Load Specifications
Load data in caliber .300 Win. Mag. with .308 | 201gr | RWS UNI Classic bullet and 80 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Vihtavuori N560, Norma MRP and ADI AR 2213.
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.
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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 2700 | <<locked>> | 84% | 55,463 psi | 89% | 2648 fps | 99.6% |
| Accurate 3100 | <<locked>> | 96% | 53,737 psi | 86% | 2700 fps | 100% |
| Accurate 4350 | <<locked>> | 88% | 55,448 psi | 89% | 2733 fps | 100% |
| Accurate MAGPRO | <<locked>> | 98% | 56,362 psi | 90% | 2841 fps | 97.2% |
| ADI AR 2208 | <<locked>> | 82% | 53,722 psi | 86% | 2644 fps | 100% |
| ADI AR 2209 | <<locked>> | 94% | 56,072 psi | 90% | 2782 fps | 99.3% |
| ADI AR 2213 | <<locked>> | 96% | 53,693 psi | 86% | 2782 fps | 98.2% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 44,889 psi | 72% | 2621 fps | 96.5% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 39,784 psi | 64% | 2582 fps | 98.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 54,868 psi | 88% | 2667 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 90% | 56,101 psi | 90% | 2782 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 84% | 53,693 psi | 86% | 2749 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 94% | 55,637 psi | 89% | 2772 fps | 99.3% |
| Alliant Reloder-22 | <<locked>> | 96% | 53,345 psi | 86% | 2782 fps | 99.2% |
| Alliant Reloder-23 | <<locked>> | 98% | 54,404 psi | 87% | 2759 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 50,082 psi | 80% | 2759 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 94% | 54,505 psi | 87% | 2844 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 55,898 psi | 90% | 2818 fps | 99.4% |
| Bofors RP3 | <<locked>> | 82% | 55,709 psi | 89% | 2684 fps | 100% |
| Bofors RP30ᴾ | <<locked>> | 100% | 46,021 psi | 74% | 2690 fps | 97.4% |
| Bofors RP5 | <<locked>> | 96% | 53,345 psi | 86% | 2782 fps | 99.2% |
| Bofors RP7 | <<locked>> | 86% | 55,027 psi | 88% | 2684 fps | 99.6% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 46,137 psi | 74% | 2648 fps | 97.5% |
| Hodgdon H380 | <<locked>> | 82% | 55,927 psi | 90% | 2703 fps | 100% |
| Hodgdon H414 | <<locked>> | 84% | 54,694 psi | 88% | 2746 fps | 99.9% |
| Hodgdon H4350 | <<locked>> | 88% | 55,158 psi | 88% | 2720 fps | 99.4% |
| Hodgdon H4831 | <<locked>> | 98% | 53,156 psi | 85% | 2717 fps | 97.5% |
| Hodgdon H4831 SC | <<locked>> | 96% | 56,362 psi | 90% | 2762 fps | 98% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 53,011 psi | 85% | 2661 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 49,110 psi | 79% | 2812 fps | 99.3% |
| Hodgdon Superformance | <<locked>> | 86% | 53,737 psi | 86% | 2766 fps | 99.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,883 psi | 59% | 1677 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 56,086 psi | 90% | 2667 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 84% | 54,665 psi | 88% | 2654 fps | 99.8% |
| IMR 4350 | <<locked>> | 90% | 56,144 psi | 90% | 2720 fps | 99.7% |
| IMR 4451 Enduron | <<locked>> | 84% | 53,011 psi | 85% | 2654 fps | 99.7% |
| IMR 4831 | <<locked>> | 92% | 53,534 psi | 86% | 2694 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 55,187 psi | 88% | 2713 fps | 98% |
| IMR 7828 SSC | <<locked>> | 96% | 55,477 psi | 89% | 2822 fps | 98.6% |
| Lovex S065 | <<locked>> | 86% | 53,592 psi | 86% | 2657 fps | 100% |
