Load Specifications
Load data in caliber .300 Win. Mag. with .308 | 201gr | RWS Kegelspitz 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% | 55,579 psi | 89% | 2644 fps | 99.6% |
| Accurate 3100 | <<locked>> | 96% | 53,621 psi | 86% | 2694 fps | 100% |
| Accurate 4350 | <<locked>> | 88% | 55,303 psi | 89% | 2730 fps | 100% |
| Accurate MAGPRO | <<locked>> | 96% | 52,562 psi | 84% | 2779 fps | 96.4% |
| ADI AR 2208 | <<locked>> | 82% | 53,867 psi | 86% | 2644 fps | 100% |
| ADI AR 2209 | <<locked>> | 94% | 55,985 psi | 90% | 2779 fps | 99.3% |
| ADI AR 2213 | <<locked>> | 96% | 53,592 psi | 86% | 2779 fps | 98.2% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 44,788 psi | 72% | 2618 fps | 96.4% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 39,697 psi | 64% | 2579 fps | 98.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 54,723 psi | 88% | 2664 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 90% | 56,202 psi | 90% | 2782 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 84% | 53,592 psi | 86% | 2746 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 94% | 55,492 psi | 89% | 2769 fps | 99.3% |
| Alliant Reloder-22 | <<locked>> | 96% | 53,214 psi | 85% | 2776 fps | 99.1% |
| Alliant Reloder-23 | <<locked>> | 98% | 54,244 psi | 87% | 2756 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 49,980 psi | 80% | 2753 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 94% | 54,389 psi | 87% | 2838 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 55,796 psi | 89% | 2812 fps | 99.3% |
| Bofors RP3 | <<locked>> | 82% | 55,825 psi | 90% | 2684 fps | 100% |
| Bofors RP30ᴾ | <<locked>> | 100% | 45,905 psi | 74% | 2687 fps | 97.3% |
| Bofors RP5 | <<locked>> | 96% | 53,214 psi | 85% | 2776 fps | 99.1% |
| Bofors RP7 | <<locked>> | 86% | 54,868 psi | 88% | 2680 fps | 99.6% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 46,021 psi | 74% | 2644 fps | 97.4% |
| Hodgdon H380 | <<locked>> | 82% | 55,796 psi | 89% | 2700 fps | 100% |
| Hodgdon H414 | <<locked>> | 84% | 54,534 psi | 87% | 2740 fps | 99.8% |
| Hodgdon H4350 | <<locked>> | 88% | 55,042 psi | 88% | 2717 fps | 99.3% |
| Hodgdon H4831 | <<locked>> | 98% | 53,026 psi | 85% | 2710 fps | 97.5% |
| Hodgdon H4831 SC | <<locked>> | 96% | 56,260 psi | 90% | 2759 fps | 98% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 56,333 psi | 90% | 2703 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 48,979 psi | 79% | 2805 fps | 99.3% |
| Hodgdon Superformance | <<locked>> | 86% | 53,621 psi | 86% | 2762 fps | 99.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,941 psi | 59% | 1677 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 56,188 psi | 90% | 2667 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 84% | 54,781 psi | 88% | 2654 fps | 99.8% |
| IMR 4350 | <<locked>> | 90% | 56,057 psi | 90% | 2713 fps | 99.7% |
| IMR 4451 Enduron | <<locked>> | 86% | 56,347 psi | 90% | 2703 fps | 99.9% |
| IMR 4831 | <<locked>> | 92% | 53,417 psi | 86% | 2690 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 55,114 psi | 88% | 2710 fps | 98% |
| IMR 7828 SSC | <<locked>> | 96% | 55,361 psi | 89% | 2818 fps | 98.6% |
| Lovex S065 | <<locked>> | 86% | 53,461 psi | 86% | 2651 fps | 100% |
