Load Specifications
Load data in caliber .300 Weath. Mag. with .308 | 200gr | Barnes TSX FB bullet and 81 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 Accurate MAGPRO.
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.
A valid access license is required to use the Personalized Load Calculator.
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% | 55,361 psi | 87% | 2756 fps | 100% |
| Accurate 4350 | <<locked>> | 88% | 57,159 psi | 90% | 2789 fps | 100% |
| Accurate High Country | <<locked>> | 94% | 57,043 psi | 89% | 2904 fps | 99.1% |
| Accurate MAGPRO | <<locked>> | 94% | 54,186 psi | 85% | 2848 fps | 97.7% |
| ADI AR 2208 | <<locked>> | 82% | 55,085 psi | 86% | 2700 fps | 100% |
| ADI AR 2209 | <<locked>> | 92% | 54,389 psi | 85% | 2792 fps | 99.3% |
| ADI AR 2213 | <<locked>> | 96% | 55,695 psi | 87% | 2851 fps | 98.8% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 46,485 psi | 73% | 2690 fps | 97.4% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 41,176 psi | 65% | 2648 fps | 98.9% |
| Alliant Power Pro Varmint | <<locked>> | 92% | 54,592 psi | 86% | 2792 fps | 99.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 56,362 psi | 88% | 2723 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 88% | 54,578 psi | 86% | 2792 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 84% | 55,709 psi | 87% | 2808 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 94% | 57,609 psi | 90% | 2838 fps | 99.6% |
| Alliant Reloder-22 | <<locked>> | 96% | 55,390 psi | 87% | 2844 fps | 99.5% |
| Alliant Reloder-23 | <<locked>> | 98% | 56,492 psi | 89% | 2815 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 52,112 psi | 82% | 2822 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 94% | 56,927 psi | 89% | 2904 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 98% | 57,725 psi | 90% | 2815 fps | 96.6% |
| Bofors RP15 | <<locked>> | 98% | 54,317 psi | 85% | 2828 fps | 99.4% |
| Bofors RP3 | <<locked>> | 82% | 57,203 psi | 90% | 2736 fps | 100% |
| Bofors RP30ᴾ | <<locked>> | 100% | 47,921 psi | 75% | 2756 fps | 98.1% |
| Bofors RP5 | <<locked>> | 96% | 55,390 psi | 87% | 2844 fps | 99.5% |
| Bofors RP7 | <<locked>> | 86% | 56,289 psi | 88% | 2740 fps | 99.8% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 51,300 psi | 80% | 2776 fps | 98.9% |
| Hodgdon H380 | <<locked>> | 82% | 57,363 psi | 90% | 2759 fps | 100% |
| Hodgdon H414 | <<locked>> | 86% | 55,419 psi | 87% | 2792 fps | 99.9% |
| Hodgdon H4350 | <<locked>> | 84% | 54,694 psi | 86% | 2753 fps | 99.5% |
| Hodgdon H4831 | <<locked>> | 94% | 55,709 psi | 87% | 2792 fps | 98.2% |
| Hodgdon H4831 SC | <<locked>> | 94% | 54,752 psi | 86% | 2779 fps | 98.1% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 54,650 psi | 86% | 2717 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 51,140 psi | 80% | 2884 fps | 99.7% |
| Hodgdon Superformance | <<locked>> | 86% | 55,724 psi | 87% | 2828 fps | 99.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,956 psi | 58% | 1713 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 54,302 psi | 85% | 2726 fps | 99.7% |
| IMR 4451 Enduron | <<locked>> | 84% | 54,462 psi | 85% | 2713 fps | 99.9% |
| IMR 4831 | <<locked>> | 90% | 57,551 psi | 90% | 2782 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 57,043 psi | 89% | 2779 fps | 98.6% |
| IMR 7828 SSC | <<locked>> | 98% | 57,276 psi | 90% | 2887 fps | 99.1% |