| Lovex S070 | <<locked>> | 88% | 54,911 psi | 88% | 2700 fps | 99.9% |
| Lovex S071ᴾ | <<locked>> | 100% | 51,068 psi | 82% | 2661 fps | 99.9% |
| Norma 204 | <<locked>> | 88% | 53,417 psi | 86% | 2717 fps | 98.9% |
| Norma MRP | <<locked>> | 94% | 53,026 psi | 85% | 2802 fps | 99.8% |
| Norma URP | <<locked>> | 88% | 54,012 psi | 87% | 2717 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 55,071 psi | 88% | 2828 fps | 98.8% |
| Ramshot Hunter | <<locked>> | 90% | 56,304 psi | 90% | 2772 fps | 100% |
| Ramshot Magnum | <<locked>> | 98% | 55,927 psi | 90% | 2805 fps | 99.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,710 psi | 60% | 1719 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 55,593 psi | 89% | 2690 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 53,026 psi | 85% | 2736 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 55,347 psi | 89% | 2756 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 53,519 psi | 86% | 2782 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 49,313 psi | 79% | 2812 fps | 99.8% |
| Rottweil R 903 | <<locked>> | 84% | 56,086 psi | 90% | 2684 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 54,128 psi | 87% | 2700 fps | 98.3% |
| Rottweil R 905 | <<locked>> | 94% | 55,071 psi | 88% | 2762 fps | 99.3% |
| Rottweil R 907 | <<locked>> | 86% | 55,027 psi | 88% | 2684 fps | 99.6% |
| Shooters World Long Rifle | <<locked>> | 86% | 53,592 psi | 86% | 2657 fps | 100% |
| Shooters World SW4350 | <<locked>> | 88% | 54,911 psi | 88% | 2700 fps | 99.9% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 53,998 psi | 87% | 2694 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 56,246 psi | 90% | 2562 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 56,159 psi | 90% | 2661 fps | 99.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 54,650 psi | 88% | 2759 fps | 99.3% |
| Somchem S355 | <<locked>> | 84% | 55,738 psi | 89% | 2677 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 55,506 psi | 89% | 2697 fps | 97.9% |
| Somchem S365 | <<locked>> | 90% | 53,896 psi | 86% | 2720 fps | 100% |
| Somchem S385 | <<locked>> | 94% | 55,477 psi | 89% | 2736 fps | 99.7% |
| Unknown powder | <<locked>> | 86% | 54,288 psi | 87% | 2717 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 54,056 psi | 87% | 2615 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 54,607 psi | 88% | 2687 fps | 100% |
| Vihtavuori N165 | <<locked>> | 98% | 52,953 psi | 85% | 2687 fps | 99.3% |
| Vihtavuori N550 | <<locked>> | 86% | 55,172 psi | 88% | 2733 fps | 100% |
| Vihtavuori N555 | <<locked>> | 94% | 53,142 psi | 85% | 2733 fps | 100% |
| Vihtavuori N560 | <<locked>> | 96% | 53,621 psi | 86% | 2805 fps | 97.9% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 52,460 psi | 84% | 2772 fps | 97.9% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 55,332 psi | 89% | 2674 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 54,694 psi | 88% | 2746 fps | 99.9% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 54,723 psi | 88% | 2887 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 53,359 psi | 86% | 2700 fps | 99% |
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 2700 | <<locked>> | 80% | 48,834 psi | 78% | 2546 fps | 98.9% |
| Accurate 3100 | <<locked>> | 80% | 31,285 psi | 50% | 2280 fps | 96.1% |
| Accurate 4350 | <<locked>> | 80% | 42,235 psi | 68% | 2523 fps | 99.8% |
