Load Specifications
Load data in caliber .300 Blaser Mag. with .308 | 215gr | Berger Hybrid Target bullet and 78 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Accurate High Country, Alliant Reloder-26 and Winchester StaBALL HD.
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>> | 94% | 51,430 psi | 84% | 2621 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 53,185 psi | 87% | 2651 fps | 100% |
| Accurate High Country | <<locked>> | 92% | 52,750 psi | 87% | 2766 fps | 99.1% |
| Accurate MAGPRO | <<locked>> | 94% | 53,490 psi | 88% | 2766 fps | 98.3% |
| ADI AR 2208 | <<locked>> | 82% | 54,868 psi | 90% | 2612 fps | 100% |
| ADI AR 2209 | <<locked>> | 92% | 53,737 psi | 88% | 2703 fps | 99.6% |
| ADI AR 2213 | <<locked>> | 96% | 55,056 psi | 90% | 2766 fps | 99.2% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 45,919 psi | 75% | 2612 fps | 98% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 40,814 psi | 67% | 2579 fps | 99.4% |
| Alliant Power Pro Varmint | <<locked>> | 92% | 54,099 psi | 89% | 2703 fps | 99.6% |
| Alliant Reloder-16 | <<locked>> | 88% | 54,070 psi | 89% | 2703 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 84% | 55,042 psi | 90% | 2717 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 92% | 53,432 psi | 88% | 2697 fps | 99.6% |
| Alliant Reloder-22 | <<locked>> | 96% | 54,752 psi | 90% | 2759 fps | 99.8% |
| Alliant Reloder-23 | <<locked>> | 96% | 52,359 psi | 86% | 2684 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 51,314 psi | 84% | 2736 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 92% | 52,011 psi | 85% | 2762 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 96% | 53,751 psi | 88% | 2674 fps | 96.5% |
| Bofors RP15 | <<locked>> | 98% | 53,737 psi | 88% | 2743 fps | 99.7% |
| Bofors RP30ᴾ | <<locked>> | 100% | 47,311 psi | 78% | 2680 fps | 98.6% |
| Bofors RP5 | <<locked>> | 96% | 54,752 psi | 90% | 2759 fps | 99.8% |
| Bofors RP7 | <<locked>> | 84% | 52,779 psi | 87% | 2605 fps | 99.8% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 50,589 psi | 83% | 2690 fps | 99.2% |
| Hodgdon H414 | <<locked>> | 86% | 54,926 psi | 90% | 2703 fps | 100% |
| Hodgdon H4350 | <<locked>> | 84% | 54,259 psi | 89% | 2661 fps | 99.7% |
| Hodgdon H4831 | <<locked>> | 92% | 51,488 psi | 85% | 2651 fps | 98.2% |
| Hodgdon H4831 SC | <<locked>> | 94% | 54,186 psi | 89% | 2690 fps | 98.6% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 54,433 psi | 89% | 2628 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 50,357 psi | 83% | 2799 fps | 99.9% |
| Hodgdon Superformance | <<locked>> | 86% | 55,114 psi | 90% | 2743 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,898 psi | 61% | 1634 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 53,954 psi | 89% | 2641 fps | 99.9% |
| IMR 4451 Enduron | <<locked>> | 84% | 53,998 psi | 89% | 2621 fps | 100% |
| IMR 4831 | <<locked>> | 88% | 53,548 psi | 88% | 2644 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 52,924 psi | 87% | 2638 fps | 98.5% |
| IMR 7828 SSC | <<locked>> | 96% | 52,910 psi | 87% | 2743 fps | 99% |
| Lovex S065 | <<locked>> | 86% | 54,694 psi | 90% | 2625 fps | 100% |
| Lovex S070 | <<locked>> | 86% | 52,649 psi | 86% | 2618 fps | 100% |
| Lovex S071ᴾ | <<locked>> | 100% | 52,388 psi | 86% | 2635 fps | 100% |
