Load Specifications
Load data in caliber .300 Weath. Mag. with .308 | 200gr | Nosler AccuBond bullet and 78 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-22, Accurate MAGPRO and Accurate High Country.
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 3100 | <<locked>> | 96% | 57,464 psi | 90% | 2779 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 55,390 psi | 87% | 2762 fps | 100% |
| Accurate High Country | <<locked>> | 92% | 55,100 psi | 86% | 2871 fps | 98.9% |
| Accurate MAGPRO | <<locked>> | 94% | 56,014 psi | 88% | 2874 fps | 98.1% |
| ADI AR 2208 | <<locked>> | 82% | 56,376 psi | 88% | 2717 fps | 100% |
| ADI AR 2209 | <<locked>> | 92% | 55,999 psi | 88% | 2815 fps | 99.5% |
| ADI AR 2213 | <<locked>> | 96% | 57,566 psi | 90% | 2881 fps | 99.1% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 48,037 psi | 75% | 2717 fps | 97.8% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 42,743 psi | 67% | 2680 fps | 99.2% |
| Alliant Power Pro Varmint | <<locked>> | 92% | 56,231 psi | 88% | 2812 fps | 99.5% |
| Alliant Reloder-16 | <<locked>> | 88% | 56,057 psi | 88% | 2812 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 84% | 57,305 psi | 90% | 2825 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 92% | 55,564 psi | 87% | 2805 fps | 99.5% |
| Alliant Reloder-22 | <<locked>> | 96% | 57,435 psi | 90% | 2874 fps | 99.7% |
| Alliant Reloder-23 | <<locked>> | 96% | 54,795 psi | 86% | 2789 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 53,867 psi | 84% | 2844 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 92% | 54,969 psi | 86% | 2874 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 96% | 55,564 psi | 87% | 2779 fps | 96.2% |
| Bofors RP15 | <<locked>> | 98% | 56,333 psi | 88% | 2858 fps | 99.6% |
| Bofors RP30ᴾ | <<locked>> | 100% | 50,053 psi | 78% | 2789 fps | 98.5% |
| Bofors RP5 | <<locked>> | 96% | 57,435 psi | 90% | 2874 fps | 99.7% |
| Bofors RP7 | <<locked>> | 86% | 57,725 psi | 90% | 2759 fps | 99.9% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 52,852 psi | 83% | 2802 fps | 99.1% |
| Hodgdon H414 | <<locked>> | 86% | 56,956 psi | 89% | 2812 fps | 100% |
| Hodgdon H4350 | <<locked>> | 84% | 56,086 psi | 88% | 2769 fps | 99.6% |
| Hodgdon H4831 | <<locked>> | 94% | 57,305 psi | 90% | 2815 fps | 98.5% |
| Hodgdon H4831 SC | <<locked>> | 94% | 56,391 psi | 88% | 2802 fps | 98.4% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 56,449 psi | 88% | 2740 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 52,881 psi | 83% | 2913 fps | 99.9% |
| Hodgdon Superformance | <<locked>> | 86% | 57,464 psi | 90% | 2851 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,115 psi | 58% | 1716 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 55,854 psi | 88% | 2749 fps | 99.8% |
| IMR 4451 Enduron | <<locked>> | 84% | 55,709 psi | 87% | 2730 fps | 99.9% |
| IMR 4831 | <<locked>> | 88% | 55,666 psi | 87% | 2753 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 54,911 psi | 86% | 2746 fps | 98.3% |
| IMR 7828 SSC | <<locked>> | 96% | 55,259 psi | 87% | 2854 fps | 98.9% |
| Lovex S065 | <<locked>> | 86% | 56,318 psi | 88% | 2730 fps | 100% |
| Lovex S070 | <<locked>> | 86% | 54,404 psi | 85% | 2726 fps | 99.9% |
| Lovex S071ᴾ | <<locked>> | 100% | 54,824 psi | 86% | 2746 fps | 100% |
| Norma 204 | <<locked>> | 88% | 56,739 psi | 89% | 2802 fps | 99.5% |
| Norma 217ᴾ | <<locked>> | 100% | 38,392 psi | 60% | 2605 fps | 97.6% |
| Norma MRP | <<locked>> | 94% | 57,290 psi | 90% | 2894 fps | 100% |
| Norma URP | <<locked>> | 88% | 57,363 psi | 90% | 2795 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 55,999 psi | 88% | 2877 fps | 99.2% |
| Ramshot Hunter | <<locked>> | 88% | 56,144 psi | 88% | 2802 fps | 100% |
| Ramshot Magnum | <<locked>> | 98% | 54,085 psi | 85% | 2812 fps | 99.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,927 psi | 59% | 1755 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 57,000 psi | 89% | 2815 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 55,259 psi | 87% | 2785 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 57,522 psi | 90% | 2867 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 53,505 psi | 84% | 2913 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 48,211 psi | 76% | 2792 fps | 96.7% |
