Load Specifications
Load data in caliber .300 Win. Mag. with .308 | 175gr | Prvi Partizan FMJ BT bullet and 91 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% | 54,404 psi | 87% | 2753 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 55,463 psi | 89% | 2815 fps | 98.6% |
| Accurate 3100ᴾ | <<locked>> | 100% | 52,895 psi | 85% | 2854 fps | 99.4% |
| Accurate 4064 | <<locked>> | 84% | 54,781 psi | 88% | 2805 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 55,361 psi | 89% | 2913 fps | 100% |
| ADI AR 2208 | <<locked>> | 86% | 54,766 psi | 88% | 2838 fps | 100% |
| ADI AR 2209 | <<locked>> | 98% | 56,231 psi | 90% | 2949 fps | 98.2% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 53,838 psi | 86% | 2940 fps | 96.5% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 53,838 psi | 86% | 2956 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 55,477 psi | 89% | 2858 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 55,796 psi | 89% | 2881 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 94% | 55,840 psi | 90% | 2963 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 88% | 53,548 psi | 86% | 2936 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 98% | 55,506 psi | 89% | 2940 fps | 98.1% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 52,620 psi | 84% | 2936 fps | 97.8% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 49,777 psi | 80% | 2877 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 43,410 psi | 70% | 2795 fps | 98.8% |
| Alliant Reloder-26 | <<locked>> | 98% | 53,142 psi | 85% | 3009 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 48,385 psi | 78% | 2861 fps | 96.8% |
| Bofors RP3 | <<locked>> | 86% | 56,391 psi | 90% | 2877 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 52,620 psi | 84% | 2936 fps | 97.8% |
| Bofors RP7 | <<locked>> | 90% | 55,709 psi | 89% | 2858 fps | 98.8% |
| Hodgdon H380 | <<locked>> | 84% | 53,200 psi | 85% | 2838 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 90% | 53,809 psi | 86% | 2904 fps | 99% |
| Hodgdon H4350 | <<locked>> | 88% | 53,838 psi | 86% | 2867 fps | 98.1% |
| Hodgdon H4831 | <<locked>> | 98% | 53,983 psi | 87% | 2884 fps | 95.8% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 56,318 psi | 90% | 2887 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 54,418 psi | 87% | 2874 fps | 100% |
| Hodgdon Superformance | <<locked>> | 90% | 53,896 psi | 86% | 2940 fps | 98.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,274 psi | 58% | 1778 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 55,056 psi | 88% | 2838 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 54,230 psi | 87% | 2818 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 82% | 53,374 psi | 86% | 2799 fps | 98.9% |
| IMR 4350 | <<locked>> | 92% | 53,243 psi | 85% | 2838 fps | 98.5% |
| IMR 4451 Enduron | <<locked>> | 88% | 53,969 psi | 87% | 2835 fps | 98.9% |
| IMR 4831 | <<locked>> | 94% | 55,753 psi | 89% | 2900 fps | 100% |
| IMR 4895 | <<locked>> | 82% | 53,621 psi | 86% | 2854 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 98% | 55,709 psi | 89% | 2877 fps | 96.4% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 51,416 psi | 82% | 2910 fps | 96% |
| Lovex S060 | <<locked>> | 82% | 55,753 psi | 89% | 2802 fps | 100% |
| Lovex S062 | <<locked>> | 84% | 54,404 psi | 87% | 2812 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 54,056 psi | 87% | 2831 fps | 99.6% |
| Lovex S070 | <<locked>> | 92% | 55,201 psi | 89% | 2871 fps | 99.3% |
| Lovex S071ᴾ | <<locked>> | 100% | 44,005 psi | 71% | 2703 fps | 98.1% |
| Norma 201 | <<locked>> | 82% | 55,883 psi | 90% | 2825 fps | 100% |
| Norma 203B | <<locked>> | 84% | 55,085 psi | 88% | 2867 fps | 100% |
| Norma 204 | <<locked>> | 92% | 53,751 psi | 86% | 2887 fps | 97.6% |
