Load Specifications
Load data in caliber .300 Blaser Mag. with .308 | 200gr | Speer Hot-Cor bullet and 76 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% | 52,011 psi | 85% | 2740 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 53,635 psi | 88% | 2769 fps | 100% |
| Accurate High Country | <<locked>> | 92% | 53,388 psi | 88% | 2887 fps | 98.9% |
| Accurate MAGPRO | <<locked>> | 94% | 54,201 psi | 89% | 2887 fps | 98.1% |
| ADI AR 2209 | <<locked>> | 92% | 54,346 psi | 89% | 2825 fps | 99.5% |
| ADI AR 2213 | <<locked>> | 94% | 52,025 psi | 85% | 2828 fps | 98.5% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 46,557 psi | 76% | 2726 fps | 97.7% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 41,263 psi | 68% | 2690 fps | 99.2% |
| Alliant Power Pro Varmint | <<locked>> | 92% | 54,607 psi | 90% | 2822 fps | 99.5% |
| Alliant Reloder-16 | <<locked>> | 88% | 54,563 psi | 90% | 2825 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 82% | 51,837 psi | 85% | 2785 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 92% | 53,940 psi | 89% | 2815 fps | 99.5% |
| Alliant Reloder-22 | <<locked>> | 94% | 51,880 psi | 85% | 2825 fps | 99.4% |
| Alliant Reloder-23 | <<locked>> | 96% | 53,040 psi | 87% | 2802 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 52,083 psi | 86% | 2858 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 92% | 52,939 psi | 87% | 2887 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 96% | 54,331 psi | 89% | 2792 fps | 96.2% |
| Bofors RP15 | <<locked>> | 98% | 54,476 psi | 89% | 2867 fps | 99.6% |
| Bofors RP30ᴾ | <<locked>> | 100% | 48,008 psi | 79% | 2795 fps | 98.4% |
| Bofors RP5 | <<locked>> | 94% | 51,880 psi | 85% | 2825 fps | 99.4% |
| Bofors RP7 | <<locked>> | 84% | 53,098 psi | 87% | 2723 fps | 99.7% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 51,358 psi | 84% | 2812 fps | 99.1% |
| Hodgdon H414 | <<locked>> | 84% | 52,025 psi | 85% | 2772 fps | 99.9% |
| Hodgdon H4350 | <<locked>> | 84% | 54,752 psi | 90% | 2782 fps | 99.6% |
| Hodgdon H4831 | <<locked>> | 92% | 52,083 psi | 86% | 2769 fps | 97.9% |
| Hodgdon H4831 SC | <<locked>> | 94% | 54,592 psi | 90% | 2808 fps | 98.3% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 54,781 psi | 90% | 2746 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 50,952 psi | 84% | 2920 fps | 99.9% |
| Hodgdon Superformance | <<locked>> | 84% | 51,866 psi | 85% | 2805 fps | 99.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,014 psi | 61% | 1722 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 54,433 psi | 89% | 2759 fps | 99.8% |
| IMR 4451 Enduron | <<locked>> | 84% | 54,447 psi | 89% | 2743 fps | 99.9% |
| IMR 4831 | <<locked>> | 88% | 54,099 psi | 89% | 2762 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 53,461 psi | 88% | 2756 fps | 98.3% |
| IMR 7828 SSC | <<locked>> | 96% | 53,490 psi | 88% | 2864 fps | 98.8% |
| Lovex S065 | <<locked>> | 86% | 55,042 psi | 90% | 2743 fps | 100% |
| Lovex S070 | <<locked>> | 86% | 53,142 psi | 87% | 2740 fps | 99.9% |
| Lovex S071ᴾ | <<locked>> | 100% | 53,171 psi | 87% | 2756 fps | 100% |
| Norma 204 | <<locked>> | 88% | 55,100 psi | 90% | 2812 fps | 99.5% |
| Norma 217ᴾ | <<locked>> | 100% | 36,970 psi | 61% | 2618 fps | 97.6% |
| Norma MRP | <<locked>> | 92% | 51,576 psi | 85% | 2848 fps | 99.9% |
| Norma URP | <<locked>> | 86% | 52,344 psi | 86% | 2756 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 53,882 psi | 88% | 2881 fps | 99.1% |
| Ramshot Hunter | <<locked>> | 88% | 54,476 psi | 89% | 2812 fps | 100% |
| Ramshot Magnum | <<locked>> | 98% | 52,141 psi | 86% | 2818 fps | 99.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,797 psi | 62% | 1765 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 55,042 psi | 90% | 2825 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 53,679 psi | 88% | 2795 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 51,764 psi | 85% | 2822 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 51,532 psi | 85% | 2920 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 46,282 psi | 76% | 2802 fps | 96.6% |