| Lovex S065 | <<locked>> | 86% | 54,824 psi | 86% | 2710 fps | 100% |
| Lovex S070 | <<locked>> | 88% | 56,217 psi | 88% | 2753 fps | 100% |
| Lovex S071ᴾ | <<locked>> | 100% | 52,736 psi | 83% | 2720 fps | 100% |
| Norma 204 | <<locked>> | 88% | 55,114 psi | 86% | 2779 fps | 99.3% |
| Norma 217ᴾ | <<locked>> | 100% | 36,463 psi | 57% | 2566 fps | 96.9% |
| Norma MRP | <<locked>> | 94% | 55,143 psi | 86% | 2867 fps | 100% |
| Norma URP | <<locked>> | 88% | 55,579 psi | 87% | 2772 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 53,940 psi | 85% | 2844 fps | 98.9% |
| Ramshot Hunter | <<locked>> | 88% | 54,476 psi | 85% | 2779 fps | 100% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 56,072 psi | 88% | 2841 fps | 99.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,710 psi | 59% | 1752 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 57,145 psi | 90% | 2749 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 55,085 psi | 86% | 2792 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 57,305 psi | 90% | 2815 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 55,738 psi | 87% | 2844 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 51,517 psi | 81% | 2884 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 46,122 psi | 72% | 2756 fps | 96.1% |
| Rottweil R 903 | <<locked>> | 84% | 57,305 psi | 90% | 2733 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 55,782 psi | 87% | 2762 fps | 98.8% |
| Rottweil R 905 | <<locked>> | 94% | 56,927 psi | 89% | 2825 fps | 99.6% |
| Rottweil R 907 | <<locked>> | 86% | 56,289 psi | 88% | 2740 fps | 99.8% |
| Shooters World Long Rifle | <<locked>> | 86% | 54,824 psi | 86% | 2710 fps | 100% |
| Shooters World SW4350 | <<locked>> | 88% | 56,217 psi | 88% | 2753 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 55,477 psi | 87% | 2746 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 57,595 psi | 90% | 2615 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 57,566 psi | 90% | 2717 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 56,478 psi | 89% | 2822 fps | 99.6% |
| Somchem S355 | <<locked>> | 84% | 57,043 psi | 89% | 2730 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 57,406 psi | 90% | 2759 fps | 98.4% |
| Somchem S365 | <<locked>> | 90% | 55,956 psi | 88% | 2776 fps | 100% |
| Somchem S385 | <<locked>> | 94% | 57,479 psi | 90% | 2799 fps | 99.9% |
| Vihtavuori N150 | <<locked>> | 84% | 54,752 psi | 86% | 2657 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 57,638 psi | 90% | 2766 fps | 100% |
| Vihtavuori N165 | <<locked>> | 98% | 57,000 psi | 89% | 2779 fps | 99.8% |
| Vihtavuori N550 | <<locked>> | 88% | 56,710 psi | 89% | 2772 fps | 100% |
| Vihtavuori N555 | <<locked>> | 94% | 55,013 psi | 86% | 2789 fps | 100% |
| Vihtavuori N560 | <<locked>> | 94% | 55,143 psi | 86% | 2861 fps | 98.4% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 54,462 psi | 85% | 2835 fps | 98.5% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 57,203 psi | 90% | 2730 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 55,419 psi | 87% | 2792 fps | 99.9% |
| Winchester StaBALL HD | <<locked>> | 98% | 53,751 psi | 84% | 2894 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 57,537 psi | 90% | 2795 fps | 99.6% |
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% | 31,821 psi | 50% | 2320 fps | 96.5% |
| Accurate 4350 | <<locked>> | 80% | 43,221 psi | 68% | 2572 fps | 99.9% |
