Load Specifications
Load data in caliber .300 Blaser Mag. with .308 | 200gr | Sako Hammerhead 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, Norma MRP and Vihtavuori N560.
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% | 52,257 psi | 86% | 2743 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 53,925 psi | 89% | 2776 fps | 100% |
| Accurate MAGPRO | <<locked>> | 94% | 54,201 psi | 89% | 2887 fps | 98.1% |
| ADI AR 2209 | <<locked>> | 92% | 54,549 psi | 90% | 2831 fps | 99.5% |
| ADI AR 2213 | <<locked>> | 94% | 52,257 psi | 86% | 2831 fps | 98.6% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 46,760 psi | 77% | 2730 fps | 97.8% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 41,452 psi | 68% | 2694 fps | 99.2% |
| Alliant Power Pro Varmint | <<locked>> | 92% | 54,839 psi | 90% | 2828 fps | 99.5% |
| Alliant Reloder-16 | <<locked>> | 88% | 54,578 psi | 90% | 2825 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 82% | 52,054 psi | 85% | 2792 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 92% | 54,157 psi | 89% | 2818 fps | 99.5% |
| Alliant Reloder-22 | <<locked>> | 94% | 52,083 psi | 86% | 2828 fps | 99.4% |
| Alliant Reloder-23 | <<locked>> | 96% | 53,011 psi | 87% | 2802 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 52,286 psi | 86% | 2861 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 92% | 53,185 psi | 87% | 2890 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 96% | 54,302 psi | 89% | 2792 fps | 96.2% |
| Bofors RP15 | <<locked>> | 98% | 54,723 psi | 90% | 2871 fps | 99.6% |
| Bofors RP30ᴾ | <<locked>> | 100% | 48,225 psi | 79% | 2799 fps | 98.5% |
| Bofors RP5 | <<locked>> | 94% | 52,083 psi | 86% | 2828 fps | 99.4% |
| Bofors RP7 | <<locked>> | 84% | 53,098 psi | 87% | 2723 fps | 99.7% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 51,517 psi | 85% | 2815 fps | 99.1% |
| Hodgdon H414 | <<locked>> | 84% | 52,040 psi | 85% | 2772 fps | 99.9% |
| Hodgdon H4350 | <<locked>> | 84% | 54,766 psi | 90% | 2782 fps | 99.6% |
| Hodgdon H4831 | <<locked>> | 92% | 52,272 psi | 86% | 2772 fps | 98% |
| Hodgdon H4831 SC | <<locked>> | 94% | 54,810 psi | 90% | 2812 fps | 98.4% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 55,056 psi | 90% | 2749 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 51,155 psi | 84% | 2923 fps | 99.9% |
| Hodgdon Superformance | <<locked>> | 84% | 51,866 psi | 85% | 2805 fps | 99.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,912 psi | 61% | 1722 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 54,433 psi | 89% | 2762 fps | 99.8% |
| IMR 4451 Enduron | <<locked>> | 84% | 54,679 psi | 90% | 2746 fps | 99.9% |
| IMR 4831 | <<locked>> | 88% | 54,302 psi | 89% | 2769 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 53,664 psi | 88% | 2759 fps | 98.3% |
| IMR 7828 SSC | <<locked>> | 96% | 53,679 psi | 88% | 2867 fps | 98.9% |
| Lovex S065 | <<locked>> | 86% | 55,056 psi | 90% | 2743 fps | 100% |
| Lovex S070 | <<locked>> | 86% | 53,127 psi | 87% | 2740 fps | 99.9% |
| Lovex S071ᴾ | <<locked>> | 100% | 53,171 psi | 87% | 2756 fps | 100% |
| Norma 204 | <<locked>> | 86% | 51,677 psi | 85% | 2759 fps | 99.1% |
| Norma 217ᴾ | <<locked>> | 100% | 36,956 psi | 61% | 2618 fps | 97.6% |
| Norma MRP | <<locked>> | 92% | 51,590 psi | 85% | 2848 fps | 99.9% |
| Norma URP | <<locked>> | 86% | 52,344 psi | 86% | 2756 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 54,143 psi | 89% | 2884 fps | 99.2% |
| Ramshot Hunter | <<locked>> | 88% | 54,679 psi | 90% | 2815 fps | 100% |
| Ramshot Magnum | <<locked>> | 98% | 52,112 psi | 86% | 2818 fps | 99.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,695 psi | 62% | 1765 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 53,693 psi | 88% | 2799 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 51,967 psi | 85% | 2825 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 51,488 psi | 85% | 2920 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 46,470 psi | 76% | 2805 fps | 96.7% |
| Rottweil R 903 | <<locked>> | 82% | 54,288 psi | 89% | 2723 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 52,591 psi | 86% | 2746 fps | 98.6% |
