Load Specifications
Load data in caliber .300 Weath. Mag. with .308 | 210gr | Berger LRBTHP bullet and 75 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Winchester StaBALL HD, Vihtavuori N560 and Norma MRP.
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>> | 94% | 55,912 psi | 88% | 2697 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 57,232 psi | 90% | 2720 fps | 100% |
| Accurate MAGPRO | <<locked>> | 92% | 54,476 psi | 85% | 2789 fps | 98.3% |
| ADI AR 2209 | <<locked>> | 90% | 54,317 psi | 85% | 2726 fps | 99.6% |
| ADI AR 2213 | <<locked>> | 94% | 55,695 psi | 87% | 2789 fps | 99.2% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 49,806 psi | 78% | 2694 fps | 98.6% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 44,454 psi | 70% | 2657 fps | 99.8% |
| Alliant Power Pro Varmint | <<locked>> | 90% | 54,592 psi | 86% | 2726 fps | 99.6% |
| Alliant Reloder-16 | <<locked>> | 86% | 54,607 psi | 86% | 2723 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 82% | 55,390 psi | 87% | 2733 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 92% | 57,319 psi | 90% | 2769 fps | 99.8% |
| Alliant Reloder-22 | <<locked>> | 94% | 55,709 psi | 87% | 2785 fps | 99.8% |
| Alliant Reloder-23 | <<locked>> | 96% | 56,898 psi | 89% | 2749 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 56,318 psi | 88% | 2815 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 92% | 57,435 psi | 90% | 2841 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 96% | 57,159 psi | 90% | 2749 fps | 97.1% |
| Bofors RP15 | <<locked>> | 96% | 54,650 psi | 86% | 2769 fps | 99.7% |
| Bofors RP30ᴾ | <<locked>> | 100% | 52,228 psi | 82% | 2762 fps | 99.2% |
| Bofors RP5 | <<locked>> | 94% | 55,709 psi | 87% | 2785 fps | 99.8% |
| Bofors RP7 | <<locked>> | 84% | 55,999 psi | 88% | 2671 fps | 99.9% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 54,868 psi | 86% | 2776 fps | 99.6% |
| Hodgdon H414 | <<locked>> | 84% | 55,216 psi | 87% | 2723 fps | 100% |
| Hodgdon H4350 | <<locked>> | 82% | 54,259 psi | 85% | 2680 fps | 99.7% |
| Hodgdon H4831 | <<locked>> | 92% | 55,622 psi | 87% | 2730 fps | 98.7% |
| Hodgdon H4831 SC | <<locked>> | 92% | 54,491 psi | 85% | 2713 fps | 98.5% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 54,897 psi | 86% | 2651 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 55,071 psi | 86% | 2884 fps | 100% |
| Hodgdon Superformance | <<locked>> | 84% | 55,477 psi | 87% | 2759 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,130 psi | 58% | 1673 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 57,421 psi | 90% | 2707 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 84% | 57,334 psi | 90% | 2690 fps | 100% |
| IMR 4831 | <<locked>> | 88% | 57,435 psi | 90% | 2710 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 56,492 psi | 89% | 2710 fps | 98.9% |
| IMR 7828 SSC | <<locked>> | 96% | 57,392 psi | 90% | 2825 fps | 99.4% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 40,089 psi | 63% | 2566 fps | 96.4% |
| Lovex S065 | <<locked>> | 84% | 54,491 psi | 85% | 2641 fps | 100% |
| Lovex S070 | <<locked>> | 86% | 56,159 psi | 88% | 2687 fps | 100% |
| Lovex S071ᴾ | <<locked>> | 100% | 56,855 psi | 89% | 2707 fps | 100% |
| Norma 204 | <<locked>> | 86% | 54,752 psi | 86% | 2710 fps | 99.5% |
| Norma 217ᴾ | <<locked>> | 100% | 40,190 psi | 63% | 2592 fps | 98.6% |
| Norma MRP | <<locked>> | 92% | 55,651 psi | 87% | 2805 fps | 100% |
| Norma URP | <<locked>> | 86% | 55,608 psi | 87% | 2703 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 54,041 psi | 85% | 2785 fps | 99.3% |
| Ramshot Hunter | <<locked>> | 86% | 54,375 psi | 85% | 2713 fps | 100% |
| Ramshot Magnum | <<locked>> | 98% | 56,521 psi | 89% | 2782 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,145 psi | 60% | 1716 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 57,145 psi | 90% | 2746 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 55,477 psi | 87% | 2772 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 55,695 psi | 87% | 2884 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 50,531 psi | 79% | 2776 fps | 97.8% |
