Load Specifications
Load data in caliber .300 Win. Mag. with .308 | 240gr | Woodleigh PP SN bullet and 74 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Accurate MAGPRO, Hodgdon Retumbo and Alliant Reloder-26.
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% | 56,246 psi | 90% | 2497 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 53,925 psi | 86% | 2467 fps | 100% |
| Accurate MAGPRO | <<locked>> | 92% | 54,563 psi | 87% | 2589 fps | 99% |
| ADI AR 2209 | <<locked>> | 90% | 54,592 psi | 88% | 2526 fps | 99.9% |
| ADI AR 2213 | <<locked>> | 94% | 55,985 psi | 90% | 2589 fps | 99.6% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 50,053 psi | 80% | 2503 fps | 99.3% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 44,730 psi | 72% | 2474 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 90% | 54,955 psi | 88% | 2526 fps | 99.9% |
| Alliant Reloder-16 | <<locked>> | 86% | 55,085 psi | 88% | 2516 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 82% | 56,028 psi | 90% | 2526 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 90% | 54,302 psi | 87% | 2520 fps | 99.9% |
| Alliant Reloder-22 | <<locked>> | 94% | 56,014 psi | 90% | 2582 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 94% | 53,635 psi | 86% | 2500 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 56,434 psi | 90% | 2605 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 90% | 53,722 psi | 86% | 2582 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 94% | 54,099 psi | 87% | 2503 fps | 97.3% |
| Bofors RP15 | <<locked>> | 96% | 54,969 psi | 88% | 2566 fps | 99.9% |
| Bofors RP30ᴾ | <<locked>> | 100% | 52,475 psi | 84% | 2566 fps | 99.6% |
| Bofors RP5 | <<locked>> | 94% | 56,014 psi | 90% | 2582 fps | 100% |
| Bofors RP7 | <<locked>> | 84% | 56,376 psi | 90% | 2470 fps | 100% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 55,317 psi | 89% | 2579 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 84% | 55,608 psi | 89% | 2520 fps | 100% |
| Hodgdon H4350 | <<locked>> | 82% | 54,737 psi | 88% | 2480 fps | 99.9% |
| Hodgdon H4831 | <<locked>> | 92% | 55,912 psi | 90% | 2530 fps | 99.2% |
| Hodgdon H4831 SC | <<locked>> | 92% | 54,882 psi | 88% | 2516 fps | 99.1% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 55,143 psi | 88% | 2448 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 55,419 psi | 89% | 2680 fps | 100% |
| Hodgdon Superformance | <<locked>> | 84% | 55,912 psi | 90% | 2559 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,304 psi | 60% | 1526 fps | 100% |
| IMR 4350 | <<locked>> | 86% | 54,346 psi | 87% | 2461 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 82% | 54,128 psi | 87% | 2441 fps | 100% |
| IMR 4831 | <<locked>> | 86% | 54,491 psi | 87% | 2464 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 90% | 53,461 psi | 86% | 2464 fps | 99% |
| IMR 7828 SSC | <<locked>> | 94% | 54,012 psi | 87% | 2569 fps | 99.5% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 40,364 psi | 65% | 2392 fps | 97.6% |
| Lovex S065 | <<locked>> | 84% | 55,027 psi | 88% | 2441 fps | 100% |
| Lovex S070 | <<locked>> | 84% | 53,171 psi | 85% | 2441 fps | 100% |
| Lovex S071 | <<locked>> | 98% | 53,693 psi | 86% | 2464 fps | 100% |
| Norma 204 | <<locked>> | 86% | 55,114 psi | 88% | 2513 fps | 99.9% |
| Norma 217ᴾ | <<locked>> | 100% | 40,393 psi | 65% | 2415 fps | 99.3% |
| Norma MRP | <<locked>> | 92% | 55,898 psi | 90% | 2602 fps | 100% |
| Norma URP | <<locked>> | 86% | 56,057 psi | 90% | 2500 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 54,563 psi | 87% | 2589 fps | 99.8% |
| Ramshot Hunter | <<locked>> | 86% | 54,708 psi | 88% | 2510 fps | 100% |
| Ramshot Magnum | <<locked>> | 96% | 52,533 psi | 84% | 2526 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,043 psi | 61% | 1562 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 53,998 psi | 87% | 2493 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 55,912 psi | 90% | 2566 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 55,796 psi | 89% | 2677 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 50,575 psi | 81% | 2582 fps | 98.6% |