| Norma MRPᴾ | <<locked>> | 100% | 56,014 psi | 90% | 3025 fps | 99.3% |
| Norma URP | <<locked>> | 92% | 53,867 psi | 86% | 2890 fps | 100% |
| Ramshot Big Game | <<locked>> | 84% | 55,724 psi | 89% | 2890 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 51,634 psi | 83% | 2927 fps | 96.4% |
| Ramshot Hunter | <<locked>> | 94% | 56,304 psi | 90% | 2949 fps | 99.7% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 46,064 psi | 74% | 2802 fps | 97% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,985 psi | 59% | 1821 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 53,127 psi | 85% | 2822 fps | 99.2% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 53,113 psi | 85% | 2930 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 54,955 psi | 88% | 2930 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 53,621 psi | 86% | 2959 fps | 99.9% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 42,192 psi | 68% | 2805 fps | 96.7% |
| Rottweil R 902 | <<locked>> | 84% | 56,420 psi | 90% | 2825 fps | 100% |
| Rottweil R 903 | <<locked>> | 86% | 53,040 psi | 85% | 2822 fps | 100% |
| Rottweil R 904 | <<locked>> | 96% | 54,491 psi | 87% | 2864 fps | 96.8% |
| Rottweil R 905 | <<locked>> | 98% | 54,781 psi | 88% | 2927 fps | 98.1% |
| Rottweil R 907 | <<locked>> | 90% | 55,709 psi | 89% | 2858 fps | 98.8% |
| Shooters World Long Rifle | <<locked>> | 90% | 54,056 psi | 87% | 2831 fps | 99.6% |
| Shooters World Precision | <<locked>> | 84% | 54,404 psi | 87% | 2812 fps | 100% |
| Shooters World SW4350 | <<locked>> | 92% | 55,201 psi | 89% | 2871 fps | 99.3% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 54,520 psi | 87% | 2881 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 55,579 psi | 89% | 2854 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 54,186 psi | 87% | 2710 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 53,780 psi | 86% | 2785 fps | 98.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 54,302 psi | 87% | 2920 fps | 98% |
| Somchem S335 | <<locked>> | 82% | 56,376 psi | 90% | 2753 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 56,376 psi | 90% | 2867 fps | 100% |
| Somchem S361 | <<locked>> | 96% | 56,289 psi | 90% | 2861 fps | 96.3% |
| Somchem S365 | <<locked>> | 94% | 53,055 psi | 85% | 2897 fps | 100% |
| Somchem S385 | <<locked>> | 98% | 55,477 psi | 89% | 2900 fps | 98.8% |
| Vihtavuori N135 | <<locked>> | 82% | 53,330 psi | 86% | 2736 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 53,606 psi | 86% | 2753 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 54,273 psi | 87% | 2792 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 56,231 psi | 90% | 2890 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 51,010 psi | 82% | 2815 fps | 97.8% |
| Vihtavuori N540 | <<locked>> | 84% | 55,216 psi | 89% | 2795 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 55,187 psi | 88% | 2894 fps | 100% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 55,637 psi | 89% | 2953 fps | 100% |
| Vihtavuori N560ᴾ | <<locked>> | 100% | 56,376 psi | 90% | 3012 fps | 96.8% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 55,724 psi | 89% | 2854 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 54,056 psi | 87% | 2910 fps | 99.1% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 44,889 psi | 72% | 2930 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 82% | 55,782 psi | 89% | 2861 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 55,622 psi | 89% | 2894 fps | 98% |
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% | 50,821 psi | 81% | 2700 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 48,660 psi | 78% | 2703 fps | 97.5% |
| Accurate 3100 | <<locked>> | 88% | 35,259 psi | 57% | 2523 fps | 95.7% |
