Load Specifications
Load data in caliber .300 Weath. Mag. with .308 | 200gr | NorthFork Bonded Core bullet and 76 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-26, Winchester StaBALL HD and IMR 7828 SSC.
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% | 57,537 psi | 90% | 2782 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 55,492 psi | 87% | 2762 fps | 100% |
| Accurate MAGPRO | <<locked>> | 94% | 56,072 psi | 88% | 2877 fps | 98.1% |
| ADI AR 2208 | <<locked>> | 82% | 56,478 psi | 89% | 2720 fps | 100% |
| ADI AR 2209 | <<locked>> | 92% | 56,130 psi | 88% | 2818 fps | 99.5% |
| ADI AR 2213 | <<locked>> | 96% | 57,624 psi | 90% | 2877 fps | 99.1% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 48,080 psi | 75% | 2720 fps | 97.8% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 42,844 psi | 67% | 2680 fps | 99.3% |
| Alliant Reloder-16 | <<locked>> | 88% | 56,159 psi | 88% | 2812 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 84% | 57,392 psi | 90% | 2828 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 92% | 55,637 psi | 87% | 2805 fps | 99.5% |
| Alliant Reloder-22 | <<locked>> | 96% | 57,493 psi | 90% | 2874 fps | 99.7% |
| Alliant Reloder-23 | <<locked>> | 96% | 54,868 psi | 86% | 2789 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 54,172 psi | 85% | 2851 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 92% | 55,042 psi | 86% | 2877 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 96% | 55,593 psi | 87% | 2782 fps | 96.2% |
| Bofors RP15 | <<locked>> | 98% | 56,391 psi | 88% | 2854 fps | 99.6% |
| Bofors RP30ᴾ | <<locked>> | 100% | 50,111 psi | 79% | 2789 fps | 98.5% |
| Bofors RP5 | <<locked>> | 96% | 57,493 psi | 90% | 2874 fps | 99.7% |
| Bofors RP7 | <<locked>> | 84% | 54,447 psi | 85% | 2710 fps | 99.7% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 53,142 psi | 83% | 2808 fps | 99.2% |
| Hodgdon H414 | <<locked>> | 86% | 57,043 psi | 89% | 2812 fps | 100% |
| Hodgdon H4350 | <<locked>> | 84% | 56,159 psi | 88% | 2772 fps | 99.6% |
| Hodgdon H4831 | <<locked>> | 94% | 57,624 psi | 90% | 2818 fps | 98.6% |
| Hodgdon H4831 SC | <<locked>> | 94% | 56,449 psi | 88% | 2802 fps | 98.4% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 56,507 psi | 89% | 2740 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 52,939 psi | 83% | 2913 fps | 99.9% |
| Hodgdon Superformance | <<locked>> | 86% | 57,537 psi | 90% | 2851 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,057 psi | 58% | 1716 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 55,927 psi | 88% | 2749 fps | 99.8% |
| IMR 4451 Enduron | <<locked>> | 84% | 55,796 psi | 87% | 2733 fps | 99.9% |
| IMR 4831 | <<locked>> | 88% | 55,753 psi | 87% | 2753 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 54,969 psi | 86% | 2746 fps | 98.3% |
| IMR 7828 SSC | <<locked>> | 96% | 55,390 psi | 87% | 2858 fps | 98.9% |
| Lovex S065 | <<locked>> | 86% | 56,405 psi | 88% | 2733 fps | 100% |
| Lovex S070 | <<locked>> | 86% | 54,491 psi | 85% | 2726 fps | 99.9% |
| Lovex S071ᴾ | <<locked>> | 100% | 54,955 psi | 86% | 2746 fps | 100% |
| Norma 204 | <<locked>> | 88% | 56,811 psi | 89% | 2805 fps | 99.5% |
| Norma 217ᴾ | <<locked>> | 100% | 38,464 psi | 60% | 2608 fps | 97.6% |
| Norma MRP | <<locked>> | 94% | 57,348 psi | 90% | 2894 fps | 100% |
| Norma URP | <<locked>> | 88% | 57,464 psi | 90% | 2795 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 56,057 psi | 88% | 2877 fps | 99.2% |
| Ramshot Hunter | <<locked>> | 88% | 56,217 psi | 88% | 2802 fps | 100% |
| Ramshot Magnum | <<locked>> | 98% | 54,157 psi | 85% | 2812 fps | 99.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,855 psi | 59% | 1755 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 57,072 psi | 89% | 2815 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 55,347 psi | 87% | 2785 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 57,595 psi | 90% | 2867 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 53,534 psi | 84% | 2910 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 48,443 psi | 76% | 2795 fps | 96.8% |
| Rottweil R 903 | <<locked>> | 82% | 55,637 psi | 87% | 2710 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 57,421 psi | 90% | 2789 fps | 99% |