| Accurate High Country | <<locked>> | 84% | 40,045 psi | 63% | 2598 fps | 95.5% |
| Accurate MAGPRO | 72.9 gr | 88% | 43,642 psi | 68% | 2661 fps | 95.1% |
| ADI AR 2208 | <<locked>> | 80% | 51,793 psi | 81% | 2651 fps | 100% |
| ADI AR 2209 | <<locked>> | 80% | 36,347 psi | 57% | 2451 fps | 95.2% |
| ADI AR 2213 | <<locked>> | 88% | 42,366 psi | 66% | 2612 fps | 95.9% |
| ADI AR 2217 | <<locked>> | 96% | 40,567 psi | 64% | 2572 fps | 95.5% |
| ADI AR 2225 | <<locked>> | 92% | 31,647 psi | 50% | 2408 fps | 95.1% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 36,593 psi | 57% | 2454 fps | 95.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 52,765 psi | 83% | 2674 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 41,785 psi | 65% | 2582 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 80% | 48,254 psi | 76% | 2697 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 36,230 psi | 57% | 2444 fps | 95.3% |
| Alliant Reloder-22 | <<locked>> | 84% | 36,869 psi | 58% | 2500 fps | 95.7% |
| Alliant Reloder-23 | <<locked>> | 80% | 30,806 psi | 48% | 2356 fps | 99.3% |
| Alliant Reloder-25 | <<locked>> | 82% | 28,732 psi | 45% | 2316 fps | 95.7% |
| Alliant Reloder-26 | <<locked>> | 80% | 33,388 psi | 52% | 2480 fps | 98.5% |
| Baschieri & Pellagri 109 | <<locked>> | 94% | 50,952 psi | 80% | 2703 fps | 95% |
| Bofors RP15 | <<locked>> | 86% | 36,535 psi | 57% | 2493 fps | 95.4% |
| Bofors RP3 | <<locked>> | 80% | 53,461 psi | 84% | 2687 fps | 100% |
| Bofors RP30 | <<locked>> | 94% | 39,073 psi | 61% | 2582 fps | 95.6% |
| Bofors RP5 | <<locked>> | 84% | 36,869 psi | 58% | 2500 fps | 95.7% |
| Bofors RP7 | <<locked>> | 80% | 46,514 psi | 73% | 2582 fps | 98.9% |
| Hodgdon H1000 | <<locked>> | 92% | 38,885 psi | 61% | 2536 fps | 95.6% |
| Hodgdon H380 | <<locked>> | 80% | 53,650 psi | 84% | 2707 fps | 100% |
| Hodgdon H414 | <<locked>> | 80% | 45,310 psi | 71% | 2625 fps | 99.1% |
| Hodgdon H4350 | <<locked>> | 80% | 47,935 psi | 75% | 2638 fps | 98.6% |
| Hodgdon H4831 | <<locked>> | 86% | 42,409 psi | 66% | 2562 fps | 95.2% |
| Hodgdon H4831 SC | <<locked>> | 88% | 44,512 psi | 70% | 2602 fps | 95.8% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 39,305 psi | 62% | 2474 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 90% | 36,463 psi | 57% | 2569 fps | 96.1% |
| Hodgdon Superformance | <<locked>> | 80% | 44,512 psi | 70% | 2644 fps | 98.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,557 psi | 43% | 1526 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 42,047 psi | 66% | 2516 fps | 98.1% |
| IMR 4451 Enduron | <<locked>> | 80% | 48,008 psi | 75% | 2608 fps | 99.3% |
| IMR 4831 | <<locked>> | 80% | 41,321 psi | 65% | 2523 fps | 99.8% |
| IMR 4955 Enduron | <<locked>> | 84% | 41,452 psi | 65% | 2510 fps | 95.1% |
| IMR 7828 SSC | <<locked>> | 88% | 40,712 psi | 64% | 2589 fps | 95.4% |
| Lovex S065 | <<locked>> | 80% | 45,426 psi | 71% | 2559 fps | 99.7% |
| Lovex S070 | <<locked>> | 80% | 43,714 psi | 69% | 2549 fps | 98.9% |
| Lovex S071 | <<locked>> | 82% | 29,196 psi | 46% | 2254 fps | 95.4% |
| Norma 204 | <<locked>> | 80% | 41,930 psi | 66% | 2552 fps | 96.9% |
| Norma 217 | <<locked>> | 98% | 34,113 psi | 53% | 2507 fps | 95.9% |
| Norma MRP | 65.1 gr | 80% | 33,489 psi | 52% | 2448 fps | 95.9% |
| Norma URP | <<locked>> | 80% | 42,830 psi | 67% | 2566 fps | 99.9% |