| Rottweil R 903 | <<locked>> | 82% | 54,288 psi | 89% | 2723 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 52,359 psi | 86% | 2743 fps | 98.5% |
| Rottweil R 905 | <<locked>> | 92% | 53,447 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% | 55,042 psi | 90% | 2743 fps | 100% |
| Shooters World SW4350 | <<locked>> | 86% | 53,142 psi | 87% | 2740 fps | 99.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 54,230 psi | 89% | 2595 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 54,375 psi | 89% | 2700 fps | 99.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 52,997 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% | 2740 fps | 98.1% |
| Somchem S365 | <<locked>> | 88% | 52,417 psi | 86% | 2759 fps | 100% |
| Somchem S385 | <<locked>> | 92% | 53,998 psi | 89% | 2779 fps | 99.8% |
| Vihtavuori N150 | <<locked>> | 82% | 51,779 psi | 85% | 2644 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 54,070 psi | 89% | 2746 fps | 100% |
| Vihtavuori N165 | <<locked>> | 96% | 53,432 psi | 88% | 2759 fps | 99.7% |
| Vihtavuori N550 | <<locked>> | 86% | 53,156 psi | 87% | 2753 fps | 100% |
| Vihtavuori N555 | <<locked>> | 92% | 51,837 psi | 85% | 2776 fps | 100% |
| Vihtavuori N560 | <<locked>> | 92% | 51,605 psi | 85% | 2841 fps | 98.2% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 54,665 psi | 90% | 2877 fps | 98.8% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 47,776 psi | 78% | 2812 fps | 96.4% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 53,345 psi | 88% | 2707 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 52,025 psi | 85% | 2772 fps | 99.9% |
| Winchester StaBALL HD | <<locked>> | 98% | 53,374 psi | 88% | 2930 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% | 32,532 psi | 53% | 2372 fps | 97.3% |
| Accurate 4350 | <<locked>> | 80% | 43,787 psi | 72% | 2612 fps | 100% |
| Accurate High Country | <<locked>> | 82% | 37,695 psi | 62% | 2585 fps | 95.2% |
| Accurate MAGPRO | <<locked>> | 88% | 43,888 psi | 72% | 2703 fps | 95.7% |
| ADI AR 2209 | <<locked>> | 80% | 36,695 psi | 60% | 2493 fps | 95.8% |
| ADI AR 2213 | <<locked>> | 86% | 39,842 psi | 65% | 2592 fps | 95.5% |
| ADI AR 2217 | <<locked>> | 94% | 38,319 psi | 63% | 2556 fps | 95.1% |
| ADI AR 2225 | <<locked>> | 92% | 32,082 psi | 53% | 2457 fps | 96% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 36,941 psi | 61% | 2493 fps | 96% |
| Alliant Reloder-16 | <<locked>> | 80% | 41,989 psi | 69% | 2621 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 80% | 48,312 psi | 79% | 2733 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 36,608 psi | 60% | 2490 fps | 95.9% |
| Alliant Reloder-22 | <<locked>> | 82% | 34,679 psi | 57% | 2484 fps | 95.3% |
| Alliant Reloder-23 | <<locked>> | 80% | 31,299 psi | 51% | 2402 fps | 99.6% |
| Alliant Reloder-25 | <<locked>> | 80% | 27,383 psi | 45% | 2310 fps | 95.5% |
| Alliant Reloder-26 | <<locked>> | 80% | 33,837 psi | 56% | 2530 fps | 99% |
| Baschieri & Pellagri 109 | <<locked>> | 94% | 50,937 psi | 84% | 2736 fps | 95.4% |
| Bofors RP15 | <<locked>> | 84% | 34,563 psi | 57% | 2480 fps | 95.1% |
| Bofors RP30 | <<locked>> | 92% | 36,753 psi | 60% | 2569 fps | 95.3% |
| Bofors RP5 | <<locked>> | 82% | 34,679 psi | 57% | 2484 fps | 95.3% |
| Bofors RP7 | <<locked>> | 80% | 46,862 psi | 77% | 2618 fps | 99.1% |
| Hodgdon H1000 | <<locked>> | 90% | 36,709 psi | 60% | 2520 fps | 95.2% |
| Hodgdon H414 | <<locked>> | 80% | 45,469 psi | 75% | 2661 fps | 99.3% |
| Hodgdon H4350 | <<locked>> | 80% | 48,196 psi | 79% | 2674 fps | 98.9% |
| Hodgdon H4831 | <<locked>> | 86% | 42,699 psi | 70% | 2602 fps | 95.7% |
| Hodgdon H4831 SC | <<locked>> | 86% | 41,771 psi | 69% | 2582 fps | 95.5% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 39,624 psi | 65% | 2510 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 88% | 34,519 psi | 57% | 2556 fps | 95.8% |
| Hodgdon Superformance | <<locked>> | 80% | 44,788 psi | 74% | 2687 fps | 99.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,644 psi | 45% | 1539 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 42,351 psi | 70% | 2552 fps | 98.4% |
