Load Specifications
Load data in caliber .300 Blaser Mag. with .308 | 200gr | Frontier PH HPFB bullet and 78 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.
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Max Load - Barrel Length: 25.6"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 96% | 52,417 psi | 86% | 2730 fps | 100% |
| Accurate 4350 | <<locked>> | 88% | 54,346 psi | 89% | 2769 fps | 100% |
| Accurate MAGPRO | <<locked>> | 96% | 54,447 psi | 89% | 2874 fps | 97.8% |
| ADI AR 2208 | <<locked>> | 82% | 53,069 psi | 87% | 2684 fps | 100% |
| ADI AR 2209 | <<locked>> | 94% | 55,071 psi | 90% | 2822 fps | 99.4% |
| ADI AR 2213 | <<locked>> | 96% | 52,518 psi | 86% | 2815 fps | 98.3% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 43,947 psi | 72% | 2654 fps | 96.6% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 38,870 psi | 64% | 2618 fps | 98.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 53,867 psi | 88% | 2703 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 90% | 54,998 psi | 90% | 2818 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 84% | 52,591 psi | 86% | 2789 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 94% | 54,389 psi | 89% | 2805 fps | 99.3% |
| Alliant Reloder-22 | <<locked>> | 96% | 52,040 psi | 85% | 2815 fps | 99.2% |
| Alliant Reloder-23 | <<locked>> | 98% | 53,011 psi | 87% | 2792 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 48,907 psi | 80% | 2795 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 94% | 53,026 psi | 87% | 2881 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 98% | 55,042 psi | 90% | 2782 fps | 95.9% |
| Bofors RP15ᴾ | <<locked>> | 100% | 54,607 psi | 90% | 2854 fps | 99.4% |
| Bofors RP3 | <<locked>> | 82% | 54,897 psi | 90% | 2720 fps | 100% |
| Bofors RP30ᴾ | <<locked>> | 100% | 44,817 psi | 74% | 2726 fps | 97.5% |
| Bofors RP5 | <<locked>> | 96% | 52,040 psi | 85% | 2815 fps | 99.2% |
| Bofors RP7 | <<locked>> | 86% | 54,099 psi | 89% | 2717 fps | 99.7% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 48,327 psi | 79% | 2740 fps | 98.3% |
| Hodgdon H380 | <<locked>> | 82% | 54,955 psi | 90% | 2740 fps | 100% |
| Hodgdon H414 | <<locked>> | 86% | 52,750 psi | 87% | 2769 fps | 99.8% |
| Hodgdon H4350 | <<locked>> | 84% | 52,127 psi | 86% | 2723 fps | 99.2% |
| Hodgdon H4831 | <<locked>> | 94% | 52,678 psi | 86% | 2759 fps | 97.7% |
| Hodgdon H4831 SC | <<locked>> | 94% | 51,735 psi | 85% | 2746 fps | 97.5% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 51,967 psi | 85% | 2697 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 47,935 psi | 79% | 2848 fps | 99.4% |
| Hodgdon Superformance | <<locked>> | 86% | 52,431 psi | 86% | 2802 fps | 99.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,811 psi | 60% | 1699 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 51,808 psi | 85% | 2703 fps | 99.5% |
| IMR 4451 Enduron | <<locked>> | 84% | 52,127 psi | 86% | 2690 fps | 99.7% |
| IMR 4831 | <<locked>> | 90% | 54,679 psi | 90% | 2759 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 54,331 psi | 89% | 2749 fps | 98.1% |
| IMR 7828 SSC | <<locked>> | 98% | 53,954 psi | 89% | 2851 fps | 98.6% |
| Lovex S065 | <<locked>> | 86% | 52,663 psi | 86% | 2690 fps | 100% |
| Lovex S070 | <<locked>> | 88% | 53,940 psi | 89% | 2733 fps | 99.9% |