| Rottweil R 905 | <<locked>> | 92% | 55,013 psi | 86% | 2792 fps | 99.5% |
| Rottweil R 907 | <<locked>> | 84% | 54,447 psi | 85% | 2710 fps | 99.7% |
| Shooters World Long Rifle | <<locked>> | 86% | 56,405 psi | 88% | 2733 fps | 100% |
| Shooters World SW4350 | <<locked>> | 86% | 54,491 psi | 85% | 2726 fps | 99.9% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 57,043 psi | 89% | 2766 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 55,550 psi | 87% | 2585 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 55,622 psi | 87% | 2687 fps | 99.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 54,578 psi | 86% | 2789 fps | 99.5% |
| Somchem S355 | <<locked>> | 82% | 55,317 psi | 87% | 2703 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 55,187 psi | 86% | 2726 fps | 98.2% |
| Somchem S365 | <<locked>> | 90% | 57,740 psi | 90% | 2795 fps | 100% |
| Somchem S385 | <<locked>> | 92% | 55,666 psi | 87% | 2769 fps | 99.8% |
| Vihtavuori N150 | <<locked>> | 84% | 56,565 psi | 89% | 2677 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 55,724 psi | 87% | 2736 fps | 100% |
| Vihtavuori N165 | <<locked>> | 96% | 54,969 psi | 86% | 2749 fps | 99.7% |
| Vihtavuori N550 | <<locked>> | 86% | 54,723 psi | 86% | 2743 fps | 100% |
| Vihtavuori N555 | <<locked>> | 94% | 57,203 psi | 90% | 2815 fps | 100% |
| Vihtavuori N560 | <<locked>> | 94% | 57,203 psi | 90% | 2890 fps | 98.8% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 56,724 psi | 89% | 2867 fps | 98.9% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 49,545 psi | 78% | 2802 fps | 96.5% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 54,984 psi | 86% | 2697 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 57,232 psi | 90% | 2815 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 98% | 56,072 psi | 88% | 2920 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 55,593 psi | 87% | 2766 fps | 99.4% |
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% | 33,649 psi | 53% | 2359 fps | 97.2% |
| Accurate 4350 | <<locked>> | 80% | 45,150 psi | 71% | 2602 fps | 100% |
| Accurate MAGPRO | <<locked>> | 88% | 45,469 psi | 71% | 2694 fps | 95.8% |
| ADI AR 2208 | <<locked>> | 80% | 53,200 psi | 83% | 2671 fps | 100% |
| ADI AR 2209 | <<locked>> | 80% | 37,739 psi | 59% | 2480 fps | 95.8% |
| ADI AR 2213 | <<locked>> | 86% | 41,104 psi | 64% | 2582 fps | 95.5% |
| ADI AR 2217 | <<locked>> | 94% | 39,552 psi | 62% | 2546 fps | 95.2% |
| ADI AR 2225 | <<locked>> | 92% | 33,185 psi | 52% | 2448 fps | 96% |
| Alliant Reloder-16 | <<locked>> | 80% | 43,337 psi | 68% | 2608 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 80% | 49,908 psi | 78% | 2720 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 37,695 psi | 59% | 2474 fps | 95.9% |
| Alliant Reloder-22 | <<locked>> | 82% | 35,897 psi | 56% | 2474 fps | 95.4% |
| Alliant Reloder-23 | <<locked>> | 80% | 32,387 psi | 51% | 2388 fps | 99.6% |
| Alliant Reloder-25 | <<locked>> | 80% | 28,224 psi | 44% | 2297 fps | 95.4% |
| Alliant Reloder-26 | 67.7 gr | 80% | 35,244 psi | 55% | 2516 fps | 99% |
| Baschieri & Pellagri 109 | <<locked>> | 94% | 52,417 psi | 82% | 2726 fps | 95.5% |
| Bofors RP15 | <<locked>> | 84% | 35,752 psi | 56% | 2470 fps | 95.1% |
| Bofors RP30 | <<locked>> | 92% | 38,203 psi | 60% | 2559 fps | 95.3% |
| Bofors RP5 | <<locked>> | 82% | 35,897 psi | 56% | 2474 fps | 95.4% |
| Bofors RP7 | <<locked>> | 80% | 48,037 psi | 75% | 2605 fps | 99.1% |
| Hodgdon H1000 | <<locked>> | 90% | 37,811 psi | 59% | 2510 fps | 95.2% |
| Hodgdon H414 | <<locked>> | 80% | 46,876 psi | 73% | 2651 fps | 99.3% |
| Hodgdon H4350 | <<locked>> | 80% | 49,371 psi | 77% | 2664 fps | 98.9% |
| Hodgdon H4831 | <<locked>> | 86% | 43,874 psi | 69% | 2589 fps | 95.7% |
| Hodgdon H4831 SC | <<locked>> | 86% | 43,134 psi | 68% | 2575 fps | 95.5% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 40,901 psi | 64% | 2497 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 88% | 35,679 psi | 56% | 2546 fps | 95.8% |
| Hodgdon Superformance | <<locked>> | 80% | 46,282 psi | 73% | 2674 fps | 99.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,760 psi | 44% | 1532 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 43,482 psi | 68% | 2543 fps | 98.4% |
