Load Specifications
Load data in caliber .300 Blaser Mag. with .308 | 200gr | Barnes X S bullet and 72 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Winchester StaBALL HD, Norma MRP and Vihtavuori N560.
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>> | 94% | 53,693 psi | 88% | 2733 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 51,837 psi | 85% | 2713 fps | 100% |
| Accurate High Country | <<locked>> | 92% | 54,128 psi | 89% | 2867 fps | 98.8% |
| Accurate MAGPRO | <<locked>> | 94% | 54,737 psi | 90% | 2867 fps | 97.9% |
| ADI AR 2209 | <<locked>> | 92% | 54,882 psi | 90% | 2805 fps | 99.4% |
| ADI AR 2213 | <<locked>> | 94% | 52,533 psi | 86% | 2805 fps | 98.3% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 47,413 psi | 78% | 2707 fps | 97.5% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 42,540 psi | 70% | 2684 fps | 99.2% |
| Alliant Power Pro Varmint | <<locked>> | 92% | 55,114 psi | 90% | 2802 fps | 99.4% |
| Alliant Reloder-16 | <<locked>> | 88% | 54,897 psi | 90% | 2802 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 82% | 52,678 psi | 86% | 2772 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 92% | 54,447 psi | 89% | 2795 fps | 99.4% |
| Alliant Reloder-22 | <<locked>> | 94% | 52,547 psi | 86% | 2808 fps | 99.3% |
| Alliant Reloder-23 | <<locked>> | 96% | 53,577 psi | 88% | 2785 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 52,721 psi | 87% | 2841 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 92% | 53,621 psi | 88% | 2874 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 96% | 54,723 psi | 90% | 2766 fps | 95.8% |
| Bofors RP15 | <<locked>> | 98% | 54,955 psi | 90% | 2844 fps | 99.4% |
| Bofors RP30ᴾ | <<locked>> | 100% | 48,979 psi | 80% | 2785 fps | 98.4% |
| Bofors RP5 | <<locked>> | 94% | 52,547 psi | 86% | 2808 fps | 99.3% |
| Bofors RP7 | <<locked>> | 84% | 54,186 psi | 89% | 2703 fps | 99.7% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 51,909 psi | 85% | 2789 fps | 98.9% |
| Hodgdon H414 | <<locked>> | 84% | 52,808 psi | 87% | 2756 fps | 99.8% |
| Hodgdon H4350 | <<locked>> | 82% | 52,127 psi | 86% | 2710 fps | 99.2% |
| Hodgdon H4831 | <<locked>> | 92% | 52,663 psi | 86% | 2746 fps | 97.7% |
| Hodgdon H4831 SC | <<locked>> | 94% | 54,998 psi | 90% | 2782 fps | 98.1% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 52,286 psi | 86% | 2687 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 51,750 psi | 85% | 2904 fps | 99.8% |
| Hodgdon Superformance | <<locked>> | 84% | 52,446 psi | 86% | 2785 fps | 99.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,289 psi | 61% | 1703 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 55,100 psi | 90% | 2740 fps | 99.8% |
| IMR 4451 Enduron | <<locked>> | 82% | 51,909 psi | 85% | 2674 fps | 99.7% |
| IMR 4831 | <<locked>> | 86% | 52,054 psi | 85% | 2703 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 54,172 psi | 89% | 2736 fps | 98.1% |
| IMR 7828 SSC | <<locked>> | 96% | 54,012 psi | 89% | 2841 fps | 98.6% |
| Lovex S065 | <<locked>> | 84% | 53,040 psi | 87% | 2680 fps | 100% |
| Lovex S070 | <<locked>> | 86% | 54,360 psi | 89% | 2723 fps | 99.9% |
| Lovex S071ᴾ | <<locked>> | 100% | 54,578 psi | 90% | 2743 fps | 100% |
| Norma 204 | <<locked>> | 86% | 52,286 psi | 86% | 2736 fps | 99% |