| Lovex S070 | <<locked>> | 88% | 54,752 psi | 88% | 2694 fps | 99.9% |
| Lovex S071ᴾ | <<locked>> | 100% | 50,995 psi | 82% | 2654 fps | 99.9% |
| Norma 204 | <<locked>> | 88% | 53,272 psi | 85% | 2713 fps | 98.9% |
| Norma MRP | <<locked>> | 94% | 52,953 psi | 85% | 2799 fps | 99.8% |
| Norma URP | <<locked>> | 88% | 53,911 psi | 86% | 2713 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 54,969 psi | 88% | 2822 fps | 98.8% |
| Ramshot Hunter | <<locked>> | 90% | 56,159 psi | 90% | 2769 fps | 100% |
| Ramshot Magnum | <<locked>> | 98% | 55,796 psi | 89% | 2802 fps | 99.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,550 psi | 60% | 1713 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 55,506 psi | 89% | 2687 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 53,113 psi | 85% | 2733 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 55,259 psi | 89% | 2753 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 53,374 psi | 86% | 2776 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 49,197 psi | 79% | 2805 fps | 99.8% |
| Rottweil R 903 | <<locked>> | 84% | 55,912 psi | 90% | 2680 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 54,056 psi | 87% | 2700 fps | 98.3% |
| Rottweil R 905 | <<locked>> | 94% | 54,955 psi | 88% | 2756 fps | 99.3% |
| Rottweil R 907 | <<locked>> | 86% | 54,868 psi | 88% | 2680 fps | 99.6% |
| Shooters World Long Rifle | <<locked>> | 86% | 53,461 psi | 86% | 2651 fps | 100% |
| Shooters World SW4350 | <<locked>> | 88% | 54,752 psi | 88% | 2694 fps | 99.9% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 53,853 psi | 86% | 2687 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 56,144 psi | 90% | 2559 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 56,289 psi | 90% | 2657 fps | 99.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 54,505 psi | 87% | 2753 fps | 99.2% |
| Somchem S355 | <<locked>> | 84% | 55,840 psi | 90% | 2677 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 55,390 psi | 89% | 2690 fps | 97.8% |
| Somchem S365 | <<locked>> | 90% | 53,737 psi | 86% | 2713 fps | 100% |
| Somchem S385 | <<locked>> | 94% | 55,608 psi | 89% | 2733 fps | 99.7% |
| Unknown powder | <<locked>> | 86% | 54,389 psi | 87% | 2717 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 54,157 psi | 87% | 2615 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 54,708 psi | 88% | 2687 fps | 100% |
| Vihtavuori N165 | <<locked>> | 98% | 53,069 psi | 85% | 2687 fps | 99.3% |
| Vihtavuori N550 | <<locked>> | 86% | 55,071 psi | 88% | 2730 fps | 100% |
| Vihtavuori N555 | <<locked>> | 94% | 53,258 psi | 85% | 2733 fps | 100% |
| Vihtavuori N560 | <<locked>> | 96% | 53,476 psi | 86% | 2802 fps | 97.9% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 52,388 psi | 84% | 2769 fps | 97.9% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 55,187 psi | 88% | 2667 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 54,534 psi | 87% | 2740 fps | 99.8% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 54,549 psi | 87% | 2881 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 53,229 psi | 85% | 2697 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 2700 | <<locked>> | 80% | 48,733 psi | 78% | 2539 fps | 98.8% |
| Accurate 3100 | <<locked>> | 80% | 31,357 psi | 50% | 2277 fps | 96% |