| Rottweil R 904 | <<locked>> | 90% | 55,912 psi | 90% | 2500 fps | 99.6% |
| Rottweil R 905 | <<locked>> | 90% | 53,824 psi | 86% | 2510 fps | 99.9% |
| Rottweil R 907 | <<locked>> | 84% | 56,376 psi | 90% | 2470 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 84% | 55,027 psi | 88% | 2441 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 53,171 psi | 85% | 2441 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 54,085 psi | 87% | 2402 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 53,403 psi | 86% | 2507 fps | 99.9% |
| Somchem S361 | <<locked>> | 88% | 53,635 psi | 86% | 2448 fps | 98.9% |
| Somchem S365 | <<locked>> | 86% | 52,910 psi | 85% | 2457 fps | 100% |
| Somchem S385 | <<locked>> | 90% | 54,085 psi | 87% | 2484 fps | 100% |
| Vihtavuori N150 | <<locked>> | 82% | 54,926 psi | 88% | 2385 fps | 100% |
| Vihtavuori N160 | <<locked>> | 84% | 54,114 psi | 87% | 2444 fps | 100% |
| Vihtavuori N165 | <<locked>> | 94% | 53,751 psi | 86% | 2470 fps | 100% |
| Vihtavuori N170ᴾ | <<locked>> | 100% | 55,564 psi | 89% | 2526 fps | 95.9% |
| Vihtavuori N550 | <<locked>> | 84% | 53,316 psi | 85% | 2454 fps | 100% |
| Vihtavuori N555 | <<locked>> | 92% | 56,043 psi | 90% | 2523 fps | 100% |
| Vihtavuori N560 | <<locked>> | 92% | 55,724 psi | 89% | 2602 fps | 99.4% |
| Vihtavuori N565 | <<locked>> | 98% | 55,506 psi | 89% | 2585 fps | 99.5% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 51,880 psi | 83% | 2585 fps | 98.4% |
| Vihtavuori N570ᴾ | <<locked>> | 100% | 49,023 psi | 79% | 2575 fps | 96% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 53,272 psi | 85% | 2408 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 55,608 psi | 89% | 2520 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 96% | 55,129 psi | 88% | 2625 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 53,766 psi | 86% | 2480 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% | 35,331 psi | 57% | 2169 fps | 99% |
| Accurate 4350 | <<locked>> | 80% | 47,195 psi | 76% | 2375 fps | 100% |
| Accurate MAGPRO | 61.3 gr | 82% | 38,682 psi | 62% | 2320 fps | 95.4% |
| ADI AR 2209 | <<locked>> | 80% | 39,320 psi | 63% | 2277 fps | 97.9% |
| ADI AR 2213 | <<locked>> | 80% | 35,041 psi | 56% | 2218 fps | 95.1% |
| ADI AR 2217 | <<locked>> | 90% | 36,172 psi | 58% | 2247 fps | 95.9% |
| ADI AR 2225 | <<locked>> | 86% | 28,703 psi | 46% | 2116 fps | 95.8% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 39,697 psi | 64% | 2280 fps | 98% |
| Alliant Reloder-16 | <<locked>> | 80% | 45,353 psi | 73% | 2382 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 80% | 52,214 psi | 84% | 2480 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 39,334 psi | 63% | 2274 fps | 97.9% |
| Alliant Reloder-22 | <<locked>> | 80% | 35,128 psi | 56% | 2228 fps | 96.8% |
| Alliant Reloder-23 | <<locked>> | 80% | 33,968 psi | 54% | 2192 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 29,501 psi | 47% | 2123 fps | 98.1% |
| Alliant Reloder-26 | 60.4 gr | 80% | 37,043 psi | 59% | 2320 fps | 99.9% |
| Baschieri & Pellagri 109 | <<locked>> | 88% | 44,976 psi | 72% | 2352 fps | 95.1% |
| Bofors RP15 | <<locked>> | 80% | 32,808 psi | 53% | 2175 fps | 95.8% |
| Bofors RP30 | <<locked>> | 86% | 32,808 psi | 53% | 2208 fps | 95.1% |
| Bofors RP5 | <<locked>> | 80% | 35,128 psi | 56% | 2228 fps | 96.8% |
| Bofors RP7 | <<locked>> | 80% | 49,748 psi | 80% | 2375 fps | 99.9% |
| Hodgdon H1000 | <<locked>> | 86% | 34,476 psi | 55% | 2211 fps | 95.9% |
| Hodgdon H414 | <<locked>> | 80% | 48,791 psi | 78% | 2421 fps | 100% |
| Hodgdon H4350 | <<locked>> | 80% | 51,184 psi | 82% | 2431 fps | 99.8% |
| Hodgdon H4831 | <<locked>> | 80% | 37,434 psi | 60% | 2224 fps | 95.4% |
| Hodgdon H4831 SC | <<locked>> | 80% | 36,724 psi | 59% | 2211 fps | 95.1% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 42,743 psi | 69% | 2277 fps | 100% |
| Hodgdon Retumbo | 57.9 gr | 82% | 30,719 psi | 49% | 2192 fps | 95.5% |
| Hodgdon Superformance | <<locked>> | 80% | 48,182 psi | 77% | 2448 fps | 99.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,862 psi | 45% | 1358 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 45,078 psi | 72% | 2323 fps | 99.5% |