| IMR 4451 Enduron | <<locked>> | 80% | 48,225 psi | 79% | 2641 fps | 99.5% |
| IMR 4831 | <<locked>> | 80% | 41,756 psi | 69% | 2562 fps | 99.9% |
| IMR 4955 Enduron | <<locked>> | 84% | 41,640 psi | 68% | 2543 fps | 95.6% |
| IMR 7828 SSC | <<locked>> | 86% | 38,290 psi | 63% | 2572 fps | 95% |
| Lovex S065 | <<locked>> | 80% | 45,774 psi | 75% | 2595 fps | 99.8% |
| Lovex S070 | <<locked>> | 80% | 44,150 psi | 72% | 2585 fps | 99.2% |
| Lovex S071 | <<locked>> | 80% | 28,108 psi | 46% | 2257 fps | 95.4% |
| Norma 204 | <<locked>> | 80% | 42,090 psi | 69% | 2589 fps | 97.4% |
| Norma 217 | <<locked>> | 96% | 32,489 psi | 53% | 2503 fps | 95.7% |
| Norma MRP | 63.9 gr | 80% | 33,866 psi | 56% | 2493 fps | 96.6% |
| Norma URP | <<locked>> | 80% | 43,192 psi | 71% | 2605 fps | 100% |
| Ramshot Grand | <<locked>> | 86% | 37,840 psi | 62% | 2575 fps | 95.3% |
| Ramshot Hunter | <<locked>> | 80% | 41,858 psi | 69% | 2598 fps | 99.3% |
| Ramshot Magnum | <<locked>> | 86% | 33,721 psi | 55% | 2461 fps | 95.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,253 psi | 46% | 1575 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 51,300 psi | 84% | 2772 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 43,714 psi | 72% | 2638 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 41,872 psi | 69% | 2651 fps | 99.9% |
| ReloadSwiss RS 76 | <<locked>> | 86% | 31,372 psi | 52% | 2467 fps | 95.5% |
| ReloadSwiss RS 80 | <<locked>> | 98% | 43,120 psi | 71% | 2736 fps | 95.7% |
| Rottweil R 903 | <<locked>> | 80% | 50,937 psi | 84% | 2674 fps | 100% |
| Rottweil R 904 | <<locked>> | 80% | 38,130 psi | 63% | 2474 fps | 95.1% |
| Rottweil R 905 | <<locked>> | 80% | 35,969 psi | 59% | 2474 fps | 95.9% |
| Rottweil R 907 | <<locked>> | 80% | 46,862 psi | 77% | 2618 fps | 99.1% |
| Shooters World Long Rifle | <<locked>> | 80% | 45,774 psi | 75% | 2595 fps | 99.8% |
| Shooters World SW4350 | <<locked>> | 80% | 44,150 psi | 72% | 2585 fps | 99.2% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 51,126 psi | 84% | 2552 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 44,831 psi | 74% | 2546 fps | 99.2% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 35,650 psi | 59% | 2470 fps | 95.8% |
| Somchem S355 | <<locked>> | 80% | 50,734 psi | 83% | 2667 fps | 100% |
| Somchem S361 | <<locked>> | 82% | 41,220 psi | 68% | 2516 fps | 95.2% |
| Somchem S365 | <<locked>> | 80% | 39,972 psi | 66% | 2562 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 36,521 psi | 60% | 2461 fps | 97% |
| Vihtavuori N150 | <<locked>> | 80% | 48,602 psi | 80% | 2595 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 44,483 psi | 73% | 2598 fps | 100% |
| Vihtavuori N165 | <<locked>> | 82% | 33,779 psi | 55% | 2392 fps | 95.6% |
| Vihtavuori N550 | <<locked>> | 80% | 43,976 psi | 72% | 2605 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 35,056 psi | 58% | 2474 fps | 99.5% |
| Vihtavuori N560 | 68.7 gr | 86% | 42,003 psi | 69% | 2661 fps | 95.9% |
| Vihtavuori N565 | <<locked>> | 90% | 38,943 psi | 64% | 2589 fps | 95.2% |
| Vihtavuori N568 | <<locked>> | 98% | 44,556 psi | 73% | 2749 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 43,482 psi | 71% | 2562 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 45,643 psi | 75% | 2664 fps | 99.4% |
| Winchester StaBALL HD | 63.2 gr | 80% | 27,688 psi | 45% | 2415 fps | 99.7% |
| Winchester Supreme 780 | <<locked>> | 82% | 35,621 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 76 powders for .300 Blaser Mag. loaded with the .308 | 200gr | Speer Hot-Cor. Winchester StaBALL HD delivers the highest muzzle velocity at 2,930 fps; across all powders the maximum-charge window runs from 1,722 fps to 2,930 fps. ADI AR 2217 gives the best case fill at 100 %, and 76 of the 76 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 1:13.5 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, Norma MRP, Vihtavuori N560 rank at the top here: for .300 Blaser Mag. with the .308 | 200gr | Speer Hot-Cor 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.