| Norma 204 | <<locked>> | 88% | 54,665 psi | 90% | 2694 fps | 99.6% |
| Norma 217ᴾ | <<locked>> | 100% | 36,318 psi | 60% | 2510 fps | 97.9% |
| Norma MRP | <<locked>> | 94% | 54,621 psi | 90% | 2782 fps | 100% |
| Norma URP | <<locked>> | 86% | 51,808 psi | 85% | 2635 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 53,388 psi | 88% | 2762 fps | 99.3% |
| Ramshot Hunter | <<locked>> | 88% | 54,056 psi | 89% | 2694 fps | 100% |
| Ramshot Magnum | <<locked>> | 98% | 51,271 psi | 84% | 2697 fps | 99.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,782 psi | 62% | 1677 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 54,534 psi | 90% | 2703 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 52,924 psi | 87% | 2674 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 54,839 psi | 90% | 2753 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 50,662 psi | 83% | 2799 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 45,571 psi | 75% | 2687 fps | 96.9% |
| Rottweil R 903 | <<locked>> | 82% | 53,795 psi | 88% | 2602 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 52,040 psi | 85% | 2628 fps | 98.8% |
| Rottweil R 905 | <<locked>> | 92% | 52,837 psi | 87% | 2684 fps | 99.6% |
| Rottweil R 907 | <<locked>> | 84% | 52,779 psi | 87% | 2605 fps | 99.8% |
| Shooters World Long Rifle | <<locked>> | 86% | 54,694 psi | 90% | 2625 fps | 100% |
| Shooters World SW4350 | <<locked>> | 86% | 52,649 psi | 86% | 2618 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 54,984 psi | 90% | 2654 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 53,896 psi | 88% | 2480 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 53,795 psi | 88% | 2579 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 52,402 psi | 86% | 2680 fps | 99.6% |
| Somchem S355 | <<locked>> | 82% | 53,679 psi | 88% | 2598 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 53,243 psi | 87% | 2621 fps | 98.3% |
| Somchem S365 | <<locked>> | 88% | 51,851 psi | 85% | 2641 fps | 100% |
| Somchem S385 | <<locked>> | 92% | 53,359 psi | 88% | 2661 fps | 99.9% |
| Vihtavuori N150 | <<locked>> | 84% | 54,636 psi | 90% | 2569 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 53,664 psi | 88% | 2628 fps | 100% |
| Vihtavuori N165 | <<locked>> | 96% | 52,866 psi | 87% | 2641 fps | 99.8% |
| Vihtavuori N550 | <<locked>> | 86% | 52,707 psi | 87% | 2635 fps | 100% |
| Vihtavuori N555 | <<locked>> | 94% | 54,694 psi | 90% | 2703 fps | 100% |
| Vihtavuori N560 | <<locked>> | 94% | 54,621 psi | 90% | 2779 fps | 98.9% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 53,969 psi | 89% | 2759 fps | 99% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 46,905 psi | 77% | 2694 fps | 96.7% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 52,895 psi | 87% | 2592 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 51,634 psi | 85% | 2654 fps | 99.9% |
| Winchester StaBALL HD | <<locked>> | 98% | 52,547 psi | 86% | 2805 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 53,214 psi | 87% | 2657 fps | 99.5% |
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% | 32,271 psi | 53% | 2274 fps | 97.7% |
| Accurate 4350 | <<locked>> | 80% | 43,439 psi | 71% | 2500 fps | 100% |
| Accurate High Country | 61.3 gr | 82% | 37,289 psi | 61% | 2480 fps | 95.7% |
