Load Specifications
Load data in caliber .300 Win. Mag. with .308 | 155gr | Barnes Match Burner BT bullet and 93 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-16 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>> | 84% | 53,679 psi | 86% | 2917 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 53,156 psi | 85% | 2920 fps | 97.2% |
| Accurate 3100ᴾ | <<locked>> | 100% | 48,298 psi | 77% | 2933 fps | 97.9% |
| Accurate 4064 | <<locked>> | 86% | 53,824 psi | 86% | 2969 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 54,230 psi | 87% | 3061 fps | 99.7% |
| ADI AR 2206H | <<locked>> | 82% | 53,432 psi | 86% | 2995 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 54,549 psi | 87% | 2999 fps | 99.9% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 55,564 psi | 89% | 3094 fps | 96.8% |
| ADI Benchmark 8208 | <<locked>> | 82% | 55,622 psi | 89% | 2995 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 53,374 psi | 86% | 3117 fps | 99.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 54,926 psi | 88% | 3022 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 55,317 psi | 89% | 3041 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 96% | 54,998 psi | 88% | 3120 fps | 99.9% |
| Alliant Reloder-17 | <<locked>> | 92% | 56,304 psi | 90% | 3153 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 54,592 psi | 88% | 3081 fps | 96.8% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 45,368 psi | 73% | 2959 fps | 99.8% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 39,827 psi | 64% | 2851 fps | 96.3% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 51,764 psi | 83% | 3150 fps | 99.6% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 53,287 psi | 85% | 3009 fps | 99.7% |
| Bofors RP3 | <<locked>> | 88% | 55,854 psi | 90% | 3038 fps | 100% |
| Bofors RP7 | <<locked>> | 92% | 55,463 psi | 89% | 3012 fps | 97.8% |
| Hodgdon BL-C2 | <<locked>> | 82% | 55,376 psi | 89% | 3025 fps | 100% |
| Hodgdon H380 | <<locked>> | 86% | 52,852 psi | 85% | 2995 fps | 99.4% |
| Hodgdon H414 | <<locked>> | 90% | 54,505 psi | 87% | 3077 fps | 98.3% |
| Hodgdon H4350 | <<locked>> | 94% | 54,940 psi | 88% | 3041 fps | 97.1% |
| Hodgdon H4895 | <<locked>> | 82% | 54,012 psi | 87% | 3005 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 55,245 psi | 89% | 3041 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 54,070 psi | 87% | 3041 fps | 100% |
| Hodgdon Superformance | <<locked>> | 92% | 53,287 psi | 85% | 3087 fps | 97.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,056 psi | 58% | 1890 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 54,215 psi | 87% | 2992 fps | 100% |
| IMR 3031 | <<locked>> | 84% | 52,939 psi | 85% | 2966 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 53,388 psi | 86% | 2969 fps | 99.9% |
| IMR 4166 Enduron | <<locked>> | 90% | 55,898 psi | 90% | 2995 fps | 98.3% |
| IMR 4350 | <<locked>> | 96% | 56,130 psi | 90% | 3041 fps | 98% |
| IMR 4451 Enduron | <<locked>> | 90% | 53,824 psi | 86% | 2989 fps | 98% |
| IMR 4831ᴾ | <<locked>> | 100% | 55,405 psi | 89% | 3064 fps | 99.8% |
| IMR 4895 | <<locked>> | 84% | 53,185 psi | 85% | 3018 fps | 100% |
| IMR 8208 XBR | <<locked>> | 82% | 55,622 psi | 89% | 2995 fps | 100% |
| Lovex D073.6 | <<locked>> | 82% | 53,447 psi | 86% | 2969 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 55,912 psi | 90% | 2972 fps | 100% |
| Lovex S062 | <<locked>> | 86% | 54,085 psi | 87% | 2976 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 53,650 psi | 86% | 2986 fps | 99% |
| Lovex S070 | <<locked>> | 94% | 54,578 psi | 88% | 3022 fps | 98.4% |
| Norma 201 | <<locked>> | 84% | 55,521 psi | 89% | 2992 fps | 100% |
| Norma 202 | <<locked>> | 84% | 56,101 psi | 90% | 2989 fps | 100% |
| Norma 203B | <<locked>> | 86% | 54,563 psi | 87% | 3028 fps | 100% |
| Norma 204 | <<locked>> | 94% | 53,287 psi | 85% | 3035 fps | 96.2% |
