Load Specifications
Load data in caliber .300 Win. Mag. with .308 | 200gr | Barnes TSX FB bullet and 90 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-26, Norma MRP and Vihtavuori N560.
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% | 55,753 psi | 89% | 2585 fps | 100% |
| Accurate 2700 | <<locked>> | 82% | 53,722 psi | 86% | 2615 fps | 99.2% |
| Accurate 3100ᴾ | <<locked>> | 100% | 55,100 psi | 88% | 2710 fps | 100% |
| Accurate 4064 | <<locked>> | 84% | 56,159 psi | 90% | 2638 fps | 100% |
| Accurate 4350 | <<locked>> | 90% | 53,606 psi | 86% | 2703 fps | 100% |
| Accurate MAGPRO | <<locked>> | 98% | 53,693 psi | 86% | 2799 fps | 96.9% |
| ADI AR 2208 | <<locked>> | 84% | 53,272 psi | 85% | 2631 fps | 100% |
| ADI AR 2209 | <<locked>> | 96% | 54,839 psi | 88% | 2753 fps | 98.9% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 56,188 psi | 90% | 2805 fps | 98.2% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 56,289 psi | 90% | 2799 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 53,853 psi | 86% | 2651 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 54,085 psi | 87% | 2671 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 92% | 54,911 psi | 88% | 2762 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 88% | 56,014 psi | 90% | 2779 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 96% | 54,288 psi | 87% | 2743 fps | 98.9% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 55,172 psi | 88% | 2802 fps | 99.1% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 52,025 psi | 83% | 2723 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 45,194 psi | 72% | 2667 fps | 99.8% |
| Alliant Reloder-26 | <<locked>> | 98% | 55,999 psi | 90% | 2864 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 50,502 psi | 81% | 2726 fps | 98.3% |
| Bofors RP3 | <<locked>> | 84% | 54,534 psi | 87% | 2664 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 55,172 psi | 88% | 2802 fps | 99.1% |
| Bofors RP7 | <<locked>> | 88% | 54,012 psi | 87% | 2657 fps | 99.3% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 44,773 psi | 72% | 2608 fps | 96.5% |
| Hodgdon H380 | <<locked>> | 84% | 55,129 psi | 88% | 2687 fps | 100% |
| Hodgdon H414 | <<locked>> | 90% | 56,173 psi | 90% | 2759 fps | 99.8% |
| Hodgdon H4350 | <<locked>> | 88% | 55,738 psi | 89% | 2720 fps | 99.2% |
| Hodgdon H4831 | <<locked>> | 98% | 56,246 psi | 90% | 2749 fps | 97.6% |
| Hodgdon H4831 SC | <<locked>> | 98% | 55,129 psi | 88% | 2733 fps | 97.4% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 55,071 psi | 88% | 2687 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 56,391 psi | 90% | 2713 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 44,164 psi | 71% | 2700 fps | 97.9% |
| Hodgdon Superformance | <<locked>> | 88% | 52,446 psi | 84% | 2740 fps | 99.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,535 psi | 59% | 1654 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 56,101 psi | 90% | 2661 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 82% | 55,187 psi | 88% | 2648 fps | 99.7% |
| IMR 4350 | <<locked>> | 92% | 55,274 psi | 89% | 2694 fps | 99.5% |
| IMR 4451 Enduron | <<locked>> | 88% | 55,753 psi | 89% | 2684 fps | 99.7% |
| IMR 4831 | <<locked>> | 92% | 54,230 psi | 87% | 2697 fps | 100% |
| IMR 4895 | <<locked>> | 82% | 55,506 psi | 89% | 2697 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 54,230 psi | 87% | 2684 fps | 97.4% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 53,432 psi | 86% | 2776 fps | 97.8% |
| Lovex S062 | <<locked>> | 84% | 56,115 psi | 90% | 2651 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 55,840 psi | 90% | 2680 fps | 100% |
| Lovex S070 | <<locked>> | 90% | 53,795 psi | 86% | 2674 fps | 99.7% |
| Lovex S071ᴾ | <<locked>> | 100% | 45,745 psi | 73% | 2572 fps | 99.3% |