| Accurate MAGPRO | <<locked>> | 86% | 40,408 psi | 66% | 2533 fps | 95.2% |
| ADI AR 2208 | <<locked>> | 80% | 51,576 psi | 85% | 2566 fps | 100% |
| ADI AR 2209 | <<locked>> | 80% | 36,405 psi | 60% | 2388 fps | 96.3% |
| ADI AR 2213 | <<locked>> | 84% | 36,956 psi | 61% | 2428 fps | 95% |
| ADI AR 2217 | <<locked>> | 94% | 37,855 psi | 62% | 2448 fps | 95.5% |
| ADI AR 2225 | <<locked>> | 90% | 29,791 psi | 49% | 2306 fps | 95.4% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 36,651 psi | 60% | 2392 fps | 96.4% |
| Alliant Reloder-16 | <<locked>> | 80% | 41,698 psi | 68% | 2510 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 80% | 47,892 psi | 79% | 2615 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 36,318 psi | 60% | 2385 fps | 96.4% |
| Alliant Reloder-22 | <<locked>> | 82% | 34,447 psi | 57% | 2388 fps | 95.9% |
| Alliant Reloder-23 | <<locked>> | 80% | 31,053 psi | 51% | 2303 fps | 99.8% |
| Alliant Reloder-25 | <<locked>> | 80% | 27,166 psi | 45% | 2218 fps | 96.1% |
| Alliant Reloder-26 | 61.6 gr | 80% | 33,489 psi | 55% | 2428 fps | 99.2% |
| Baschieri & Pellagri 109 | <<locked>> | 94% | 50,589 psi | 83% | 2625 fps | 95.7% |
| Bofors RP15 | <<locked>> | 84% | 34,185 psi | 56% | 2379 fps | 95.6% |
| Bofors RP30 | <<locked>> | 92% | 36,332 psi | 60% | 2464 fps | 95.8% |
| Bofors RP5 | <<locked>> | 82% | 34,447 psi | 57% | 2388 fps | 95.9% |
| Bofors RP7 | <<locked>> | 80% | 46,441 psi | 76% | 2503 fps | 99.3% |
| Hodgdon H1000 | <<locked>> | 90% | 36,274 psi | 60% | 2415 fps | 95.6% |
| Hodgdon H414 | <<locked>> | 80% | 45,121 psi | 74% | 2549 fps | 99.5% |
| Hodgdon H4350 | <<locked>> | 80% | 47,761 psi | 78% | 2559 fps | 99.1% |
| Hodgdon H4831 | <<locked>> | 84% | 39,436 psi | 65% | 2438 fps | 95.2% |
| Hodgdon H4831 SC | <<locked>> | 84% | 38,740 psi | 64% | 2421 fps | 95% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 39,276 psi | 64% | 2402 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 86% | 32,024 psi | 53% | 2395 fps | 95.2% |
| Hodgdon Superformance | <<locked>> | 80% | 44,193 psi | 73% | 2572 fps | 99.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,688 psi | 45% | 1460 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 42,047 psi | 69% | 2444 fps | 98.7% |
| IMR 4451 Enduron | <<locked>> | 80% | 47,834 psi | 79% | 2526 fps | 99.6% |
| IMR 4831 | <<locked>> | 80% | 41,394 psi | 68% | 2454 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 82% | 38,827 psi | 64% | 2385 fps | 95.2% |
| IMR 7828 SSC | <<locked>> | 86% | 37,985 psi | 62% | 2467 fps | 95.5% |
| Lovex S065 | <<locked>> | 80% | 45,556 psi | 75% | 2484 fps | 99.9% |
| Lovex S070 | <<locked>> | 80% | 43,772 psi | 72% | 2474 fps | 99.4% |
| Lovex S071 | <<locked>> | 80% | 27,862 psi | 46% | 2162 fps | 95.9% |
| Norma 204 | <<locked>> | 80% | 41,843 psi | 69% | 2480 fps | 97.7% |
| Norma 217 | <<locked>> | 94% | 30,008 psi | 49% | 2346 fps | 95.1% |
| Norma MRP | <<locked>> | 80% | 33,533 psi | 55% | 2395 fps | 97% |
| Norma URP | <<locked>> | 80% | 42,786 psi | 70% | 2493 fps | 100% |
| Ramshot Grand | <<locked>> | 86% | 37,362 psi | 61% | 2467 fps | 95.7% |
| Ramshot Hunter | <<locked>> | 80% | 41,611 psi | 68% | 2490 fps | 99.5% |
