Load Specifications
Load data in caliber .300 Win. Mag. with .308 | 168gr | Barnes TAC-X 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 60, Hodgdon H414 and Alliant Reloder-16.
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% | 54,534 psi | 87% | 2822 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 52,953 psi | 85% | 2835 fps | 97.9% |
| Accurate 3100ᴾ | <<locked>> | 100% | 49,632 psi | 80% | 2861 fps | 98.8% |
| Accurate 4064 | <<locked>> | 86% | 54,882 psi | 88% | 2874 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 55,622 psi | 89% | 2976 fps | 100% |
| ADI AR 2206H | <<locked>> | 82% | 54,447 psi | 87% | 2904 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 55,782 psi | 89% | 2913 fps | 100% |
| ADI AR 2209 | <<locked>> | 98% | 53,432 psi | 86% | 2963 fps | 97.3% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 55,013 psi | 88% | 3035 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 56,217 psi | 90% | 2933 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 53,142 psi | 85% | 2904 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 94% | 53,272 psi | 85% | 2986 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 90% | 54,273 psi | 87% | 3009 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 56,333 psi | 90% | 3009 fps | 97.9% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 49,734 psi | 80% | 2943 fps | 96.8% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 46,731 psi | 75% | 2884 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 40,799 psi | 65% | 2789 fps | 97.7% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 53,621 psi | 86% | 3077 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 54,621 psi | 88% | 2923 fps | 100% |
| Bofors RP3 | <<locked>> | 86% | 53,359 psi | 86% | 2894 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 49,734 psi | 80% | 2943 fps | 96.8% |
| Bofors RP7 | <<locked>> | 90% | 53,113 psi | 85% | 2874 fps | 98.1% |
| Hodgdon H380 | <<locked>> | 86% | 54,041 psi | 87% | 2910 fps | 99.8% |
| Hodgdon H414 | <<locked>> | 92% | 54,534 psi | 87% | 2976 fps | 98.9% |
| Hodgdon H4350 | <<locked>> | 90% | 54,592 psi | 88% | 2936 fps | 97.8% |
| Hodgdon H4895 | <<locked>> | 82% | 55,042 psi | 88% | 2913 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 53,301 psi | 85% | 2907 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 55,347 psi | 89% | 2953 fps | 100% |
| Hodgdon Superformance | <<locked>> | 92% | 54,795 psi | 88% | 3012 fps | 98.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,984 psi | 58% | 1811 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 56,376 psi | 90% | 2920 fps | 100% |
| IMR 3031 | <<locked>> | 82% | 55,622 psi | 89% | 2890 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 55,245 psi | 89% | 2894 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 84% | 54,650 psi | 88% | 2877 fps | 98.8% |
| IMR 4350 | <<locked>> | 94% | 54,157 psi | 87% | 2910 fps | 98.3% |
| IMR 4451 Enduron | <<locked>> | 90% | 55,143 psi | 88% | 2910 fps | 98.8% |
| IMR 4831 | <<locked>> | 96% | 56,144 psi | 90% | 2969 fps | 100% |
| IMR 4895 | <<locked>> | 84% | 54,549 psi | 87% | 2930 fps | 100% |
| Lovex D073.6 | <<locked>> | 82% | 54,534 psi | 87% | 2877 fps | 100% |
| Lovex S060 | <<locked>> | 82% | 53,592 psi | 86% | 2831 fps | 100% |
| Lovex S062 | <<locked>> | 86% | 55,100 psi | 88% | 2884 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 54,665 psi | 88% | 2900 fps | 99.5% |
| Lovex S070 | <<locked>> | 94% | 55,970 psi | 90% | 2943 fps | 99.1% |
| Lovex S071ᴾ | <<locked>> | 100% | 40,872 psi | 66% | 2700 fps | 97% |
| Norma 201 | <<locked>> | 82% | 53,026 psi | 85% | 2844 fps | 100% |
| Norma 202 | <<locked>> | 82% | 53,969 psi | 87% | 2848 fps | 100% |
| Norma 203B | <<locked>> | 86% | 55,825 psi | 90% | 2940 fps | 100% |
| Norma 204 | <<locked>> | 94% | 54,897 psi | 88% | 2963 fps | 97.4% |
