Load Specifications
Load data in caliber .300 Blaser Mag. with .308 | 200gr | NorthFork Bonded Core bullet and 74 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Norma MRP, Vihtavuori N560 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.
A valid access license is required to use the Personalized Load Calculator.
You can find more information in our FAQ: How can I use the Personalized Load Calculator?
Max Load - Barrel Length: 25.6"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 96% | 53,853 psi | 88% | 2756 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 51,851 psi | 85% | 2736 fps | 100% |
| Accurate MAGPRO | <<locked>> | 94% | 52,156 psi | 86% | 2844 fps | 97.5% |
| ADI AR 2208 | <<locked>> | 82% | 53,940 psi | 89% | 2703 fps | 100% |
| ADI AR 2209 | <<locked>> | 92% | 52,620 psi | 86% | 2789 fps | 99.2% |
| ADI AR 2213 | <<locked>> | 96% | 53,766 psi | 88% | 2844 fps | 98.6% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 44,962 psi | 74% | 2684 fps | 97.1% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 39,813 psi | 65% | 2644 fps | 98.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 55,027 psi | 90% | 2726 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 88% | 52,750 psi | 87% | 2792 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 84% | 53,751 psi | 88% | 2808 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 92% | 52,301 psi | 86% | 2779 fps | 99.2% |
| Alliant Reloder-22 | <<locked>> | 96% | 53,432 psi | 88% | 2841 fps | 99.4% |
| Alliant Reloder-23 | <<locked>> | 98% | 54,520 psi | 90% | 2815 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 50,111 psi | 82% | 2818 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 94% | 54,563 psi | 90% | 2907 fps | 100% |
| Bofors RP15 | <<locked>> | 98% | 52,388 psi | 86% | 2825 fps | 99.2% |
| Bofors RP30ᴾ | <<locked>> | 100% | 46,035 psi | 76% | 2753 fps | 97.9% |
| Bofors RP5 | <<locked>> | 96% | 53,432 psi | 88% | 2841 fps | 99.4% |
| Bofors RP7 | <<locked>> | 86% | 55,114 psi | 90% | 2743 fps | 99.8% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 49,603 psi | 81% | 2772 fps | 98.7% |
| Hodgdon H414 | <<locked>> | 86% | 53,766 psi | 88% | 2792 fps | 99.9% |
| Hodgdon H4350 | <<locked>> | 84% | 53,156 psi | 87% | 2746 fps | 99.4% |
| Hodgdon H4831 | <<locked>> | 94% | 53,998 psi | 89% | 2789 fps | 98.1% |
| Hodgdon H4831 SC | <<locked>> | 94% | 52,779 psi | 87% | 2769 fps | 97.9% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 53,069 psi | 87% | 2717 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 49,095 psi | 81% | 2877 fps | 99.6% |
| Hodgdon Superformance | <<locked>> | 86% | 53,853 psi | 88% | 2828 fps | 99.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,854 psi | 61% | 1709 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 52,968 psi | 87% | 2726 fps | 99.7% |
| IMR 4451 Enduron | <<locked>> | 84% | 53,127 psi | 87% | 2713 fps | 99.8% |
| IMR 4831 | <<locked>> | 88% | 52,431 psi | 86% | 2733 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 51,967 psi | 85% | 2720 fps | 97.8% |
| IMR 7828 SSC | <<locked>> | 96% | 51,648 psi | 85% | 2822 fps | 98.4% |
| Lovex S065 | <<locked>> | 86% | 53,447 psi | 88% | 2710 fps | 100% |
| Lovex S070 | <<locked>> | 88% | 54,940 psi | 90% | 2756 fps | 100% |
| Lovex S071ᴾ | <<locked>> | 100% | 51,227 psi | 84% | 2720 fps | 100% |
| Norma 204 | <<locked>> | 88% | 53,388 psi | 88% | 2776 fps | 99.2% |
| Norma 217ᴾ | <<locked>> | 100% | 35,389 psi | 58% | 2572 fps | 96.8% |
| Norma MRP | <<locked>> | 94% | 53,142 psi | 87% | 2864 fps | 99.9% |
| Norma URP | <<locked>> | 88% | 54,041 psi | 89% | 2772 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 51,837 psi | 85% | 2838 fps | 98.7% |
| Ramshot Hunter | <<locked>> | 88% | 52,750 psi | 87% | 2779 fps | 100% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 53,693 psi | 88% | 2835 fps | 99.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,666 psi | 62% | 1749 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 53,098 psi | 87% | 2792 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 51,793 psi | 85% | 2762 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 53,664 psi | 88% | 2841 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 49,400 psi | 81% | 2874 fps | 100% |
