Load Specifications
Load data in caliber .300 Win. Mag. with .308 | 200gr | Barnes X S bullet and 75 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.
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Max Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 96% | 54,491 psi | 87% | 2680 fps | 99.9% |
| Accurate 4350 | <<locked>> | 88% | 56,144 psi | 90% | 2717 fps | 100% |
| Accurate MAGPRO | <<locked>> | 96% | 55,622 psi | 89% | 2812 fps | 97.3% |
| ADI AR 2208 | <<locked>> | 82% | 54,114 psi | 87% | 2625 fps | 100% |
| ADI AR 2209 | <<locked>> | 94% | 56,043 psi | 90% | 2756 fps | 99.1% |
| ADI AR 2213 | <<locked>> | 96% | 53,621 psi | 86% | 2753 fps | 97.8% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 45,295 psi | 73% | 2595 fps | 96% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 40,582 psi | 65% | 2569 fps | 98% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 55,347 psi | 89% | 2648 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 90% | 55,999 psi | 90% | 2759 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 84% | 53,650 psi | 86% | 2726 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 94% | 55,521 psi | 89% | 2743 fps | 99% |
| Alliant Reloder-22 | <<locked>> | 96% | 53,359 psi | 86% | 2756 fps | 98.9% |
| Alliant Reloder-23 | <<locked>> | 98% | 54,186 psi | 87% | 2736 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 50,154 psi | 80% | 2736 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 94% | 54,186 psi | 87% | 2822 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 55,695 psi | 89% | 2789 fps | 99.1% |
| Bofors RP30ᴾ | <<locked>> | 100% | 46,441 psi | 74% | 2674 fps | 97.1% |
| Bofors RP5 | <<locked>> | 96% | 53,359 psi | 86% | 2756 fps | 98.9% |
| Bofors RP7 | <<locked>> | 86% | 55,332 psi | 89% | 2657 fps | 99.5% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 49,661 psi | 80% | 2680 fps | 97.8% |
| Hodgdon H414 | <<locked>> | 86% | 53,911 psi | 86% | 2707 fps | 99.7% |
| Hodgdon H4350 | <<locked>> | 84% | 53,330 psi | 86% | 2664 fps | 98.9% |
| Hodgdon H4831 | <<locked>> | 94% | 53,708 psi | 86% | 2697 fps | 97.2% |
| Hodgdon H4831 SC | <<locked>> | 96% | 56,173 psi | 90% | 2733 fps | 97.6% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 53,345 psi | 86% | 2644 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 49,284 psi | 79% | 2785 fps | 99% |
| Hodgdon Superformance | <<locked>> | 86% | 53,490 psi | 86% | 2740 fps | 99.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,115 psi | 60% | 1657 fps | 100% |
| IMR 4350 | <<locked>> | 90% | 56,275 psi | 90% | 2694 fps | 99.6% |
| IMR 4451 Enduron | <<locked>> | 86% | 56,405 psi | 90% | 2677 fps | 99.7% |
| IMR 4831 | <<locked>> | 90% | 56,173 psi | 90% | 2703 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 55,361 psi | 89% | 2687 fps | 97.6% |
| IMR 7828 SSC | <<locked>> | 98% | 54,955 psi | 88% | 2785 fps | 98.1% |
| Lovex S065 | <<locked>> | 86% | 54,085 psi | 87% | 2635 fps | 100% |
| Lovex S070 | <<locked>> | 88% | 55,608 psi | 89% | 2680 fps | 99.8% |
| Lovex S071ᴾ | <<locked>> | 100% | 52,098 psi | 84% | 2648 fps | 99.8% |
| Norma 204 | <<locked>> | 88% | 53,432 psi | 86% | 2690 fps | 98.6% |
| Norma 217ᴾ | <<locked>> | 100% | 36,405 psi | 58% | 2503 fps | 95.9% |
| Norma MRP | <<locked>> | 94% | 52,837 psi | 85% | 2776 fps | 99.6% |
| Norma URP | <<locked>> | 88% | 54,389 psi | 87% | 2697 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 55,550 psi | 89% | 2805 fps | 98.5% |
| Ramshot Hunter | <<locked>> | 88% | 52,852 psi | 85% | 2697 fps | 99.9% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 53,490 psi | 86% | 2743 fps | 99.4% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,043 psi | 61% | 1699 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 56,159 psi | 90% | 2671 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 53,156 psi | 85% | 2720 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 55,738 psi | 89% | 2736 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 53,345 psi | 86% | 2756 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 49,487 psi | 79% | 2782 fps | 99.6% |
| Rottweil R 903 | <<locked>> | 82% | 53,505 psi | 86% | 2621 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 54,186 psi | 87% | 2674 fps | 97.9% |