| Accurate 4064 | <<locked>> | 80% | 48,109 psi | 77% | 2707 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 36,622 psi | 59% | 2569 fps | 97.8% |
| ADI AR 2208 | <<locked>> | 80% | 45,556 psi | 73% | 2680 fps | 99.7% |
| ADI AR 2209 | <<locked>> | 90% | 43,410 psi | 70% | 2720 fps | 95.2% |
| ADI AR 2213 | <<locked>> | 98% | 50,473 psi | 81% | 2881 fps | 95.6% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 50,256 psi | 81% | 2894 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 46,079 psi | 74% | 2707 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 49,139 psi | 79% | 2776 fps | 99.9% |
| Alliant Reloder-16 | <<locked>> | 80% | 35,824 psi | 57% | 2579 fps | 97.9% |
| Alliant Reloder-17 | <<locked>> | 80% | 40,451 psi | 65% | 2703 fps | 99.8% |
| Alliant Reloder-19 | <<locked>> | 90% | 42,917 psi | 69% | 2710 fps | 95.2% |
| Alliant Reloder-22 | <<locked>> | 94% | 43,221 psi | 69% | 2762 fps | 95.5% |
| Alliant Reloder-23 | <<locked>> | 80% | 26,194 psi | 42% | 2329 fps | 95.2% |
| Alliant Reloder-25 | <<locked>> | 92% | 33,663 psi | 54% | 2559 fps | 95.4% |
| Alliant Reloder-26 | 65.2 gr | 84% | 31,966 psi | 51% | 2559 fps | 95.7% |
| Bofors RP15 | <<locked>> | 96% | 42,453 psi | 68% | 2743 fps | 95% |
| Bofors RP3 | <<locked>> | 80% | 46,224 psi | 74% | 2717 fps | 100% |
| Bofors RP5 | <<locked>> | 94% | 43,221 psi | 69% | 2762 fps | 95.5% |
| Bofors RP7 | <<locked>> | 80% | 40,770 psi | 65% | 2585 fps | 95.7% |
| Hodgdon H380 | <<locked>> | 80% | 46,746 psi | 75% | 2730 fps | 99.3% |
| Hodgdon H414 | <<locked>> | 80% | 38,566 psi | 62% | 2615 fps | 95.7% |
| Hodgdon H4350 | <<locked>> | 80% | 41,524 psi | 67% | 2635 fps | 95.1% |
| Hodgdon H4831 | <<locked>> | 96% | 50,604 psi | 81% | 2828 fps | 95% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 33,315 psi | 53% | 2474 fps | 98.5% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 50,894 psi | 82% | 2822 fps | 100% |
| Hodgdon Superformance | 65.7 gr | 82% | 40,335 psi | 65% | 2684 fps | 95.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,209 psi | 44% | 1591 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 51,808 psi | 83% | 2789 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 47,921 psi | 77% | 2717 fps | 99.9% |
| IMR 4166 Enduron | <<locked>> | 80% | 50,227 psi | 81% | 2746 fps | 98.4% |
| IMR 4350 | <<locked>> | 82% | 38,856 psi | 62% | 2566 fps | 95.1% |
| IMR 4451 Enduron | <<locked>> | 80% | 42,192 psi | 68% | 2618 fps | 96.6% |
| IMR 4831 | <<locked>> | 80% | 35,244 psi | 57% | 2523 fps | 97.5% |
| IMR 4895 | <<locked>> | 80% | 50,386 psi | 81% | 2802 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 52,402 psi | 84% | 2822 fps | 95.7% |
| IMR 7828 SSC | <<locked>> | 98% | 47,979 psi | 77% | 2848 fps | 95.1% |
| Lovex S060 | <<locked>> | 80% | 52,475 psi | 84% | 2753 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 48,066 psi | 77% | 2713 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 39,668 psi | 64% | 2566 fps | 97.4% |
| Lovex S070 | <<locked>> | 80% | 38,014 psi | 61% | 2549 fps | 95.7% |
| Lovex S071 | <<locked>> | 92% | 34,127 psi | 55% | 2493 fps | 95.2% |
| Norma 201 | <<locked>> | 80% | 52,315 psi | 84% | 2772 fps | 100% |
| Norma 203B | <<locked>> | 80% | 48,486 psi | 78% | 2762 fps | 100% |
| Norma 204 | <<locked>> | 86% | 44,019 psi | 71% | 2713 fps | 95.3% |
| Norma MRP | <<locked>> | 90% | 39,537 psi | 63% | 2713 fps | 95.8% |
| Norma URP | <<locked>> | 80% | 36,535 psi | 59% | 2566 fps | 97.7% |
| Ramshot Big Game | <<locked>> | 80% | 48,834 psi | 78% | 2782 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 48,109 psi | 77% | 2861 fps | 95.5% |
| Ramshot Hunter | <<locked>> | 80% | 35,389 psi | 57% | 2549 fps | 95.5% |
