Load Specifications
Load data in caliber .300 Win. Mag. with .308 | 168gr | Speer Target Match 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% | 54,056 psi | 87% | 2812 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 53,113 psi | 85% | 2828 fps | 98.1% |
| Accurate 3100ᴾ | <<locked>> | 100% | 53,026 psi | 85% | 2917 fps | 99.3% |
| Accurate 4064 | <<locked>> | 84% | 54,534 psi | 87% | 2867 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 55,158 psi | 88% | 2972 fps | 100% |
| ADI AR 2208 | <<locked>> | 86% | 54,766 psi | 88% | 2897 fps | 100% |
| ADI AR 2209 | <<locked>> | 98% | 56,231 psi | 90% | 3012 fps | 97.9% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 53,940 psi | 86% | 3002 fps | 96.2% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 53,621 psi | 86% | 3015 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 55,405 psi | 89% | 2920 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 55,724 psi | 89% | 2946 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 94% | 55,898 psi | 90% | 3028 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 88% | 53,345 psi | 86% | 2995 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 98% | 55,463 psi | 89% | 2999 fps | 97.9% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 52,678 psi | 84% | 2999 fps | 97.6% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 49,574 psi | 79% | 2933 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 43,352 psi | 70% | 2851 fps | 98.6% |
| Alliant Reloder-26 | <<locked>> | 98% | 53,040 psi | 85% | 3071 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 48,124 psi | 77% | 2913 fps | 96.4% |
| Bofors RP3 | <<locked>> | 86% | 56,173 psi | 90% | 2936 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 52,678 psi | 84% | 2999 fps | 97.6% |
| Bofors RP7 | <<locked>> | 90% | 55,695 psi | 89% | 2920 fps | 98.6% |
| Hodgdon H380 | <<locked>> | 84% | 53,084 psi | 85% | 2897 fps | 99.8% |
| Hodgdon H414 | <<locked>> | 88% | 54,984 psi | 88% | 2986 fps | 99% |
| Hodgdon H4350 | <<locked>> | 92% | 55,390 psi | 89% | 2953 fps | 98.1% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 56,318 psi | 90% | 2949 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 54,520 psi | 87% | 2940 fps | 100% |
| Hodgdon Superformance | <<locked>> | 90% | 53,795 psi | 86% | 2999 fps | 98.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,419 psi | 58% | 1827 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 54,215 psi | 87% | 2887 fps | 100% |
| IMR 3031 | <<locked>> | 82% | 53,519 psi | 86% | 2861 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 53,606 psi | 86% | 2871 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 88% | 55,898 psi | 90% | 2900 fps | 99% |
| IMR 4350 | <<locked>> | 92% | 53,040 psi | 85% | 2894 fps | 98.3% |
| IMR 4451 Enduron | <<locked>> | 88% | 54,041 psi | 87% | 2894 fps | 98.7% |
| IMR 4831 | <<locked>> | 98% | 56,434 psi | 90% | 2972 fps | 100% |
| IMR 4895 | <<locked>> | 82% | 53,635 psi | 86% | 2920 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 98% | 55,724 psi | 89% | 2936 fps | 96.2% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 55,405 psi | 89% | 3041 fps | 96.7% |
| Lovex S060 | <<locked>> | 82% | 55,651 psi | 89% | 2864 fps | 100% |
| Lovex S062 | <<locked>> | 84% | 54,447 psi | 87% | 2874 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 54,027 psi | 87% | 2894 fps | 99.5% |
| Lovex S070 | <<locked>> | 92% | 55,288 psi | 89% | 2933 fps | 99.1% |
| Lovex S071ᴾ | <<locked>> | 100% | 43,932 psi | 70% | 2759 fps | 97.9% |
| Norma 201 | <<locked>> | 82% | 55,506 psi | 89% | 2884 fps | 100% |
| Norma 202 | <<locked>> | 82% | 56,376 psi | 90% | 2881 fps | 100% |
| Norma 203B | <<locked>> | 84% | 55,027 psi | 88% | 2930 fps | 100% |
| Norma 204 | <<locked>> | 92% | 53,650 psi | 86% | 2946 fps | 97.3% |
