Load Specifications
Load data in caliber .300 Blaser Mag. with .308 | 205gr | Berger Elite Hunter bullet and 77 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Vihtavuori N560, Norma MRP and Accurate MAGPRO.
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>> | 96% | 53,751 psi | 88% | 2720 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 51,938 psi | 85% | 2700 fps | 100% |
| Accurate High Country | <<locked>> | 94% | 54,998 psi | 90% | 2864 fps | 99.1% |
| Accurate MAGPRO | <<locked>> | 94% | 51,967 psi | 85% | 2805 fps | 97.7% |
| ADI AR 2208 | <<locked>> | 82% | 53,809 psi | 88% | 2664 fps | 100% |
| ADI AR 2209 | <<locked>> | 92% | 52,620 psi | 86% | 2753 fps | 99.3% |
| ADI AR 2213 | <<locked>> | 96% | 53,722 psi | 88% | 2808 fps | 98.7% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 44,947 psi | 74% | 2648 fps | 97.3% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 39,856 psi | 65% | 2615 fps | 98.9% |
| Alliant Power Pro Varmint | <<locked>> | 92% | 52,997 psi | 87% | 2753 fps | 99.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 54,955 psi | 90% | 2684 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 88% | 52,837 psi | 87% | 2756 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 84% | 53,664 psi | 88% | 2766 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 92% | 52,330 psi | 86% | 2746 fps | 99.3% |
| Alliant Reloder-22 | <<locked>> | 96% | 53,388 psi | 88% | 2805 fps | 99.5% |
| Alliant Reloder-23 | <<locked>> | 98% | 54,418 psi | 89% | 2779 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 50,154 psi | 82% | 2782 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 94% | 54,360 psi | 89% | 2864 fps | 100% |
| Bofors RP15 | <<locked>> | 98% | 52,605 psi | 86% | 2792 fps | 99.4% |
| Bofors RP30ᴾ | <<locked>> | 100% | 46,108 psi | 76% | 2720 fps | 98.1% |
| Bofors RP5 | <<locked>> | 96% | 53,388 psi | 88% | 2805 fps | 99.5% |
| Bofors RP7 | <<locked>> | 86% | 54,926 psi | 90% | 2700 fps | 99.8% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 49,472 psi | 81% | 2733 fps | 98.8% |
| Hodgdon H414 | <<locked>> | 86% | 53,664 psi | 88% | 2753 fps | 99.9% |
| Hodgdon H4350 | <<locked>> | 84% | 53,185 psi | 87% | 2710 fps | 99.5% |
| Hodgdon H4831 | <<locked>> | 94% | 53,896 psi | 88% | 2749 fps | 98.2% |
| Hodgdon H4831 SC | <<locked>> | 94% | 52,968 psi | 87% | 2736 fps | 98% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 53,171 psi | 87% | 2680 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 49,139 psi | 81% | 2841 fps | 99.7% |
| Hodgdon Superformance | <<locked>> | 86% | 53,766 psi | 88% | 2789 fps | 99.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,840 psi | 60% | 1680 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 52,866 psi | 87% | 2687 fps | 99.7% |
| IMR 4451 Enduron | <<locked>> | 84% | 53,113 psi | 87% | 2674 fps | 99.9% |
| IMR 4831 | <<locked>> | 88% | 52,315 psi | 86% | 2694 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 51,982 psi | 85% | 2684 fps | 98% |
| IMR 7828 SSC | <<locked>> | 98% | 55,027 psi | 90% | 2838 fps | 99% |
| Lovex S065 | <<locked>> | 86% | 53,490 psi | 88% | 2671 fps | 100% |
| Lovex S070 | <<locked>> | 88% | 55,056 psi | 90% | 2720 fps | 100% |
| Lovex S071ᴾ | <<locked>> | 100% | 51,126 psi | 84% | 2680 fps | 100% |
| Norma 204 | <<locked>> | 88% | 53,403 psi | 88% | 2740 fps | 99.3% |
| Norma 217ᴾ | <<locked>> | 100% | 35,389 psi | 58% | 2543 fps | 97% |
| Norma MRP | <<locked>> | 94% | 53,084 psi | 87% | 2828 fps | 99.9% |
| Norma URP | <<locked>> | 88% | 54,201 psi | 89% | 2736 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 51,880 psi | 85% | 2802 fps | 98.8% |
| Ramshot Hunter | <<locked>> | 88% | 52,736 psi | 87% | 2740 fps | 100% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 53,708 psi | 88% | 2795 fps | 99.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,666 psi | 62% | 1719 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 53,171 psi | 87% | 2756 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 51,779 psi | 85% | 2723 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 53,505 psi | 88% | 2802 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 49,226 psi | 81% | 2835 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 44,338 psi | 73% | 2720 fps | 96% |
