Load Specifications
Load data in caliber .300 Blaser Mag. with .308 | 200gr | Barnes TSX FB bullet and 82 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Accurate MAGPRO, Accurate High Country and Alliant Reloder-26.
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>> | 98% | 54,317 psi | 89% | 2762 fps | 100% |
| Accurate 4064 | <<locked>> | 82% | 55,013 psi | 90% | 2680 fps | 100% |
| Accurate 4350 | <<locked>> | 88% | 52,504 psi | 86% | 2746 fps | 100% |
| Accurate High Country | <<locked>> | 94% | 52,185 psi | 86% | 2854 fps | 98.5% |
| Accurate MAGPRO | <<locked>> | 96% | 52,823 psi | 87% | 2854 fps | 97.5% |
| ADI AR 2208 | <<locked>> | 84% | 55,085 psi | 90% | 2717 fps | 100% |
| ADI AR 2209 | <<locked>> | 94% | 53,708 psi | 88% | 2805 fps | 99.2% |
| ADI AR 2213 | <<locked>> | 98% | 55,114 psi | 90% | 2861 fps | 98.7% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 42,801 psi | 70% | 2635 fps | 96.2% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 37,507 psi | 62% | 2592 fps | 97.9% |
| Alliant Power Pro Varmint | <<locked>> | 94% | 53,925 psi | 89% | 2802 fps | 99.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 52,663 psi | 86% | 2690 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 90% | 53,809 psi | 88% | 2805 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 86% | 54,795 psi | 90% | 2822 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 94% | 53,229 psi | 87% | 2795 fps | 99.2% |
| Alliant Reloder-22 | <<locked>> | 98% | 54,389 psi | 89% | 2854 fps | 99.5% |
| Alliant Reloder-23 | <<locked>> | 98% | 51,416 psi | 84% | 2776 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 47,427 psi | 78% | 2772 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 94% | 51,256 psi | 84% | 2858 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 53,316 psi | 88% | 2838 fps | 99.3% |
| Bofors RP3 | <<locked>> | 82% | 53,214 psi | 87% | 2703 fps | 100% |
| Bofors RP30ᴾ | <<locked>> | 100% | 43,265 psi | 71% | 2703 fps | 97.1% |
| Bofors RP5 | <<locked>> | 98% | 54,389 psi | 89% | 2854 fps | 99.5% |
| Bofors RP7 | <<locked>> | 86% | 52,663 psi | 86% | 2700 fps | 99.6% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 47,166 psi | 77% | 2723 fps | 98% |
| Hodgdon H380 | <<locked>> | 82% | 53,635 psi | 88% | 2726 fps | 100% |
| Hodgdon H414 | <<locked>> | 88% | 54,853 psi | 90% | 2805 fps | 99.9% |
| Hodgdon H4350 | <<locked>> | 86% | 54,549 psi | 90% | 2766 fps | 99.4% |
| Hodgdon H4831 | <<locked>> | 94% | 51,561 psi | 85% | 2746 fps | 97.5% |
| Hodgdon H4831 SC | <<locked>> | 96% | 53,998 psi | 89% | 2785 fps | 97.9% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 54,128 psi | 89% | 2730 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 46,470 psi | 76% | 2825 fps | 99.2% |
| Hodgdon Superformance | <<locked>> | 86% | 51,227 psi | 84% | 2785 fps | 99.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,535 psi | 60% | 1696 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 54,505 psi | 89% | 2697 fps | 100% |
| IMR 4350 | <<locked>> | 90% | 53,925 psi | 89% | 2740 fps | 99.7% |
| IMR 4451 Enduron | <<locked>> | 86% | 54,346 psi | 89% | 2730 fps | 99.8% |
| IMR 4831 | <<locked>> | 90% | 53,301 psi | 88% | 2746 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 53,055 psi | 87% | 2733 fps | 97.9% |
| IMR 7828 SSC | <<locked>> | 98% | 52,547 psi | 86% | 2835 fps | 98.4% |
| Lovex S062 | <<locked>> | 82% | 54,853 psi | 90% | 2694 fps | 100% |
