Load Specifications
Load data in caliber .300 Win. Mag. with .308 | 168gr | Sellier & Bellot HPBT bullet and 92 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% | 53,911 psi | 86% | 2808 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 54,969 psi | 88% | 2867 fps | 98.3% |
| Accurate 3100ᴾ | <<locked>> | 100% | 52,562 psi | 84% | 2907 fps | 99.2% |
| Accurate 4064 | <<locked>> | 84% | 54,201 psi | 87% | 2861 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 54,824 psi | 88% | 2963 fps | 100% |
| ADI AR 2208 | <<locked>> | 86% | 54,433 psi | 87% | 2894 fps | 100% |
| ADI AR 2209 | <<locked>> | 98% | 55,767 psi | 89% | 3002 fps | 97.8% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 53,534 psi | 86% | 2992 fps | 96% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 53,272 psi | 85% | 3009 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 98% | 55,854 psi | 90% | 2999 fps | 97.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 55,114 psi | 88% | 2917 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 55,187 psi | 88% | 2933 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 94% | 55,405 psi | 89% | 3022 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 88% | 53,040 psi | 85% | 2989 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 98% | 55,056 psi | 88% | 2989 fps | 97.8% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 52,228 psi | 84% | 2989 fps | 97.4% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 49,327 psi | 79% | 2927 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 43,033 psi | 69% | 2841 fps | 98.4% |
| Alliant Reloder-26 | <<locked>> | 98% | 52,562 psi | 84% | 3061 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 47,921 psi | 77% | 2910 fps | 96.3% |
| Bofors RP3 | <<locked>> | 86% | 55,869 psi | 90% | 2930 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 52,228 psi | 84% | 2989 fps | 97.4% |
| Bofors RP7 | <<locked>> | 90% | 55,201 psi | 89% | 2910 fps | 98.5% |
| Hodgdon H380 | <<locked>> | 86% | 56,318 psi | 90% | 2946 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 90% | 53,330 psi | 86% | 2956 fps | 98.8% |
| Hodgdon H4350 | <<locked>> | 88% | 53,258 psi | 85% | 2917 fps | 97.7% |
| Hodgdon H4831 SCᴾ | <<locked>> | 100% | 56,231 psi | 90% | 2979 fps | 96% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 55,767 psi | 89% | 2943 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 53,983 psi | 87% | 2930 fps | 100% |
| Hodgdon Superformance | <<locked>> | 90% | 53,330 psi | 86% | 2989 fps | 98.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,332 psi | 58% | 1824 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 54,795 psi | 88% | 2897 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 53,780 psi | 86% | 2871 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 82% | 53,113 psi | 85% | 2854 fps | 98.6% |
| IMR 4350 | <<locked>> | 94% | 56,304 psi | 90% | 2946 fps | 98.7% |
| IMR 4451 Enduron | <<locked>> | 88% | 53,534 psi | 86% | 2884 fps | 98.6% |
| IMR 4831 | <<locked>> | 94% | 55,201 psi | 89% | 2953 fps | 100% |
| IMR 4895 | <<locked>> | 82% | 53,316 psi | 85% | 2910 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 98% | 55,288 psi | 89% | 2927 fps | 96% |
| Lovex S060 | <<locked>> | 82% | 55,347 psi | 89% | 2858 fps | 100% |
| Lovex S062 | <<locked>> | 84% | 54,128 psi | 87% | 2871 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 53,534 psi | 86% | 2884 fps | 99.5% |
| Lovex S070 | <<locked>> | 92% | 54,781 psi | 88% | 2927 fps | 99% |
| Lovex S071ᴾ | <<locked>> | 100% | 43,468 psi | 70% | 2749 fps | 97.8% |
| Norma 201 | <<locked>> | 82% | 55,434 psi | 89% | 2881 fps | 100% |
| Norma 202 | <<locked>> | 82% | 56,072 psi | 90% | 2877 fps | 100% |
| Norma 203B | <<locked>> | 84% | 54,476 psi | 87% | 2920 fps | 100% |