| Accurate MAGPRO | <<locked>> | 94% | 49,008 psi | 79% | 2723 fps | 95.6% |
| ADI AR 2208 | <<locked>> | 80% | 50,589 psi | 81% | 2598 fps | 100% |
| ADI AR 2209 | <<locked>> | 82% | 37,971 psi | 61% | 2454 fps | 95.5% |
| ADI AR 2213 | 65.2 gr | 88% | 41,205 psi | 66% | 2552 fps | 95.1% |
| ADI AR 2217 | <<locked>> | 98% | 41,945 psi | 67% | 2562 fps | 95.5% |
| ADI AR 2225 | <<locked>> | 94% | 32,938 psi | 53% | 2411 fps | 95.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 51,663 psi | 83% | 2621 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 40,669 psi | 65% | 2530 fps | 99.9% |
| Alliant Reloder-17 | <<locked>> | 80% | 46,630 psi | 75% | 2644 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 82% | 37,840 psi | 61% | 2451 fps | 95.6% |
| Alliant Reloder-22 | <<locked>> | 86% | 38,232 psi | 61% | 2503 fps | 95.9% |
| Alliant Reloder-23 | <<locked>> | 80% | 30,197 psi | 48% | 2310 fps | 99% |
| Alliant Reloder-25 | <<locked>> | 82% | 28,195 psi | 45% | 2270 fps | 95% |
| Alliant Reloder-26 | <<locked>> | 80% | 32,430 psi | 52% | 2425 fps | 97.9% |
| Bofors RP15 | <<locked>> | 88% | 37,898 psi | 61% | 2493 fps | 95.6% |
| Bofors RP3 | <<locked>> | 80% | 52,373 psi | 84% | 2638 fps | 100% |
| Bofors RP30 | <<locked>> | 96% | 40,335 psi | 65% | 2579 fps | 95.8% |
| Bofors RP5 | <<locked>> | 86% | 38,232 psi | 61% | 2503 fps | 95.9% |
| Bofors RP7 | <<locked>> | 80% | 45,469 psi | 73% | 2526 fps | 98.5% |
| Hodgdon H1000 | <<locked>> | 96% | 40,437 psi | 65% | 2536 fps | 95.7% |
| Hodgdon H380 | <<locked>> | 80% | 52,417 psi | 84% | 2654 fps | 100% |
| Hodgdon H414 | <<locked>> | 80% | 47,776 psi | 77% | 2635 fps | 99.3% |
| Hodgdon H4350 | <<locked>> | 80% | 43,091 psi | 69% | 2516 fps | 97.4% |
| Hodgdon H4831 | <<locked>> | 92% | 43,801 psi | 70% | 2556 fps | 95.3% |
| Hodgdon H4831 SC | <<locked>> | 88% | 43,221 psi | 69% | 2543 fps | 95.1% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 38,305 psi | 61% | 2425 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 90% | 35,447 psi | 57% | 2507 fps | 95.1% |
| Hodgdon Superformance | <<locked>> | 80% | 43,062 psi | 69% | 2589 fps | 98.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,688 psi | 44% | 1499 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 49,879 psi | 80% | 2579 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 80% | 48,515 psi | 78% | 2556 fps | 99.3% |
| IMR 4350 | <<locked>> | 80% | 41,075 psi | 66% | 2464 fps | 97.6% |
| IMR 4451 Enduron | <<locked>> | 80% | 46,847 psi | 75% | 2552 fps | 99% |
| IMR 4831 | <<locked>> | 80% | 36,651 psi | 59% | 2398 fps | 99.1% |
| IMR 4955 Enduron | <<locked>> | 86% | 43,120 psi | 69% | 2507 fps | 95.3% |
| IMR 7828 SSC | <<locked>> | 88% | 42,105 psi | 68% | 2582 fps | 95.5% |
| Lovex S065 | <<locked>> | 80% | 44,585 psi | 71% | 2510 fps | 99.5% |
| Lovex S070 | <<locked>> | 80% | 42,801 psi | 69% | 2497 fps | 98.6% |
| Lovex S071 | <<locked>> | 84% | 30,734 psi | 49% | 2264 fps | 95.8% |
| Norma 204 | <<locked>> | 80% | 40,712 psi | 65% | 2493 fps | 96.3% |
| Norma MRP | 61.2 gr | 80% | 32,605 psi | 52% | 2398 fps | 95.2% |
| Norma URP | <<locked>> | 80% | 41,727 psi | 67% | 2513 fps | 99.7% |
| Ramshot Grand | <<locked>> | 86% | 41,031 psi | 66% | 2575 fps | 95.6% |
| Ramshot Hunter | <<locked>> | 80% | 40,422 psi | 65% | 2507 fps | 98.6% |
