps | 95.4% |
| Bofors RP15 | <<locked>> | 98% | 45,948 psi | 74% | 2897 fps | 95.7% |
| Bofors RP3 | <<locked>> | 80% | 46,717 psi | 75% | 2812 fps | 100% |
| Bofors RP5 | <<locked>> | 94% | 43,700 psi | 70% | 2854 fps | 95.2% |
| Bofors RP7 | <<locked>> | 80% | 41,118 psi | 66% | 2677 fps | 95.4% |
| Hodgdon H380 | <<locked>> | 80% | 47,123 psi | 76% | 2825 fps | 99.2% |
| Hodgdon H414 | <<locked>> | 80% | 38,914 psi | 62% | 2703 fps | 95.4% |
| Hodgdon H4350 | <<locked>> | 82% | 44,831 psi | 72% | 2789 fps | 95.8% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 33,707 psi | 54% | 2562 fps | 98.3% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 51,430 psi | 82% | 2923 fps | 100% |
| Hodgdon Superformance | <<locked>> | 82% | 40,828 psi | 65% | 2776 fps | 95.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,209 psi | 44% | 1657 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 52,315 psi | 84% | 2890 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 48,370 psi | 78% | 2815 fps | 99.9% |
| IMR 4166 Enduron | <<locked>> | 80% | 50,647 psi | 81% | 2844 fps | 98.3% |
| IMR 4350 | <<locked>> | 84% | 41,930 psi | 67% | 2717 fps | 95.7% |
| IMR 4451 Enduron | <<locked>> | 80% | 42,496 psi | 68% | 2707 fps | 96.4% |
| IMR 4831 | <<locked>> | 80% | 35,723 psi | 57% | 2612 fps | 97.3% |
| IMR 4895 | <<locked>> | 80% | 50,937 psi | 82% | 2904 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 53,040 psi | 85% | 2923 fps | 95.6% |
| Lovex S060 | <<locked>> | 80% | 52,924 psi | 85% | 2854 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 48,573 psi | 78% | 2812 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 40,030 psi | 64% | 2657 fps | 97.1% |
| Lovex S070 | <<locked>> | 80% | 38,348 psi | 61% | 2635 fps | 95.4% |
| Lovex S071 | <<locked>> | 94% | 36,767 psi | 59% | 2631 fps | 95.8% |
| Norma 201 | <<locked>> | 80% | 52,794 psi | 85% | 2871 fps | 100% |
| Norma 203B | <<locked>> | 80% | 49,023 psi | 79% | 2861 fps | 100% |
| Norma 204 | <<locked>> | 86% | 44,483 psi | 71% | 2805 fps | 95% |
| Norma MRP | <<locked>> | 90% | 40,234 psi | 65% | 2808 fps | 95.7% |
| Norma URP | <<locked>> | 80% | 36,898 psi | 59% | 2654 fps | 97.4% |
| Ramshot Big Game | <<locked>> | 80% | 49,153 psi | 79% | 2881 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 48,704 psi | 78% | 2959 fps | 95.3% |
| Ramshot Hunter | <<locked>> | 80% | 35,694 psi | 57% | 2635 fps | 95.2% |
| Ramshot Magnum | <<locked>> | 98% | 43,352 psi | 70% | 2825 fps | 95.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,702 psi | 44% | 1696 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 47,094 psi | 76% | 2805 fps | 98.1% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 43,424 psi | 70% | 2854 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 36,825 psi | 59% | 2674 fps | 97.2% |
| ReloadSwiss RS 70 | 65 gr | 80% | 35,737 psi | 57% | 2674 fps | 96.4% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 40,089 psi | 64% | 2831 fps | 95.4% |
| Rottweil R 902 | <<locked>> | 80% | 50,401 psi | 81% | 2825 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 44,019 psi | 71% | 2759 fps | 99.9% |
| Rottweil R 904 | <<locked>> | 92% | 48,414 psi | 78% | 2848 fps | 95% |
| Rottweil R 905 | <<locked>> | 92% | 45,469 psi | 73% | 2848 fps | 95.8% |
| Rottweil R 907 | <<locked>> | 80% | 41,118 psi | 66% | 2677 fps | 95.4% |
| Shooters World Long Rifle | <<locked>> | 80% | 40,030 psi | 64% | 2657 fps | 97.1% |
| Shooters World Precision | <<locked>> | 80% | 48,573 psi | 78% | 2812 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 38,348 psi | 61% | 2635 fps | 95.4% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 45,020 psi | 72% | 2808 fps | 99.7% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 52,431 psi | 84% | 2897 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 45,223 psi | 73% | 2667 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 39,262 psi | 63% | 2602 fps | 95.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 45,049 psi | 72% | 2841 fps | 95.7% |
| Somchem S355 | <<locked>> | 80% | 44,280 psi | 71% | 2756 fps | 99.9% |
| Somchem S365 | <<locked>> | 80% | 33,286 psi | 53% | 2605 fps | 99.2% |
| Somchem S385 | <<locked>> | 88% | 40,480 psi | 65% | 2713 fps | 95.2% |
| Vihtavuori N135 | <<locked>> | 80% | 50,502 psi | 81% | 2789 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 50,778 psi | 81% | 2802 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 42,308 psi | 68% | 2687 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 38,334 psi | 61% | 2654 fps | 97.8% |
| Vihtavuori N165 | <<locked>> | 94% | 42,409 psi | 68% | 2743 fps | 95.4% |
| Vihtavuori N540 | <<locked>> | 80% | 49,095 psi | 79% | 2795 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 37,797 psi | 61% | 2654 fps | 97.4% |
| Vihtavuori N555 | <<locked>> | 80% | 29,138 psi | 47% | 2490 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 37,449 psi | 60% | 2625 fps | 99.3% |
| Winchester 760 | <<locked>> | 80% | 39,102 psi | 63% | 2707 fps | 95.5% |
| Winchester StaBALL HD | <<locked>> | 84% | 26,687 psi | 43% | 2493 fps | 95.7% |
| Winchester StaBALL Match | <<locked>> | 80% | 52,649 psi | 84% | 2907 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 45,759 psi | 73% | 2815 fps | 95.6% |
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 87 powders for .300 Win. Mag. loaded with the .308 | 165gr | Woodleigh PP SN. Alliant Reloder-26 delivers the highest muzzle velocity at 3,114 fps; across all powders the maximum-charge window runs from 1,854 fps to 3,114 fps. Accurate 3100 gives the best case fill at 100 %, and 87 of the 87 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 165.0 gr projectile in 0.308" calls for a 1:15.5 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, Alliant Reloder-17 rank at the top here: for .300 Win. Mag. with the .308 | 165gr | Woodleigh PP SN 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.