Load Specifications
Load data in caliber .300 Blaser Mag. with .308 | 200gr | Berger Hybrid Target bullet and 80 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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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 2700 | <<locked>> | 82% | 51,576 psi | 85% | 2641 fps | 99.4% |
| Accurate 3100 | <<locked>> | 96% | 53,040 psi | 87% | 2743 fps | 100% |
| Accurate 4350 | <<locked>> | 88% | 54,810 psi | 90% | 2779 fps | 100% |
| Accurate MAGPRO | <<locked>> | 96% | 51,982 psi | 85% | 2831 fps | 96.8% |
| ADI AR 2208 | <<locked>> | 82% | 53,272 psi | 87% | 2690 fps | 100% |
| ADI AR 2209 | <<locked>> | 92% | 52,054 psi | 85% | 2779 fps | 99.1% |
| ADI AR 2213 | <<locked>> | 96% | 53,316 psi | 88% | 2835 fps | 98.5% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 44,367 psi | 73% | 2667 fps | 96.8% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 39,291 psi | 65% | 2631 fps | 98.5% |
| Alliant Power Pro Varmint | <<locked>> | 92% | 52,417 psi | 86% | 2779 fps | 99.2% |
| Alliant Power Pro Varmint | <<locked>> | 92% | 52,417 psi | 86% | 2779 fps | 99.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 54,389 psi | 89% | 2713 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 88% | 52,083 psi | 86% | 2782 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 84% | 53,098 psi | 87% | 2799 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 94% | 54,984 psi | 90% | 2818 fps | 99.4% |
| Alliant Reloder-22 | <<locked>> | 96% | 52,895 psi | 87% | 2831 fps | 99.4% |
| Alliant Reloder-23 | <<locked>> | 98% | 53,679 psi | 88% | 2805 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 49,414 psi | 81% | 2805 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 94% | 53,722 psi | 88% | 2894 fps | 100% |
| Bofors RP15 | <<locked>> | 98% | 51,866 psi | 85% | 2815 fps | 99.2% |
| Bofors RP30ᴾ | <<locked>> | 100% | 45,353 psi | 74% | 2740 fps | 97.7% |
| Bofors RP5 | <<locked>> | 96% | 52,895 psi | 87% | 2831 fps | 99.4% |
| Bofors RP7 | <<locked>> | 86% | 54,505 psi | 89% | 2730 fps | 99.7% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 45,556 psi | 75% | 2697 fps | 97.8% |
| Hodgdon H414 | <<locked>> | 84% | 54,085 psi | 89% | 2792 fps | 99.9% |
| Hodgdon H4350 | <<locked>> | 88% | 54,621 psi | 90% | 2769 fps | 99.5% |
| Hodgdon H4831 | <<locked>> | 98% | 52,562 psi | 86% | 2762 fps | 97.8% |
| Hodgdon H4831 SC | <<locked>> | 94% | 52,315 psi | 86% | 2759 fps | 97.7% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 52,431 psi | 86% | 2707 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 48,443 psi | 80% | 2861 fps | 99.5% |
| Hodgdon Superformance | <<locked>> | 86% | 53,069 psi | 87% | 2815 fps | 99.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,753 psi | 60% | 1703 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 52,591 psi | 86% | 2671 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 84% | 54,462 psi | 89% | 2703 fps | 99.9% |
| IMR 4350 | <<locked>> | 88% | 52,417 psi | 86% | 2717 fps | 99.6% |
| IMR 4451 Enduron | <<locked>> | 84% | 52,547 psi | 86% | 2700 fps | 99.8% |
| IMR 4831 | <<locked>> | 92% | 52,968 psi | 87% | 2740 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 54,665 psi | 90% | 2759 fps | 98.2% |
| IMR 7828 SSC | <<locked>> | 96% | 54,781 psi | 90% | 2871 fps | 98.8% |