| Lovex S071ᴾ | <<locked>> | 100% | 49,835 psi | 82% | 2690 fps | 99.9% |
| Norma 204 | <<locked>> | 88% | 52,460 psi | 86% | 2756 fps | 99% |
| Norma 217ᴾ | <<locked>> | 100% | 34,403 psi | 56% | 2543 fps | 96.2% |
| Norma MRP | <<locked>> | 94% | 51,706 psi | 85% | 2838 fps | 99.8% |
| Norma URP | <<locked>> | 88% | 52,997 psi | 87% | 2753 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 54,302 psi | 89% | 2867 fps | 99% |
| Ramshot Hunter | <<locked>> | 88% | 51,764 psi | 85% | 2759 fps | 100% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 52,243 psi | 86% | 2805 fps | 99.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,623 psi | 62% | 1742 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 54,665 psi | 90% | 2726 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 51,880 psi | 85% | 2772 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 54,041 psi | 89% | 2789 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 52,243 psi | 86% | 2815 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 47,950 psi | 79% | 2841 fps | 99.9% |
| Rottweil R 903 | <<locked>> | 84% | 55,013 psi | 90% | 2717 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 52,997 psi | 87% | 2736 fps | 98.3% |
| Rottweil R 905 | <<locked>> | 94% | 53,824 psi | 88% | 2795 fps | 99.4% |
| Rottweil R 907 | <<locked>> | 86% | 54,099 psi | 89% | 2717 fps | 99.7% |
| Shooters World Long Rifle | <<locked>> | 86% | 52,663 psi | 86% | 2690 fps | 100% |
| Shooters World SW4350 | <<locked>> | 88% | 53,940 psi | 89% | 2733 fps | 99.9% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 52,997 psi | 87% | 2730 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 52,257 psi | 86% | 2556 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 51,982 psi | 85% | 2644 fps | 99.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 53,374 psi | 88% | 2792 fps | 99.3% |
| Somchem S355 | <<locked>> | 84% | 54,752 psi | 90% | 2713 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 54,447 psi | 89% | 2726 fps | 97.9% |
| Somchem S365 | <<locked>> | 90% | 52,750 psi | 87% | 2756 fps | 100% |
| Somchem S385 | <<locked>> | 94% | 54,462 psi | 89% | 2772 fps | 99.7% |
| Vihtavuori N150 | <<locked>> | 84% | 52,591 psi | 86% | 2641 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 54,897 psi | 90% | 2743 fps | 100% |
| Vihtavuori N165 | <<locked>> | 98% | 53,664 psi | 88% | 2746 fps | 99.5% |
| Vihtavuori N550 | <<locked>> | 88% | 54,056 psi | 89% | 2753 fps | 100% |
| Vihtavuori N555 | <<locked>> | 94% | 52,025 psi | 85% | 2769 fps | 100% |
| Vihtavuori N560 | <<locked>> | 94% | 51,808 psi | 85% | 2831 fps | 97.9% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 51,169 psi | 84% | 2808 fps | 98% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 54,114 psi | 89% | 2707 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 52,750 psi | 87% | 2769 fps | 99.8% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 52,982 psi | 87% | 2920 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 54,360 psi | 89% | 2766 fps | 99.3% |
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% | 30,661 psi | 50% | 2316 fps | 96.3% |
| Accurate 4350 | <<locked>> | 80% | 41,481 psi | 68% | 2559 fps | 99.8% |
| Accurate MAGPRO | 69.6 gr | 90% | 44,164 psi | 73% | 2697 fps | 95.4% |