| Norma MRPᴾ | <<locked>> | 100% | 55,956 psi | 90% | 3084 fps | 99.2% |
| Norma URP | <<locked>> | 92% | 53,940 psi | 86% | 2956 fps | 99.9% |
| Ramshot Big Game | <<locked>> | 84% | 55,651 psi | 89% | 2953 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 55,129 psi | 88% | 3045 fps | 97% |
| Ramshot Hunter | <<locked>> | 94% | 56,333 psi | 90% | 3009 fps | 99.6% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 51,750 psi | 83% | 2959 fps | 98% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,898 psi | 59% | 1867 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 53,113 psi | 85% | 2881 fps | 99.1% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 52,968 psi | 85% | 2992 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 55,027 psi | 88% | 2992 fps | 99.9% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 53,577 psi | 86% | 3018 fps | 99.9% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 42,235 psi | 68% | 2858 fps | 96.4% |
| Rottweil R 902 | <<locked>> | 84% | 56,260 psi | 90% | 2884 fps | 100% |
| Rottweil R 903 | <<locked>> | 88% | 56,246 psi | 90% | 2933 fps | 100% |
| Rottweil R 904 | <<locked>> | 96% | 54,404 psi | 87% | 2923 fps | 96.5% |
| Rottweil R 905 | <<locked>> | 98% | 54,592 psi | 88% | 2982 fps | 97.9% |
| Rottweil R 907 | <<locked>> | 90% | 55,695 psi | 89% | 2920 fps | 98.6% |
| Shooters World Long Rifle | <<locked>> | 90% | 54,027 psi | 87% | 2894 fps | 99.5% |
| Shooters World Precision | <<locked>> | 84% | 54,447 psi | 87% | 2874 fps | 100% |
| Shooters World SW4350 | <<locked>> | 92% | 55,288 psi | 89% | 2933 fps | 99.1% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 54,259 psi | 87% | 2940 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 55,506 psi | 89% | 2917 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 54,041 psi | 87% | 2772 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 53,693 psi | 86% | 2844 fps | 98.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 54,114 psi | 87% | 2976 fps | 97.8% |
| Somchem S335 | <<locked>> | 82% | 56,057 psi | 90% | 2812 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 56,202 psi | 90% | 2927 fps | 100% |
| Somchem S361 | <<locked>> | 96% | 56,072 psi | 90% | 2913 fps | 96% |
| Somchem S365 | <<locked>> | 94% | 52,968 psi | 85% | 2956 fps | 100% |
| Somchem S385 | <<locked>> | 98% | 55,434 psi | 89% | 2959 fps | 98.6% |
| Unknown powder | <<locked>> | 90% | 54,462 psi | 87% | 2959 fps | 99.8% |
| Vihtavuori N133 | <<locked>> | 82% | 53,287 psi | 85% | 2749 fps | 100% |
| Vihtavuori N135 | <<locked>> | 82% | 53,316 psi | 85% | 2799 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 56,072 psi | 90% | 2851 fps | 100% |
| Vihtavuori N150 | <<locked>> | 92% | 54,302 psi | 87% | 2861 fps | 100% |
| Vihtavuori N160 | <<locked>> | 90% | 54,897 psi | 88% | 2930 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 49,110 psi | 79% | 2841 fps | 97.2% |
| Vihtavuori N540 | <<locked>> | 84% | 55,782 psi | 89% | 2877 fps | 100% |
| Vihtavuori N550 | <<locked>> | 90% | 55,434 psi | 89% | 2979 fps | 100% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 55,593 psi | 89% | 3012 fps | 100% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 55,695 psi | 89% | 2917 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 54,984 psi | 88% | 2986 fps | 99% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 44,889 psi | 72% | 2989 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 53,606 psi | 86% | 2923 fps | 97.4% |
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% | 50,792 psi | 81% | 2766 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 43,743 psi | 70% | 2661 fps | 96.1% |
| Accurate 3100 | <<locked>> | 88% | 35,056 psi | 56% | 2569 fps | 95.2% |
| Accurate 4064 | <<locked>> | 80% | 48,124 psi | 77% | 2769 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 36,535 psi | 59% | 2621 fps | 97.5% |