| Rottweil R 903 | <<locked>> | 82% | 55,521 psi | 87% | 2707 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 57,348 psi | 90% | 2785 fps | 99% |
| Rottweil R 905 | <<locked>> | 92% | 54,940 psi | 86% | 2792 fps | 99.5% |
| Rottweil R 907 | <<locked>> | 86% | 57,725 psi | 90% | 2759 fps | 99.9% |
| Shooters World Long Rifle | <<locked>> | 86% | 56,318 psi | 88% | 2730 fps | 100% |
| Shooters World SW4350 | <<locked>> | 86% | 54,404 psi | 85% | 2726 fps | 99.9% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 56,971 psi | 89% | 2762 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 55,448 psi | 87% | 2582 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 55,564 psi | 87% | 2687 fps | 99.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 54,491 psi | 85% | 2789 fps | 99.4% |
| Somchem S355 | <<locked>> | 82% | 55,216 psi | 87% | 2700 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 55,143 psi | 86% | 2726 fps | 98.1% |
| Somchem S365 | <<locked>> | 90% | 57,653 psi | 90% | 2795 fps | 100% |
| Somchem S385 | <<locked>> | 92% | 55,593 psi | 87% | 2769 fps | 99.8% |
| Vihtavuori N150 | <<locked>> | 84% | 56,521 psi | 89% | 2677 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 55,637 psi | 87% | 2736 fps | 100% |
| Vihtavuori N165 | <<locked>> | 96% | 54,911 psi | 86% | 2746 fps | 99.7% |
| Vihtavuori N550 | <<locked>> | 86% | 54,636 psi | 86% | 2743 fps | 100% |
| Vihtavuori N555 | <<locked>> | 94% | 57,130 psi | 90% | 2815 fps | 100% |
| Vihtavuori N560 | <<locked>> | 94% | 57,116 psi | 90% | 2890 fps | 98.7% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 56,652 psi | 89% | 2867 fps | 98.8% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 49,501 psi | 78% | 2802 fps | 96.5% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 54,911 psi | 86% | 2697 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 57,145 psi | 90% | 2815 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 98% | 55,956 psi | 88% | 2920 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 55,303 psi | 87% | 2762 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% | 33,736 psi | 53% | 2362 fps | 97.3% |
| Accurate 4350 | <<locked>> | 80% | 45,266 psi | 71% | 2602 fps | 100% |
| Accurate High Country | 67.2 gr | 82% | 38,914 psi | 61% | 2569 fps | 95.1% |
| Accurate MAGPRO | 73.5 gr | 88% | 45,397 psi | 71% | 2690 fps | 95.7% |
| ADI AR 2208 | <<locked>> | 80% | 53,098 psi | 83% | 2671 fps | 100% |
| ADI AR 2209 | <<locked>> | 80% | 37,666 psi | 59% | 2477 fps | 95.8% |
| ADI AR 2213 | <<locked>> | 86% | 41,031 psi | 64% | 2582 fps | 95.5% |
| ADI AR 2217 | <<locked>> | 94% | 39,494 psi | 62% | 2546 fps | 95.2% |
| ADI AR 2225 | <<locked>> | 92% | 33,127 psi | 52% | 2448 fps | 96% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 38,116 psi | 60% | 2484 fps | 96% |
| Alliant Reloder-16 | <<locked>> | 80% | 43,236 psi | 68% | 2608 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 80% | 49,821 psi | 78% | 2720 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 37,768 psi | 59% | 2477 fps | 95.9% |
| Alliant Reloder-22 | 65.1 gr | 82% | 35,824 psi | 56% | 2474 fps | 95.3% |
| Alliant Reloder-23 | <<locked>> | 80% | 32,314 psi | 51% | 2388 fps | 99.6% |
| Alliant Reloder-25 | <<locked>> | 80% | 28,181 psi | 44% | 2293 fps | 95.4% |
| Alliant Reloder-26 | <<locked>> | 80% | 35,172 psi | 55% | 2516 fps | 99% |
| Baschieri & Pellagri 109 | <<locked>> | 94% | 52,373 psi | 82% | 2726 fps | 95.4% |
| Bofors RP15 | <<locked>> | 84% | 35,665 psi | 56% | 2467 fps | 95.1% |
| Bofors RP30 | <<locked>> | 92% | 38,130 psi | 60% | 2559 fps | 95.3% |
| Bofors RP5 | <<locked>> | 82% | 35,824 psi | 56% | 2474 fps | 95.3% |
| Bofors RP7 | <<locked>> | 80% | 47,964 psi | 75% | 2605 fps | 99.1% |
| Hodgdon H1000 | <<locked>> | 90% | 37,753 psi | 59% | 2510 fps | 95.2% |
| Hodgdon H414 | <<locked>> | 80% | 46,789 psi | 73% | 2648 fps | 99.3% |
| Hodgdon H4350 | <<locked>> | 80% | 49,284 psi | 77% | 2661 fps | 98.9% |
| Hodgdon H4831 | <<locked>> | 86% | 43,801 psi | 69% | 2585 fps | 95.7% |
| Hodgdon H4831 SC | <<locked>> | 86% | 43,062 psi | 67% | 2572 fps | 95.5% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 40,857 psi | 64% | 2497 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 88% | 35,621 psi | 56% | 2543 fps | 95.8% |