| Rottweil R 903 | <<locked>> | 82% | 57,334 psi | 90% | 2664 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 55,550 psi | 87% | 2700 fps | 99.1% |
| Rottweil R 905 | <<locked>> | 92% | 57,043 psi | 89% | 2762 fps | 99.8% |
| Rottweil R 907 | <<locked>> | 84% | 55,999 psi | 88% | 2671 fps | 99.9% |
| Shooters World Long Rifle | <<locked>> | 84% | 54,491 psi | 85% | 2641 fps | 100% |
| Shooters World SW4350 | <<locked>> | 86% | 56,159 psi | 88% | 2687 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 56,927 psi | 89% | 2536 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 57,217 psi | 90% | 2648 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 56,608 psi | 89% | 2756 fps | 99.8% |
| Somchem S355 | <<locked>> | 82% | 56,898 psi | 89% | 2657 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 56,811 psi | 89% | 2694 fps | 98.8% |
| Somchem S365 | <<locked>> | 88% | 56,086 psi | 88% | 2707 fps | 100% |
| Somchem S385 | <<locked>> | 92% | 57,450 psi | 90% | 2733 fps | 100% |
| Vihtavuori N150 | <<locked>> | 82% | 54,549 psi | 85% | 2585 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 57,334 psi | 90% | 2697 fps | 100% |
| Vihtavuori N165 | <<locked>> | 96% | 57,043 psi | 89% | 2717 fps | 99.9% |
| Vihtavuori N550 | <<locked>> | 86% | 56,536 psi | 89% | 2703 fps | 100% |
| Vihtavuori N555 | <<locked>> | 92% | 55,608 psi | 87% | 2726 fps | 100% |
| Vihtavuori N560 | <<locked>> | 92% | 55,477 psi | 87% | 2802 fps | 98.9% |
| Vihtavuori N565 | <<locked>> | 98% | 55,158 psi | 86% | 2782 fps | 99% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 51,764 psi | 81% | 2779 fps | 97.5% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 56,695 psi | 89% | 2654 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 55,448 psi | 87% | 2726 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 96% | 54,723 psi | 86% | 2831 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 57,464 psi | 90% | 2730 fps | 99.8% |
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% | 34,969 psi | 55% | 2336 fps | 98.1% |
| Accurate 4350 | <<locked>> | 80% | 46,775 psi | 73% | 2569 fps | 100% |
| Accurate MAGPRO | <<locked>> | 84% | 41,075 psi | 64% | 2546 fps | 95% |
| ADI AR 2209 | <<locked>> | 80% | 39,001 psi | 61% | 2454 fps | 96.9% |
| ADI AR 2213 | <<locked>> | 84% | 39,798 psi | 62% | 2500 fps | 95.7% |
| ADI AR 2217 | <<locked>> | 92% | 38,218 psi | 60% | 2464 fps | 95.4% |
| ADI AR 2225 | <<locked>> | 88% | 30,327 psi | 48% | 2320 fps | 95.3% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 39,320 psi | 62% | 2454 fps | 97% |
| Alliant Reloder-16 | <<locked>> | 80% | 44,831 psi | 70% | 2572 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 80% | 51,764 psi | 81% | 2680 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 38,986 psi | 61% | 2448 fps | 96.9% |
| Alliant Reloder-22 | <<locked>> | 80% | 34,838 psi | 55% | 2395 fps | 95.6% |
| Alliant Reloder-23 | <<locked>> | 80% | 33,663 psi | 53% | 2362 fps | 99.9% |
| Alliant Reloder-25 | <<locked>> | 80% | 29,254 psi | 46% | 2280 fps | 96.8% |
| Alliant Reloder-26 | <<locked>> | 80% | 36,695 psi | 57% | 2493 fps | 99.6% |
| Baschieri & Pellagri 109 | <<locked>> | 92% | 50,560 psi | 79% | 2641 fps | 95.6% |
| Bofors RP15 | <<locked>> | 82% | 34,708 psi | 54% | 2392 fps | 95.4% |
| Bofors RP30 | <<locked>> | 90% | 37,275 psi | 58% | 2484 fps | 95.7% |
| Bofors RP5 | <<locked>> | 80% | 34,838 psi | 55% | 2395 fps | 95.6% |
| Bofors RP7 | <<locked>> | 80% | 49,371 psi | 77% | 2569 fps | 99.5% |
| Hodgdon H1000 | <<locked>> | 88% | 36,680 psi | 57% | 2434 fps | 95.5% |
| Hodgdon H414 | <<locked>> | 80% | 48,428 psi | 76% | 2615 fps | 99.7% |
| Hodgdon H4350 | <<locked>> | 80% | 50,865 psi | 80% | 2628 fps | 99.4% |
| Hodgdon H4831 | <<locked>> | 82% | 39,668 psi | 62% | 2448 fps | 95% |
| Hodgdon H4831 SC | <<locked>> | 84% | 41,727 psi | 65% | 2490 fps | 95.7% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 42,351 psi | 66% | 2464 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 86% | 34,722 psi | 54% | 2470 fps | 96.2% |
| Hodgdon Superformance | <<locked>> | 80% | 47,848 psi | 75% | 2641 fps | 99.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,934 psi | 44% | 1496 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 44,773 psi | 70% | 2507 fps | 99% |