| ADI AR 2208 | <<locked>> | 80% | 45,353 psi | 73% | 2736 fps | 99.6% |
| ADI AR 2209 | <<locked>> | 92% | 46,093 psi | 74% | 2831 fps | 95.7% |
| ADI AR 2213 | <<locked>> | 98% | 50,430 psi | 81% | 2936 fps | 95.3% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 50,125 psi | 80% | 2956 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 45,847 psi | 74% | 2762 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 49,037 psi | 79% | 2835 fps | 99.9% |
| Alliant Reloder-16 | <<locked>> | 80% | 35,621 psi | 57% | 2628 fps | 97.5% |
| Alliant Reloder-17 | <<locked>> | 80% | 40,393 psi | 65% | 2759 fps | 99.7% |
| Alliant Reloder-19 | <<locked>> | 92% | 45,658 psi | 73% | 2822 fps | 95.7% |
| Alliant Reloder-22 | <<locked>> | 94% | 43,134 psi | 69% | 2815 fps | 95.1% |
| Alliant Reloder-23 | <<locked>> | 82% | 27,804 psi | 45% | 2428 fps | 95.8% |
| Alliant Reloder-25 | <<locked>> | 94% | 35,781 psi | 57% | 2667 fps | 96.1% |
| Alliant Reloder-26 | 67.1 gr | 84% | 31,879 psi | 51% | 2605 fps | 95.2% |
| Bofors RP15 | <<locked>> | 98% | 45,223 psi | 73% | 2858 fps | 95.6% |
| Bofors RP3 | <<locked>> | 80% | 46,079 psi | 74% | 2776 fps | 100% |
| Bofors RP5 | <<locked>> | 94% | 43,134 psi | 69% | 2815 fps | 95.1% |
| Bofors RP7 | <<locked>> | 80% | 40,712 psi | 65% | 2641 fps | 95.4% |
| Hodgdon H380 | <<locked>> | 80% | 46,572 psi | 75% | 2785 fps | 99.1% |
| Hodgdon H414 | <<locked>> | 80% | 41,800 psi | 67% | 2740 fps | 96.4% |
| Hodgdon H4350 | <<locked>> | 84% | 43,236 psi | 69% | 2730 fps | 95.3% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 33,141 psi | 53% | 2523 fps | 98.2% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 47,848 psi | 77% | 2831 fps | 100% |
| Hodgdon Superformance | 67.6 gr | 82% | 40,248 psi | 65% | 2736 fps | 95.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,064 psi | 43% | 1631 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 47,848 psi | 77% | 2785 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 50,241 psi | 81% | 2812 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 44,672 psi | 72% | 2717 fps | 99.6% |
| IMR 4166 Enduron | <<locked>> | 80% | 43,947 psi | 70% | 2684 fps | 96.9% |
| IMR 4350 | <<locked>> | 84% | 41,292 psi | 66% | 2674 fps | 95.6% |
| IMR 4451 Enduron | <<locked>> | 80% | 42,119 psi | 68% | 2674 fps | 96.3% |
| IMR 4831 | <<locked>> | 80% | 31,952 psi | 51% | 2493 fps | 96% |
| IMR 4895 | <<locked>> | 80% | 50,285 psi | 81% | 2864 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 52,286 psi | 84% | 2881 fps | 95.4% |
| IMR 7828 SSC | <<locked>> | 98% | 51,750 psi | 83% | 2976 fps | 95.8% |
| Lovex S060 | <<locked>> | 80% | 52,504 psi | 84% | 2815 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 48,066 psi | 77% | 2776 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 39,624 psi | 64% | 2621 fps | 97.1% |
| Lovex S070 | <<locked>> | 80% | 37,782 psi | 61% | 2598 fps | 95.3% |
| Lovex S071 | <<locked>> | 94% | 36,216 psi | 58% | 2598 fps | 95.7% |
| Norma 201 | <<locked>> | 80% | 52,301 psi | 84% | 2835 fps | 100% |
| Norma 202 | <<locked>> | 80% | 52,881 psi | 85% | 2831 fps | 100% |
| Norma 203B | <<locked>> | 80% | 48,385 psi | 78% | 2822 fps | 100% |
| Norma 204 | <<locked>> | 88% | 46,978 psi | 75% | 2825 fps | 95.8% |
| Norma MRP | <<locked>> | 90% | 39,465 psi | 63% | 2766 fps | 95.4% |
| Norma URP | <<locked>> | 80% | 36,289 psi | 58% | 2615 fps | 97.3% |
| Ramshot Big Game | <<locked>> | 80% | 48,718 psi | 78% | 2844 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 51,184 psi | 82% | 2976 fps | 96% |
| Ramshot Hunter | <<locked>> | 80% | 35,215 psi | 56% | 2598 fps | 95.1% |