| Norma MRPᴾ | <<locked>> | 100% | 51,010 psi | 82% | 3100 fps | 97.6% |
| Norma URP | <<locked>> | 94% | 52,982 psi | 85% | 3041 fps | 99.6% |
| Ramshot Big Game | <<locked>> | 86% | 55,216 psi | 89% | 3051 fps | 100% |
| Ramshot Hunter | <<locked>> | 96% | 55,564 psi | 89% | 3100 fps | 99% |
| Ramshot TAC | <<locked>> | 82% | 55,796 psi | 89% | 3015 fps | 99.3% |
| Ramshot Wild Boar | <<locked>> | 82% | 55,724 psi | 89% | 3031 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,492 psi | 59% | 1929 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 53,040 psi | 85% | 2979 fps | 98.4% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 56,246 psi | 90% | 3114 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 55,999 psi | 90% | 3150 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 54,012 psi | 87% | 3084 fps | 99.6% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 52,866 psi | 85% | 3107 fps | 99.5% |
| Rottweil R 902 | <<locked>> | 86% | 56,057 psi | 90% | 2989 fps | 100% |
| Rottweil R 903 | <<locked>> | 90% | 55,666 psi | 89% | 3031 fps | 100% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 53,563 psi | 86% | 3064 fps | 96.7% |
| Rottweil R 907 | <<locked>> | 92% | 55,463 psi | 89% | 3012 fps | 97.8% |
| Shooters World Long Rifle | <<locked>> | 92% | 53,650 psi | 86% | 2986 fps | 99% |
| Shooters World Match Rifle | <<locked>> | 82% | 53,447 psi | 86% | 2969 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 54,085 psi | 87% | 2976 fps | 100% |
| Shooters World SW4350 | <<locked>> | 94% | 54,578 psi | 88% | 3022 fps | 98.4% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 53,838 psi | 86% | 3038 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 54,578 psi | 88% | 2995 fps | 99.5% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 55,390 psi | 89% | 3018 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 53,214 psi | 85% | 2874 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 53,969 psi | 87% | 2877 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 53,519 psi | 86% | 2933 fps | 98% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 53,069 psi | 85% | 3054 fps | 96.6% |
| Somchem S335 | <<locked>> | 84% | 56,159 psi | 90% | 2920 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 54,230 psi | 87% | 2982 fps | 100% |
| Somchem S355 | <<locked>> | 90% | 55,796 psi | 89% | 3028 fps | 100% |
| Somchem S365 | <<locked>> | 98% | 55,245 psi | 89% | 3104 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 54,462 psi | 87% | 3041 fps | 97.7% |
| Unknown powder | <<locked>> | 92% | 53,780 psi | 86% | 3051 fps | 99.4% |
| Vihtavuori N133 | <<locked>> | 84% | 53,229 psi | 85% | 2858 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 56,318 psi | 90% | 2953 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 56,028 psi | 90% | 2959 fps | 100% |
| Vihtavuori N150 | <<locked>> | 94% | 53,940 psi | 86% | 2959 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 54,317 psi | 87% | 3022 fps | 99.7% |
| Vihtavuori N540 | <<locked>> | 86% | 55,695 psi | 89% | 2986 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 54,708 psi | 88% | 3071 fps | 99.7% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 50,749 psi | 81% | 3045 fps | 99.8% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 55,390 psi | 89% | 3015 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 54,505 psi | 87% | 3077 fps | 98.3% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 40,857 psi | 66% | 2989 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 53,084 psi | 85% | 3009 fps | 96.3% |
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% | 47,065 psi | 75% | 2815 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 46,572 psi | 75% | 2802 fps | 95.7% |
| Accurate 3100 | <<locked>> | 94% | 39,262 psi | 63% | 2756 fps | 95.6% |