| Rottweil R 905 | <<locked>> | 94% | 55,056 psi | 88% | 2733 fps | 99.1% |
| Rottweil R 907 | <<locked>> | 86% | 55,332 psi | 89% | 2657 fps | 99.5% |
| Shooters World Long Rifle | <<locked>> | 86% | 54,085 psi | 87% | 2635 fps | 100% |
| Shooters World SW4350 | <<locked>> | 88% | 55,608 psi | 89% | 2680 fps | 99.8% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 54,128 psi | 87% | 2671 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 53,505 psi | 86% | 2503 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 53,519 psi | 86% | 2589 fps | 99.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 54,636 psi | 88% | 2730 fps | 99% |
| Somchem S355 | <<locked>> | 82% | 53,200 psi | 85% | 2615 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 55,767 psi | 89% | 2671 fps | 97.5% |
| Somchem S365 | <<locked>> | 90% | 54,143 psi | 87% | 2700 fps | 100% |
| Somchem S385 | <<locked>> | 94% | 55,912 psi | 90% | 2713 fps | 99.5% |
| Vihtavuori N150 | <<locked>> | 84% | 54,085 psi | 87% | 2585 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 56,043 psi | 90% | 2684 fps | 100% |
| Vihtavuori N165 | <<locked>> | 98% | 55,013 psi | 88% | 2690 fps | 99.3% |
| Vihtavuori N550 | <<locked>> | 88% | 55,477 psi | 89% | 2697 fps | 100% |
| Vihtavuori N555 | <<locked>> | 94% | 53,809 psi | 86% | 2720 fps | 100% |
| Vihtavuori N560 | <<locked>> | 94% | 52,866 psi | 85% | 2766 fps | 97.4% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 52,765 psi | 85% | 2749 fps | 97.6% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 55,230 psi | 89% | 2651 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 54,186 psi | 87% | 2713 fps | 99.7% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 53,664 psi | 86% | 2861 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 55,434 psi | 89% | 2703 fps | 98.9% |
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 3100 | <<locked>> | 80% | 33,272 psi | 53% | 2297 fps | 96.5% |
| Accurate 4350 | <<locked>> | 80% | 43,772 psi | 70% | 2520 fps | 99.8% |
| Accurate MAGPRO | <<locked>> | 92% | 48,588 psi | 78% | 2697 fps | 95.7% |
| ADI AR 2208 | <<locked>> | 80% | 50,937 psi | 82% | 2579 fps | 100% |
| ADI AR 2209 | <<locked>> | 82% | 38,754 psi | 62% | 2441 fps | 95.3% |
| ADI AR 2213 | <<locked>> | 90% | 44,454 psi | 71% | 2589 fps | 95.6% |
| ADI AR 2217 | <<locked>> | 98% | 42,554 psi | 68% | 2539 fps | 95% |
| ADI AR 2225 | <<locked>> | 94% | 34,098 psi | 55% | 2408 fps | 95.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 52,359 psi | 84% | 2605 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 41,292 psi | 66% | 2513 fps | 99.8% |
| Alliant Reloder-17 | <<locked>> | 80% | 47,007 psi | 75% | 2628 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 82% | 38,667 psi | 62% | 2441 fps | 95.4% |
| Alliant Reloder-22 | <<locked>> | 86% | 39,131 psi | 63% | 2493 fps | 95.7% |
| Alliant Reloder-23 | <<locked>> | 80% | 31,560 psi | 51% | 2320 fps | 99.1% |
| Alliant Reloder-25 | <<locked>> | 82% | 29,646 psi | 48% | 2280 fps | 95.3% |
| Alliant Reloder-26 | 59.7 gr | 80% | 33,765 psi | 54% | 2434 fps | 98.1% |
| Bofors RP15 | <<locked>> | 88% | 38,798 psi | 62% | 2487 fps | 95.4% |
| Bofors RP30 | <<locked>> | 96% | 41,031 psi | 66% | 2569 fps | 95.5% |
| Bofors RP5 | <<locked>> | 86% | 39,131 psi | 63% | 2493 fps | 95.7% |
| Bofors RP7 | <<locked>> | 80% | 46,601 psi | 75% | 2516 fps | 98.4% |
| Hodgdon H1000 | <<locked>> | 94% | 40,973 psi | 66% | 2513 fps | 95.2% |
| Hodgdon H414 | <<locked>> | 80% | 44,657 psi | 72% | 2552 fps | 98.5% |
| Hodgdon H4350 | <<locked>> | 80% | 47,282 psi | 76% | 2562 fps | 97.9% |
| Hodgdon H4831 | <<locked>> | 90% | 47,355 psi | 76% | 2592 fps | 95.7% |
| Hodgdon H4831 SC | <<locked>> | 90% | 46,470 psi | 75% | 2575 fps | 95.5% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 39,334 psi | 63% | 2418 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 90% | 36,506 psi | 59% | 2500 fps | 95% |
| Hodgdon Superformance | <<locked>> | 80% | 43,511 psi | 70% | 2569 fps | 98.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,876 psi | 45% | 1480 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 41,887 psi | 67% | 2451 fps | 97.4% |