| Norma 204 | <<locked>> | 92% | 53,388 psi | 86% | 2940 fps | 97.2% |
| Norma MRPᴾ | <<locked>> | 100% | 55,506 psi | 89% | 3077 fps | 99.1% |
| Norma URP | <<locked>> | 92% | 53,432 psi | 86% | 2946 fps | 99.9% |
| Ramshot Big Game | <<locked>> | 84% | 55,347 psi | 89% | 2946 fps | 100% |
| Ramshot Hunter | <<locked>> | 94% | 55,840 psi | 90% | 3002 fps | 99.5% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 45,600 psi | 73% | 2844 fps | 96.5% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,014 psi | 59% | 1867 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 56,347 psi | 90% | 2930 fps | 99.4% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 56,188 psi | 90% | 3002 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 56,376 psi | 90% | 3041 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 54,505 psi | 87% | 2982 fps | 99.9% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 53,113 psi | 85% | 3012 fps | 99.9% |
| Rottweil R 902 | <<locked>> | 84% | 55,941 psi | 90% | 2881 fps | 100% |
| Rottweil R 903 | <<locked>> | 88% | 55,970 psi | 90% | 2927 fps | 100% |
| Rottweil R 904 | <<locked>> | 96% | 53,954 psi | 87% | 2917 fps | 96.4% |
| Rottweil R 905 | <<locked>> | 98% | 54,099 psi | 87% | 2972 fps | 97.8% |
| Rottweil R 907 | <<locked>> | 90% | 55,201 psi | 89% | 2910 fps | 98.5% |
| Shooters World Long Rifle | <<locked>> | 90% | 53,534 psi | 86% | 2884 fps | 99.5% |
| Shooters World Precision | <<locked>> | 84% | 54,128 psi | 87% | 2871 fps | 100% |
| Shooters World SW4350 | <<locked>> | 92% | 54,781 psi | 88% | 2927 fps | 99% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 53,954 psi | 87% | 2933 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 54,940 psi | 88% | 2907 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 56,188 psi | 90% | 2808 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 53,737 psi | 86% | 2766 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 53,229 psi | 85% | 2835 fps | 98.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 53,621 psi | 86% | 2966 fps | 97.6% |
| Somchem S335 | <<locked>> | 82% | 55,927 psi | 90% | 2808 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 55,927 psi | 90% | 2923 fps | 100% |
| Somchem S361 | <<locked>> | 96% | 55,695 psi | 89% | 2907 fps | 95.8% |
| Somchem S365 | <<locked>> | 96% | 56,159 psi | 90% | 3002 fps | 100% |
| Somchem S385 | <<locked>> | 98% | 54,969 psi | 88% | 2953 fps | 98.5% |
| Vihtavuori N135 | <<locked>> | 84% | 56,333 psi | 90% | 2838 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 53,156 psi | 85% | 2805 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 53,780 psi | 86% | 2848 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 55,738 psi | 89% | 2943 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 50,720 psi | 81% | 2867 fps | 97.5% |
| Vihtavuori N540 | <<locked>> | 84% | 54,795 psi | 88% | 2851 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 54,665 psi | 88% | 2946 fps | 99.9% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 55,056 psi | 88% | 3005 fps | 100% |
| Vihtavuori N560ᴾ | <<locked>> | 100% | 55,912 psi | 90% | 3064 fps | 96.3% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 55,245 psi | 89% | 2910 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 53,577 psi | 86% | 2959 fps | 98.8% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 44,498 psi | 71% | 2976 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 82% | 55,288 psi | 89% | 2917 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 54,984 psi | 88% | 2943 fps | 97.7% |
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% | 50,401 psi | 81% | 2759 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 48,385 psi | 78% | 2756 fps | 97.1% |
| Accurate 3100 | <<locked>> | 88% | 34,838 psi | 56% | 2562 fps | 95.1% |