| Accurate 4064 | <<locked>> | 80% | 44,512 psi | 71% | 2812 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 33,315 psi | 53% | 2635 fps | 95.3% |
| ADI AR 2206H | <<locked>> | 80% | 50,082 psi | 80% | 2936 fps | 99.8% |
| ADI AR 2208 | <<locked>> | 80% | 42,569 psi | 68% | 2776 fps | 98.6% |
| ADI AR 2209 | <<locked>> | 96% | 48,776 psi | 78% | 2972 fps | 95.2% |
| ADI Benchmark 8208 | <<locked>> | 80% | 52,170 psi | 84% | 2940 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 46,224 psi | 74% | 2986 fps | 99.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 42,598 psi | 68% | 2802 fps | 99.6% |
| Alliant Reloder-15 | <<locked>> | 80% | 45,672 psi | 73% | 2871 fps | 99.2% |
| Alliant Reloder-16 | 57.3 gr | 80% | 33,185 psi | 53% | 2648 fps | 95.3% |
| Alliant Reloder-17 | <<locked>> | 80% | 37,246 psi | 60% | 2782 fps | 98.5% |
| Alliant Reloder-19 | <<locked>> | 96% | 48,124 psi | 77% | 2963 fps | 95.2% |
| Alliant Reloder-23 | <<locked>> | 86% | 29,066 psi | 47% | 2549 fps | 95.2% |
| Alliant Reloder-25 | <<locked>> | 98% | 37,333 psi | 60% | 2785 fps | 95.3% |
| Alliant Reloder-26 | <<locked>> | 90% | 35,998 psi | 58% | 2805 fps | 95.8% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 49,748 psi | 80% | 2946 fps | 99.4% |
| Bofors RP3 | <<locked>> | 80% | 42,656 psi | 68% | 2808 fps | 99.6% |
| Bofors RP7 | <<locked>> | 86% | 45,847 psi | 74% | 2838 fps | 95.7% |
| Hodgdon BL-C2 | <<locked>> | 80% | 51,706 psi | 83% | 2966 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 43,308 psi | 69% | 2818 fps | 97.9% |
| Hodgdon H414 | <<locked>> | 82% | 41,220 psi | 66% | 2822 fps | 95.1% |
| Hodgdon H4350 | <<locked>> | 90% | 48,515 psi | 78% | 2927 fps | 95.7% |
| Hodgdon H4895 | <<locked>> | 80% | 50,589 psi | 81% | 2949 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 30,589 psi | 49% | 2543 fps | 96.2% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 44,309 psi | 71% | 2871 fps | 99.8% |
| Hodgdon Superformance | 70.1 gr | 86% | 42,859 psi | 69% | 2884 fps | 95% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,818 psi | 43% | 1686 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 44,918 psi | 72% | 2828 fps | 99.6% |
| IMR 3031 | <<locked>> | 80% | 46,746 psi | 75% | 2867 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 41,669 psi | 67% | 2753 fps | 98.6% |
| IMR 4166 Enduron | <<locked>> | 80% | 41,234 psi | 66% | 2717 fps | 95% |
| IMR 4350 | <<locked>> | 88% | 43,569 psi | 70% | 2812 fps | 95.1% |
| IMR 4451 Enduron | <<locked>> | 82% | 42,061 psi | 67% | 2759 fps | 95.2% |
| IMR 4831 | <<locked>> | 84% | 33,315 psi | 53% | 2618 fps | 95.4% |
| IMR 4895 | <<locked>> | 80% | 46,818 psi | 75% | 2904 fps | 99.6% |
| IMR 8208 XBR | <<locked>> | 80% | 52,170 psi | 84% | 2940 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 50,038 psi | 80% | 2913 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 49,429 psi | 79% | 2864 fps | 99.8% |
| Lovex S062 | <<locked>> | 80% | 44,846 psi | 72% | 2818 fps | 99.9% |
| Lovex S065 | <<locked>> | 80% | 36,898 psi | 59% | 2648 fps | 95.1% |
| Lovex S070 | <<locked>> | 86% | 42,482 psi | 68% | 2792 fps | 95.7% |
| Norma 201 | <<locked>> | 80% | 48,979 psi | 79% | 2884 fps | 100% |
| Norma 202 | <<locked>> | 80% | 49,414 psi | 79% | 2884 fps | 100% |
| Norma 203B | <<locked>> | 80% | 45,020 psi | 72% | 2861 fps | 99.4% |
| Norma 204 | <<locked>> | 92% | 49,603 psi | 80% | 2969 fps | 95.3% |
| Norma MRP | <<locked>> | 96% | 44,396 psi | 71% | 2966 fps | 95.9% |
| Norma URP | <<locked>> | 80% | 33,504 psi | 54% | 2638 fps | 95.2% |
| Ramshot Big Game | <<locked>> | 80% | 44,947 psi | 72% | 2874 fps | 99.3% |
| Ramshot Hunter | <<locked>> | 86% | 39,755 psi | 64% | 2799 fps | 95.6% |
| Ramshot TAC | <<locked>> | 80% | 52,185 psi | 84% | 2956 fps | 98.9% |