| Ramshot Magnum | <<locked>> | 94% | 41,133 psi | 66% | 2753 fps | 95.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,557 psi | 44% | 1670 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 46,644 psi | 75% | 2766 fps | 98.1% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 42,902 psi | 69% | 2818 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 36,187 psi | 58% | 2635 fps | 97.1% |
| ReloadSwiss RS 70 | 63.4 gr | 80% | 35,360 psi | 57% | 2638 fps | 96.3% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 39,363 psi | 63% | 2789 fps | 95.1% |
| Rottweil R 902 | <<locked>> | 80% | 49,922 psi | 80% | 2789 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 43,366 psi | 70% | 2717 fps | 99.9% |
| Rottweil R 904 | <<locked>> | 94% | 50,966 psi | 82% | 2867 fps | 95.7% |
| Rottweil R 905 | <<locked>> | 92% | 44,759 psi | 72% | 2805 fps | 95.7% |
| Rottweil R 907 | <<locked>> | 80% | 40,712 psi | 65% | 2641 fps | 95.4% |
| Shooters World Long Rifle | <<locked>> | 80% | 39,624 psi | 64% | 2621 fps | 97.1% |
| Shooters World Precision | <<locked>> | 80% | 48,066 psi | 77% | 2776 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 37,782 psi | 61% | 2598 fps | 95.3% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 44,454 psi | 71% | 2772 fps | 99.7% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 51,880 psi | 83% | 2861 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 44,933 psi | 72% | 2635 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 38,754 psi | 62% | 2562 fps | 95.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 44,353 psi | 71% | 2799 fps | 95.5% |
| Somchem S335 | <<locked>> | 80% | 52,881 psi | 85% | 2766 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 43,816 psi | 70% | 2720 fps | 99.8% |
| Somchem S361 | <<locked>> | 94% | 52,663 psi | 84% | 2861 fps | 95.2% |
| Somchem S365 | <<locked>> | 80% | 32,880 psi | 53% | 2572 fps | 99.2% |
| Somchem S385 | <<locked>> | 88% | 39,769 psi | 64% | 2671 fps | 95% |
| Unknown powder | <<locked>> | 80% | 39,233 psi | 63% | 2674 fps | 97.5% |
| Vihtavuori N133 | <<locked>> | 80% | 50,140 psi | 80% | 2703 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 50,082 psi | 80% | 2753 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 49,516 psi | 79% | 2756 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 37,507 psi | 60% | 2566 fps | 99.8% |
| Vihtavuori N160 | <<locked>> | 80% | 39,276 psi | 63% | 2648 fps | 98.1% |
| Vihtavuori N165 | <<locked>> | 96% | 43,192 psi | 69% | 2733 fps | 95.7% |
| Vihtavuori N540 | <<locked>> | 80% | 49,153 psi | 79% | 2779 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 39,914 psi | 64% | 2694 fps | 98.1% |
| Vihtavuori N555 | <<locked>> | 80% | 28,616 psi | 46% | 2454 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 36,941 psi | 59% | 2589 fps | 99.3% |
| Winchester 760 | <<locked>> | 80% | 41,800 psi | 67% | 2740 fps | 96.4% |
| Winchester StaBALL HD | <<locked>> | 84% | 26,295 psi | 42% | 2454 fps | 95.4% |
| Winchester Supreme 780 | <<locked>> | 92% | 46,296 psi | 74% | 2799 fps | 95.8% |
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 102 powders for .300 Win. Mag. loaded with the .308 | 168gr | Speer Target Match. Norma MRP delivers the highest muzzle velocity at 3,084 fps; across all powders the maximum-charge window runs from 1,827 fps to 3,084 fps. Accurate 3100 gives the best case fill at 100 %, and 102 of the 102 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (430 MPa), the top charges use 55–90 %, leaving at least 10 % headroom. The 168.0 gr projectile in 0.308" calls for a 1:7.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate MAGPRO, 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-26, Hodgdon Superformance rank at the top here: for .300 Win. Mag. with the .308 | 168gr | Speer Target Match they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate MAGPRO, ADI AR 2225, Baschieri & Pellagri 109 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.