| Rottweil R 903 | <<locked>> | 82% | 52,634 psi | 86% | 2690 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 54,114 psi | 89% | 2759 fps | 98.6% |
| Rottweil R 905 | <<locked>> | 94% | 54,998 psi | 90% | 2822 fps | 99.5% |
| Rottweil R 907 | <<locked>> | 86% | 55,114 psi | 90% | 2743 fps | 99.8% |
| Shooters World Long Rifle | <<locked>> | 86% | 53,447 psi | 88% | 2710 fps | 100% |
| Shooters World SW4350 | <<locked>> | 88% | 54,940 psi | 90% | 2756 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 53,853 psi | 88% | 2746 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 53,142 psi | 87% | 2572 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 52,881 psi | 87% | 2667 fps | 99.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 54,549 psi | 90% | 2815 fps | 99.5% |
| Somchem S355 | <<locked>> | 82% | 52,402 psi | 86% | 2684 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 52,199 psi | 86% | 2703 fps | 97.7% |
| Somchem S365 | <<locked>> | 90% | 53,925 psi | 89% | 2772 fps | 100% |
| Somchem S385 | <<locked>> | 92% | 52,127 psi | 86% | 2743 fps | 99.6% |
| Vihtavuori N150 | <<locked>> | 84% | 53,650 psi | 88% | 2661 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 52,431 psi | 86% | 2717 fps | 100% |
| Vihtavuori N165 | <<locked>> | 98% | 54,926 psi | 90% | 2772 fps | 99.7% |
| Vihtavuori N550 | <<locked>> | 88% | 54,984 psi | 90% | 2772 fps | 100% |
| Vihtavuori N555 | <<locked>> | 94% | 53,316 psi | 88% | 2792 fps | 100% |
| Vihtavuori N560 | <<locked>> | 94% | 53,156 psi | 87% | 2858 fps | 98.3% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 52,446 psi | 86% | 2831 fps | 98.3% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 51,779 psi | 85% | 2680 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 53,983 psi | 89% | 2795 fps | 99.9% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 54,737 psi | 90% | 2943 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 52,011 psi | 85% | 2740 fps | 99.1% |
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% | 31,415 psi | 52% | 2339 fps | 96.7% |
| Accurate 4350 | <<locked>> | 80% | 42,395 psi | 70% | 2582 fps | 99.9% |
| Accurate MAGPRO | 69.4 gr | 88% | 42,119 psi | 69% | 2661 fps | 95% |
| ADI AR 2208 | <<locked>> | 80% | 50,589 psi | 83% | 2654 fps | 100% |
| ADI AR 2209 | <<locked>> | 80% | 35,636 psi | 59% | 2461 fps | 95.2% |
| ADI AR 2213 | <<locked>> | 88% | 41,205 psi | 68% | 2612 fps | 95.7% |
| ADI AR 2217 | <<locked>> | 96% | 39,479 psi | 65% | 2569 fps | 95.3% |
| ADI AR 2225 | <<locked>> | 92% | 31,038 psi | 51% | 2418 fps | 95.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 51,648 psi | 85% | 2677 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 40,669 psi | 67% | 2585 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 80% | 46,746 psi | 77% | 2703 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 35,520 psi | 58% | 2457 fps | 95.3% |
| Alliant Reloder-22 | <<locked>> | 84% | 35,781 psi | 59% | 2507 fps | 95.6% |
| Alliant Reloder-23 | <<locked>> | 80% | 30,226 psi | 50% | 2369 fps | 99.3% |
| Alliant Reloder-25 | <<locked>> | 82% | 28,152 psi | 46% | 2326 fps | 95.7% |
| Alliant Reloder-26 | <<locked>> | 80% | 32,489 psi | 53% | 2490 fps | 98.5% |
| Bofors RP15 | <<locked>> | 86% | 35,520 psi | 58% | 2497 fps | 95.3% |
| Bofors RP30 | <<locked>> | 94% | 37,811 psi | 62% | 2585 fps | 95.5% |
| Bofors RP5 | <<locked>> | 84% | 35,781 psi | 59% | 2507 fps | 95.6% |
| Bofors RP7 | <<locked>> | 80% | 45,643 psi | 75% | 2585 fps | 98.8% |
| Hodgdon H1000 | <<locked>> | 92% | 37,942 psi | 62% | 2539 fps | 95.4% |
| Hodgdon H414 | <<locked>> | 80% | 44,048 psi | 72% | 2628 fps | 99% |
| Hodgdon H4350 | <<locked>> | 80% | 46,775 psi | 77% | 2641 fps | 98.5% |
| Hodgdon H4831 | <<locked>> | 86% | 41,176 psi | 68% | 2562 fps | 95% |
| Hodgdon H4831 SC | <<locked>> | 88% | 43,221 psi | 71% | 2602 fps | 95.7% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 38,305 psi | 63% | 2477 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 90% | 35,578 psi | 58% | 2575 fps | 96% |
| Hodgdon Superformance | <<locked>> | 80% | 43,062 psi | 71% | 2648 fps | 98.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,586 psi | 45% | 1526 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 41,205 psi | 68% | 2523 fps | 98% |