| Ramshot Wild Boar | <<locked>> | 80% | 52,054 psi | 83% | 2972 fps | 99.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,267 psi | 44% | 1729 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 43,511 psi | 70% | 2799 fps | 96.4% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 48,849 psi | 78% | 2989 fps | 99.5% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 39,595 psi | 63% | 2851 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 35,549 psi | 57% | 2713 fps | 95.8% |
| ReloadSwiss RS 70 | 65.8 gr | 84% | 37,507 psi | 60% | 2779 fps | 95.9% |
| Rottweil R 902 | <<locked>> | 80% | 46,688 psi | 75% | 2835 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 40,277 psi | 65% | 2756 fps | 99.1% |
| Rottweil R 905 | <<locked>> | 96% | 46,876 psi | 75% | 2940 fps | 95.1% |
| Rottweil R 907 | <<locked>> | 86% | 45,847 psi | 74% | 2838 fps | 95.7% |
| Shooters World Long Rifle | <<locked>> | 80% | 36,898 psi | 59% | 2648 fps | 95.1% |
| Shooters World Match Rifle | <<locked>> | 80% | 50,038 psi | 80% | 2913 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 44,846 psi | 72% | 2818 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 86% | 42,482 psi | 68% | 2792 fps | 95.7% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 41,162 psi | 66% | 2802 fps | 98.8% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 50,908 psi | 82% | 2933 fps | 99.1% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 48,530 psi | 78% | 2904 fps | 99.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 49,995 psi | 80% | 2825 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 42,018 psi | 67% | 2684 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 41,249 psi | 66% | 2703 fps | 95.1% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 49,734 psi | 80% | 2995 fps | 95.8% |
| Somchem S335 | <<locked>> | 80% | 49,705 psi | 80% | 2822 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 50,633 psi | 81% | 2923 fps | 99.8% |
| Somchem S355 | <<locked>> | 80% | 40,712 psi | 65% | 2756 fps | 99.1% |
| Somchem S365 | <<locked>> | 80% | 30,081 psi | 48% | 2585 fps | 97.5% |
| Somchem S385 | <<locked>> | 94% | 44,556 psi | 71% | 2861 fps | 95.4% |
| Unknown powder | <<locked>> | 80% | 36,216 psi | 58% | 2697 fps | 95.5% |
| Vihtavuori N133 | <<locked>> | 80% | 47,195 psi | 76% | 2766 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 46,557 psi | 75% | 2805 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 46,427 psi | 74% | 2808 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 34,911 psi | 56% | 2598 fps | 98.9% |
| Vihtavuori N160 | <<locked>> | 80% | 36,216 psi | 58% | 2667 fps | 96.2% |
| Vihtavuori N540 | <<locked>> | 80% | 45,919 psi | 74% | 2828 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 36,840 psi | 59% | 2713 fps | 96.3% |
| Vihtavuori N555 | <<locked>> | 86% | 31,807 psi | 51% | 2635 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 34,360 psi | 55% | 2612 fps | 97.9% |
| Winchester 760 | <<locked>> | 82% | 41,220 psi | 66% | 2822 fps | 95.1% |
| Winchester StaBALL HD | <<locked>> | 90% | 29,312 psi | 47% | 2641 fps | 96% |
| Winchester Supreme 780 | <<locked>> | 96% | 49,211 psi | 79% | 2940 fps | 95.4% |
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 109 powders for .300 Win. Mag. loaded with the .308 | 155gr | Barnes Match Burner BT. Alliant Reloder-17 delivers the highest muzzle velocity at 3,153 fps; across all powders the maximum-charge window runs from 1,890 fps to 3,153 fps. Accurate 3100 gives the best case fill at 100 %, and 109 of the 109 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 155.0 gr projectile in 0.308" calls for a 1:12.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, ADI AR 2209, ADI AR 2213 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-16, Hodgdon Superformance rank at the top here: for .300 Win. Mag. with the .308 | 155gr | Barnes Match Burner BT they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, ADI AR 2213, Bofors RP15, Hodgdon H4831 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.