Load Specifications
Load data in caliber .300 Weath. Mag. with .308 | 201gr | RWS UNI Classic bullet and 74 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 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.
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Max Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 94% | 56,231 psi | 88% | 2766 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 57,638 psi | 90% | 2795 fps | 100% |
| Accurate MAGPRO | <<locked>> | 92% | 54,824 psi | 86% | 2861 fps | 98.1% |
| ADI AR 2209 | <<locked>> | 90% | 54,491 psi | 85% | 2795 fps | 99.5% |
| ADI AR 2213 | <<locked>> | 94% | 55,956 psi | 88% | 2858 fps | 99.1% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 50,270 psi | 79% | 2762 fps | 98.5% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 44,802 psi | 70% | 2726 fps | 99.7% |
| Alliant Reloder-16 | <<locked>> | 86% | 54,868 psi | 86% | 2795 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 82% | 55,825 psi | 87% | 2805 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 92% | 57,595 psi | 90% | 2841 fps | 99.8% |
| Alliant Reloder-22 | <<locked>> | 94% | 56,043 psi | 88% | 2854 fps | 99.7% |
| Alliant Reloder-23 | <<locked>> | 96% | 57,276 psi | 90% | 2822 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 56,565 psi | 89% | 2884 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 90% | 53,780 psi | 84% | 2858 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 96% | 57,435 psi | 90% | 2818 fps | 97% |
| Bofors RP15 | <<locked>> | 96% | 55,158 psi | 86% | 2841 fps | 99.6% |
| Bofors RP30ᴾ | <<locked>> | 100% | 52,475 psi | 82% | 2828 fps | 99% |
| Bofors RP5 | <<locked>> | 94% | 56,043 psi | 88% | 2854 fps | 99.7% |
| Bofors RP7 | <<locked>> | 84% | 56,086 psi | 88% | 2740 fps | 99.9% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 55,245 psi | 87% | 2848 fps | 99.6% |
| Hodgdon H414 | <<locked>> | 84% | 55,361 psi | 87% | 2792 fps | 100% |
| Hodgdon H4350 | <<locked>> | 82% | 54,346 psi | 85% | 2749 fps | 99.6% |
| Hodgdon H4831 | <<locked>> | 92% | 55,767 psi | 87% | 2795 fps | 98.5% |
| Hodgdon H4831 SC | <<locked>> | 92% | 54,868 psi | 86% | 2782 fps | 98.4% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 55,143 psi | 86% | 2723 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 55,506 psi | 87% | 2959 fps | 100% |
| Hodgdon Superformance | <<locked>> | 84% | 55,883 psi | 88% | 2831 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,246 psi | 58% | 1729 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 57,696 psi | 90% | 2782 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 84% | 57,406 psi | 90% | 2762 fps | 100% |
| IMR 4831 | <<locked>> | 88% | 57,696 psi | 90% | 2782 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 56,724 psi | 89% | 2779 fps | 98.8% |
| IMR 7828 SSC | <<locked>> | 96% | 57,566 psi | 90% | 2894 fps | 99.3% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 40,379 psi | 63% | 2628 fps | 96.2% |
| Lovex S065 | <<locked>> | 84% | 54,839 psi | 86% | 2710 fps | 100% |
| Lovex S070 | <<locked>> | 86% | 56,362 psi | 88% | 2759 fps | 100% |
| Lovex S071ᴾ | <<locked>> | 100% | 57,188 psi | 90% | 2779 fps | 100% |
| Norma 204 | <<locked>> | 86% | 55,216 psi | 87% | 2785 fps | 99.5% |
| Norma 217ᴾ | <<locked>> | 100% | 40,437 psi | 63% | 2654 fps | 98.4% |
| Norma MRP | <<locked>> | 92% | 55,927 psi | 88% | 2874 fps | 100% |
| Norma URP | <<locked>> | 86% | 55,811 psi | 87% | 2776 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 54,462 psi | 85% | 2854 fps | 99.2% |
| Ramshot Hunter | <<locked>> | 86% | 54,781 psi | 86% | 2785 fps | 100% |
| Ramshot Magnum | <<locked>> | 98% | 56,797 psi | 89% | 2851 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,043 psi | 60% | 1768 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 57,537 psi | 90% | 2818 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 55,753 psi | 87% | 2844 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 56,173 psi | 88% | 2956 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 50,981 psi | 80% | 2844 fps | 97.7% |