| Norma MRPᴾ | <<locked>> | 100% | 52,634 psi | 84% | 3028 fps | 98.6% |
| Norma URP | <<locked>> | 94% | 54,636 psi | 88% | 2966 fps | 99.9% |
| Ramshot Big Game | <<locked>> | 84% | 53,200 psi | 85% | 2917 fps | 100% |
| Ramshot Hunter | <<locked>> | 94% | 53,534 psi | 86% | 2963 fps | 99.3% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,608 psi | 59% | 1857 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 54,056 psi | 87% | 2894 fps | 99.1% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 53,940 psi | 86% | 2969 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 53,896 psi | 86% | 3005 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 55,724 psi | 89% | 3002 fps | 99.9% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 54,549 psi | 87% | 3035 fps | 99.9% |
| Rottweil R 902 | <<locked>> | 84% | 53,766 psi | 86% | 2848 fps | 100% |
| Rottweil R 903 | <<locked>> | 88% | 53,461 psi | 86% | 2890 fps | 100% |
| Rottweil R 904 | <<locked>> | 98% | 55,230 psi | 89% | 2933 fps | 96.5% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 55,259 psi | 89% | 2989 fps | 97.8% |
| Rottweil R 907 | <<locked>> | 90% | 53,113 psi | 85% | 2874 fps | 98.1% |
| Shooters World Long Rifle | <<locked>> | 92% | 54,665 psi | 88% | 2900 fps | 99.5% |
| Shooters World Match Rifle | <<locked>> | 82% | 54,534 psi | 87% | 2877 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 55,100 psi | 88% | 2884 fps | 100% |
| Shooters World SW4350 | <<locked>> | 94% | 55,970 psi | 90% | 2943 fps | 99.1% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 55,376 psi | 89% | 2956 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 55,811 psi | 89% | 2910 fps | 99.8% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 53,098 psi | 85% | 2877 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 54,230 psi | 87% | 2782 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 55,027 psi | 88% | 2782 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 54,549 psi | 87% | 2851 fps | 98.8% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 54,766 psi | 88% | 2982 fps | 97.7% |
| Somchem S335 | <<locked>> | 82% | 53,708 psi | 86% | 2779 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 55,564 psi | 89% | 2897 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 53,592 psi | 86% | 2887 fps | 100% |
| Somchem S365 | <<locked>> | 96% | 53,505 psi | 86% | 2966 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 56,101 psi | 90% | 2966 fps | 98.6% |
| Vihtavuori N133 | <<locked>> | 82% | 54,795 psi | 88% | 2766 fps | 100% |
| Vihtavuori N135 | <<locked>> | 84% | 54,099 psi | 87% | 2812 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 54,476 psi | 87% | 2825 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 54,955 psi | 88% | 2864 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 53,359 psi | 86% | 2907 fps | 99.9% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 48,312 psi | 77% | 2825 fps | 96.8% |
| Vihtavuori N540 | <<locked>> | 86% | 56,217 psi | 90% | 2871 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 55,912 psi | 90% | 2963 fps | 99.9% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 52,344 psi | 84% | 2963 fps | 100% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 53,185 psi | 85% | 2877 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 54,795 psi | 88% | 2979 fps | 98.9% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 41,916 psi | 67% | 2923 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 82% | 53,113 psi | 85% | 2884 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 52,547 psi | 84% | 2904 fps | 97.1% |
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% | 47,601 psi | 76% | 2720 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 46,369 psi | 74% | 2717 fps | 96.5% |
| Accurate 3100 | <<locked>> | 92% | 37,478 psi | 60% | 2628 fps | 96% |