| Lovex S065 | <<locked>> | 88% | 54,433 psi | 89% | 2723 fps | 100% |
| Lovex S070 | <<locked>> | 88% | 52,431 psi | 86% | 2717 fps | 99.8% |
| Lovex S071ᴾ | <<locked>> | 100% | 48,225 psi | 79% | 2674 fps | 99.8% |
| Norma 204 | <<locked>> | 90% | 54,665 psi | 90% | 2792 fps | 99.2% |
| Norma MRP | <<locked>> | 96% | 54,027 psi | 89% | 2881 fps | 99.9% |
| Norma URP | <<locked>> | 90% | 55,114 psi | 90% | 2789 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 53,011 psi | 87% | 2854 fps | 98.8% |
| Ramshot Hunter | <<locked>> | 90% | 53,809 psi | 88% | 2795 fps | 100% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 50,908 psi | 84% | 2789 fps | 99.5% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,289 psi | 61% | 1736 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 53,548 psi | 88% | 2713 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 54,317 psi | 89% | 2808 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 52,634 psi | 86% | 2776 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 54,694 psi | 90% | 2854 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 46,659 psi | 77% | 2822 fps | 99.7% |
| Rottweil R 903 | <<locked>> | 84% | 53,563 psi | 88% | 2703 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 51,880 psi | 85% | 2720 fps | 98.2% |
| Rottweil R 905 | <<locked>> | 94% | 52,533 psi | 86% | 2779 fps | 99.2% |
| Rottweil R 907 | <<locked>> | 86% | 52,663 psi | 86% | 2700 fps | 99.6% |
| Shooters World Long Rifle | <<locked>> | 88% | 54,433 psi | 89% | 2723 fps | 100% |
| Shooters World Precision | <<locked>> | 82% | 54,853 psi | 90% | 2694 fps | 100% |
| Shooters World SW4350 | <<locked>> | 88% | 52,431 psi | 86% | 2717 fps | 99.8% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 55,114 psi | 90% | 2762 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 54,288 psi | 89% | 2585 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 54,056 psi | 89% | 2680 fps | 99.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 52,098 psi | 86% | 2776 fps | 99.2% |
| Somchem S355 | <<locked>> | 84% | 53,447 psi | 88% | 2700 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 53,287 psi | 87% | 2713 fps | 97.7% |
| Somchem S365 | <<locked>> | 92% | 54,853 psi | 90% | 2785 fps | 100% |
| Somchem S385 | <<locked>> | 94% | 52,895 psi | 87% | 2753 fps | 99.6% |
| Vihtavuori N150 | <<locked>> | 86% | 54,694 psi | 90% | 2674 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 53,432 psi | 88% | 2726 fps | 100% |
| Vihtavuori N165 | <<locked>> | 98% | 52,402 psi | 86% | 2733 fps | 99.4% |
| Vihtavuori N550 | <<locked>> | 88% | 52,518 psi | 86% | 2736 fps | 100% |
| Vihtavuori N555 | <<locked>> | 96% | 53,896 psi | 88% | 2802 fps | 100% |
| Vihtavuori N560 | <<locked>> | 96% | 54,186 psi | 89% | 2874 fps | 98.3% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 49,516 psi | 81% | 2785 fps | 97.7% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 52,953 psi | 87% | 2694 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 55,100 psi | 90% | 2808 fps | 99.9% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 51,140 psi | 84% | 2900 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 52,895 psi | 87% | 2749 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% | 29,051 psi | 48% | 2283 fps | 95.6% |
| Accurate 4064 | <<locked>> | 80% | 51,663 psi | 85% | 2635 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 39,769 psi | 65% | 2533 fps | 99.7% |