| Ramshot Grand | <<locked>> | 88% | 40,393 psi | 63% | 2595 fps | 95.7% |
| Ramshot Hunter | <<locked>> | 80% | 41,669 psi | 65% | 2559 fps | 99% |
| Ramshot Magnum | <<locked>> | 86% | 33,170 psi | 52% | 2411 fps | 95% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,123 psi | 44% | 1562 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 53,548 psi | 84% | 2697 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 51,285 psi | 80% | 2740 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 43,236 psi | 68% | 2595 fps | 99.9% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 41,655 psi | 65% | 2612 fps | 99.7% |
| ReloadSwiss RS 76 | <<locked>> | 88% | 33,228 psi | 52% | 2484 fps | 95.8% |
| ReloadSwiss RS 80 | <<locked>> | 98% | 42,728 psi | 67% | 2690 fps | 95% |
| Rottweil R 903 | <<locked>> | 80% | 50,430 psi | 79% | 2638 fps | 100% |
| Rottweil R 904 | <<locked>> | 82% | 40,335 psi | 63% | 2490 fps | 95.4% |
| Rottweil R 905 | <<locked>> | 80% | 35,549 psi | 56% | 2431 fps | 95.2% |
| Rottweil R 907 | <<locked>> | 80% | 46,514 psi | 73% | 2582 fps | 98.9% |
| Shooters World Long Rifle | <<locked>> | 80% | 45,426 psi | 71% | 2559 fps | 99.7% |
| Shooters World SW4350 | <<locked>> | 80% | 43,714 psi | 69% | 2549 fps | 98.9% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 51,953 psi | 81% | 2697 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 51,010 psi | 80% | 2526 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 44,411 psi | 70% | 2510 fps | 98.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 35,230 psi | 55% | 2425 fps | 95.1% |
| Somchem S355 | <<locked>> | 80% | 50,386 psi | 79% | 2635 fps | 100% |
| Somchem S361 | <<locked>> | 84% | 43,772 psi | 69% | 2536 fps | 95.6% |
| Somchem S365 | <<locked>> | 80% | 39,566 psi | 62% | 2523 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 35,969 psi | 56% | 2415 fps | 96.3% |
| Vihtavuori N150 | <<locked>> | 80% | 48,269 psi | 76% | 2562 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 44,150 psi | 69% | 2559 fps | 99.9% |
| Vihtavuori N165 | <<locked>> | 84% | 35,694 psi | 56% | 2405 fps | 95.8% |
| Vihtavuori N550 | <<locked>> | 80% | 43,540 psi | 68% | 2562 fps | 99.9% |
| Vihtavuori N555 | <<locked>> | 80% | 34,447 psi | 54% | 2425 fps | 99.2% |
| Vihtavuori N560 | 69.9 gr | 86% | 41,669 psi | 65% | 2618 fps | 95.2% |
| Vihtavuori N565 | <<locked>> | 92% | 41,307 psi | 65% | 2602 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 43,279 psi | 68% | 2526 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 45,310 psi | 71% | 2625 fps | 99.1% |
| Winchester StaBALL HD | <<locked>> | 80% | 27,195 psi | 43% | 2356 fps | 99.2% |
| Winchester Supreme 780 | <<locked>> | 84% | 37,884 psi | 59% | 2457 fps | 95.9% |
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 81 powders for .300 Weath. Mag. loaded with the .308 | 200gr | Barnes TSX FB. Accurate High Country delivers the highest muzzle velocity at 2,904 fps; across all powders the maximum-charge window runs from 1,713 fps to 2,904 fps. ADI AR 2217 gives the best case fill at 100 %, and 81 of the 81 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 57–90 %, 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. Vihtavuori N560, Norma MRP, Accurate MAGPRO rank at the top here: for .300 Weath. Mag. with the .308 | 200gr | Barnes TSX FB 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.