| Rottweil R 903 | <<locked>> | 82% | 52,547 psi | 86% | 2651 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 54,114 psi | 89% | 2723 fps | 98.7% |
| Rottweil R 905 | <<locked>> | 94% | 55,071 psi | 90% | 2782 fps | 99.6% |
| Rottweil R 907 | <<locked>> | 86% | 54,926 psi | 90% | 2700 fps | 99.8% |
| Shooters World Long Rifle | <<locked>> | 86% | 53,490 psi | 88% | 2671 fps | 100% |
| Shooters World SW4350 | <<locked>> | 88% | 55,056 psi | 90% | 2720 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 53,896 psi | 88% | 2707 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 52,953 psi | 87% | 2533 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 52,779 psi | 87% | 2628 fps | 99.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 54,621 psi | 90% | 2779 fps | 99.6% |
| Somchem S355 | <<locked>> | 82% | 52,576 psi | 86% | 2648 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 52,127 psi | 86% | 2664 fps | 97.8% |
| Somchem S365 | <<locked>> | 90% | 53,867 psi | 88% | 2733 fps | 100% |
| Somchem S385 | <<locked>> | 92% | 52,185 psi | 86% | 2707 fps | 99.7% |
| Vihtavuori N150 | <<locked>> | 84% | 53,650 psi | 88% | 2621 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 52,533 psi | 86% | 2677 fps | 100% |
| Vihtavuori N165 | <<locked>> | 98% | 54,926 psi | 90% | 2736 fps | 99.7% |
| Vihtavuori N550 | <<locked>> | 88% | 54,984 psi | 90% | 2733 fps | 100% |
| Vihtavuori N555 | <<locked>> | 94% | 53,388 psi | 88% | 2756 fps | 100% |
| Vihtavuori N560 | <<locked>> | 94% | 53,156 psi | 87% | 2822 fps | 98.4% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 52,591 psi | 86% | 2799 fps | 98.5% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 51,837 psi | 85% | 2641 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 53,911 psi | 89% | 2756 fps | 99.9% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 54,839 psi | 90% | 2910 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 51,938 psi | 85% | 2700 fps | 99.2% |
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% | 31,357 psi | 51% | 2306 fps | 96.9% |
| Accurate 4350 | <<locked>> | 80% | 42,322 psi | 69% | 2546 fps | 100% |
| Accurate High Country | <<locked>> | 84% | 38,856 psi | 64% | 2572 fps | 95.6% |
| Accurate MAGPRO | 68.1 gr | 88% | 42,177 psi | 69% | 2628 fps | 95.2% |
| ADI AR 2208 | <<locked>> | 80% | 50,633 psi | 83% | 2615 fps | 100% |
| ADI AR 2209 | <<locked>> | 80% | 35,549 psi | 58% | 2425 fps | 95.4% |
| ADI AR 2213 | <<locked>> | 86% | 38,667 psi | 63% | 2523 fps | 95% |
| ADI AR 2217 | <<locked>> | 96% | 39,407 psi | 65% | 2536 fps | 95.5% |
| ADI AR 2225 | <<locked>> | 92% | 30,937 psi | 51% | 2385 fps | 95.3% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 35,781 psi | 59% | 2428 fps | 95.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 51,721 psi | 85% | 2641 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 40,756 psi | 67% | 2552 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 80% | 46,731 psi | 77% | 2664 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 35,462 psi | 58% | 2421 fps | 95.5% |
| Alliant Reloder-22 | <<locked>> | 84% | 35,839 psi | 59% | 2477 fps | 95.8% |
| Alliant Reloder-23 | <<locked>> | 80% | 30,269 psi | 50% | 2339 fps | 99.4% |
| Alliant Reloder-25 | <<locked>> | 82% | 28,268 psi | 46% | 2303 fps | 96.1% |
| Alliant Reloder-26 | <<locked>> | 80% | 32,561 psi | 53% | 2461 fps | 98.7% |
| Bofors RP15 | <<locked>> | 86% | 35,563 psi | 58% | 2467 fps | 95.5% |
| Bofors RP30 | <<locked>> | 94% | 37,681 psi | 62% | 2549 fps | 95.7% |
| Bofors RP5 | <<locked>> | 84% | 35,839 psi | 59% | 2477 fps | 95.8% |
| Bofors RP7 | <<locked>> | 80% | 45,527 psi | 75% | 2549 fps | 98.9% |
| Hodgdon H1000 | <<locked>> | 92% | 37,797 psi | 62% | 2503 fps | 95.6% |
| Hodgdon H414 | <<locked>> | 80% | 44,005 psi | 72% | 2592 fps | 99.1% |
| Hodgdon H4350 | <<locked>> | 80% | 46,905 psi | 77% | 2605 fps | 98.7% |
| Hodgdon H4831 | <<locked>> | 86% | 41,278 psi | 68% | 2530 fps | 95.2% |
| Hodgdon H4831 SC | <<locked>> | 86% | 40,524 psi | 67% | 2513 fps | 95% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 38,348 psi | 63% | 2444 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 88% | 33,315 psi | 55% | 2480 fps | 95.1% |
| Hodgdon Superformance | <<locked>> | 80% | 43,221 psi | 71% | 2615 fps | 98.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,586 psi | 45% | 1499 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 41,147 psi | 68% | 2487 fps | 98.2% |