| Lovex S065 | <<locked>> | 86% | 53,098 psi | 87% | 2700 fps | 100% |
| Lovex S070 | <<locked>> | 88% | 54,360 psi | 89% | 2743 fps | 99.9% |
| Lovex S071ᴾ | <<locked>> | 100% | 50,444 psi | 83% | 2707 fps | 100% |
| Norma 204 | <<locked>> | 88% | 52,808 psi | 87% | 2766 fps | 99.1% |
| Norma 217ᴾ | <<locked>> | 100% | 34,824 psi | 57% | 2556 fps | 96.5% |
| Norma MRP | <<locked>> | 94% | 52,330 psi | 86% | 2851 fps | 99.9% |
| Norma URP | <<locked>> | 88% | 53,476 psi | 88% | 2762 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 54,592 psi | 90% | 2877 fps | 99% |
| Ramshot Hunter | <<locked>> | 88% | 52,199 psi | 86% | 2769 fps | 100% |
| Ramshot Magnum | <<locked>> | 96% | 51,242 psi | 84% | 2795 fps | 99.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,565 psi | 62% | 1745 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 52,634 psi | 86% | 2785 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 54,723 psi | 90% | 2802 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 52,910 psi | 87% | 2831 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 48,602 psi | 80% | 2858 fps | 99.9% |
| Rottweil R 903 | <<locked>> | 82% | 52,185 psi | 86% | 2684 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 53,606 psi | 88% | 2749 fps | 98.5% |
| Rottweil R 905 | <<locked>> | 94% | 54,418 psi | 89% | 2808 fps | 99.5% |
| Rottweil R 907 | <<locked>> | 86% | 54,505 psi | 89% | 2730 fps | 99.7% |
| Shooters World Long Rifle | <<locked>> | 86% | 53,098 psi | 87% | 2700 fps | 100% |
| Shooters World SW4350 | <<locked>> | 88% | 54,360 psi | 89% | 2743 fps | 99.9% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 53,447 psi | 88% | 2740 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 52,489 psi | 86% | 2562 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 52,402 psi | 86% | 2654 fps | 99.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 53,969 psi | 89% | 2805 fps | 99.4% |
| Somchem S355 | <<locked>> | 82% | 51,996 psi | 85% | 2677 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 51,590 psi | 85% | 2690 fps | 97.5% |
| Somchem S365 | <<locked>> | 90% | 53,214 psi | 87% | 2766 fps | 100% |
| Somchem S385 | <<locked>> | 94% | 55,071 psi | 90% | 2782 fps | 99.8% |
| Unknown powder | <<locked>> | 86% | 53,969 psi | 89% | 2766 fps | 100% |
| Vihtavuori N150 | <<locked>> | 84% | 53,040 psi | 87% | 2651 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 52,054 psi | 85% | 2707 fps | 100% |
| Vihtavuori N165 | <<locked>> | 98% | 54,476 psi | 89% | 2762 fps | 99.6% |
| Vihtavuori N550 | <<locked>> | 88% | 54,433 psi | 89% | 2762 fps | 100% |
| Vihtavuori N555 | <<locked>> | 94% | 52,736 psi | 87% | 2782 fps | 100% |
| Vihtavuori N560 | <<locked>> | 94% | 52,446 psi | 86% | 2844 fps | 98.1% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 51,764 psi | 85% | 2822 fps | 98.2% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 54,679 psi | 90% | 2717 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 54,085 psi | 89% | 2792 fps | 99.9% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 53,737 psi | 88% | 2933 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 52,721 psi | 87% | 2746 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 2700 | <<locked>> | 80% | 48,428 psi | 80% | 2589 fps | 99% |