| IMR 4451 Enduron | <<locked>> | 80% | 49,371 psi | 77% | 2631 fps | 99.5% |
| IMR 4831 | <<locked>> | 80% | 42,989 psi | 67% | 2549 fps | 99.9% |
| IMR 4955 Enduron | <<locked>> | 84% | 42,772 psi | 67% | 2533 fps | 95.6% |
| IMR 7828 SSC | 68 gr | 86% | 39,581 psi | 62% | 2562 fps | 95.1% |
| Lovex S065 | <<locked>> | 80% | 46,978 psi | 74% | 2582 fps | 99.8% |
| Lovex S070 | <<locked>> | 80% | 45,324 psi | 71% | 2575 fps | 99.2% |
| Lovex S071 | <<locked>> | 80% | 29,037 psi | 46% | 2241 fps | 95.3% |
| Norma 204 | <<locked>> | 80% | 43,395 psi | 68% | 2575 fps | 97.4% |
| Norma 217 | <<locked>> | 96% | 33,707 psi | 53% | 2493 fps | 95.8% |
| Norma MRP | <<locked>> | 80% | 35,070 psi | 55% | 2480 fps | 96.6% |
| Norma URP | <<locked>> | 80% | 44,469 psi | 70% | 2592 fps | 100% |
| Ramshot Grand | <<locked>> | 86% | 39,102 psi | 61% | 2566 fps | 95.3% |
| Ramshot Hunter | <<locked>> | 80% | 43,207 psi | 68% | 2589 fps | 99.3% |
| Ramshot Magnum | <<locked>> | 86% | 34,867 psi | 55% | 2451 fps | 95.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,369 psi | 44% | 1568 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 53,026 psi | 83% | 2762 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 45,194 psi | 71% | 2625 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 43,366 psi | 68% | 2641 fps | 99.9% |
| ReloadSwiss RS 76 | <<locked>> | 86% | 32,503 psi | 51% | 2457 fps | 95.5% |
| ReloadSwiss RS 80 | <<locked>> | 98% | 44,744 psi | 70% | 2726 fps | 95.8% |
| Rottweil R 903 | <<locked>> | 80% | 52,315 psi | 82% | 2661 fps | 100% |
| Rottweil R 904 | <<locked>> | 80% | 39,204 psi | 61% | 2464 fps | 95.1% |
| Rottweil R 905 | <<locked>> | 80% | 37,115 psi | 58% | 2464 fps | 95.9% |
| Rottweil R 907 | <<locked>> | 80% | 48,037 psi | 75% | 2605 fps | 99.1% |
| Shooters World Long Rifle | <<locked>> | 80% | 46,978 psi | 74% | 2582 fps | 99.8% |
| Shooters World SW4350 | <<locked>> | 80% | 45,324 psi | 71% | 2575 fps | 99.2% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 53,505 psi | 84% | 2713 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 52,243 psi | 82% | 2543 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 45,948 psi | 72% | 2533 fps | 99.2% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 36,782 psi | 58% | 2457 fps | 95.7% |
| Somchem S355 | <<locked>> | 80% | 52,083 psi | 82% | 2657 fps | 100% |
| Somchem S361 | <<locked>> | 82% | 42,395 psi | 66% | 2507 fps | 95.2% |
| Somchem S365 | <<locked>> | 80% | 41,321 psi | 65% | 2549 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 37,594 psi | 59% | 2448 fps | 96.9% |
| Vihtavuori N150 | <<locked>> | 80% | 49,864 psi | 78% | 2582 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 45,730 psi | 72% | 2585 fps | 100% |
| Vihtavuori N165 | <<locked>> | 82% | 34,780 psi | 55% | 2379 fps | 95.6% |
| Vihtavuori N550 | <<locked>> | 80% | 45,150 psi | 71% | 2589 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 36,274 psi | 57% | 2461 fps | 99.5% |
| Vihtavuori N560 | <<locked>> | 86% | 43,424 psi | 68% | 2651 fps | 95.9% |
| Vihtavuori N565 | <<locked>> | 90% | 40,408 psi | 63% | 2579 fps | 95.2% |
| Vihtavuori N568 | <<locked>> | 98% | 46,311 psi | 73% | 2740 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 44,730 psi | 70% | 2549 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 47,065 psi | 74% | 2654 fps | 99.4% |
| Winchester StaBALL HD | 65 gr | 80% | 28,703 psi | 45% | 2402 fps | 99.7% |
| Winchester Supreme 780 | <<locked>> | 82% | 36,767 psi | 58% | 2428 fps | 95.6% |
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 76 powders for .300 Weath. Mag. loaded with the .308 | 200gr | NorthFork Bonded Core. Winchester StaBALL HD delivers the highest muzzle velocity at 2,920 fps; across all powders the maximum-charge window runs from 1,716 fps to 2,920 fps. ADI AR 2217 gives the best case fill at 100 %, and 76 of the 76 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 58–90 %, 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-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, Winchester StaBALL HD, IMR 7828 SSC rank at the top here: for .300 Weath. Mag. with the .308 | 200gr | NorthFork Bonded Core 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.