Load Specifications
Load data in caliber .300 Win. Mag. with .308 | 200gr | NorthFork Bonded Core bullet and 82 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Norma MRP, Vihtavuori N560 and Alliant Reloder-26.
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>> | 82% | 55,854 psi | 90% | 2651 fps | 99.5% |
| Accurate 3100 | <<locked>> | 98% | 54,665 psi | 88% | 2707 fps | 100% |
| Accurate 4064 | <<locked>> | 82% | 55,622 psi | 89% | 2628 fps | 100% |
| Accurate 4350 | <<locked>> | 88% | 52,982 psi | 85% | 2694 fps | 100% |
| Accurate MAGPRO | <<locked>> | 96% | 53,040 psi | 85% | 2792 fps | 96.9% |
| ADI AR 2208 | <<locked>> | 84% | 55,463 psi | 89% | 2664 fps | 100% |
| ADI AR 2209 | <<locked>> | 94% | 53,737 psi | 86% | 2740 fps | 98.9% |
| ADI AR 2213 | <<locked>> | 98% | 55,143 psi | 88% | 2795 fps | 98.2% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 37,913 psi | 61% | 2530 fps | 97.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 56,275 psi | 90% | 2684 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 90% | 53,882 psi | 86% | 2746 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 86% | 54,998 psi | 88% | 2766 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 94% | 53,330 psi | 86% | 2733 fps | 98.8% |
| Alliant Reloder-22 | <<locked>> | 98% | 54,447 psi | 87% | 2792 fps | 99.1% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 55,143 psi | 88% | 2766 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 47,616 psi | 76% | 2713 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 96% | 55,419 psi | 89% | 2854 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 53,403 psi | 86% | 2776 fps | 98.9% |
| Bofors RP3 | <<locked>> | 82% | 53,693 psi | 86% | 2651 fps | 100% |
| Bofors RP30ᴾ | <<locked>> | 100% | 43,540 psi | 70% | 2638 fps | 96.4% |
| Bofors RP5 | <<locked>> | 98% | 54,447 psi | 87% | 2792 fps | 99.1% |
| Bofors RP7 | <<locked>> | 86% | 53,069 psi | 85% | 2648 fps | 99.3% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 47,195 psi | 76% | 2657 fps | 97.4% |
| Hodgdon H380 | <<locked>> | 82% | 54,041 psi | 87% | 2674 fps | 100% |
| Hodgdon H414 | <<locked>> | 88% | 55,114 psi | 88% | 2746 fps | 99.8% |
| Hodgdon H4350 | <<locked>> | 86% | 54,621 psi | 88% | 2703 fps | 99.1% |
| Hodgdon H4831 | <<locked>> | 96% | 55,230 psi | 89% | 2740 fps | 97.6% |
| Hodgdon H4831 SC | <<locked>> | 96% | 53,983 psi | 87% | 2720 fps | 97.3% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 54,085 psi | 87% | 2674 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 46,717 psi | 75% | 2759 fps | 98.7% |
| Hodgdon Superformance | <<locked>> | 88% | 55,129 psi | 88% | 2782 fps | 99.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,666 psi | 59% | 1663 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 54,824 psi | 88% | 2644 fps | 100% |
| IMR 4350 | <<locked>> | 90% | 54,099 psi | 87% | 2680 fps | 99.5% |
| IMR 4451 Enduron | <<locked>> | 86% | 54,592 psi | 88% | 2671 fps | 99.7% |
| IMR 4831 | <<locked>> | 90% | 53,388 psi | 86% | 2687 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 53,156 psi | 85% | 2671 fps | 97.3% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 56,173 psi | 90% | 2825 fps | 98.4% |
| Lovex S062 | <<locked>> | 82% | 55,129 psi | 88% | 2638 fps | 100% |
| Lovex S065 | <<locked>> | 88% | 54,897 psi | 88% | 2667 fps | 100% |
| Lovex S070 | <<locked>> | 90% | 56,333 psi | 90% | 2713 fps | 99.9% |
| Lovex S071ᴾ | <<locked>> | 100% | 48,791 psi | 78% | 2621 fps | 99.7% |
