Load Specifications
Load data in caliber .300 Blaser Mag. with .308 | 240gr | Woodleigh PP SN bullet and 72 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Hodgdon Retumbo, ReloadSwiss RS 76 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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Max Load - Barrel Length: 25.6"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 92% | 55,085 psi | 90% | 2536 fps | 100% |
| Accurate 4350 | <<locked>> | 82% | 52,707 psi | 87% | 2507 fps | 100% |
| Accurate High Country | <<locked>> | 88% | 52,968 psi | 87% | 2635 fps | 99.8% |
| Accurate MAGPRO | <<locked>> | 90% | 53,606 psi | 88% | 2638 fps | 99.3% |
| ADI AR 2209 | <<locked>> | 88% | 53,417 psi | 88% | 2569 fps | 100% |
| ADI AR 2213 | <<locked>> | 92% | 54,650 psi | 90% | 2631 fps | 99.8% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 52,562 psi | 86% | 2602 fps | 99.8% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 47,021 psi | 77% | 2575 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 88% | 53,534 psi | 88% | 2566 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 84% | 53,853 psi | 88% | 2556 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 88% | 52,939 psi | 87% | 2559 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 92% | 54,897 psi | 90% | 2628 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 92% | 52,837 psi | 87% | 2543 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 96% | 52,199 psi | 86% | 2608 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 88% | 52,750 psi | 87% | 2625 fps | 100% |
| Alliant Reloder-33ᴾ | <<locked>> | 100% | 48,646 psi | 80% | 2625 fps | 97.1% |
| Baschieri & Pellagri 109 | <<locked>> | 92% | 52,678 psi | 86% | 2549 fps | 97.8% |
| Bofors RP15 | <<locked>> | 94% | 54,099 psi | 89% | 2615 fps | 100% |
| Bofors RP30 | <<locked>> | 98% | 51,706 psi | 85% | 2615 fps | 99.8% |
| Bofors RP5 | <<locked>> | 92% | 54,897 psi | 90% | 2628 fps | 100% |
| Bofors RP7 | <<locked>> | 82% | 54,737 psi | 90% | 2507 fps | 100% |
| Hodgdon H1000 | <<locked>> | 98% | 54,070 psi | 89% | 2625 fps | 100% |
| Hodgdon H414 | <<locked>> | 82% | 54,230 psi | 89% | 2559 fps | 100% |
| Hodgdon H4831 | <<locked>> | 90% | 54,607 psi | 90% | 2575 fps | 99.5% |
| Hodgdon H4831 SC | <<locked>> | 90% | 53,432 psi | 88% | 2556 fps | 99.4% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 54,012 psi | 89% | 2484 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 98% | 54,549 psi | 90% | 2730 fps | 100% |
| Hodgdon Superformance | <<locked>> | 82% | 54,346 psi | 89% | 2595 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,463 psi | 62% | 1568 fps | 100% |
| IMR 4350 | <<locked>> | 84% | 52,924 psi | 87% | 2500 fps | 100% |
| IMR 4831 | <<locked>> | 84% | 53,171 psi | 87% | 2500 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 88% | 52,228 psi | 86% | 2507 fps | 99.3% |
| IMR 7828 SSC | <<locked>> | 92% | 52,866 psi | 87% | 2615 fps | 99.8% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 42,641 psi | 70% | 2497 fps | 98.8% |
| Lovex S065 | <<locked>> | 82% | 53,505 psi | 88% | 2477 fps | 100% |
| Lovex S070 | <<locked>> | 84% | 55,114 psi | 90% | 2523 fps | 100% |
| Lovex S071 | <<locked>> | 96% | 52,953 psi | 87% | 2510 fps | 100% |
| Norma 204 | <<locked>> | 84% | 53,708 psi | 88% | 2552 fps | 100% |
| Norma 217ᴾ | <<locked>> | 100% | 42,975 psi | 71% | 2520 fps | 99.9% |
| Norma MRP | <<locked>> | 90% | 54,795 psi | 90% | 2644 fps | 100% |
| Norma URP | <<locked>> | 84% | 54,665 psi | 90% | 2539 fps | 100% |
| Ramshot Grand | <<locked>> | 92% | 53,287 psi | 87% | 2631 fps | 99.9% |
| Ramshot Hunter | <<locked>> | 84% | 53,447 psi | 88% | 2549 fps | 100% |
| Ramshot Magnum | <<locked>> | 94% | 51,532 psi | 85% | 2572 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,203 psi | 63% | 1604 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 52,634 psi | 86% | 2533 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 84% | 54,505 psi | 89% | 2605 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 54,926 psi | 90% | 2726 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 53,838 psi | 88% | 2694 fps | 99.5% |