| IMR 4451 Enduron | <<locked>> | 80% | 50,691 psi | 79% | 2592 fps | 99.8% |
| IMR 4831 | <<locked>> | 80% | 44,454 psi | 70% | 2516 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 38,870 psi | 61% | 2398 fps | 95% |
| IMR 7828 SSC | <<locked>> | 84% | 38,363 psi | 60% | 2480 fps | 95.3% |
| IMR 8133 Enduron | <<locked>> | 98% | 37,434 psi | 59% | 2507 fps | 95.4% |
| Lovex S065 | <<locked>> | 80% | 48,298 psi | 76% | 2546 fps | 100% |
| Lovex S070 | <<locked>> | 80% | 46,673 psi | 73% | 2539 fps | 99.6% |
| Lovex S071 | <<locked>> | 80% | 30,168 psi | 47% | 2221 fps | 96.5% |
| Norma 204 | <<locked>> | 80% | 44,846 psi | 70% | 2546 fps | 98.2% |
| Norma 217 | <<locked>> | 92% | 30,850 psi | 48% | 2365 fps | 95% |
| Norma MRP | 65.3 gr | 80% | 36,535 psi | 57% | 2461 fps | 97.6% |
| Norma URP | <<locked>> | 80% | 45,934 psi | 72% | 2556 fps | 100% |
| Ramshot Grand | <<locked>> | 84% | 37,985 psi | 60% | 2487 fps | 95.6% |
| Ramshot Hunter | <<locked>> | 80% | 44,701 psi | 70% | 2556 fps | 99.7% |
| Ramshot Magnum | <<locked>> | 82% | 31,531 psi | 49% | 2316 fps | 95% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,572 psi | 45% | 1532 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 46,659 psi | 73% | 2589 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 44,802 psi | 70% | 2605 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 84% | 31,560 psi | 49% | 2385 fps | 95.8% |
| ReloadSwiss RS 80 | <<locked>> | 96% | 43,511 psi | 68% | 2648 fps | 96% |
| Rottweil R 903 | <<locked>> | 80% | 53,911 psi | 84% | 2618 fps | 100% |
| Rottweil R 904 | <<locked>> | 80% | 40,437 psi | 63% | 2434 fps | 96.1% |
| Rottweil R 905 | <<locked>> | 80% | 38,450 psi | 60% | 2438 fps | 96.9% |
| Rottweil R 907 | <<locked>> | 80% | 49,371 psi | 77% | 2569 fps | 99.5% |
| Shooters World Long Rifle | <<locked>> | 80% | 48,298 psi | 76% | 2546 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 46,673 psi | 73% | 2539 fps | 99.6% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 53,519 psi | 84% | 2497 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 47,253 psi | 74% | 2500 fps | 99.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 38,130 psi | 60% | 2431 fps | 96.8% |
| Somchem S355 | <<locked>> | 80% | 53,563 psi | 84% | 2615 fps | 100% |
| Somchem S361 | <<locked>> | 80% | 40,959 psi | 64% | 2425 fps | 95.4% |
| Somchem S365 | <<locked>> | 80% | 42,931 psi | 67% | 2513 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 38,928 psi | 61% | 2421 fps | 97.8% |
| Vihtavuori N150 | <<locked>> | 80% | 51,300 psi | 80% | 2543 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 47,210 psi | 74% | 2549 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 33,692 psi | 53% | 2303 fps | 95.8% |
| Vihtavuori N550 | <<locked>> | 80% | 46,601 psi | 73% | 2552 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 37,695 psi | 59% | 2431 fps | 99.9% |
| Vihtavuori N560 | 66.9 gr | 82% | 39,291 psi | 62% | 2510 fps | 95.1% |
| Vihtavuori N565 | <<locked>> | 88% | 39,465 psi | 62% | 2503 fps | 95.5% |
| Vihtavuori N568 | <<locked>> | 96% | 44,947 psi | 70% | 2657 fps | 95.8% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 46,267 psi | 73% | 2513 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 48,428 psi | 76% | 2615 fps | 99.7% |
| Winchester StaBALL HD | 64.6 gr | 80% | 29,907 psi | 47% | 2385 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 35,578 psi | 56% | 2349 fps | 95.8% |
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 75 powders for .300 Weath. Mag. loaded with the .308 | 210gr | Berger LRBTHP. Hodgdon Retumbo delivers the highest muzzle velocity at 2,884 fps; across all powders the maximum-charge window runs from 1,673 fps to 2,884 fps. ADI AR 2217 gives the best case fill at 100 %, and 75 of the 75 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 210.0 gr projectile in 0.308" calls for a 1:11.5 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. Winchester StaBALL HD, Vihtavuori N560, Norma MRP rank at the top here: for .300 Weath. Mag. with the .308 | 210gr | Berger LRBTHP 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.