| Accurate 4064 | <<locked>> | 80% | 47,747 psi | 77% | 2762 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 36,230 psi | 58% | 2615 fps | 97.4% |
| ADI AR 2208 | <<locked>> | 80% | 45,252 psi | 73% | 2736 fps | 99.5% |
| ADI AR 2209 | <<locked>> | 92% | 45,861 psi | 74% | 2825 fps | 95.5% |
| ADI AR 2213 | <<locked>> | 98% | 50,024 psi | 80% | 2930 fps | 95.1% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 49,603 psi | 80% | 2946 fps | 99.9% |
| Alliant Power Pro Varmint | <<locked>> | 92% | 46,021 psi | 74% | 2825 fps | 95.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 45,527 psi | 73% | 2756 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 48,718 psi | 78% | 2825 fps | 99.9% |
| Alliant Reloder-16 | <<locked>> | 80% | 35,389 psi | 57% | 2621 fps | 97.4% |
| Alliant Reloder-17 | <<locked>> | 80% | 40,074 psi | 64% | 2753 fps | 99.7% |
| Alliant Reloder-19 | <<locked>> | 92% | 45,455 psi | 73% | 2818 fps | 95.6% |
| Alliant Reloder-22 | <<locked>> | 96% | 45,672 psi | 73% | 2867 fps | 95.8% |
| Alliant Reloder-23 | <<locked>> | 82% | 27,731 psi | 44% | 2428 fps | 95.7% |
| Alliant Reloder-25 | <<locked>> | 94% | 35,578 psi | 57% | 2661 fps | 95.9% |
| Alliant Reloder-26 | 66.7 gr | 84% | 31,691 psi | 51% | 2598 fps | 95% |
| Bofors RP15 | <<locked>> | 98% | 44,817 psi | 72% | 2848 fps | 95.4% |
| Bofors RP3 | <<locked>> | 80% | 45,759 psi | 73% | 2769 fps | 100% |
| Bofors RP5 | <<locked>> | 96% | 45,672 psi | 73% | 2867 fps | 95.8% |
| Bofors RP7 | <<locked>> | 80% | 40,451 psi | 65% | 2631 fps | 95.2% |
| Hodgdon H380 | <<locked>> | 80% | 46,282 psi | 74% | 2779 fps | 99.1% |
| Hodgdon H414 | <<locked>> | 80% | 38,145 psi | 61% | 2657 fps | 95.1% |
| Hodgdon H4350 | <<locked>> | 82% | 43,888 psi | 70% | 2743 fps | 95.5% |
| Hodgdon H4831 SC | <<locked>> | 98% | 52,504 psi | 84% | 2917 fps | 95.1% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 33,011 psi | 53% | 2516 fps | 98.1% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 50,343 psi | 81% | 2874 fps | 100% |
| Hodgdon Superformance | 67.2 gr | 82% | 40,030 psi | 64% | 2730 fps | 95.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,093 psi | 43% | 1627 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 51,372 psi | 82% | 2841 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 47,572 psi | 76% | 2769 fps | 99.8% |
| IMR 4166 Enduron | <<locked>> | 80% | 49,864 psi | 80% | 2795 fps | 98.1% |
| IMR 4350 | <<locked>> | 84% | 41,046 psi | 66% | 2667 fps | 95.5% |
| IMR 4451 Enduron | <<locked>> | 80% | 41,858 psi | 67% | 2667 fps | 96.2% |
| IMR 4831 | <<locked>> | 80% | 34,853 psi | 56% | 2566 fps | 97% |
| IMR 4895 | <<locked>> | 80% | 49,966 psi | 80% | 2858 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 51,880 psi | 83% | 2871 fps | 95.2% |
| Lovex S060 | <<locked>> | 80% | 52,185 psi | 84% | 2808 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 47,732 psi | 77% | 2766 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 39,392 psi | 63% | 2615 fps | 97% |
| Lovex S070 | <<locked>> | 80% | 37,550 psi | 60% | 2592 fps | 95.2% |
| Lovex S071 | <<locked>> | 94% | 35,998 psi | 58% | 2592 fps | 95.6% |
| Norma 201 | <<locked>> | 80% | 51,953 psi | 83% | 2828 fps | 100% |
| Norma 202 | <<locked>> | 80% | 52,533 psi | 84% | 2825 fps | 100% |
| Norma 203B | <<locked>> | 80% | 48,066 psi | 77% | 2815 fps | 99.9% |
| Norma 204 | <<locked>> | 88% | 46,514 psi | 75% | 2815 fps | 95.6% |
| Norma MRP | <<locked>> | 90% | 39,233 psi | 63% | 2759 fps | 95.3% |
| Norma URP | <<locked>> | 80% | 35,998 psi | 58% | 2608 fps | 97.2% |
| Ramshot Big Game | <<locked>> | 80% | 48,196 psi | 77% | 2831 fps | 99.9% |
| Ramshot Hunter | <<locked>> | 82% | 37,362 psi | 60% | 2651 fps | 95.9% |