| Rottweil R 904 | <<locked>> | 88% | 54,418 psi | 89% | 2539 fps | 99.8% |
| Rottweil R 905 | <<locked>> | 88% | 52,504 psi | 86% | 2549 fps | 100% |
| Rottweil R 907 | <<locked>> | 82% | 54,737 psi | 90% | 2507 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 82% | 53,505 psi | 88% | 2477 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 55,114 psi | 90% | 2523 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 52,373 psi | 86% | 2434 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 88% | 52,098 psi | 86% | 2546 fps | 100% |
| Somchem S361 | <<locked>> | 86% | 52,228 psi | 86% | 2487 fps | 99.2% |
| Somchem S365 | <<locked>> | 84% | 51,750 psi | 85% | 2493 fps | 100% |
| Somchem S385 | <<locked>> | 88% | 52,910 psi | 87% | 2526 fps | 100% |
| Vihtavuori N160 | <<locked>> | 82% | 52,837 psi | 87% | 2484 fps | 100% |
| Vihtavuori N165 | <<locked>> | 92% | 52,605 psi | 86% | 2513 fps | 100% |
| Vihtavuori N170 | <<locked>> | 98% | 54,650 psi | 90% | 2579 fps | 96.6% |
| Vihtavuori N550 | <<locked>> | 82% | 51,982 psi | 85% | 2490 fps | 100% |
| Vihtavuori N555 | <<locked>> | 90% | 55,042 psi | 90% | 2566 fps | 100% |
| Vihtavuori N560 | <<locked>> | 90% | 54,563 psi | 90% | 2644 fps | 99.7% |
| Vihtavuori N565 | <<locked>> | 96% | 54,592 psi | 90% | 2635 fps | 99.8% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 55,013 psi | 90% | 2694 fps | 99.3% |
| Vihtavuori N570ᴾ | <<locked>> | 100% | 51,982 psi | 85% | 2690 fps | 97.6% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 51,924 psi | 85% | 2444 fps | 100% |
| Winchester 760 | <<locked>> | 82% | 54,433 psi | 89% | 2562 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 94% | 54,476 psi | 89% | 2671 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 90% | 52,562 psi | 86% | 2523 fps | 99.9% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 25.6"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 80% | 37,014 psi | 61% | 2257 fps | 99.6% |
| Accurate 4350 | <<locked>> | 80% | 49,255 psi | 81% | 2461 fps | 100% |
| Accurate High Country | 61.6 gr | 80% | 40,161 psi | 66% | 2415 fps | 98% |
| Accurate MAGPRO | <<locked>> | 80% | 37,927 psi | 62% | 2362 fps | 96.1% |
| ADI AR 2209 | <<locked>> | 80% | 40,988 psi | 67% | 2369 fps | 98.8% |
| ADI AR 2213 | <<locked>> | 80% | 36,651 psi | 60% | 2316 fps | 96.7% |
| ADI AR 2217 | <<locked>> | 86% | 33,228 psi | 55% | 2241 fps | 95.7% |
| ADI AR 2225 | <<locked>> | 82% | 26,411 psi | 43% | 2110 fps | 95.6% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 41,379 psi | 68% | 2369 fps | 98.9% |
| Alliant Reloder-16 | <<locked>> | 80% | 47,268 psi | 78% | 2464 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 40,988 psi | 67% | 2365 fps | 98.9% |
| Alliant Reloder-22 | <<locked>> | 80% | 36,956 psi | 61% | 2323 fps | 98.1% |
| Alliant Reloder-23 | <<locked>> | 80% | 35,607 psi | 58% | 2277 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 30,879 psi | 51% | 2218 fps | 99.2% |
| Alliant Reloder-26 | <<locked>> | 80% | 39,349 psi | 65% | 2418 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 96% | 42,119 psi | 69% | 2507 fps | 95.3% |
| Baschieri & Pellagri 109 | <<locked>> | 86% | 43,845 psi | 72% | 2398 fps | 95.7% |
| Bofors RP15 | <<locked>> | 80% | 34,418 psi | 56% | 2267 fps | 97.3% |
| Bofors RP30 | <<locked>> | 82% | 30,269 psi | 50% | 2205 fps | 95% |
| Bofors RP5 | <<locked>> | 80% | 36,956 psi | 61% | 2323 fps | 98.1% |
| Bofors RP7 | <<locked>> | 80% | 51,343 psi | 84% | 2457 fps | 100% |
| Hodgdon H1000 | <<locked>> | 82% | 31,604 psi | 52% | 2201 fps | 95.7% |
| Hodgdon H414 | <<locked>> | 80% | 50,821 psi | 83% | 2510 fps | 100% |
| Hodgdon H4831 | <<locked>> | 80% | 39,131 psi | 64% | 2316 fps | 96.8% |
| Hodgdon H4831 SC | <<locked>> | 80% | 38,435 psi | 63% | 2303 fps | 96.6% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 44,556 psi | 73% | 2356 fps | 100% |
| Hodgdon Retumbo | 59.4 gr | 80% | 30,255 psi | 50% | 2244 fps | 96.5% |