| IMR 4451 Enduron | <<locked>> | 80% | 51,126 psi | 82% | 2398 fps | 100% |
| IMR 4831 | <<locked>> | 80% | 44,991 psi | 72% | 2333 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 39,160 psi | 63% | 2224 fps | 96.1% |
| IMR 7828 SSC | <<locked>> | 82% | 36,158 psi | 58% | 2254 fps | 95.7% |
| IMR 8133 Enduron | <<locked>> | 96% | 35,418 psi | 57% | 2290 fps | 95.9% |
| Lovex S065 | <<locked>> | 80% | 48,646 psi | 78% | 2352 fps | 100% |
| Lovex S070 | <<locked>> | 80% | 46,949 psi | 75% | 2349 fps | 99.9% |
| Lovex S071 | <<locked>> | 80% | 30,603 psi | 49% | 2067 fps | 97.7% |
| Norma 204 | <<locked>> | 80% | 45,266 psi | 73% | 2362 fps | 98.9% |
| Norma 217 | <<locked>> | 90% | 29,225 psi | 47% | 2159 fps | 95.6% |
| Norma MRP | <<locked>> | 80% | 36,854 psi | 59% | 2290 fps | 98.6% |
| Norma URP | <<locked>> | 80% | 46,238 psi | 74% | 2362 fps | 100% |
| Ramshot Grand | <<locked>> | 82% | 35,592 psi | 57% | 2257 fps | 95.9% |
| Ramshot Hunter | <<locked>> | 80% | 45,078 psi | 72% | 2369 fps | 100% |
| Ramshot Magnum | <<locked>> | 80% | 29,515 psi | 47% | 2103 fps | 95.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,587 psi | 46% | 1394 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 47,050 psi | 75% | 2398 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 45,237 psi | 73% | 2418 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 80% | 27,702 psi | 44% | 2113 fps | 95% |
| ReloadSwiss RS 80 | <<locked>> | 92% | 37,753 psi | 61% | 2352 fps | 95.2% |
| Rottweil R 904 | <<locked>> | 80% | 40,640 psi | 65% | 2257 fps | 97.2% |
| Rottweil R 905 | <<locked>> | 80% | 38,754 psi | 62% | 2264 fps | 97.9% |
| Rottweil R 907 | <<locked>> | 80% | 49,748 psi | 80% | 2375 fps | 99.9% |
| Shooters World Long Rifle | <<locked>> | 80% | 48,646 psi | 78% | 2352 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 46,949 psi | 75% | 2349 fps | 99.9% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 47,630 psi | 76% | 2313 fps | 99.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 38,421 psi | 62% | 2260 fps | 97.8% |
| Somchem S361 | <<locked>> | 80% | 41,263 psi | 66% | 2251 fps | 96.5% |
| Somchem S365 | <<locked>> | 80% | 43,308 psi | 69% | 2326 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 39,233 psi | 63% | 2247 fps | 98.6% |
| Vihtavuori N150 | <<locked>> | 80% | 51,576 psi | 83% | 2343 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 47,616 psi | 76% | 2356 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 34,040 psi | 55% | 2139 fps | 97% |
| Vihtavuori N170 | <<locked>> | 98% | 52,098 psi | 84% | 2477 fps | 95.1% |
| Vihtavuori N550 | <<locked>> | 80% | 47,079 psi | 75% | 2365 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 38,101 psi | 61% | 2257 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 37,043 psi | 59% | 2280 fps | 95.5% |
| Vihtavuori N565 | <<locked>> | 86% | 37,130 psi | 60% | 2277 fps | 95.9% |
| Vihtavuori N568 | <<locked>> | 92% | 39,320 psi | 63% | 2365 fps | 95.1% |
| Vihtavuori N570 | <<locked>> | 98% | 45,905 psi | 74% | 2520 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 46,572 psi | 75% | 2323 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 49,008 psi | 79% | 2425 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 80% | 30,226 psi | 48% | 2224 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 35,824 psi | 57% | 2182 fps | 96.9% |
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 74 powders for .300 Win. Mag. loaded with the .308 | 240gr | Woodleigh PP SN. Hodgdon Retumbo delivers the highest muzzle velocity at 2,680 fps; across all powders the maximum-charge window runs from 1,526 fps to 2,680 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 (430 MPa), the top charges use 60–90 %, leaving at least 10 % headroom. The 240.0 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. Accurate MAGPRO, Hodgdon Retumbo, Alliant Reloder-26 rank at the top here: for .300 Win. Mag. with the .308 | 240gr | Woodleigh PP SN 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.