| IMR 4451 Enduron | <<locked>> | 80% | 46,934 psi | 77% | 2572 fps | 99.4% |
| IMR 4831 | <<locked>> | 80% | 40,393 psi | 66% | 2493 fps | 99.9% |
| IMR 4955 Enduron | <<locked>> | 84% | 40,509 psi | 67% | 2477 fps | 95.2% |
| IMR 7828 SSC | <<locked>> | 88% | 39,508 psi | 65% | 2556 fps | 95.5% |
| Lovex S065 | <<locked>> | 80% | 44,643 psi | 73% | 2530 fps | 99.7% |
| Lovex S070 | <<locked>> | 80% | 42,873 psi | 70% | 2520 fps | 99% |
| Lovex S071 | <<locked>> | 80% | 27,151 psi | 45% | 2195 fps | 95% |
| Norma 204 | <<locked>> | 80% | 40,770 psi | 67% | 2516 fps | 97% |
| Norma 217 | <<locked>> | 96% | 31,096 psi | 51% | 2428 fps | 95% |
| Norma MRP | 60.8 gr | 80% | 32,677 psi | 54% | 2428 fps | 96.1% |
| Norma URP | <<locked>> | 80% | 41,800 psi | 69% | 2536 fps | 99.9% |
| Ramshot Grand | <<locked>> | 88% | 39,189 psi | 64% | 2562 fps | 95.8% |
| Ramshot Hunter | <<locked>> | 80% | 40,495 psi | 66% | 2530 fps | 99.1% |
| Ramshot Magnum | <<locked>> | 86% | 32,489 psi | 53% | 2392 fps | 95.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,195 psi | 46% | 1535 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 49,588 psi | 81% | 2707 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 42,119 psi | 69% | 2566 fps | 99.9% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 40,480 psi | 66% | 2579 fps | 99.8% |
| ReloadSwiss RS 76 | <<locked>> | 88% | 32,372 psi | 53% | 2461 fps | 96% |
| ReloadSwiss RS 80 | <<locked>> | 98% | 41,191 psi | 68% | 2657 fps | 95% |
| Rottweil R 903 | <<locked>> | 80% | 49,400 psi | 81% | 2605 fps | 100% |
| Rottweil R 904 | <<locked>> | 82% | 39,334 psi | 65% | 2461 fps | 95.5% |
| Rottweil R 905 | <<locked>> | 80% | 34,722 psi | 57% | 2408 fps | 95.4% |
| Rottweil R 907 | <<locked>> | 80% | 45,527 psi | 75% | 2549 fps | 98.9% |
| Shooters World Long Rifle | <<locked>> | 80% | 44,643 psi | 73% | 2530 fps | 99.7% |
| Shooters World SW4350 | <<locked>> | 80% | 42,873 psi | 70% | 2520 fps | 99% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 50,488 psi | 83% | 2657 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 49,995 psi | 82% | 2493 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 43,656 psi | 72% | 2480 fps | 99% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 34,418 psi | 56% | 2402 fps | 95.3% |
| Somchem S355 | <<locked>> | 80% | 49,458 psi | 81% | 2602 fps | 100% |
| Somchem S361 | <<locked>> | 84% | 42,743 psi | 70% | 2503 fps | 95.6% |
| Somchem S365 | <<locked>> | 80% | 38,493 psi | 63% | 2497 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 35,389 psi | 58% | 2395 fps | 96.6% |
| Vihtavuori N150 | <<locked>> | 80% | 47,195 psi | 77% | 2530 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 43,134 psi | 71% | 2530 fps | 100% |
| Vihtavuori N165 | <<locked>> | 82% | 32,590 psi | 54% | 2326 fps | 95.1% |
| Vihtavuori N550 | <<locked>> | 80% | 42,583 psi | 70% | 2536 fps | 99.9% |
| Vihtavuori N555 | <<locked>> | 80% | 33,823 psi | 56% | 2408 fps | 99.4% |
| Vihtavuori N560 | 65.3 gr | 86% | 40,466 psi | 66% | 2589 fps | 95.3% |
| Vihtavuori N565 | <<locked>> | 92% | 40,103 psi | 66% | 2575 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 42,177 psi | 69% | 2497 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 44,208 psi | 73% | 2595 fps | 99.1% |
| Winchester StaBALL HD | <<locked>> | 80% | 26,701 psi | 44% | 2343 fps | 99.4% |
| Winchester Supreme 780 | <<locked>> | 82% | 34,316 psi | 56% | 2372 fps | 95% |
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 77 powders for .300 Blaser Mag. loaded with the .308 | 205gr | Berger Elite Hunter. Winchester StaBALL HD delivers the highest muzzle velocity at 2,910 fps; across all powders the maximum-charge window runs from 1,680 fps to 2,910 fps. ADI AR 2217 gives the best case fill at 100 %, and 77 of the 77 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (420 MPa), the top charges use 58–90 %, leaving at least 10 % headroom. The 205.0 gr projectile in 0.308" calls for a 1:11.0 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. Vihtavuori N560, Norma MRP, Accurate MAGPRO rank at the top here: for .300 Blaser Mag. with the .308 | 205gr | Berger Elite Hunter 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.