| Rottweil R 905 | <<locked>> | 92% | 53,461 psi | 88% | 2805 fps | 99.5% |
| Rottweil R 907 | <<locked>> | 84% | 53,098 psi | 87% | 2723 fps | 99.7% |
| Shooters World Long Rifle | <<locked>> | 86% | 55,056 psi | 90% | 2743 fps | 100% |
| Shooters World SW4350 | <<locked>> | 86% | 53,127 psi | 87% | 2740 fps | 99.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 54,505 psi | 89% | 2598 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 54,389 psi | 89% | 2700 fps | 99.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 53,026 psi | 87% | 2802 fps | 99.5% |
| Somchem S355 | <<locked>> | 82% | 53,998 psi | 89% | 2717 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 53,766 psi | 88% | 2736 fps | 98.1% |
| Somchem S365 | <<locked>> | 88% | 52,446 psi | 86% | 2759 fps | 100% |
| Somchem S385 | <<locked>> | 92% | 53,983 psi | 89% | 2779 fps | 99.8% |
| Vihtavuori N150 | <<locked>> | 82% | 51,779 psi | 85% | 2644 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 54,302 psi | 89% | 2749 fps | 100% |
| Vihtavuori N165 | <<locked>> | 96% | 53,374 psi | 88% | 2759 fps | 99.7% |
| Vihtavuori N550 | <<locked>> | 86% | 53,403 psi | 88% | 2756 fps | 100% |
| Vihtavuori N555 | <<locked>> | 92% | 52,098 psi | 86% | 2779 fps | 100% |
| Vihtavuori N560 | <<locked>> | 92% | 51,590 psi | 85% | 2841 fps | 98.2% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 54,911 psi | 90% | 2881 fps | 98.8% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 47,921 psi | 79% | 2815 fps | 96.5% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 53,577 psi | 88% | 2713 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 52,272 psi | 86% | 2779 fps | 99.9% |
| Winchester StaBALL HD | <<locked>> | 98% | 53,650 psi | 88% | 2933 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 53,766 psi | 88% | 2776 fps | 99.4% |
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% | 32,721 psi | 54% | 2375 fps | 97.3% |
| Accurate 4350 | <<locked>> | 80% | 44,019 psi | 72% | 2618 fps | 100% |
| Accurate MAGPRO | <<locked>> | 88% | 44,092 psi | 72% | 2710 fps | 95.8% |
| ADI AR 2209 | <<locked>> | 80% | 36,709 psi | 60% | 2493 fps | 95.9% |
| ADI AR 2213 | <<locked>> | 86% | 40,016 psi | 66% | 2598 fps | 95.6% |
| ADI AR 2217 | <<locked>> | 94% | 38,319 psi | 63% | 2556 fps | 95.2% |
| ADI AR 2225 | <<locked>> | 92% | 32,227 psi | 53% | 2464 fps | 96.1% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 37,115 psi | 61% | 2500 fps | 96.1% |
| Alliant Reloder-16 | <<locked>> | 80% | 42,206 psi | 69% | 2625 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 80% | 48,544 psi | 80% | 2736 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 36,782 psi | 60% | 2493 fps | 96% |
| Alliant Reloder-22 | <<locked>> | 82% | 34,867 psi | 57% | 2490 fps | 95.4% |
| Alliant Reloder-23 | <<locked>> | 80% | 31,314 psi | 51% | 2402 fps | 99.6% |
| Alliant Reloder-25 | <<locked>> | 80% | 27,398 psi | 45% | 2310 fps | 95.5% |
| Alliant Reloder-26 | <<locked>> | 80% | 34,026 psi | 56% | 2533 fps | 99% |
| Baschieri & Pellagri 109 | <<locked>> | 94% | 51,111 psi | 84% | 2740 fps | 95.4% |
| Bofors RP15 | <<locked>> | 84% | 34,577 psi | 57% | 2484 fps | 95.1% |
| Bofors RP30 | <<locked>> | 92% | 36,956 psi | 61% | 2572 fps | 95.4% |
| Bofors RP5 | <<locked>> | 82% | 34,867 psi | 57% | 2490 fps | 95.4% |
| Bofors RP7 | <<locked>> | 80% | 46,891 psi | 77% | 2618 fps | 99.1% |
| Hodgdon H1000 | <<locked>> | 90% | 36,724 psi | 60% | 2520 fps | 95.3% |
| Hodgdon H414 | <<locked>> | 80% | 45,672 psi | 75% | 2664 fps | 99.4% |
| Hodgdon H4350 | <<locked>> | 80% | 48,196 psi | 79% | 2677 fps | 98.9% |
| Hodgdon H4831 | <<locked>> | 86% | 42,685 psi | 70% | 2602 fps | 95.8% |
| Hodgdon H4831 SC | <<locked>> | 86% | 41,930 psi | 69% | 2589 fps | 95.5% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 39,827 psi | 65% | 2513 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 88% | 34,650 psi | 57% | 2562 fps | 95.9% |
| Hodgdon Superformance | <<locked>> | 80% | 44,773 psi | 74% | 2687 fps | 99.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,746 psi | 46% | 1542 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 42,366 psi | 70% | 2556 fps | 98.5% |