| ADI AR 2208 | <<locked>> | 80% | 49,922 psi | 82% | 2638 fps | 100% |
| ADI AR 2209 | <<locked>> | 82% | 37,202 psi | 61% | 2490 fps | 95.6% |
| ADI AR 2213 | <<locked>> | 88% | 40,408 psi | 66% | 2589 fps | 95.2% |
| ADI AR 2217 | <<locked>> | 98% | 41,191 psi | 68% | 2598 fps | 95.7% |
| ADI AR 2225 | <<locked>> | 94% | 32,184 psi | 53% | 2444 fps | 95.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 50,705 psi | 83% | 2657 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 39,827 psi | 65% | 2566 fps | 99.9% |
| Alliant Reloder-17 | <<locked>> | 80% | 45,571 psi | 75% | 2680 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 82% | 37,028 psi | 61% | 2487 fps | 95.7% |
| Alliant Reloder-22 | <<locked>> | 84% | 34,954 psi | 57% | 2480 fps | 95.1% |
| Alliant Reloder-23 | <<locked>> | 80% | 29,501 psi | 48% | 2346 fps | 99.1% |
| Alliant Reloder-25 | <<locked>> | 82% | 27,615 psi | 45% | 2303 fps | 95.2% |
| Alliant Reloder-26 | <<locked>> | 80% | 31,662 psi | 52% | 2464 fps | 98.1% |
| Baschieri & Pellagri 109 | <<locked>> | 96% | 51,880 psi | 85% | 2730 fps | 95.1% |
| Bofors RP15 | <<locked>> | 88% | 37,086 psi | 61% | 2530 fps | 95.8% |
| Bofors RP3 | <<locked>> | 80% | 51,358 psi | 84% | 2671 fps | 100% |
| Bofors RP30 | <<locked>> | 96% | 39,262 psi | 64% | 2612 fps | 95.9% |
| Bofors RP5 | <<locked>> | 84% | 34,954 psi | 57% | 2480 fps | 95.1% |
| Bofors RP7 | <<locked>> | 80% | 44,831 psi | 74% | 2562 fps | 98.6% |
| Hodgdon H1000 | <<locked>> | 94% | 39,494 psi | 65% | 2566 fps | 95.8% |
| Hodgdon H380 | <<locked>> | 80% | 51,430 psi | 84% | 2690 fps | 100% |
| Hodgdon H414 | <<locked>> | 80% | 43,192 psi | 71% | 2605 fps | 98.8% |
| Hodgdon H4350 | <<locked>> | 80% | 45,948 psi | 75% | 2618 fps | 98.3% |
| Hodgdon H4831 | <<locked>> | 88% | 43,163 psi | 71% | 2595 fps | 95.5% |
| Hodgdon H4831 SC | <<locked>> | 88% | 42,366 psi | 70% | 2579 fps | 95.2% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 37,579 psi | 62% | 2461 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 90% | 34,737 psi | 57% | 2546 fps | 95.4% |
| Hodgdon Superformance | <<locked>> | 80% | 42,148 psi | 69% | 2625 fps | 98.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,557 psi | 45% | 1516 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 40,292 psi | 66% | 2497 fps | 97.7% |
| IMR 4451 Enduron | <<locked>> | 80% | 46,238 psi | 76% | 2592 fps | 99.1% |
| IMR 4831 | <<locked>> | 80% | 39,610 psi | 65% | 2510 fps | 99.7% |
| IMR 4955 Enduron | <<locked>> | 86% | 42,351 psi | 70% | 2543 fps | 95.4% |
| IMR 7828 SSC | <<locked>> | 90% | 41,292 psi | 68% | 2621 fps | 95.7% |
| Lovex S065 | <<locked>> | 80% | 43,729 psi | 72% | 2543 fps | 99.5% |
| Lovex S070 | <<locked>> | 80% | 41,959 psi | 69% | 2530 fps | 98.7% |
| Lovex S071 | <<locked>> | 82% | 28,195 psi | 46% | 2251 fps | 95.2% |
| Norma 204 | <<locked>> | 80% | 40,045 psi | 66% | 2530 fps | 96.5% |
| Norma 217 | <<locked>> | 98% | 32,314 psi | 53% | 2487 fps | 95.2% |
| Norma MRP | 60.7 gr | 80% | 31,879 psi | 52% | 2434 fps | 95.4% |
| Norma URP | <<locked>> | 80% | 40,814 psi | 67% | 2549 fps | 99.8% |
| Ramshot Grand | <<locked>> | 88% | 38,174 psi | 63% | 2566 fps | 95% |
| Ramshot Hunter | <<locked>> | 80% | 39,726 psi | 65% | 2543 fps | 98.8% |