| Norma 203B | <<locked>> | 82% | 55,840 psi | 90% | 2694 fps | 100% |
| Norma 204 | <<locked>> | 90% | 54,737 psi | 88% | 2730 fps | 98.9% |
| Norma MRP | <<locked>> | 96% | 53,911 psi | 86% | 2812 fps | 99.8% |
| Norma URP | <<locked>> | 90% | 55,347 psi | 89% | 2730 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 52,939 psi | 85% | 2785 fps | 98.2% |
| Ramshot Hunter | <<locked>> | 90% | 53,925 psi | 86% | 2733 fps | 99.9% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 50,792 psi | 81% | 2723 fps | 99.1% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,492 psi | 60% | 1703 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 53,693 psi | 86% | 2657 fps | 99.8% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 54,389 psi | 87% | 2753 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 52,852 psi | 85% | 2717 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 54,810 psi | 88% | 2795 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 46,746 psi | 75% | 2753 fps | 99.4% |
| Rottweil R 903 | <<locked>> | 84% | 54,041 psi | 87% | 2654 fps | 100% |
| Rottweil R 904 | <<locked>> | 94% | 55,317 psi | 89% | 2710 fps | 98.2% |
| Rottweil R 905 | <<locked>> | 96% | 56,260 psi | 90% | 2772 fps | 99.3% |
| Rottweil R 907 | <<locked>> | 86% | 53,069 psi | 85% | 2648 fps | 99.3% |
| Shooters World Long Rifle | <<locked>> | 88% | 54,897 psi | 88% | 2667 fps | 100% |
| Shooters World Precision | <<locked>> | 82% | 55,129 psi | 88% | 2638 fps | 100% |
| Shooters World SW4350 | <<locked>> | 90% | 56,333 psi | 90% | 2713 fps | 99.9% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 55,274 psi | 89% | 2707 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 54,621 psi | 88% | 2536 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 54,331 psi | 87% | 2625 fps | 99.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 55,796 psi | 89% | 2769 fps | 99.2% |
| Somchem S355 | <<locked>> | 84% | 53,809 psi | 86% | 2648 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 53,403 psi | 86% | 2654 fps | 97.2% |
| Somchem S365 | <<locked>> | 92% | 54,926 psi | 88% | 2730 fps | 100% |
| Somchem S385 | <<locked>> | 94% | 53,243 psi | 85% | 2697 fps | 99.4% |
| Vihtavuori N150 | <<locked>> | 86% | 55,100 psi | 88% | 2621 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 53,621 psi | 86% | 2671 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 56,014 psi | 90% | 2723 fps | 99.4% |
| Vihtavuori N540 | <<locked>> | 82% | 55,869 psi | 90% | 2618 fps | 100% |
| Vihtavuori N550 | <<locked>> | 90% | 56,231 psi | 90% | 2726 fps | 100% |
| Vihtavuori N555 | <<locked>> | 96% | 54,186 psi | 87% | 2746 fps | 100% |
| Vihtavuori N560 | <<locked>> | 96% | 54,012 psi | 87% | 2805 fps | 97.7% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 49,647 psi | 80% | 2720 fps | 97.1% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 53,098 psi | 85% | 2641 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 55,114 psi | 88% | 2746 fps | 99.8% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 50,995 psi | 82% | 2838 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 52,953 psi | 85% | 2687 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 2700 | <<locked>> | 80% | 52,286 psi | 84% | 2598 fps | 99.1% |
| Accurate 3100 | <<locked>> | 80% | 29,878 psi | 48% | 2241 fps | 95.1% |
| Accurate 4064 | <<locked>> | 80% | 52,272 psi | 84% | 2585 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 40,480 psi | 65% | 2487 fps | 99.5% |