| Ramshot Magnum | <<locked>> | 98% | 42,699 psi | 68% | 2733 fps | 96% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,731 psi | 44% | 1631 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 46,659 psi | 75% | 2710 fps | 98.3% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 42,989 psi | 69% | 2759 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 36,419 psi | 58% | 2589 fps | 97.5% |
| ReloadSwiss RS 70 | 61.6 gr | 80% | 35,447 psi | 57% | 2592 fps | 96.7% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 39,450 psi | 63% | 2740 fps | 95.6% |
| Rottweil R 902 | <<locked>> | 80% | 49,893 psi | 80% | 2723 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 43,642 psi | 70% | 2664 fps | 99.9% |
| Rottweil R 904 | <<locked>> | 92% | 47,863 psi | 77% | 2753 fps | 95.2% |
| Rottweil R 905 | <<locked>> | 90% | 41,887 psi | 67% | 2694 fps | 95.1% |
| Rottweil R 907 | <<locked>> | 80% | 40,770 psi | 65% | 2585 fps | 95.7% |
| Shooters World Long Rifle | <<locked>> | 80% | 39,668 psi | 64% | 2566 fps | 97.4% |
| Shooters World Precision | <<locked>> | 80% | 48,066 psi | 77% | 2713 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 38,014 psi | 61% | 2549 fps | 95.7% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 44,672 psi | 72% | 2717 fps | 99.8% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 52,083 psi | 84% | 2802 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 45,049 psi | 72% | 2575 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 38,841 psi | 62% | 2513 fps | 95.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 44,512 psi | 71% | 2746 fps | 95.9% |
| Somchem S335 | <<locked>> | 80% | 52,866 psi | 85% | 2703 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 43,830 psi | 70% | 2661 fps | 99.9% |
| Somchem S361 | <<locked>> | 94% | 52,533 psi | 84% | 2802 fps | 95.5% |
| Somchem S365 | <<locked>> | 80% | 32,982 psi | 53% | 2523 fps | 99.4% |
| Somchem S385 | <<locked>> | 88% | 40,001 psi | 64% | 2621 fps | 95.4% |
| Vihtavuori N135 | <<locked>> | 80% | 50,227 psi | 81% | 2690 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 50,401 psi | 81% | 2707 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 41,959 psi | 67% | 2595 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 37,869 psi | 61% | 2566 fps | 98% |
| Vihtavuori N165 | <<locked>> | 94% | 41,872 psi | 67% | 2651 fps | 95.6% |
| Vihtavuori N540 | <<locked>> | 80% | 48,733 psi | 78% | 2700 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 37,434 psi | 60% | 2566 fps | 97.7% |
| Vihtavuori N555 | <<locked>> | 80% | 28,776 psi | 46% | 2408 fps | 95.5% |
| Vihtavuori N560 | <<locked>> | 96% | 49,255 psi | 79% | 2890 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 37,072 psi | 59% | 2536 fps | 99.5% |
| Winchester 760 | <<locked>> | 80% | 38,754 psi | 62% | 2618 fps | 95.7% |
| Winchester StaBALL HD | <<locked>> | 84% | 26,397 psi | 42% | 2415 fps | 96.1% |
| Winchester StaBALL Match | <<locked>> | 80% | 51,996 psi | 83% | 2805 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 45,194 psi | 72% | 2720 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 99 powders for .300 Win. Mag. loaded with the .308 | 175gr | Prvi Partizan FMJ BT. Norma MRP delivers the highest muzzle velocity at 3,025 fps; across all powders the maximum-charge window runs from 1,778 fps to 3,025 fps. Accurate 3100 gives the best case fill at 100 %, and 99 of the 99 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 175.0 gr projectile in 0.308" calls for a 1:12.0 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 | 175gr | Prvi Partizan FMJ BT they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, ADI AR 2225, Baschieri & Pellagri 109, Bofors RP30 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.