| IMR 4451 Enduron | <<locked>> | 80% | 47,413 psi | 76% | 2533 fps | 98.8% |
| IMR 4831 | <<locked>> | 80% | 41,524 psi | 67% | 2467 fps | 99.6% |
| IMR 4955 Enduron | <<locked>> | 88% | 46,296 psi | 74% | 2536 fps | 95.7% |
| IMR 7828 SSC | <<locked>> | 90% | 42,801 psi | 69% | 2566 fps | 95.1% |
| Lovex S065 | <<locked>> | 80% | 45,658 psi | 73% | 2497 fps | 99.4% |
| Lovex S070 | <<locked>> | 80% | 43,961 psi | 70% | 2487 fps | 98.5% |
| Lovex S071 | <<locked>> | 82% | 30,893 psi | 50% | 2238 fps | 95.5% |
| Norma 204 | <<locked>> | 80% | 41,466 psi | 66% | 2480 fps | 96.1% |
| Norma 217 | <<locked>> | 98% | 34,316 psi | 55% | 2451 fps | 95% |
| Norma MRP | 58 gr | 80% | 33,837 psi | 54% | 2398 fps | 95.3% |
| Norma URP | <<locked>> | 80% | 42,641 psi | 68% | 2503 fps | 99.7% |
| Ramshot Grand | <<locked>> | 90% | 42,525 psi | 68% | 2575 fps | 95.5% |
| Ramshot Hunter | <<locked>> | 80% | 41,263 psi | 66% | 2497 fps | 98.5% |
| Ramshot Magnum | <<locked>> | 88% | 35,766 psi | 57% | 2411 fps | 95.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,587 psi | 46% | 1516 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 52,649 psi | 84% | 2618 fps | 99.7% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 49,676 psi | 80% | 2667 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 42,960 psi | 69% | 2533 fps | 99.6% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 41,104 psi | 66% | 2539 fps | 99.4% |
| ReloadSwiss RS 76 | <<locked>> | 90% | 35,752 psi | 57% | 2484 fps | 96% |
| Rottweil R 903 | <<locked>> | 80% | 50,517 psi | 81% | 2579 fps | 100% |
| Rottweil R 904 | <<locked>> | 84% | 42,569 psi | 68% | 2470 fps | 95.3% |
| Rottweil R 905 | <<locked>> | 82% | 37,956 psi | 61% | 2428 fps | 95.4% |
| Rottweil R 907 | <<locked>> | 80% | 46,601 psi | 75% | 2516 fps | 98.4% |
| Shooters World Long Rifle | <<locked>> | 80% | 45,658 psi | 73% | 2497 fps | 99.4% |
| Shooters World SW4350 | <<locked>> | 80% | 43,961 psi | 70% | 2487 fps | 98.5% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 50,923 psi | 82% | 2621 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 50,502 psi | 81% | 2461 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 44,556 psi | 71% | 2444 fps | 98.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 82% | 37,608 psi | 60% | 2421 fps | 95.2% |
| Somchem S355 | <<locked>> | 80% | 50,299 psi | 81% | 2572 fps | 100% |
| Somchem S361 | <<locked>> | 86% | 46,180 psi | 74% | 2513 fps | 95.3% |
| Somchem S365 | <<locked>> | 80% | 39,479 psi | 63% | 2470 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 36,593 psi | 59% | 2369 fps | 95.8% |
| Vihtavuori N150 | <<locked>> | 80% | 48,037 psi | 77% | 2500 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 43,947 psi | 70% | 2497 fps | 99.8% |
| Vihtavuori N165 | <<locked>> | 84% | 35,839 psi | 57% | 2349 fps | 95.1% |
| Vihtavuori N550 | <<locked>> | 80% | 43,497 psi | 70% | 2503 fps | 99.6% |
| Vihtavuori N555 | <<locked>> | 80% | 35,302 psi | 57% | 2388 fps | 99% |
| Vihtavuori N560 | 63.8 gr | 88% | 43,816 psi | 70% | 2602 fps | 95.1% |
| Vihtavuori N565 | <<locked>> | 94% | 43,613 psi | 70% | 2592 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 42,583 psi | 68% | 2461 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 44,889 psi | 72% | 2556 fps | 98.6% |
| Winchester StaBALL HD | <<locked>> | 80% | 28,326 psi | 45% | 2329 fps | 99.1% |
| Winchester Supreme 780 | <<locked>> | 84% | 37,739 psi | 61% | 2395 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 75 powders for .300 Win. Mag. loaded with the .308 | 200gr | Barnes X S. Winchester StaBALL HD delivers the highest muzzle velocity at 2,861 fps; across all powders the maximum-charge window runs from 1,657 fps to 2,861 fps. ADI AR 2217 gives the best case fill at 100 %, and 75 of the 75 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 200.0 gr projectile in 0.308" calls for a 1:11.0 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. Alliant Reloder-26, Norma MRP, Vihtavuori N560 rank at the top here: for .300 Win. Mag. with the .308 | 200gr | Barnes X S 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.