| Accurate MAGPRO | <<locked>> | 92% | 46,122 psi | 74% | 2671 fps | 95.2% |
| ADI AR 2208 | <<locked>> | 80% | 48,936 psi | 78% | 2566 fps | 100% |
| ADI AR 2209 | <<locked>> | 84% | 38,885 psi | 62% | 2470 fps | 95.5% |
| ADI AR 2213 | <<locked>> | 92% | 45,121 psi | 72% | 2621 fps | 95.9% |
| ADI AR 2225 | <<locked>> | 96% | 33,533 psi | 54% | 2418 fps | 95.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 49,893 psi | 80% | 2592 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 39,044 psi | 63% | 2493 fps | 99.6% |
| Alliant Reloder-17 | <<locked>> | 80% | 44,411 psi | 71% | 2605 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 84% | 38,696 psi | 62% | 2464 fps | 95.5% |
| Alliant Reloder-22 | <<locked>> | 88% | 38,972 psi | 62% | 2513 fps | 95.8% |
| Alliant Reloder-23 | <<locked>> | 80% | 28,776 psi | 46% | 2270 fps | 98.3% |
| Alliant Reloder-25 | <<locked>> | 86% | 30,618 psi | 49% | 2336 fps | 96% |
| Alliant Reloder-26 | 60.8 gr | 80% | 30,850 psi | 49% | 2382 fps | 97% |
| Bofors RP15 | <<locked>> | 90% | 38,667 psi | 62% | 2507 fps | 95.5% |
| Bofors RP3 | <<locked>> | 80% | 50,343 psi | 81% | 2605 fps | 100% |
| Bofors RP30 | <<locked>> | 98% | 40,785 psi | 65% | 2585 fps | 95.5% |
| Bofors RP5 | <<locked>> | 88% | 38,972 psi | 62% | 2513 fps | 95.8% |
| Bofors RP7 | <<locked>> | 80% | 43,961 psi | 70% | 2493 fps | 98% |
| Hodgdon H1000 | <<locked>> | 96% | 41,379 psi | 66% | 2546 fps | 95.6% |
| Hodgdon H380 | <<locked>> | 80% | 50,517 psi | 81% | 2618 fps | 100% |
| Hodgdon H414 | <<locked>> | 80% | 42,351 psi | 68% | 2533 fps | 98.2% |
| Hodgdon H4350 | <<locked>> | 80% | 45,092 psi | 72% | 2546 fps | 97.6% |
| Hodgdon H4831 | <<locked>> | 90% | 45,208 psi | 72% | 2575 fps | 95.3% |
| Hodgdon H4831 SC | <<locked>> | 90% | 44,164 psi | 71% | 2552 fps | 95% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 36,637 psi | 59% | 2388 fps | 99.8% |
| Hodgdon Retumbo | <<locked>> | 92% | 36,114 psi | 58% | 2516 fps | 95% |
| Hodgdon Superformance | <<locked>> | 80% | 41,075 psi | 66% | 2543 fps | 97.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,543 psi | 44% | 1486 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 51,503 psi | 83% | 2598 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 39,668 psi | 64% | 2428 fps | 96.9% |
| IMR 4451 Enduron | <<locked>> | 80% | 45,397 psi | 73% | 2520 fps | 98.6% |
| IMR 4831 | <<locked>> | 80% | 38,696 psi | 62% | 2438 fps | 99.3% |
| IMR 4955 Enduron | <<locked>> | 88% | 44,179 psi | 71% | 2520 fps | 95.2% |
| IMR 7828 SSC | <<locked>> | 92% | 43,033 psi | 69% | 2595 fps | 95.4% |
| Lovex S062 | <<locked>> | 80% | 51,779 psi | 83% | 2592 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 42,859 psi | 69% | 2470 fps | 99.1% |
| Lovex S070 | <<locked>> | 80% | 41,278 psi | 66% | 2461 fps | 98% |
| Lovex S071 | <<locked>> | 86% | 31,212 psi | 50% | 2274 fps | 95.7% |
| Norma 203B | <<locked>> | 80% | 52,475 psi | 84% | 2644 fps | 100% |
| Norma 204 | <<locked>> | 80% | 39,073 psi | 63% | 2451 fps | 95.4% |
| Norma MRP | 60.5 gr | 82% | 33,272 psi | 53% | 2408 fps | 95.1% |
| Norma URP | <<locked>> | 80% | 40,074 psi | 64% | 2480 fps | 99.4% |
| Ramshot Grand | <<locked>> | 92% | 42,786 psi | 69% | 2605 fps | 95.7% |
| Ramshot Hunter | <<locked>> | 80% | 38,740 psi | 62% | 2467 fps | 98% |