| Accurate 4350 | <<locked>> | 80% | 42,337 psi | 68% | 2523 fps | 99.8% |
| Accurate MAGPRO | <<locked>> | 94% | 48,892 psi | 78% | 2717 fps | 95.5% |
| ADI AR 2208 | <<locked>> | 80% | 50,459 psi | 81% | 2595 fps | 100% |
| ADI AR 2209 | <<locked>> | 82% | 37,869 psi | 61% | 2451 fps | 95.4% |
| ADI AR 2213 | 65.1 gr | 88% | 41,118 psi | 66% | 2549 fps | 95% |
| ADI AR 2217 | <<locked>> | 98% | 42,061 psi | 67% | 2562 fps | 95.5% |
| ADI AR 2225 | <<locked>> | 94% | 32,880 psi | 53% | 2408 fps | 95.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 51,488 psi | 83% | 2618 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 40,553 psi | 65% | 2526 fps | 99.8% |
| Alliant Reloder-17 | <<locked>> | 80% | 46,499 psi | 75% | 2638 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 82% | 37,724 psi | 60% | 2448 fps | 95.5% |
| Alliant Reloder-22 | <<locked>> | 86% | 38,116 psi | 61% | 2497 fps | 95.8% |
| Alliant Reloder-23 | <<locked>> | 80% | 30,139 psi | 48% | 2306 fps | 98.9% |
| Alliant Reloder-25 | <<locked>> | 84% | 30,008 psi | 48% | 2320 fps | 96% |
| Alliant Reloder-26 | <<locked>> | 80% | 32,489 psi | 52% | 2425 fps | 97.9% |
| Bofors RP15 | <<locked>> | 88% | 37,811 psi | 61% | 2490 fps | 95.5% |
| Bofors RP3 | <<locked>> | 80% | 52,228 psi | 84% | 2635 fps | 100% |
| Bofors RP30 | <<locked>> | 96% | 40,219 psi | 64% | 2575 fps | 95.7% |
| Bofors RP5 | <<locked>> | 86% | 38,116 psi | 61% | 2497 fps | 95.8% |
| Bofors RP7 | <<locked>> | 80% | 45,556 psi | 73% | 2526 fps | 98.5% |
| Hodgdon H1000 | <<locked>> | 96% | 40,350 psi | 65% | 2530 fps | 95.6% |
| Hodgdon H380 | <<locked>> | 80% | 52,257 psi | 84% | 2648 fps | 100% |
| Hodgdon H414 | <<locked>> | 80% | 47,630 psi | 76% | 2631 fps | 99.2% |
| Hodgdon H4350 | <<locked>> | 80% | 42,975 psi | 69% | 2510 fps | 97.3% |
| Hodgdon H4831 | <<locked>> | 92% | 43,700 psi | 70% | 2549 fps | 95.2% |
| Hodgdon H4831 SC | <<locked>> | 88% | 43,091 psi | 69% | 2539 fps | 95% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 38,363 psi | 62% | 2421 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 90% | 35,389 psi | 57% | 2503 fps | 95.1% |
| Hodgdon Superformance | <<locked>> | 80% | 42,946 psi | 69% | 2582 fps | 98.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,543 psi | 44% | 1493 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 49,719 psi | 80% | 2575 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 80% | 48,602 psi | 78% | 2556 fps | 99.3% |
| IMR 4350 | <<locked>> | 80% | 40,988 psi | 66% | 2461 fps | 97.5% |
| IMR 4451 Enduron | <<locked>> | 80% | 46,949 psi | 75% | 2552 fps | 99% |
| IMR 4831 | <<locked>> | 80% | 36,724 psi | 59% | 2398 fps | 99.1% |
| IMR 4955 Enduron | <<locked>> | 86% | 43,004 psi | 69% | 2500 fps | 95.2% |
| IMR 7828 SSC | <<locked>> | 88% | 42,206 psi | 68% | 2582 fps | 95.5% |
| Lovex S065 | <<locked>> | 80% | 44,469 psi | 71% | 2503 fps | 99.5% |
| Lovex S070 | <<locked>> | 80% | 42,685 psi | 68% | 2493 fps | 98.5% |
| Lovex S071 | <<locked>> | 84% | 30,647 psi | 49% | 2260 fps | 95.7% |
| Norma 204 | <<locked>> | 80% | 40,785 psi | 65% | 2493 fps | 96.3% |
| Norma MRP | 61.1 gr | 80% | 32,518 psi | 52% | 2392 fps | 95.1% |
| Norma URP | <<locked>> | 80% | 41,611 psi | 67% | 2510 fps | 99.7% |