| Accurate High Country | 65.1 gr | 86% | 39,160 psi | 64% | 2612 fps | 95.4% |
| Accurate MAGPRO | 69.4 gr | 90% | 42,641 psi | 70% | 2674 fps | 95% |
| ADI AR 2208 | <<locked>> | 80% | 48,675 psi | 80% | 2621 fps | 100% |
| ADI AR 2209 | <<locked>> | 82% | 36,143 psi | 59% | 2470 fps | 95.2% |
| ADI AR 2213 | <<locked>> | 90% | 41,930 psi | 69% | 2625 fps | 95.7% |
| ADI AR 2217 | <<locked>> | 98% | 39,900 psi | 66% | 2575 fps | 95.2% |
| ADI AR 2225 | <<locked>> | 96% | 33,011 psi | 54% | 2474 fps | 96% |
| Alliant Power Pro Varmint | <<locked>> | 82% | 36,274 psi | 60% | 2474 fps | 95.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 49,458 psi | 81% | 2644 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 38,696 psi | 64% | 2546 fps | 99.8% |
| Alliant Reloder-17 | <<locked>> | 80% | 44,324 psi | 73% | 2664 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 82% | 35,940 psi | 59% | 2467 fps | 95.3% |
| Alliant Reloder-22 | <<locked>> | 86% | 36,172 psi | 59% | 2516 fps | 95.6% |
| Alliant Reloder-23 | <<locked>> | 80% | 28,311 psi | 46% | 2320 fps | 98.7% |
| Alliant Reloder-25 | <<locked>> | 84% | 28,195 psi | 46% | 2329 fps | 95.6% |
| Alliant Reloder-26 | 62.4 gr | 80% | 30,342 psi | 50% | 2434 fps | 97.6% |
| Bofors RP15 | <<locked>> | 88% | 35,708 psi | 59% | 2503 fps | 95.2% |
| Bofors RP3 | <<locked>> | 80% | 49,908 psi | 82% | 2657 fps | 100% |
| Bofors RP30 | <<locked>> | 96% | 37,753 psi | 62% | 2585 fps | 95.3% |
| Bofors RP5 | <<locked>> | 86% | 36,172 psi | 59% | 2516 fps | 95.6% |
| Bofors RP7 | <<locked>> | 80% | 43,671 psi | 72% | 2549 fps | 98.4% |
| Hodgdon H1000 | <<locked>> | 94% | 38,392 psi | 63% | 2546 fps | 95.4% |
| Hodgdon H380 | <<locked>> | 80% | 50,140 psi | 82% | 2674 fps | 100% |
| Hodgdon H414 | <<locked>> | 80% | 41,814 psi | 69% | 2585 fps | 98.6% |
| Hodgdon H4350 | <<locked>> | 80% | 44,860 psi | 74% | 2605 fps | 98.1% |
| Hodgdon H4831 | <<locked>> | 88% | 41,858 psi | 69% | 2575 fps | 95.1% |
| Hodgdon H4831 SC | <<locked>> | 90% | 44,034 psi | 72% | 2618 fps | 95.7% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 36,172 psi | 59% | 2438 fps | 99.9% |
| Hodgdon Retumbo | <<locked>> | 92% | 35,723 psi | 59% | 2579 fps | 95.9% |
| Hodgdon Superformance | <<locked>> | 80% | 40,756 psi | 67% | 2602 fps | 98.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,427 psi | 45% | 1516 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 51,227 psi | 84% | 2651 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 39,233 psi | 64% | 2480 fps | 97.4% |
| IMR 4451 Enduron | <<locked>> | 80% | 45,034 psi | 74% | 2575 fps | 98.9% |
| IMR 4831 | <<locked>> | 80% | 38,290 psi | 63% | 2490 fps | 99.6% |
| IMR 4955 Enduron | <<locked>> | 86% | 41,133 psi | 68% | 2520 fps | 95% |
| IMR 7828 SSC | <<locked>> | 90% | 40,118 psi | 66% | 2602 fps | 95.3% |
| Lovex S062 | <<locked>> | 80% | 51,576 psi | 85% | 2644 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 42,540 psi | 70% | 2526 fps | 99.4% |
| Lovex S070 | <<locked>> | 80% | 40,698 psi | 67% | 2510 fps | 98.4% |
| Lovex S071 | <<locked>> | 84% | 28,485 psi | 47% | 2267 fps | 95.3% |
| Norma 204 | <<locked>> | 80% | 38,754 psi | 64% | 2510 fps | 96% |
| Norma MRP | <<locked>> | 82% | 32,866 psi | 54% | 2464 fps | 95.8% |
| Norma URP | <<locked>> | 80% | 39,595 psi | 65% | 2530 fps | 99.6% |