| Ramshot Magnum | <<locked>> | 88% | 33,910 psi | 56% | 2451 fps | 95.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,166 psi | 46% | 1555 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 51,300 psi | 84% | 2674 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 48,356 psi | 79% | 2723 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 41,075 psi | 67% | 2575 fps | 99.7% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 39,697 psi | 65% | 2592 fps | 99.6% |
| ReloadSwiss RS 76 | <<locked>> | 88% | 31,546 psi | 52% | 2457 fps | 95% |
| Rottweil R 903 | <<locked>> | 80% | 48,341 psi | 79% | 2621 fps | 100% |
| Rottweil R 904 | <<locked>> | 84% | 41,162 psi | 68% | 2523 fps | 95.7% |
| Rottweil R 905 | <<locked>> | 82% | 36,303 psi | 60% | 2470 fps | 95.7% |
| Rottweil R 907 | <<locked>> | 80% | 44,831 psi | 74% | 2562 fps | 98.6% |
| Shooters World Long Rifle | <<locked>> | 80% | 43,729 psi | 72% | 2543 fps | 99.5% |
| Shooters World SW4350 | <<locked>> | 80% | 41,959 psi | 69% | 2530 fps | 98.7% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 49,661 psi | 82% | 2677 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 49,066 psi | 81% | 2510 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 42,815 psi | 70% | 2490 fps | 98.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 82% | 35,969 psi | 59% | 2467 fps | 95.6% |
| Somchem S355 | <<locked>> | 80% | 48,443 psi | 80% | 2618 fps | 100% |
| Somchem S361 | <<locked>> | 84% | 41,829 psi | 69% | 2513 fps | 95% |
| Somchem S365 | <<locked>> | 80% | 37,463 psi | 62% | 2507 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 34,534 psi | 57% | 2402 fps | 95.9% |
| Vihtavuori N150 | <<locked>> | 80% | 46,238 psi | 76% | 2546 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 42,351 psi | 70% | 2546 fps | 99.9% |
| Vihtavuori N165 | <<locked>> | 84% | 34,040 psi | 56% | 2388 fps | 95.3% |
| Vihtavuori N550 | <<locked>> | 80% | 41,626 psi | 68% | 2549 fps | 99.7% |
| Vihtavuori N555 | <<locked>> | 80% | 32,895 psi | 54% | 2415 fps | 99% |
| Vihtavuori N560 | 66.8 gr | 88% | 42,351 psi | 70% | 2657 fps | 95.6% |
| Vihtavuori N565 | <<locked>> | 94% | 41,727 psi | 69% | 2635 fps | 95.7% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 41,220 psi | 68% | 2510 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 43,192 psi | 71% | 2605 fps | 98.8% |
| Winchester StaBALL HD | <<locked>> | 80% | 26,150 psi | 43% | 2346 fps | 99% |
| Winchester Supreme 780 | <<locked>> | 84% | 36,013 psi | 59% | 2438 fps | 95.4% |
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 83 powders for .300 Blaser Mag. loaded with the .308 | 200gr | Frontier PH HPFB. Winchester StaBALL HD delivers the highest muzzle velocity at 2,920 fps; across all powders the maximum-charge window runs from 1,699 fps to 2,920 fps. ADI AR 2217 gives the best case fill at 100 %, and 83 of the 83 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (420 MPa), the top charges use 56–90 %, leaving at least 10 % headroom. The 200.0 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. Norma MRP, Vihtavuori N560, Accurate MAGPRO rank at the top here: for .300 Blaser Mag. with the .308 | 200gr | Frontier PH HPFB they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, IMR 8133 Enduron, Vihtavuori N170, Vihtavuori N570 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.