| Norma 203B | <<locked>> | 82% | 53,388 psi | 86% | 2657 fps | 100% |
| Norma 204 | <<locked>> | 92% | 56,043 psi | 90% | 2746 fps | 98.9% |
| Norma MRP | <<locked>> | 98% | 54,752 psi | 88% | 2825 fps | 99.8% |
| Norma URP | <<locked>> | 92% | 56,115 psi | 90% | 2740 fps | 100% |
| Ramshot Big Game | <<locked>> | 82% | 54,201 psi | 87% | 2684 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 53,838 psi | 86% | 2795 fps | 98.2% |
| Ramshot Hunter | <<locked>> | 92% | 54,998 psi | 88% | 2746 fps | 99.9% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 48,095 psi | 77% | 2677 fps | 98.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,101 psi | 59% | 1690 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 54,926 psi | 88% | 2671 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 55,593 psi | 89% | 2769 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 53,635 psi | 86% | 2726 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 56,115 psi | 90% | 2812 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 44,019 psi | 71% | 2697 fps | 98.8% |
| Rottweil R 902 | <<locked>> | 82% | 54,665 psi | 88% | 2615 fps | 100% |
| Rottweil R 903 | <<locked>> | 86% | 54,679 psi | 88% | 2661 fps | 100% |
| Rottweil R 904 | <<locked>> | 96% | 56,420 psi | 90% | 2723 fps | 98.2% |
| Rottweil R 905 | <<locked>> | 96% | 53,505 psi | 86% | 2730 fps | 98.9% |
| Rottweil R 907 | <<locked>> | 88% | 54,012 psi | 87% | 2657 fps | 99.3% |
| Shooters World Long Rifle | <<locked>> | 90% | 55,840 psi | 90% | 2680 fps | 100% |
| Shooters World Precision | <<locked>> | 84% | 56,115 psi | 90% | 2651 fps | 100% |
| Shooters World SW4350 | <<locked>> | 90% | 53,795 psi | 86% | 2674 fps | 99.7% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 52,939 psi | 85% | 2671 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 55,695 psi | 89% | 2549 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 55,506 psi | 89% | 2638 fps | 99.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 53,040 psi | 85% | 2726 fps | 98.8% |
| Somchem S355 | <<locked>> | 86% | 54,781 psi | 88% | 2657 fps | 100% |
| Somchem S361 | <<locked>> | 94% | 54,462 psi | 87% | 2667 fps | 97.2% |
| Somchem S365 | <<locked>> | 94% | 55,564 psi | 89% | 2740 fps | 100% |
| Somchem S385 | <<locked>> | 96% | 53,940 psi | 86% | 2703 fps | 99.4% |
| Vihtavuori N135 | <<locked>> | 82% | 55,056 psi | 88% | 2569 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 55,376 psi | 89% | 2592 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 56,086 psi | 90% | 2635 fps | 100% |
| Vihtavuori N160 | <<locked>> | 90% | 54,607 psi | 88% | 2684 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 53,200 psi | 85% | 2680 fps | 99.1% |
| Vihtavuori N540 | <<locked>> | 82% | 53,374 psi | 86% | 2585 fps | 100% |
| Vihtavuori N550 | <<locked>> | 90% | 53,766 psi | 86% | 2690 fps | 100% |
| Vihtavuori N555 | <<locked>> | 98% | 54,404 psi | 87% | 2749 fps | 100% |
| Vihtavuori N560 | <<locked>> | 98% | 55,013 psi | 88% | 2818 fps | 97.8% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 46,717 psi | 75% | 2671 fps | 96.2% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 54,302 psi | 87% | 2654 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 56,173 psi | 90% | 2759 fps | 99.8% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 47,413 psi | 76% | 2792 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 54,099 psi | 87% | 2700 fps | 98.7% |
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% | 52,083 psi | 84% | 2539 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 50,111 psi | 80% | 2562 fps | 98.7% |
| Accurate 3100 | <<locked>> | 84% | 31,734 psi | 51% | 2293 fps | 95.8% |
| Accurate 4064 | <<locked>> | 80% | 49,429 psi | 79% | 2546 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 37,840 psi | 61% | 2438 fps | 99.1% |