| Rottweil R 903 | <<locked>> | 82% | 57,551 psi | 90% | 2740 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 55,753 psi | 87% | 2769 fps | 99% |
| Rottweil R 905 | <<locked>> | 92% | 57,334 psi | 90% | 2831 fps | 99.8% |
| Rottweil R 907 | <<locked>> | 84% | 56,086 psi | 88% | 2740 fps | 99.9% |
| Shooters World Long Rifle | <<locked>> | 84% | 54,839 psi | 86% | 2710 fps | 100% |
| Shooters World SW4350 | <<locked>> | 86% | 56,362 psi | 88% | 2759 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 57,130 psi | 90% | 2608 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 57,363 psi | 90% | 2717 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 56,884 psi | 89% | 2828 fps | 99.7% |
| Somchem S355 | <<locked>> | 82% | 57,188 psi | 90% | 2730 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 57,261 psi | 90% | 2762 fps | 98.7% |
| Somchem S365 | <<locked>> | 88% | 56,362 psi | 88% | 2779 fps | 100% |
| Somchem S385 | <<locked>> | 90% | 54,099 psi | 85% | 2749 fps | 99.8% |
| Vihtavuori N150 | <<locked>> | 82% | 54,781 psi | 86% | 2657 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 57,682 psi | 90% | 2769 fps | 100% |
| Vihtavuori N165 | <<locked>> | 96% | 57,290 psi | 90% | 2785 fps | 99.9% |
| Vihtavuori N550 | <<locked>> | 86% | 56,797 psi | 89% | 2772 fps | 100% |
| Vihtavuori N555 | <<locked>> | 92% | 56,014 psi | 88% | 2802 fps | 100% |
| Vihtavuori N560 | <<locked>> | 92% | 55,724 psi | 87% | 2871 fps | 98.7% |
| Vihtavuori N565 | <<locked>> | 98% | 55,593 psi | 87% | 2854 fps | 98.9% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 52,141 psi | 82% | 2848 fps | 97.4% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 57,116 psi | 90% | 2726 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 55,593 psi | 87% | 2795 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 96% | 55,056 psi | 86% | 2904 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 57,682 psi | 90% | 2799 fps | 99.7% |
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 3100 | <<locked>> | 80% | 35,186 psi | 55% | 2395 fps | 97.9% |
| Accurate 4350 | <<locked>> | 80% | 47,036 psi | 74% | 2635 fps | 100% |
| Accurate MAGPRO | 74.3 gr | 86% | 44,382 psi | 70% | 2674 fps | 95.7% |
| ADI AR 2209 | <<locked>> | 80% | 39,073 psi | 61% | 2513 fps | 96.6% |
| ADI AR 2213 | <<locked>> | 84% | 40,001 psi | 63% | 2562 fps | 95.5% |
| ADI AR 2217 | <<locked>> | 92% | 38,450 psi | 60% | 2526 fps | 95.1% |
| ADI AR 2225 | <<locked>> | 90% | 32,416 psi | 51% | 2431 fps | 96% |
| Alliant Reloder-16 | <<locked>> | 80% | 44,991 psi | 71% | 2641 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 80% | 52,025 psi | 82% | 2753 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 39,189 psi | 61% | 2510 fps | 96.7% |
| Alliant Reloder-22 | <<locked>> | 80% | 35,027 psi | 55% | 2454 fps | 95.3% |
| Alliant Reloder-23 | <<locked>> | 80% | 33,808 psi | 53% | 2421 fps | 99.9% |
| Alliant Reloder-25 | <<locked>> | 80% | 29,341 psi | 46% | 2333 fps | 96.4% |
| Alliant Reloder-26 | <<locked>> | 80% | 37,014 psi | 58% | 2556 fps | 99.5% |
| Baschieri & Pellagri 109 | <<locked>> | 92% | 50,836 psi | 80% | 2707 fps | 95.4% |
| Bofors RP15 | <<locked>> | 82% | 34,896 psi | 55% | 2451 fps | 95% |
| Bofors RP30 | <<locked>> | 90% | 37,405 psi | 59% | 2543 fps | 95.3% |
| Bofors RP5 | <<locked>> | 80% | 35,027 psi | 55% | 2454 fps | 95.3% |
| Bofors RP7 | <<locked>> | 80% | 49,516 psi | 78% | 2638 fps | 99.4% |
| Hodgdon H1000 | <<locked>> | 88% | 36,825 psi | 58% | 2490 fps | 95.2% |
| Hodgdon H414 | <<locked>> | 80% | 48,588 psi | 76% | 2684 fps | 99.6% |
| Hodgdon H4350 | <<locked>> | 80% | 51,068 psi | 80% | 2694 fps | 99.3% |
| Hodgdon H4831 | <<locked>> | 84% | 42,612 psi | 67% | 2569 fps | 95.7% |
| Hodgdon H4831 SC | <<locked>> | 84% | 41,901 psi | 66% | 2552 fps | 95.4% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 42,540 psi | 67% | 2526 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 86% | 34,940 psi | 55% | 2530 fps | 95.8% |
| Hodgdon Superformance | <<locked>> | 80% | 48,254 psi | 76% | 2710 fps | 99.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,876 psi | 44% | 1542 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 44,875 psi | 70% | 2572 fps | 98.9% |