| Ramshot Magnum | <<locked>> | 90% | 35,534 psi | 57% | 2431 fps | 95.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,978 psi | 45% | 1519 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 50,473 psi | 81% | 2605 fps | 99.6% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 47,166 psi | 76% | 2648 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 40,205 psi | 64% | 2503 fps | 99.3% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 38,783 psi | 62% | 2513 fps | 99% |
| ReloadSwiss RS 76 | <<locked>> | 92% | 35,317 psi | 57% | 2497 fps | 95.9% |
| Rottweil R 903 | <<locked>> | 80% | 47,543 psi | 76% | 2556 fps | 100% |
| Rottweil R 904 | <<locked>> | 86% | 43,091 psi | 69% | 2507 fps | 95.6% |
| Rottweil R 905 | <<locked>> | 84% | 37,942 psi | 61% | 2451 fps | 95.5% |
| Rottweil R 907 | <<locked>> | 80% | 43,961 psi | 70% | 2493 fps | 98% |
| Shooters World Long Rifle | <<locked>> | 80% | 42,859 psi | 69% | 2470 fps | 99.1% |
| Shooters World Precision | <<locked>> | 80% | 51,779 psi | 83% | 2592 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 41,278 psi | 66% | 2461 fps | 98% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 48,501 psi | 78% | 2608 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 48,254 psi | 77% | 2451 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 42,018 psi | 67% | 2421 fps | 98.1% |
| SNPE Vectan Tubal 8000 | <<locked>> | 84% | 37,594 psi | 60% | 2444 fps | 95.3% |
| Somchem S355 | <<locked>> | 80% | 47,442 psi | 76% | 2549 fps | 100% |
| Somchem S361 | <<locked>> | 88% | 46,862 psi | 75% | 2546 fps | 95.7% |
| Somchem S365 | <<locked>> | 80% | 36,637 psi | 59% | 2438 fps | 100% |
| Somchem S385 | <<locked>> | 82% | 36,013 psi | 58% | 2382 fps | 95.7% |
| Vihtavuori N150 | <<locked>> | 80% | 45,513 psi | 73% | 2484 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 41,452 psi | 66% | 2474 fps | 99.6% |
| Vihtavuori N165 | <<locked>> | 86% | 35,433 psi | 57% | 2362 fps | 95.1% |
| Vihtavuori N540 | <<locked>> | 80% | 52,330 psi | 84% | 2572 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 40,785 psi | 65% | 2477 fps | 99.4% |
| Vihtavuori N555 | <<locked>> | 80% | 32,169 psi | 52% | 2343 fps | 98.3% |
| Vihtavuori N560 | 66.4 gr | 90% | 44,135 psi | 71% | 2628 fps | 95.3% |
| Vihtavuori N565 | <<locked>> | 96% | 43,366 psi | 70% | 2608 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 40,364 psi | 65% | 2444 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 42,351 psi | 68% | 2533 fps | 98.2% |
| Winchester StaBALL HD | <<locked>> | 80% | 25,454 psi | 41% | 2257 fps | 97.8% |
| Winchester Supreme 780 | <<locked>> | 86% | 37,637 psi | 60% | 2418 fps | 95.1% |
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 88 powders for .300 Win. Mag. loaded with the .308 | 200gr | NorthFork Bonded Core. Alliant Reloder-26 delivers the highest muzzle velocity at 2,854 fps; across all powders the maximum-charge window runs from 1,663 fps to 2,854 fps. ADI AR 2217 gives the best case fill at 100 %, and 88 of the 88 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (430 MPa), the top charges use 54–90 %, leaving at least 10 % headroom. The 200.0 gr projectile in 0.308" calls for a 1:12.0 twist; slower twists will usually not stabilise this weight. ADI AR 2217, ADI AR 2225, Alliant Reloder-23 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. Norma MRP, Vihtavuori N560, Alliant Reloder-26 rank at the top here: for .300 Win. Mag. with the .308 | 200gr | NorthFork Bonded Core they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Baschieri & Pellagri 109, IMR 8133 Enduron, 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.