| Hodgdon Superformance | <<locked>> | 80% | 46,209 psi | 72% | 2674 fps | 99.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,804 psi | 44% | 1532 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 43,395 psi | 68% | 2539 fps | 98.4% |
| IMR 4451 Enduron | <<locked>> | 80% | 49,284 psi | 77% | 2628 fps | 99.5% |
| IMR 4831 | <<locked>> | 80% | 42,917 psi | 67% | 2549 fps | 99.9% |
| IMR 4955 Enduron | <<locked>> | 84% | 42,699 psi | 67% | 2530 fps | 95.6% |
| IMR 7828 SSC | <<locked>> | 86% | 39,508 psi | 62% | 2559 fps | 95% |
| Lovex S065 | <<locked>> | 80% | 46,891 psi | 73% | 2582 fps | 99.8% |
| Lovex S070 | <<locked>> | 80% | 45,252 psi | 71% | 2572 fps | 99.2% |
| Lovex S071 | <<locked>> | 80% | 28,993 psi | 45% | 2241 fps | 95.3% |
| Norma 204 | <<locked>> | 80% | 43,308 psi | 68% | 2575 fps | 97.3% |
| Norma 217 | <<locked>> | 96% | 33,663 psi | 53% | 2490 fps | 95.7% |
| Norma MRP | <<locked>> | 80% | 35,012 psi | 55% | 2480 fps | 96.5% |
| Norma URP | <<locked>> | 80% | 44,367 psi | 70% | 2589 fps | 100% |
| Ramshot Grand | <<locked>> | 86% | 39,044 psi | 61% | 2562 fps | 95.3% |
| Ramshot Hunter | <<locked>> | 80% | 43,120 psi | 68% | 2585 fps | 99.3% |
| Ramshot Magnum | <<locked>> | 86% | 34,809 psi | 55% | 2448 fps | 95.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,413 psi | 45% | 1568 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 52,924 psi | 83% | 2759 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 45,107 psi | 71% | 2625 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 43,294 psi | 68% | 2638 fps | 99.9% |
| ReloadSwiss RS 76 | <<locked>> | 86% | 32,460 psi | 51% | 2457 fps | 95.5% |
| ReloadSwiss RS 80 | <<locked>> | 98% | 44,715 psi | 70% | 2726 fps | 95.7% |
| Rottweil R 903 | <<locked>> | 80% | 52,214 psi | 82% | 2661 fps | 100% |
| Rottweil R 904 | <<locked>> | 80% | 39,131 psi | 61% | 2464 fps | 95.1% |
| Rottweil R 905 | <<locked>> | 80% | 37,028 psi | 58% | 2461 fps | 95.9% |
| Rottweil R 907 | <<locked>> | 80% | 47,964 psi | 75% | 2605 fps | 99.1% |
| Shooters World Long Rifle | <<locked>> | 80% | 46,891 psi | 73% | 2582 fps | 99.8% |
| Shooters World SW4350 | <<locked>> | 80% | 45,252 psi | 71% | 2572 fps | 99.2% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 53,403 psi | 84% | 2713 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 52,141 psi | 82% | 2539 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 45,861 psi | 72% | 2530 fps | 99.2% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 36,724 psi | 58% | 2457 fps | 95.7% |
| Somchem S355 | <<locked>> | 80% | 51,982 psi | 81% | 2654 fps | 100% |
| Somchem S361 | <<locked>> | 82% | 42,337 psi | 66% | 2507 fps | 95.2% |
| Somchem S365 | <<locked>> | 80% | 41,249 psi | 65% | 2549 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 37,521 psi | 59% | 2444 fps | 96.9% |
| Vihtavuori N150 | <<locked>> | 80% | 49,792 psi | 78% | 2582 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 45,832 psi | 72% | 2585 fps | 100% |
| Vihtavuori N165 | <<locked>> | 82% | 34,708 psi | 54% | 2379 fps | 95.5% |
| Vihtavuori N550 | <<locked>> | 80% | 45,063 psi | 71% | 2589 fps | 99.9% |
| Vihtavuori N555 | <<locked>> | 80% | 36,230 psi | 57% | 2457 fps | 99.5% |
| Vihtavuori N560 | <<locked>> | 86% | 43,352 psi | 68% | 2651 fps | 95.8% |
| Vihtavuori N565 | <<locked>> | 90% | 40,350 psi | 63% | 2575 fps | 95.2% |
| Vihtavuori N568 | <<locked>> | 98% | 46,238 psi | 72% | 2740 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 44,657 psi | 70% | 2546 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 46,978 psi | 74% | 2651 fps | 99.3% |
| Winchester StaBALL HD | <<locked>> | 80% | 28,660 psi | 45% | 2402 fps | 99.7% |
| Winchester Supreme 780 | <<locked>> | 82% | 36,695 psi | 57% | 2428 fps | 95.5% |
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 78 powders for .300 Weath. Mag. loaded with the .308 | 200gr | Nosler AccuBond. 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 78 of the 78 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 1:11.0 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-22, Accurate MAGPRO, Accurate High Country rank at the top here: for .300 Weath. Mag. with the .308 | 200gr | Nosler AccuBond 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.