| Accurate MAGPRO | <<locked>> | 94% | 46,572 psi | 75% | 2677 fps | 95.1% |
| ADI AR 2208 | <<locked>> | 80% | 46,963 psi | 75% | 2533 fps | 100% |
| ADI AR 2209 | <<locked>> | 86% | 39,523 psi | 63% | 2480 fps | 95.5% |
| ADI AR 2213 | <<locked>> | 92% | 42,844 psi | 69% | 2572 fps | 95% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 52,286 psi | 84% | 2743 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 47,456 psi | 76% | 2556 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 50,676 psi | 81% | 2621 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 37,086 psi | 59% | 2451 fps | 99.2% |
| Alliant Reloder-17 | <<locked>> | 80% | 42,076 psi | 67% | 2566 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 86% | 39,189 psi | 63% | 2474 fps | 95.5% |
| Alliant Reloder-22 | <<locked>> | 90% | 39,262 psi | 63% | 2520 fps | 95.7% |
| Alliant Reloder-23 | <<locked>> | 80% | 26,890 psi | 43% | 2218 fps | 97.4% |
| Alliant Reloder-25 | <<locked>> | 88% | 30,574 psi | 49% | 2336 fps | 95.8% |
| Alliant Reloder-26 | 59.4 gr | 80% | 28,747 psi | 46% | 2323 fps | 95.8% |
| Bofors RP15 | <<locked>> | 92% | 38,740 psi | 62% | 2507 fps | 95.4% |
| Bofors RP3 | <<locked>> | 80% | 47,688 psi | 76% | 2566 fps | 100% |
| Bofors RP5 | <<locked>> | 90% | 39,262 psi | 63% | 2520 fps | 95.7% |
| Bofors RP7 | <<locked>> | 80% | 41,959 psi | 67% | 2454 fps | 97.4% |
| Hodgdon H1000 | <<locked>> | 98% | 41,814 psi | 67% | 2549 fps | 95.5% |
| Hodgdon H380 | <<locked>> | 80% | 48,080 psi | 77% | 2579 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 80% | 40,089 psi | 64% | 2487 fps | 97.5% |
| Hodgdon H4350 | <<locked>> | 80% | 42,960 psi | 69% | 2503 fps | 96.9% |
| Hodgdon H4831 | <<locked>> | 92% | 45,832 psi | 73% | 2582 fps | 95.3% |
| Hodgdon H4831 SC | <<locked>> | 92% | 44,962 psi | 72% | 2566 fps | 95% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 34,505 psi | 55% | 2346 fps | 99.5% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 52,837 psi | 85% | 2664 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 96% | 38,682 psi | 62% | 2579 fps | 96% |
| Hodgdon Superformance | <<locked>> | 80% | 38,856 psi | 62% | 2497 fps | 96.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,195 psi | 44% | 1473 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 49,414 psi | 79% | 2566 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 80% | 51,750 psi | 83% | 2598 fps | 99.4% |
| IMR 4350 | <<locked>> | 80% | 37,623 psi | 60% | 2385 fps | 96.2% |
| IMR 4451 Enduron | <<locked>> | 80% | 43,584 psi | 70% | 2484 fps | 98.1% |
| IMR 4831 | <<locked>> | 80% | 36,535 psi | 59% | 2395 fps | 98.9% |
| IMR 4895 | <<locked>> | 80% | 52,025 psi | 83% | 2644 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 90% | 44,933 psi | 72% | 2530 fps | 95.2% |
| IMR 7828 SSC | <<locked>> | 94% | 43,758 psi | 70% | 2605 fps | 95.4% |
| Lovex S062 | <<locked>> | 80% | 49,530 psi | 79% | 2556 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 40,799 psi | 65% | 2431 fps | 98.7% |
| Lovex S070 | <<locked>> | 80% | 39,015 psi | 63% | 2415 fps | 97.4% |
| Lovex S071 | <<locked>> | 88% | 30,937 psi | 50% | 2274 fps | 95.5% |
| Norma 203B | <<locked>> | 80% | 50,024 psi | 80% | 2608 fps | 100% |
| Norma 204 | <<locked>> | 82% | 39,842 psi | 64% | 2467 fps | 95.5% |
| Norma MRP | 60.5 gr | 84% | 33,402 psi | 54% | 2415 fps | 95% |
| Norma URP | <<locked>> | 80% | 37,753 psi | 61% | 2434 fps | 99% |
| Ramshot Big Game | <<locked>> | 80% | 50,531 psi | 81% | 2631 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 43,526 psi | 70% | 2615 fps | 95.8% |
| Ramshot Hunter | <<locked>> | 80% | 36,593 psi | 59% | 2421 fps | 97.3% |