| IMR 4451 Enduron | <<locked>> | 80% | 47,021 psi | 77% | 2612 fps | 99.3% |
| IMR 4831 | <<locked>> | 80% | 40,480 psi | 66% | 2533 fps | 99.8% |
| IMR 4955 Enduron | <<locked>> | 84% | 40,495 psi | 66% | 2510 fps | 95% |
| IMR 7828 SSC | <<locked>> | 88% | 39,566 psi | 65% | 2589 fps | 95.3% |
| Lovex S065 | <<locked>> | 80% | 44,570 psi | 73% | 2562 fps | 99.7% |
| Lovex S070 | <<locked>> | 80% | 42,757 psi | 70% | 2549 fps | 98.9% |
| Lovex S071 | <<locked>> | 82% | 28,964 psi | 48% | 2274 fps | 95.7% |
| Norma 204 | <<locked>> | 80% | 40,799 psi | 67% | 2552 fps | 96.8% |
| Norma 217 | <<locked>> | 98% | 33,098 psi | 54% | 2513 fps | 95.8% |
| Norma MRP | 62 gr | 80% | 32,706 psi | 54% | 2461 fps | 95.9% |
| Norma URP | <<locked>> | 80% | 41,698 psi | 68% | 2569 fps | 99.9% |
| Ramshot Grand | <<locked>> | 88% | 39,160 psi | 64% | 2595 fps | 95.5% |
| Ramshot Hunter | <<locked>> | 80% | 40,524 psi | 67% | 2566 fps | 99% |
| Ramshot Magnum | <<locked>> | 86% | 32,474 psi | 53% | 2421 fps | 95% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,195 psi | 46% | 1565 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 49,574 psi | 81% | 2743 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 42,090 psi | 69% | 2598 fps | 99.8% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 40,611 psi | 67% | 2618 fps | 99.7% |
| ReloadSwiss RS 76 | <<locked>> | 88% | 32,416 psi | 53% | 2490 fps | 95.7% |
| Rottweil R 903 | <<locked>> | 80% | 49,298 psi | 81% | 2641 fps | 100% |
| Rottweil R 904 | <<locked>> | 82% | 39,407 psi | 65% | 2493 fps | 95.3% |
| Rottweil R 905 | <<locked>> | 80% | 34,650 psi | 57% | 2438 fps | 95.2% |
| Rottweil R 907 | <<locked>> | 80% | 45,643 psi | 75% | 2585 fps | 98.8% |
| Shooters World Long Rifle | <<locked>> | 80% | 44,570 psi | 73% | 2562 fps | 99.7% |
| Shooters World SW4350 | <<locked>> | 80% | 42,757 psi | 70% | 2549 fps | 98.9% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 50,502 psi | 83% | 2697 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 50,009 psi | 82% | 2530 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 43,569 psi | 72% | 2513 fps | 98.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 34,330 psi | 56% | 2431 fps | 95% |
| Somchem S355 | <<locked>> | 80% | 49,385 psi | 81% | 2638 fps | 100% |
| Somchem S361 | <<locked>> | 84% | 42,772 psi | 70% | 2536 fps | 95.5% |
| Somchem S365 | <<locked>> | 80% | 38,566 psi | 63% | 2533 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 35,273 psi | 58% | 2425 fps | 96.4% |
| Vihtavuori N150 | <<locked>> | 80% | 47,108 psi | 77% | 2566 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 43,207 psi | 71% | 2566 fps | 99.9% |
| Vihtavuori N165 | <<locked>> | 84% | 34,708 psi | 57% | 2408 fps | 95.7% |
| Vihtavuori N550 | <<locked>> | 80% | 42,598 psi | 70% | 2569 fps | 99.8% |
| Vihtavuori N555 | <<locked>> | 80% | 33,736 psi | 55% | 2438 fps | 99.2% |
| Vihtavuori N560 | 66.6 gr | 86% | 40,495 psi | 66% | 2621 fps | 95.1% |
| Vihtavuori N565 | <<locked>> | 92% | 40,016 psi | 66% | 2605 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 42,105 psi | 69% | 2530 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 44,222 psi | 73% | 2628 fps | 99% |
| Winchester StaBALL HD | <<locked>> | 80% | 26,716 psi | 44% | 2372 fps | 99.3% |
| Winchester Supreme 780 | <<locked>> | 84% | 36,883 psi | 61% | 2461 fps | 95.8% |
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 81 powders for .300 Blaser Mag. loaded with the .308 | 200gr | NorthFork Bonded Core. Winchester StaBALL HD delivers the highest muzzle velocity at 2,943 fps; across all powders the maximum-charge window runs from 1,709 fps to 2,943 fps. ADI AR 2217 gives the best case fill at 100 %, and 81 of the 81 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 200.0 gr projectile in 0.308" calls for a 1:12.0 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. Norma MRP, Vihtavuori N560, Accurate MAGPRO rank at the top here: for .300 Blaser Mag. with the .308 | 200gr | NorthFork Bonded Core they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, IMR 7977 Enduron, IMR 8133 Enduron, Vihtavuori N170 burn incompletely and react more sensitively to barrel length and temperature. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.