| Accurate 3100 | <<locked>> | 80% | 30,922 psi | 51% | 2326 fps | 96.5% |
| Accurate 4350 | <<locked>> | 80% | 41,771 psi | 69% | 2569 fps | 99.9% |
| Accurate MAGPRO | 71.8 gr | 92% | 45,208 psi | 74% | 2713 fps | 95.1% |
| ADI AR 2208 | <<locked>> | 80% | 50,169 psi | 82% | 2644 fps | 100% |
| ADI AR 2209 | <<locked>> | 82% | 37,565 psi | 62% | 2503 fps | 95.9% |
| ADI AR 2213 | <<locked>> | 88% | 40,756 psi | 67% | 2602 fps | 95.5% |
| ADI AR 2217 | <<locked>> | 96% | 38,972 psi | 64% | 2552 fps | 95% |
| ADI AR 2225 | <<locked>> | 94% | 32,576 psi | 53% | 2461 fps | 95.9% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 35,346 psi | 58% | 2448 fps | 95.1% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 35,346 psi | 58% | 2448 fps | 95.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 51,184 psi | 84% | 2667 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 40,277 psi | 66% | 2579 fps | 99.9% |
| Alliant Reloder-17 | <<locked>> | 80% | 46,064 psi | 76% | 2690 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 35,027 psi | 57% | 2441 fps | 95% |
| Alliant Reloder-22 | <<locked>> | 84% | 35,462 psi | 58% | 2497 fps | 95.4% |
| Alliant Reloder-23 | <<locked>> | 80% | 29,863 psi | 49% | 2359 fps | 99.2% |
| Alliant Reloder-25 | <<locked>> | 82% | 27,920 psi | 46% | 2316 fps | 95.5% |
| Alliant Reloder-26 | <<locked>> | 80% | 32,169 psi | 53% | 2480 fps | 98.4% |
| Bofors RP15 | <<locked>> | 86% | 35,186 psi | 58% | 2490 fps | 95.1% |
| Bofors RP30 | <<locked>> | 94% | 37,202 psi | 61% | 2569 fps | 95.2% |
| Bofors RP5 | <<locked>> | 84% | 35,462 psi | 58% | 2497 fps | 95.4% |
| Bofors RP7 | <<locked>> | 80% | 45,295 psi | 74% | 2575 fps | 98.7% |
| Hodgdon H1000 | <<locked>> | 94% | 37,565 psi | 62% | 2526 fps | 95.2% |
| Hodgdon H414 | <<locked>> | 80% | 47,253 psi | 78% | 2684 fps | 99.4% |
| Hodgdon H4350 | <<locked>> | 80% | 42,699 psi | 70% | 2562 fps | 97.7% |
| Hodgdon H4831 | <<locked>> | 92% | 43,323 psi | 71% | 2602 fps | 95.6% |
| Hodgdon H4831 SC | <<locked>> | 88% | 42,743 psi | 70% | 2592 fps | 95.5% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 37,869 psi | 62% | 2467 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 90% | 35,041 psi | 58% | 2559 fps | 95.7% |
| Hodgdon Superformance | <<locked>> | 80% | 42,525 psi | 70% | 2635 fps | 98.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,586 psi | 45% | 1522 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 49,472 psi | 81% | 2621 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 80% | 48,312 psi | 79% | 2605 fps | 99.4% |
| IMR 4350 | <<locked>> | 80% | 40,683 psi | 67% | 2510 fps | 97.9% |
| IMR 4451 Enduron | <<locked>> | 80% | 46,470 psi | 76% | 2598 fps | 99.2% |
| IMR 4831 | <<locked>> | 80% | 36,448 psi | 60% | 2448 fps | 99.4% |
| IMR 4955 Enduron | <<locked>> | 86% | 42,685 psi | 70% | 2552 fps | 95.6% |
| IMR 7828 SSC | <<locked>> | 86% | 39,117 psi | 64% | 2575 fps | 95% |
| Lovex S065 | <<locked>> | 80% | 44,208 psi | 73% | 2556 fps | 99.6% |
| Lovex S070 | <<locked>> | 80% | 42,395 psi | 70% | 2543 fps | 98.8% |
| Lovex S071 | <<locked>> | 82% | 28,442 psi | 47% | 2260 fps | 95.4% |
| Norma 204 | <<locked>> | 80% | 40,480 psi | 66% | 2543 fps | 96.7% |
| Norma 217 | <<locked>> | 98% | 32,735 psi | 54% | 2503 fps | 95.5% |
| Norma MRP | 61.3 gr | 80% | 32,227 psi | 53% | 2444 fps | 95.6% |