| IMR 4451 Enduron | <<locked>> | 80% | 50,778 psi | 80% | 2657 fps | 99.7% |
| IMR 4831 | <<locked>> | 80% | 44,730 psi | 70% | 2582 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 82% | 41,655 psi | 65% | 2513 fps | 95.6% |
| IMR 7828 SSC | <<locked>> | 84% | 38,421 psi | 60% | 2539 fps | 95% |
| IMR 8133 Enduron | <<locked>> | 98% | 37,840 psi | 59% | 2572 fps | 95.2% |
| Lovex S065 | <<locked>> | 80% | 48,457 psi | 76% | 2612 fps | 100% |
| Lovex S070 | <<locked>> | 80% | 46,804 psi | 73% | 2605 fps | 99.5% |
| Lovex S071 | <<locked>> | 80% | 30,400 psi | 48% | 2277 fps | 96.2% |
| Norma 204 | <<locked>> | 80% | 44,947 psi | 70% | 2608 fps | 98% |
| Norma 217 | <<locked>> | 94% | 33,185 psi | 52% | 2477 fps | 95.8% |
| Norma MRP | <<locked>> | 80% | 36,622 psi | 57% | 2520 fps | 97.4% |
| Norma URP | <<locked>> | 80% | 46,064 psi | 72% | 2621 fps | 100% |
| Ramshot Grand | <<locked>> | 84% | 38,058 psi | 60% | 2546 fps | 95.3% |
| Ramshot Hunter | <<locked>> | 80% | 44,817 psi | 70% | 2621 fps | 99.6% |
| Ramshot Magnum | <<locked>> | 84% | 33,924 psi | 53% | 2431 fps | 95.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,485 psi | 45% | 1578 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 46,905 psi | 74% | 2657 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 45,005 psi | 71% | 2671 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 84% | 31,676 psi | 50% | 2438 fps | 95.4% |
| ReloadSwiss RS 80 | <<locked>> | 96% | 43,903 psi | 69% | 2713 fps | 95.8% |
| Rottweil R 903 | <<locked>> | 80% | 54,027 psi | 85% | 2687 fps | 100% |
| Rottweil R 904 | <<locked>> | 80% | 40,567 psi | 64% | 2497 fps | 95.9% |
| Rottweil R 905 | <<locked>> | 80% | 38,537 psi | 60% | 2497 fps | 96.7% |
| Rottweil R 907 | <<locked>> | 80% | 49,516 psi | 78% | 2638 fps | 99.4% |
| Shooters World Long Rifle | <<locked>> | 80% | 48,457 psi | 76% | 2612 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 46,804 psi | 73% | 2605 fps | 99.5% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 53,853 psi | 84% | 2566 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 47,311 psi | 74% | 2562 fps | 99.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 38,203 psi | 60% | 2493 fps | 96.5% |
| Somchem S355 | <<locked>> | 80% | 53,722 psi | 84% | 2684 fps | 100% |
| Somchem S361 | <<locked>> | 80% | 41,089 psi | 64% | 2487 fps | 95.2% |
| Somchem S365 | <<locked>> | 80% | 43,062 psi | 67% | 2579 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 39,088 psi | 61% | 2480 fps | 97.6% |
| Vihtavuori N150 | <<locked>> | 80% | 51,416 psi | 81% | 2608 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 47,442 psi | 74% | 2615 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 33,910 psi | 53% | 2362 fps | 95.5% |
| Vihtavuori N550 | <<locked>> | 80% | 46,775 psi | 73% | 2618 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 37,884 psi | 59% | 2493 fps | 99.8% |
| Vihtavuori N560 | 71.2 gr | 84% | 42,250 psi | 66% | 2628 fps | 95.8% |
| Vihtavuori N565 | <<locked>> | 88% | 39,566 psi | 62% | 2562 fps | 95.2% |
| Vihtavuori N568 | <<locked>> | 96% | 45,266 psi | 71% | 2723 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 46,412 psi | 73% | 2575 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 48,776 psi | 76% | 2687 fps | 99.6% |
| Winchester StaBALL HD | 67.1 gr | 80% | 29,994 psi | 47% | 2441 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 35,708 psi | 56% | 2408 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 74 powders for .300 Weath. Mag. loaded with the .308 | 201gr | RWS UNI Classic. Hodgdon Retumbo delivers the highest muzzle velocity at 2,959 fps; across all powders the maximum-charge window runs from 1,729 fps to 2,959 fps. ADI AR 2217 gives the best case fill at 100 %, and 74 of the 74 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 201.0 gr projectile in 0.308" calls for a 1:12.5 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, Accurate MAGPRO rank at the top here: for .300 Weath. Mag. with the .308 | 201gr | RWS UNI Classic 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.