| Accurate 4064 | <<locked>> | 80% | 45,121 psi | 72% | 2720 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 33,968 psi | 54% | 2562 fps | 96.5% |
| ADI AR 2206H | <<locked>> | 80% | 51,184 psi | 82% | 2851 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 43,453 psi | 70% | 2697 fps | 99.2% |
| ADI AR 2209 | <<locked>> | 94% | 46,949 psi | 75% | 2844 fps | 95.7% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 47,630 psi | 76% | 2910 fps | 99.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 43,482 psi | 70% | 2720 fps | 99.9% |
| Alliant Reloder-15 | <<locked>> | 80% | 46,659 psi | 75% | 2792 fps | 99.7% |
| Alliant Reloder-16 | 56.5 gr | 80% | 33,794 psi | 54% | 2579 fps | 96.7% |
| Alliant Reloder-17 | <<locked>> | 80% | 38,029 psi | 61% | 2707 fps | 99.3% |
| Alliant Reloder-19 | <<locked>> | 94% | 46,166 psi | 74% | 2831 fps | 95.7% |
| Alliant Reloder-22 | <<locked>> | 98% | 46,369 psi | 74% | 2881 fps | 95.9% |
| Alliant Reloder-23 | <<locked>> | 84% | 27,746 psi | 44% | 2431 fps | 95.6% |
| Alliant Reloder-25 | <<locked>> | 96% | 35,853 psi | 57% | 2667 fps | 95.9% |
| Alliant Reloder-26 | <<locked>> | 86% | 31,894 psi | 51% | 2605 fps | 95% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 50,923 psi | 82% | 2864 fps | 99.8% |
| Bofors RP3 | <<locked>> | 80% | 43,497 psi | 70% | 2730 fps | 99.9% |
| Bofors RP5 | <<locked>> | 98% | 46,369 psi | 74% | 2881 fps | 95.9% |
| Bofors RP7 | <<locked>> | 82% | 41,118 psi | 66% | 2648 fps | 95.3% |
| Hodgdon H380 | <<locked>> | 80% | 44,048 psi | 71% | 2736 fps | 98.7% |
| Hodgdon H414 | 61 gr | 82% | 38,885 psi | 62% | 2677 fps | 95.3% |
| Hodgdon H4350 | <<locked>> | 84% | 44,860 psi | 72% | 2759 fps | 95.6% |
| Hodgdon H4895 | <<locked>> | 80% | 51,721 psi | 83% | 2861 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 31,154 psi | 50% | 2474 fps | 97.4% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 48,312 psi | 77% | 2841 fps | 100% |
| Hodgdon Superformance | <<locked>> | 84% | 40,843 psi | 65% | 2746 fps | 95.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,760 psi | 43% | 1617 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 49,530 psi | 79% | 2812 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 52,069 psi | 83% | 2841 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 45,672 psi | 73% | 2733 fps | 99.6% |
| IMR 4166 Enduron | <<locked>> | 80% | 48,124 psi | 77% | 2762 fps | 97.7% |
| IMR 4350 | <<locked>> | 86% | 41,887 psi | 67% | 2684 fps | 95.6% |
| IMR 4451 Enduron | <<locked>> | 80% | 40,190 psi | 64% | 2628 fps | 95.5% |
| IMR 4831 | <<locked>> | 80% | 32,880 psi | 53% | 2520 fps | 96.2% |
| IMR 4895 | <<locked>> | 80% | 47,877 psi | 77% | 2822 fps | 99.9% |
| Lovex D073.6 | <<locked>> | 80% | 51,169 psi | 82% | 2828 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 50,386 psi | 81% | 2779 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 45,629 psi | 73% | 2730 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 37,463 psi | 60% | 2572 fps | 96.3% |
| Lovex S070 | <<locked>> | 82% | 38,130 psi | 61% | 2605 fps | 95.2% |
| Lovex S071 | <<locked>> | 96% | 35,839 psi | 57% | 2589 fps | 95.4% |
| Norma 201 | <<locked>> | 80% | 49,806 psi | 80% | 2792 fps | 100% |
| Norma 202 | <<locked>> | 80% | 50,473 psi | 81% | 2795 fps | 100% |
| Norma 203B | <<locked>> | 80% | 46,035 psi | 74% | 2779 fps | 99.8% |
| Norma 204 | <<locked>> | 90% | 47,776 psi | 77% | 2838 fps | 95.8% |
| Norma MRP | <<locked>> | 92% | 39,769 psi | 64% | 2772 fps | 95.3% |
| Norma URP | <<locked>> | 80% | 34,243 psi | 55% | 2566 fps | 96.5% |
| Ramshot Big Game | <<locked>> | 80% | 46,253 psi | 74% | 2799 fps | 99.8% |
| Ramshot Hunter | <<locked>> | 82% | 35,578 psi | 57% | 2608 fps | 95% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,209 psi | 44% | 1657 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 44,324 psi | 71% | 2720 fps | 97.4% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 50,285 psi | 81% | 2910 fps | 99.9% |