| Ramshot Grand | <<locked>> | 90% | 39,711 psi | 65% | 2605 fps | 95.6% |
| Ramshot Hunter | <<locked>> | 80% | 38,377 psi | 63% | 2523 fps | 98.5% |
| Ramshot Magnum | <<locked>> | 90% | 35,056 psi | 58% | 2484 fps | 96% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,818 psi | 46% | 1552 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 50,140 psi | 82% | 2664 fps | 99.8% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 47,152 psi | 77% | 2707 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 39,726 psi | 65% | 2556 fps | 99.6% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 38,348 psi | 63% | 2569 fps | 99.4% |
| ReloadSwiss RS 76 | <<locked>> | 90% | 32,605 psi | 54% | 2497 fps | 95.7% |
| Rottweil R 903 | <<locked>> | 80% | 46,891 psi | 77% | 2605 fps | 100% |
| Rottweil R 904 | <<locked>> | 84% | 40,118 psi | 66% | 2507 fps | 95.4% |
| Rottweil R 905 | <<locked>> | 82% | 34,896 psi | 57% | 2444 fps | 95.2% |
| Rottweil R 907 | <<locked>> | 80% | 43,671 psi | 72% | 2549 fps | 98.4% |
| Shooters World Long Rifle | <<locked>> | 80% | 42,540 psi | 70% | 2526 fps | 99.4% |
| Shooters World Precision | <<locked>> | 80% | 51,576 psi | 85% | 2644 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 40,698 psi | 67% | 2510 fps | 98.4% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 48,254 psi | 79% | 2661 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 48,022 psi | 79% | 2500 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 41,626 psi | 68% | 2474 fps | 98.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 82% | 34,621 psi | 57% | 2441 fps | 95% |
| Somchem S355 | <<locked>> | 80% | 47,181 psi | 77% | 2605 fps | 100% |
| Somchem S361 | <<locked>> | 86% | 43,656 psi | 72% | 2552 fps | 95.6% |
| Somchem S365 | <<locked>> | 80% | 36,129 psi | 59% | 2487 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 33,243 psi | 55% | 2379 fps | 95.4% |
| Vihtavuori N150 | <<locked>> | 80% | 45,034 psi | 74% | 2533 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 40,973 psi | 67% | 2526 fps | 99.7% |
| Vihtavuori N165 | <<locked>> | 86% | 35,056 psi | 58% | 2418 fps | 95.7% |
| Vihtavuori N550 | <<locked>> | 80% | 40,393 psi | 66% | 2530 fps | 99.6% |
| Vihtavuori N555 | <<locked>> | 80% | 31,444 psi | 52% | 2388 fps | 98.6% |
| Vihtavuori N560 | <<locked>> | 88% | 40,944 psi | 67% | 2631 fps | 95.1% |
| Vihtavuori N565 | <<locked>> | 94% | 40,118 psi | 66% | 2608 fps | 95.2% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 39,958 psi | 66% | 2493 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 42,003 psi | 69% | 2589 fps | 98.6% |
| Winchester StaBALL HD | <<locked>> | 80% | 24,831 psi | 41% | 2306 fps | 98.3% |
| Winchester Supreme 780 | <<locked>> | 86% | 37,260 psi | 61% | 2470 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 82 powders for .300 Blaser Mag. loaded with the .308 | 200gr | Barnes TSX FB. Winchester StaBALL HD delivers the highest muzzle velocity at 2,900 fps; across all powders the maximum-charge window runs from 1,696 fps to 2,900 fps. ADI AR 2217 gives the best case fill at 100 %, and 82 of the 82 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (420 MPa), the top charges use 60–90 %, 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. Accurate MAGPRO, Accurate High Country, Alliant Reloder-26 rank at the top here: for .300 Blaser Mag. with the .308 | 200gr | Barnes TSX FB 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.