| Norma 217ᴾ | <<locked>> | 100% | 38,450 psi | 63% | 2621 fps | 97.7% |
| Norma MRP | <<locked>> | 92% | 52,272 psi | 86% | 2831 fps | 99.9% |
| Norma URP | <<locked>> | 86% | 53,316 psi | 88% | 2743 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 54,418 psi | 89% | 2858 fps | 99% |
| Ramshot Hunter | <<locked>> | 86% | 51,895 psi | 85% | 2743 fps | 100% |
| Ramshot Magnum | <<locked>> | 98% | 52,620 psi | 86% | 2799 fps | 99.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,203 psi | 63% | 1745 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 54,708 psi | 90% | 2782 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 52,489 psi | 86% | 2805 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 51,953 psi | 85% | 2897 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 47,311 psi | 78% | 2792 fps | 96.5% |
| Rottweil R 904 | <<locked>> | 90% | 53,156 psi | 87% | 2723 fps | 98.4% |
| Rottweil R 905 | <<locked>> | 92% | 54,114 psi | 89% | 2785 fps | 99.4% |
| Rottweil R 907 | <<locked>> | 84% | 54,186 psi | 89% | 2703 fps | 99.7% |
| Shooters World Long Rifle | <<locked>> | 84% | 53,040 psi | 87% | 2680 fps | 100% |
| Shooters World SW4350 | <<locked>> | 86% | 54,360 psi | 89% | 2723 fps | 99.9% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 52,025 psi | 85% | 2631 fps | 99.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 53,664 psi | 88% | 2779 fps | 99.3% |
| Somchem S361 | <<locked>> | 90% | 54,578 psi | 90% | 2717 fps | 98% |
| Somchem S365 | <<locked>> | 88% | 53,359 psi | 88% | 2746 fps | 100% |
| Somchem S385 | <<locked>> | 92% | 55,071 psi | 90% | 2766 fps | 99.8% |
| Vihtavuori N150 | <<locked>> | 82% | 52,910 psi | 87% | 2628 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 55,013 psi | 90% | 2730 fps | 100% |
| Vihtavuori N165 | <<locked>> | 96% | 54,114 psi | 89% | 2740 fps | 99.6% |
| Vihtavuori N550 | <<locked>> | 86% | 54,244 psi | 89% | 2740 fps | 100% |
| Vihtavuori N555 | <<locked>> | 92% | 53,156 psi | 87% | 2766 fps | 100% |
| Vihtavuori N560 | <<locked>> | 92% | 52,228 psi | 86% | 2822 fps | 98% |
| Vihtavuori N565 | <<locked>> | 98% | 52,243 psi | 86% | 2808 fps | 98.2% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 48,472 psi | 80% | 2792 fps | 96.2% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 53,882 psi | 88% | 2690 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 52,982 psi | 87% | 2759 fps | 99.9% |
| Winchester StaBALL HD | <<locked>> | 98% | 53,548 psi | 88% | 2913 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 54,476 psi | 89% | 2753 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% | 34,838 psi | 57% | 2392 fps | 97.8% |
| Accurate 4350 | <<locked>> | 80% | 45,716 psi | 75% | 2615 fps | 100% |
| Accurate High Country | <<locked>> | 82% | 39,001 psi | 64% | 2582 fps | 95.3% |
| Accurate MAGPRO | <<locked>> | 88% | 45,020 psi | 74% | 2697 fps | 95.7% |
| ADI AR 2209 | <<locked>> | 80% | 37,927 psi | 62% | 2490 fps | 96% |
| ADI AR 2213 | <<locked>> | 86% | 40,901 psi | 67% | 2582 fps | 95.4% |
| ADI AR 2217 | <<locked>> | 94% | 39,494 psi | 65% | 2546 fps | 95.1% |
| ADI AR 2225 | <<locked>> | 90% | 31,676 psi | 52% | 2411 fps | 95.3% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 38,232 psi | 63% | 2493 fps | 96.1% |