| Hodgdon Superformance | <<locked>> | 80% | 50,459 psi | 83% | 2543 fps | 100% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,065 psi | 46% | 1398 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 46,789 psi | 77% | 2408 fps | 99.9% |
| IMR 4831 | <<locked>> | 80% | 46,673 psi | 77% | 2411 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 40,669 psi | 67% | 2313 fps | 97.4% |
| IMR 7828 SSC | <<locked>> | 80% | 35,346 psi | 58% | 2297 fps | 96.4% |
| IMR 8133 Enduron | <<locked>> | 92% | 32,851 psi | 54% | 2290 fps | 95.9% |
| Lovex S065 | <<locked>> | 80% | 50,241 psi | 82% | 2431 fps | 100% |
| Lovex S070 | <<locked>> | 80% | 48,747 psi | 80% | 2431 fps | 100% |
| Lovex S071 | <<locked>> | 80% | 31,981 psi | 53% | 2152 fps | 98.7% |
| Norma 204 | <<locked>> | 80% | 47,123 psi | 77% | 2454 fps | 99.6% |
| Norma 217 | <<locked>> | 86% | 27,108 psi | 45% | 2159 fps | 95.5% |
| Norma MRP | <<locked>> | 80% | 38,711 psi | 64% | 2385 fps | 99.4% |
| Norma URP | <<locked>> | 80% | 48,182 psi | 79% | 2448 fps | 100% |
| Ramshot Grand | <<locked>> | 80% | 34,882 psi | 57% | 2303 fps | 96.7% |
| Ramshot Hunter | <<locked>> | 80% | 46,992 psi | 77% | 2454 fps | 100% |
| Ramshot Magnum | <<locked>> | 80% | 31,038 psi | 51% | 2198 fps | 97.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,790 psi | 47% | 1434 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 49,284 psi | 81% | 2484 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 47,369 psi | 78% | 2507 fps | 100% |
| ReloadSwiss RS 76 | 63.5 gr | 80% | 29,022 psi | 48% | 2218 fps | 97.1% |
| ReloadSwiss RS 80 | <<locked>> | 88% | 34,592 psi | 57% | 2346 fps | 95% |
| Rottweil R 904 | <<locked>> | 80% | 42,308 psi | 69% | 2346 fps | 98.2% |
| Rottweil R 905 | <<locked>> | 80% | 40,524 psi | 67% | 2356 fps | 98.9% |
| Rottweil R 907 | <<locked>> | 80% | 51,343 psi | 84% | 2457 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 80% | 50,241 psi | 82% | 2431 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 48,747 psi | 80% | 2431 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 49,313 psi | 81% | 2392 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 40,190 psi | 66% | 2352 fps | 98.8% |
| Somchem S361 | <<locked>> | 80% | 42,931 psi | 70% | 2339 fps | 97.7% |
| Somchem S365 | <<locked>> | 80% | 45,397 psi | 75% | 2408 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 41,031 psi | 67% | 2336 fps | 99.4% |
| Vihtavuori N160 | <<locked>> | 80% | 49,487 psi | 81% | 2438 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 35,563 psi | 58% | 2228 fps | 98.1% |
| Vihtavuori N170 | <<locked>> | 94% | 47,776 psi | 78% | 2474 fps | 95% |
| Vihtavuori N550 | <<locked>> | 80% | 48,805 psi | 80% | 2444 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 40,030 psi | 66% | 2343 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 38,769 psi | 64% | 2379 fps | 97% |
| Vihtavuori N565 | <<locked>> | 82% | 34,214 psi | 56% | 2274 fps | 95.7% |
| Vihtavuori N568 | <<locked>> | 88% | 36,216 psi | 59% | 2362 fps | 95% |
| Vihtavuori N570 | <<locked>> | 94% | 42,250 psi | 69% | 2520 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 48,457 psi | 80% | 2398 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 50,821 psi | 83% | 2510 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 80% | 32,126 psi | 53% | 2323 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 37,492 psi | 62% | 2274 fps | 98.1% |
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 72 powders for .300 Blaser Mag. loaded with the .308 | 240gr | Woodleigh PP SN. Hodgdon Retumbo delivers the highest muzzle velocity at 2,730 fps; across all powders the maximum-charge window runs from 1,568 fps to 2,730 fps. ADI AR 2217 gives the best case fill at 100 %, and 72 of the 72 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (420 MPa), the top charges use 62–90 %, 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-33 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. Hodgdon Retumbo, ReloadSwiss RS 76, Accurate High Country rank at the top here: for .300 Blaser 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.