| IMR 4451 Enduron | <<locked>> | 80% | 48,225 psi | 79% | 2641 fps | 99.5% |
| IMR 4831 | <<locked>> | 80% | 41,959 psi | 69% | 2569 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 84% | 41,800 psi | 69% | 2546 fps | 95.7% |
| IMR 7828 SSC | <<locked>> | 86% | 38,479 psi | 63% | 2575 fps | 95.1% |
| Lovex S065 | <<locked>> | 80% | 45,803 psi | 75% | 2595 fps | 99.8% |
| Lovex S070 | <<locked>> | 80% | 44,179 psi | 73% | 2585 fps | 99.2% |
| Lovex S071 | <<locked>> | 80% | 28,123 psi | 46% | 2257 fps | 95.4% |
| Norma 204 | <<locked>> | 80% | 42,308 psi | 69% | 2592 fps | 97.4% |
| Norma 217 | <<locked>> | 96% | 32,489 psi | 53% | 2503 fps | 95.8% |
| Norma MRP | 64 gr | 80% | 33,910 psi | 56% | 2497 fps | 96.6% |
| Norma URP | <<locked>> | 80% | 43,221 psi | 71% | 2605 fps | 100% |
| Ramshot Grand | <<locked>> | 86% | 38,014 psi | 62% | 2579 fps | 95.4% |
| Ramshot Hunter | <<locked>> | 80% | 42,047 psi | 69% | 2602 fps | 99.3% |
| Ramshot Magnum | <<locked>> | 86% | 33,736 psi | 55% | 2461 fps | 95.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,355 psi | 47% | 1578 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 43,772 psi | 72% | 2638 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 42,076 psi | 69% | 2654 fps | 99.9% |
| ReloadSwiss RS 76 | <<locked>> | 86% | 31,517 psi | 52% | 2474 fps | 95.6% |
| ReloadSwiss RS 80 | <<locked>> | 98% | 43,076 psi | 71% | 2740 fps | 95.7% |
| Rottweil R 903 | <<locked>> | 80% | 50,952 psi | 84% | 2674 fps | 100% |
| Rottweil R 904 | <<locked>> | 80% | 38,159 psi | 63% | 2477 fps | 95.1% |
| Rottweil R 905 | <<locked>> | 80% | 35,984 psi | 59% | 2477 fps | 95.9% |
| Rottweil R 907 | <<locked>> | 80% | 46,891 psi | 77% | 2618 fps | 99.1% |
| Shooters World Long Rifle | <<locked>> | 80% | 45,803 psi | 75% | 2595 fps | 99.8% |
| Shooters World SW4350 | <<locked>> | 80% | 44,179 psi | 73% | 2585 fps | 99.2% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 51,169 psi | 84% | 2556 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 44,846 psi | 74% | 2546 fps | 99.2% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 35,665 psi | 59% | 2470 fps | 95.8% |
| Somchem S355 | <<locked>> | 80% | 50,778 psi | 83% | 2671 fps | 100% |
| Somchem S361 | <<locked>> | 82% | 41,379 psi | 68% | 2520 fps | 95.3% |
| Somchem S365 | <<locked>> | 80% | 39,987 psi | 66% | 2562 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 36,550 psi | 60% | 2461 fps | 97% |
| Vihtavuori N150 | <<locked>> | 80% | 48,617 psi | 80% | 2598 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 44,686 psi | 73% | 2598 fps | 100% |
| Vihtavuori N165 | <<locked>> | 82% | 33,779 psi | 55% | 2395 fps | 95.6% |
| Vihtavuori N550 | <<locked>> | 80% | 44,005 psi | 72% | 2605 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 35,215 psi | 58% | 2477 fps | 99.6% |
| Vihtavuori N560 | 68.8 gr | 86% | 42,018 psi | 69% | 2664 fps | 95.9% |
| Vihtavuori N565 | <<locked>> | 90% | 39,088 psi | 64% | 2592 fps | 95.2% |
| Vihtavuori N568 | <<locked>> | 98% | 44,541 psi | 73% | 2749 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 43,526 psi | 71% | 2562 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 45,672 psi | 75% | 2664 fps | 99.4% |
| Winchester StaBALL HD | 63.4 gr | 80% | 27,847 psi | 46% | 2418 fps | 99.7% |
| Winchester Supreme 780 | <<locked>> | 82% | 35,607 psi | 58% | 2441 fps | 95.6% |
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 Blaser Mag. loaded with the .308 | 200gr | Sako Hammerhead. Winchester StaBALL HD delivers the highest muzzle velocity at 2,933 fps; across all powders the maximum-charge window runs from 1,722 fps to 2,933 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 (420 MPa), the top charges use 61–90 %, leaving at least 10 % headroom. The 200.0 gr projectile in 0.308" calls for a 1:14.0 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. Winchester StaBALL HD, Norma MRP, Vihtavuori N560 rank at the top here: for .300 Blaser Mag. with the .308 | 200gr | Sako Hammerhead 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.