| Ramshot Magnum | <<locked>> | 86% | 35,578 psi | 57% | 2438 fps | 95.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,123 psi | 45% | 1532 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 52,214 psi | 84% | 2641 fps | 99.8% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 49,443 psi | 79% | 2684 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 42,018 psi | 67% | 2539 fps | 99.7% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 40,538 psi | 65% | 2556 fps | 99.5% |
| ReloadSwiss RS 76 | <<locked>> | 90% | 34,679 psi | 56% | 2490 fps | 96.1% |
| Rottweil R 903 | <<locked>> | 80% | 49,327 psi | 79% | 2589 fps | 100% |
| Rottweil R 904 | <<locked>> | 84% | 41,989 psi | 67% | 2490 fps | 95.6% |
| Rottweil R 905 | <<locked>> | 82% | 36,956 psi | 59% | 2434 fps | 95.5% |
| Rottweil R 907 | <<locked>> | 80% | 45,469 psi | 73% | 2526 fps | 98.5% |
| Shooters World Long Rifle | <<locked>> | 80% | 44,585 psi | 71% | 2510 fps | 99.5% |
| Shooters World SW4350 | <<locked>> | 80% | 42,801 psi | 69% | 2497 fps | 98.6% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 50,401 psi | 81% | 2641 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 49,734 psi | 80% | 2477 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 43,598 psi | 70% | 2457 fps | 98.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 82% | 36,622 psi | 59% | 2428 fps | 95.3% |
| Somchem S355 | <<locked>> | 80% | 49,400 psi | 79% | 2585 fps | 100% |
| Somchem S361 | <<locked>> | 86% | 45,571 psi | 73% | 2533 fps | 95.7% |
| Somchem S365 | <<locked>> | 80% | 38,421 psi | 62% | 2474 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 35,317 psi | 57% | 2369 fps | 95.8% |
| Unknown powder | <<locked>> | 80% | 44,672 psi | 72% | 2562 fps | 99.8% |
| Vihtavuori N150 | <<locked>> | 80% | 42,380 psi | 68% | 2441 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 44,788 psi | 72% | 2536 fps | 99.9% |
| Vihtavuori N165 | <<locked>> | 86% | 35,897 psi | 58% | 2379 fps | 95.6% |
| Vihtavuori N550 | <<locked>> | 80% | 45,426 psi | 73% | 2579 fps | 99.9% |
| Vihtavuori N555 | <<locked>> | 80% | 33,750 psi | 54% | 2382 fps | 98.9% |
| Vihtavuori N560 | 67.4 gr | 90% | 43,874 psi | 70% | 2635 fps | 95.6% |
| Vihtavuori N565 | <<locked>> | 94% | 42,873 psi | 69% | 2602 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 42,047 psi | 67% | 2477 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 47,776 psi | 77% | 2635 fps | 99.3% |
| Winchester StaBALL HD | <<locked>> | 80% | 26,643 psi | 43% | 2310 fps | 98.8% |
| Winchester Supreme 780 | <<locked>> | 82% | 37,478 psi | 60% | 2418 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 85 powders for .300 Win. Mag. loaded with the .308 | 201gr | RWS UNI Classic. Winchester StaBALL HD delivers the highest muzzle velocity at 2,887 fps; across all powders the maximum-charge window runs from 1,677 fps to 2,887 fps. ADI AR 2217 gives the best case fill at 100 %, and 85 of the 85 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (430 MPa), the top charges use 57–90 %, leaving at least 10 % headroom. The 201.0 gr projectile in 0.308" calls for a 1:12.5 twist; slower twists will usually not stabilise this weight. ADI AR 2217, ADI AR 2225, Alliant Reloder-25 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. Vihtavuori N560, Norma MRP, ADI AR 2213 rank at the top here: for .300 Win. Mag. with the .308 | 201gr | RWS UNI Classic they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, IMR 8133 Enduron, Vihtavuori N568 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.