| Ramshot Grand | <<locked>> | 86% | 40,915 psi | 66% | 2572 fps | 95.5% |
| Ramshot Hunter | <<locked>> | 80% | 40,509 psi | 65% | 2507 fps | 98.6% |
| Ramshot Magnum | <<locked>> | 86% | 35,650 psi | 57% | 2438 fps | 95.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,166 psi | 45% | 1532 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 52,069 psi | 83% | 2638 fps | 99.8% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 49,342 psi | 79% | 2680 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 42,105 psi | 68% | 2539 fps | 99.7% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 40,408 psi | 65% | 2552 fps | 99.4% |
| ReloadSwiss RS 76 | <<locked>> | 90% | 34,606 psi | 55% | 2484 fps | 96% |
| Rottweil R 903 | <<locked>> | 80% | 49,211 psi | 79% | 2585 fps | 100% |
| Rottweil R 904 | <<locked>> | 84% | 41,872 psi | 67% | 2487 fps | 95.5% |
| Rottweil R 905 | <<locked>> | 82% | 37,028 psi | 59% | 2431 fps | 95.4% |
| Rottweil R 907 | <<locked>> | 80% | 45,556 psi | 73% | 2526 fps | 98.5% |
| Shooters World Long Rifle | <<locked>> | 80% | 44,469 psi | 71% | 2503 fps | 99.5% |
| Shooters World SW4350 | <<locked>> | 80% | 42,685 psi | 68% | 2493 fps | 98.5% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 50,488 psi | 81% | 2638 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 49,850 psi | 80% | 2477 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 43,497 psi | 70% | 2454 fps | 98.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 82% | 36,695 psi | 59% | 2428 fps | 95.3% |
| Somchem S355 | <<locked>> | 80% | 49,269 psi | 79% | 2582 fps | 100% |
| Somchem S361 | <<locked>> | 86% | 45,658 psi | 73% | 2533 fps | 95.7% |
| Somchem S365 | <<locked>> | 80% | 38,305 psi | 61% | 2467 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 35,201 psi | 56% | 2365 fps | 95.7% |
| Unknown powder | <<locked>> | 80% | 44,744 psi | 72% | 2562 fps | 99.7% |
| Vihtavuori N150 | <<locked>> | 80% | 42,453 psi | 68% | 2438 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 44,860 psi | 72% | 2533 fps | 99.9% |
| Vihtavuori N165 | <<locked>> | 86% | 35,969 psi | 58% | 2379 fps | 95.6% |
| Vihtavuori N550 | <<locked>> | 80% | 45,324 psi | 73% | 2575 fps | 99.9% |
| Vihtavuori N555 | <<locked>> | 80% | 33,634 psi | 54% | 2375 fps | 98.9% |
| Vihtavuori N560 | 67.3 gr | 90% | 43,743 psi | 70% | 2628 fps | 95.5% |
| Vihtavuori N565 | <<locked>> | 94% | 42,772 psi | 69% | 2598 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 41,930 psi | 67% | 2474 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 47,630 psi | 76% | 2631 fps | 99.2% |
| Winchester StaBALL HD | <<locked>> | 80% | 26,672 psi | 43% | 2306 fps | 98.7% |
| Winchester Supreme 780 | <<locked>> | 82% | 37,405 psi | 60% | 2415 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 Kegelspitz. Winchester StaBALL HD delivers the highest muzzle velocity at 2,881 fps; across all powders the maximum-charge window runs from 1,677 fps to 2,881 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 1:14.0 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. Vihtavuori N560, Norma MRP, ADI AR 2213 rank at the top here: for .300 Win. Mag. with the .308 | 201gr | RWS Kegelspitz 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.