| Ramshot Magnum | <<locked>> | 98% | 42,322 psi | 68% | 2779 fps | 95.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,601 psi | 44% | 1670 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 46,340 psi | 74% | 2759 fps | 98% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 52,504 psi | 84% | 2946 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 42,627 psi | 68% | 2812 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 35,868 psi | 58% | 2628 fps | 96.9% |
| ReloadSwiss RS 70 | 62.9 gr | 80% | 34,983 psi | 56% | 2628 fps | 96% |
| Rottweil R 902 | <<locked>> | 80% | 49,559 psi | 79% | 2782 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 43,047 psi | 69% | 2710 fps | 99.8% |
| Rottweil R 904 | <<locked>> | 94% | 50,749 psi | 81% | 2861 fps | 95.6% |
| Rottweil R 905 | <<locked>> | 92% | 44,309 psi | 71% | 2795 fps | 95.5% |
| Rottweil R 907 | <<locked>> | 80% | 40,451 psi | 65% | 2631 fps | 95.2% |
| Shooters World Long Rifle | <<locked>> | 80% | 39,392 psi | 63% | 2615 fps | 97% |
| Shooters World Precision | <<locked>> | 80% | 47,732 psi | 77% | 2766 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 37,550 psi | 60% | 2592 fps | 95.2% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 44,164 psi | 71% | 2762 fps | 99.7% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 51,590 psi | 83% | 2851 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 52,881 psi | 85% | 2762 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 44,614 psi | 72% | 2628 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 38,522 psi | 62% | 2556 fps | 95.4% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 43,903 psi | 70% | 2789 fps | 95.3% |
| Somchem S335 | <<locked>> | 80% | 52,562 psi | 84% | 2759 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 43,482 psi | 70% | 2713 fps | 99.8% |
| Somchem S361 | <<locked>> | 94% | 52,286 psi | 84% | 2851 fps | 95.1% |
| Somchem S365 | <<locked>> | 80% | 32,590 psi | 52% | 2566 fps | 99.1% |
| Somchem S385 | <<locked>> | 90% | 42,250 psi | 68% | 2723 fps | 95.8% |
| Vihtavuori N135 | <<locked>> | 80% | 49,748 psi | 80% | 2746 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 49,806 psi | 80% | 2756 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 41,437 psi | 66% | 2641 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 37,492 psi | 60% | 2612 fps | 97.6% |
| Vihtavuori N165 | <<locked>> | 94% | 41,466 psi | 66% | 2697 fps | 95.1% |
| Vihtavuori N540 | <<locked>> | 80% | 48,254 psi | 77% | 2753 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 36,999 psi | 59% | 2608 fps | 97.2% |
| Vihtavuori N555 | <<locked>> | 82% | 30,400 psi | 49% | 2503 fps | 95.9% |
| Vihtavuori N560 | <<locked>> | 98% | 52,025 psi | 83% | 2995 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 36,724 psi | 59% | 2582 fps | 99.2% |
| Winchester 760 | <<locked>> | 80% | 38,290 psi | 61% | 2661 fps | 95.2% |
| Winchester StaBALL HD | <<locked>> | 84% | 26,121 psi | 42% | 2448 fps | 95.2% |
| Winchester StaBALL Match | <<locked>> | 80% | 51,605 psi | 83% | 2861 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 44,643 psi | 72% | 2762 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 92 powders for .300 Win. Mag. loaded with the .308 | 168gr | Sellier & Bellot HPBT. Norma MRP delivers the highest muzzle velocity at 3,077 fps; across all powders the maximum-charge window runs from 1,824 fps to 3,077 fps. Accurate 3100 gives the best case fill at 100 %, and 92 of the 92 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 168.0 gr projectile in 0.308" calls for a 1:12.5 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, Hodgdon Superformance rank at the top here: for .300 Win. Mag. with the .308 | 168gr | Sellier & Bellot HPBT 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.