| ReloadSwiss RS 60 | 60.8 gr | 80% | 40,509 psi | 65% | 2769 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 33,852 psi | 54% | 2582 fps | 96.1% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 33,315 psi | 53% | 2582 fps | 95.1% |
| Rottweil R 902 | <<locked>> | 80% | 47,398 psi | 76% | 2746 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 41,002 psi | 66% | 2674 fps | 99.6% |
| Rottweil R 904 | <<locked>> | 96% | 51,851 psi | 83% | 2877 fps | 95.7% |
| Rottweil R 905 | <<locked>> | 94% | 45,136 psi | 72% | 2812 fps | 95.6% |
| Rottweil R 907 | <<locked>> | 82% | 41,118 psi | 66% | 2648 fps | 95.3% |
| Shooters World Long Rifle | <<locked>> | 80% | 37,463 psi | 60% | 2572 fps | 96.3% |
| Shooters World Match Rifle | <<locked>> | 80% | 51,169 psi | 82% | 2828 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 45,629 psi | 73% | 2730 fps | 100% |
| Shooters World SW4350 | <<locked>> | 82% | 38,130 psi | 61% | 2605 fps | 95.2% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 42,279 psi | 68% | 2730 fps | 99.4% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 51,938 psi | 83% | 2851 fps | 99.6% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 49,719 psi | 80% | 2822 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 50,879 psi | 82% | 2733 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 42,757 psi | 69% | 2595 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 39,305 psi | 63% | 2575 fps | 95.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 44,701 psi | 72% | 2805 fps | 95.4% |
| Somchem S335 | <<locked>> | 80% | 50,546 psi | 81% | 2730 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 51,793 psi | 83% | 2841 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 41,408 psi | 66% | 2674 fps | 99.6% |
| Somchem S365 | <<locked>> | 80% | 30,661 psi | 49% | 2516 fps | 98.5% |
| Somchem S385 | <<locked>> | 92% | 42,815 psi | 69% | 2736 fps | 95.8% |
| Vihtavuori N133 | <<locked>> | 80% | 51,445 psi | 82% | 2720 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 47,485 psi | 76% | 2713 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 48,037 psi | 77% | 2730 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 39,668 psi | 64% | 2608 fps | 99.9% |
| Vihtavuori N160 | <<locked>> | 80% | 35,607 psi | 57% | 2569 fps | 96.9% |
| Vihtavuori N165 | <<locked>> | 96% | 42,206 psi | 68% | 2710 fps | 95.2% |
| Vihtavuori N540 | <<locked>> | 80% | 46,151 psi | 74% | 2717 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 34,940 psi | 56% | 2566 fps | 96.5% |
| Vihtavuori N555 | <<locked>> | 84% | 30,327 psi | 49% | 2507 fps | 95.7% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 34,983 psi | 56% | 2543 fps | 98.8% |
| Winchester 760 | <<locked>> | 82% | 39,044 psi | 63% | 2680 fps | 95.3% |
| Winchester StaBALL HD | <<locked>> | 88% | 27,891 psi | 45% | 2520 fps | 96.5% |
| Winchester StaBALL Match | <<locked>> | 80% | 49,458 psi | 79% | 2825 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 45,687 psi | 73% | 2782 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 93 powders for .300 Win. Mag. loaded with the .308 | 168gr | Barnes TAC-X. Alliant Reloder-26 delivers the highest muzzle velocity at 3,077 fps; across all powders the maximum-charge window runs from 1,811 fps to 3,077 fps. Accurate 3100 gives the best case fill at 100 %, and 93 of the 93 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 1:12.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, Alliant Reloder-19, 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 60, Hodgdon H414, Alliant Reloder-16 rank at the top here: for .300 Win. Mag. with the .308 | 168gr | Barnes TAC-X 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.