| Ramshot Magnum | <<locked>> | 84% | 31,038 psi | 51% | 2303 fps | 95.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,340 psi | 47% | 1496 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 50,792 psi | 83% | 2651 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 43,149 psi | 71% | 2523 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 41,423 psi | 68% | 2539 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 86% | 31,067 psi | 51% | 2372 fps | 96.1% |
| ReloadSwiss RS 80 | <<locked>> | 96% | 39,407 psi | 65% | 2562 fps | 95% |
| Rottweil R 903 | <<locked>> | 80% | 50,502 psi | 83% | 2556 fps | 100% |
| Rottweil R 904 | <<locked>> | 80% | 37,811 psi | 62% | 2372 fps | 95.5% |
| Rottweil R 905 | <<locked>> | 80% | 35,650 psi | 59% | 2372 fps | 96.4% |
| Rottweil R 907 | <<locked>> | 80% | 46,441 psi | 76% | 2503 fps | 99.3% |
| Shooters World Long Rifle | <<locked>> | 80% | 45,556 psi | 75% | 2484 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 80% | 43,772 psi | 72% | 2474 fps | 99.4% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 51,721 psi | 85% | 2608 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 50,850 psi | 83% | 2441 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 44,382 psi | 73% | 2434 fps | 99.4% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 35,331 psi | 58% | 2369 fps | 96.2% |
| Somchem S355 | <<locked>> | 80% | 50,488 psi | 83% | 2552 fps | 100% |
| Somchem S361 | <<locked>> | 82% | 41,002 psi | 67% | 2415 fps | 95.7% |
| Somchem S365 | <<locked>> | 80% | 39,595 psi | 65% | 2454 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 36,143 psi | 59% | 2356 fps | 97.3% |
| Vihtavuori N150 | <<locked>> | 80% | 48,225 psi | 79% | 2480 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 44,150 psi | 72% | 2484 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 31,270 psi | 51% | 2241 fps | 95.1% |
| Vihtavuori N550 | <<locked>> | 80% | 43,453 psi | 71% | 2490 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 34,795 psi | 57% | 2372 fps | 99.7% |
| Vihtavuori N560 | <<locked>> | 84% | 38,812 psi | 64% | 2497 fps | 95.3% |
| Vihtavuori N565 | <<locked>> | 90% | 38,493 psi | 63% | 2484 fps | 95.6% |
| Vihtavuori N568 | <<locked>> | 98% | 43,816 psi | 72% | 2635 fps | 95.8% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 43,134 psi | 71% | 2451 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 45,339 psi | 74% | 2552 fps | 99.5% |
| Winchester StaBALL HD | 59.2 gr | 80% | 27,485 psi | 45% | 2320 fps | 99.9% |
| Winchester Supreme 780 | <<locked>> | 80% | 32,895 psi | 54% | 2287 fps | 95.1% |
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 78 powders for .300 Blaser Mag. loaded with the .308 | 215gr | Berger Hybrid Target. Winchester StaBALL HD delivers the highest muzzle velocity at 2,805 fps; across all powders the maximum-charge window runs from 1,634 fps to 2,805 fps. ADI AR 2217 gives the best case fill at 100 %, and 78 of the 78 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (420 MPa), the top charges use 60–90 %, leaving at least 10 % headroom. The 215.0 gr projectile in 0.308" calls for a 1:10.0 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. Accurate High Country, Alliant Reloder-26, Winchester StaBALL HD rank at the top here: for .300 Blaser Mag. with the .308 | 215gr | Berger Hybrid Target 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.