| Norma URP | <<locked>> | 80% | 41,292 psi | 68% | 2559 fps | 99.8% |
| Ramshot Grand | <<locked>> | 86% | 40,712 psi | 67% | 2625 fps | 96% |
| Ramshot Hunter | <<locked>> | 80% | 40,132 psi | 66% | 2556 fps | 98.9% |
| Ramshot Magnum | <<locked>> | 84% | 32,822 psi | 54% | 2428 fps | 95.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,195 psi | 46% | 1558 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 48,907 psi | 80% | 2733 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 41,684 psi | 68% | 2592 fps | 99.8% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 40,059 psi | 66% | 2605 fps | 99.6% |
| ReloadSwiss RS 76 | <<locked>> | 88% | 31,952 psi | 52% | 2474 fps | 95.4% |
| Rottweil R 903 | <<locked>> | 80% | 48,834 psi | 80% | 2635 fps | 100% |
| Rottweil R 904 | <<locked>> | 82% | 39,059 psi | 64% | 2484 fps | 95.1% |
| Rottweil R 905 | <<locked>> | 80% | 34,272 psi | 56% | 2428 fps | 95% |
| Rottweil R 907 | <<locked>> | 80% | 45,295 psi | 74% | 2575 fps | 98.7% |
| Shooters World Long Rifle | <<locked>> | 80% | 44,208 psi | 73% | 2556 fps | 99.6% |
| Shooters World SW4350 | <<locked>> | 80% | 42,395 psi | 70% | 2543 fps | 98.8% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 50,125 psi | 82% | 2690 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 49,574 psi | 81% | 2523 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 43,221 psi | 71% | 2503 fps | 98.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 82% | 36,390 psi | 60% | 2480 fps | 95.8% |
| Somchem S355 | <<locked>> | 80% | 48,950 psi | 80% | 2631 fps | 100% |
| Somchem S361 | <<locked>> | 84% | 42,322 psi | 69% | 2526 fps | 95.3% |
| Somchem S365 | <<locked>> | 80% | 37,942 psi | 62% | 2520 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 34,911 psi | 57% | 2415 fps | 96.2% |
| Unknown powder | <<locked>> | 80% | 44,237 psi | 73% | 2608 fps | 99.8% |
| Vihtavuori N150 | <<locked>> | 80% | 46,731 psi | 77% | 2559 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 42,627 psi | 70% | 2552 fps | 99.9% |
| Vihtavuori N165 | <<locked>> | 84% | 34,389 psi | 56% | 2398 fps | 95.6% |
| Vihtavuori N550 | <<locked>> | 80% | 42,061 psi | 69% | 2559 fps | 99.8% |
| Vihtavuori N555 | <<locked>> | 80% | 33,359 psi | 55% | 2428 fps | 99.1% |
| Vihtavuori N560 | 67.4 gr | 88% | 42,714 psi | 70% | 2667 fps | 95.8% |
| Vihtavuori N565 | <<locked>> | 92% | 39,523 psi | 65% | 2595 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 41,582 psi | 68% | 2520 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 47,253 psi | 78% | 2684 fps | 99.4% |
| Winchester StaBALL HD | <<locked>> | 80% | 26,440 psi | 43% | 2362 fps | 99.2% |
| Winchester Supreme 780 | <<locked>> | 82% | 37,072 psi | 61% | 2464 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 80 powders for .300 Blaser Mag. loaded with the .308 | 200gr | Berger Hybrid Target. Winchester StaBALL HD delivers the highest muzzle velocity at 2,933 fps; across all powders the maximum-charge window runs from 1,703 fps to 2,933 fps. ADI AR 2217 gives the best case fill at 100 %, and 80 of the 80 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (420 MPa), the top charges use 57–90 %, 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 | Berger Hybrid Target 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.