| Ramshot Magnum | <<locked>> | 92% | 35,694 psi | 57% | 2434 fps | 95.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,760 psi | 45% | 1509 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 48,283 psi | 77% | 2569 fps | 99.3% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 44,744 psi | 72% | 2612 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 37,811 psi | 61% | 2457 fps | 98.9% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 36,564 psi | 59% | 2467 fps | 98.4% |
| ReloadSwiss RS 76 | <<locked>> | 94% | 35,462 psi | 57% | 2500 fps | 95.8% |
| Rottweil R 902 | <<locked>> | 80% | 51,474 psi | 83% | 2569 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 44,860 psi | 72% | 2516 fps | 100% |
| Rottweil R 904 | <<locked>> | 88% | 43,714 psi | 70% | 2513 fps | 95.5% |
| Rottweil R 905 | <<locked>> | 86% | 38,116 psi | 61% | 2454 fps | 95.4% |
| Rottweil R 907 | <<locked>> | 80% | 41,959 psi | 67% | 2454 fps | 97.4% |
| Shooters World Long Rifle | <<locked>> | 80% | 40,799 psi | 65% | 2431 fps | 98.7% |
| Shooters World Precision | <<locked>> | 80% | 49,530 psi | 79% | 2556 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 39,015 psi | 63% | 2415 fps | 97.4% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 46,224 psi | 74% | 2569 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 46,267 psi | 74% | 2421 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 40,059 psi | 64% | 2382 fps | 97.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 86% | 37,768 psi | 61% | 2451 fps | 95.2% |
| Somchem S355 | <<locked>> | 80% | 45,194 psi | 72% | 2513 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 47,732 psi | 77% | 2559 fps | 95.7% |
| Somchem S365 | <<locked>> | 80% | 34,200 psi | 55% | 2392 fps | 100% |
| Somchem S385 | <<locked>> | 84% | 36,158 psi | 58% | 2385 fps | 95.6% |
| Vihtavuori N135 | <<locked>> | 80% | 51,735 psi | 83% | 2530 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 51,895 psi | 83% | 2543 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 43,192 psi | 69% | 2448 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 39,189 psi | 63% | 2431 fps | 99.2% |
| Vihtavuori N165 | <<locked>> | 88% | 35,766 psi | 57% | 2372 fps | 95% |
| Vihtavuori N540 | <<locked>> | 80% | 50,067 psi | 80% | 2543 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 38,551 psi | 62% | 2434 fps | 98.9% |
| Vihtavuori N555 | <<locked>> | 80% | 29,849 psi | 48% | 2290 fps | 97.4% |
| Vihtavuori N560 | 66.3 gr | 92% | 44,788 psi | 72% | 2641 fps | 95.3% |
| Vihtavuori N565 | <<locked>> | 98% | 43,613 psi | 70% | 2615 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 38,247 psi | 61% | 2402 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 40,089 psi | 64% | 2487 fps | 97.5% |
| Winchester StaBALL HD | <<locked>> | 80% | 23,612 psi | 38% | 2188 fps | 96.1% |
| Winchester Supreme 780 | <<locked>> | 88% | 37,971 psi | 61% | 2421 fps | 95% |
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 97 powders for .300 Win. Mag. loaded with the .308 | 200gr | Barnes TSX FB. Alliant Reloder-26 delivers the highest muzzle velocity at 2,864 fps; across all powders the maximum-charge window runs from 1,654 fps to 2,864 fps. Accurate 3100 gives the best case fill at 100 %, and 97 of the 97 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (430 MPa), the top charges use 50–90 %, leaving at least 10 % headroom. The 200.0 gr projectile in 0.308" calls for a 1:11.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, ADI AR 2213, ADI AR 2217 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. Alliant Reloder-26, Norma MRP, Vihtavuori N560 rank at the top here: for .300 Win. Mag. with the .308 | 200gr | Barnes TSX FB they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, ADI AR 2217, Baschieri & Pellagri 109, Norma 217 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.