| Alliant Reloder-16 | <<locked>> | 80% | 43,120 psi | 71% | 2612 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 80% | 49,095 psi | 81% | 2720 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 37,913 psi | 62% | 2487 fps | 96.1% |
| Alliant Reloder-22 | <<locked>> | 82% | 36,216 psi | 59% | 2490 fps | 95.6% |
| Alliant Reloder-23 | <<locked>> | 80% | 32,924 psi | 54% | 2411 fps | 99.7% |
| Alliant Reloder-25 | <<locked>> | 80% | 29,138 psi | 48% | 2329 fps | 96.2% |
| Alliant Reloder-26 | <<locked>> | 80% | 35,592 psi | 58% | 2543 fps | 99.2% |
| Baschieri & Pellagri 109 | <<locked>> | 94% | 51,488 psi | 85% | 2710 fps | 95% |
| Bofors RP15 | <<locked>> | 84% | 35,969 psi | 59% | 2484 fps | 95.4% |
| Bofors RP30 | <<locked>> | 92% | 38,130 psi | 63% | 2572 fps | 95.5% |
| Bofors RP5 | <<locked>> | 82% | 36,216 psi | 59% | 2490 fps | 95.6% |
| Bofors RP7 | <<locked>> | 80% | 48,051 psi | 79% | 2605 fps | 99.1% |
| Hodgdon H1000 | <<locked>> | 90% | 37,884 psi | 62% | 2513 fps | 95.2% |
| Hodgdon H414 | <<locked>> | 80% | 46,586 psi | 76% | 2651 fps | 99.3% |
| Hodgdon H4350 | <<locked>> | 80% | 48,965 psi | 80% | 2657 fps | 98.8% |
| Hodgdon H4831 | <<locked>> | 86% | 43,671 psi | 72% | 2589 fps | 95.7% |
| Hodgdon H4831 SC | <<locked>> | 86% | 42,743 psi | 70% | 2569 fps | 95.4% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 41,017 psi | 67% | 2503 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 86% | 33,866 psi | 56% | 2503 fps | 95% |
| Hodgdon Superformance | <<locked>> | 80% | 45,542 psi | 75% | 2671 fps | 99% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,079 psi | 46% | 1522 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 43,439 psi | 71% | 2543 fps | 98.4% |
| IMR 4451 Enduron | <<locked>> | 80% | 49,081 psi | 81% | 2625 fps | 99.5% |
| IMR 4831 | <<locked>> | 80% | 43,308 psi | 71% | 2559 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 84% | 42,757 psi | 70% | 2533 fps | 95.6% |
| IMR 7828 SSC | <<locked>> | 86% | 39,421 psi | 65% | 2562 fps | 95% |
| Lovex S065 | <<locked>> | 80% | 47,152 psi | 77% | 2585 fps | 99.8% |
| Lovex S070 | <<locked>> | 80% | 45,440 psi | 75% | 2575 fps | 99.2% |
| Lovex S071 | <<locked>> | 80% | 30,458 psi | 50% | 2283 fps | 96.2% |
| Norma 204 | <<locked>> | 80% | 43,207 psi | 71% | 2579 fps | 97.3% |
| Norma 217 | <<locked>> | 94% | 32,300 psi | 53% | 2464 fps | 95.2% |
| Norma MRP | 60.9 gr | 80% | 35,375 psi | 58% | 2503 fps | 96.9% |
| Norma URP | <<locked>> | 80% | 44,266 psi | 73% | 2592 fps | 100% |
| Ramshot Grand | <<locked>> | 86% | 39,015 psi | 64% | 2569 fps | 95.3% |
| Ramshot Hunter | <<locked>> | 80% | 43,076 psi | 71% | 2592 fps | 99.3% |
| Ramshot Magnum | <<locked>> | 84% | 33,025 psi | 54% | 2408 fps | 95.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,790 psi | 47% | 1562 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 45,092 psi | 74% | 2631 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 42,960 psi | 71% | 2641 fps | 99.9% |
| ReloadSwiss RS 76 | <<locked>> | 86% | 32,982 psi | 54% | 2480 fps | 95.9% |
| ReloadSwiss RS 80 | <<locked>> | 98% | 44,193 psi | 73% | 2730 fps | 95.6% |
| Rottweil R 904 | <<locked>> | 80% | 39,320 psi | 65% | 2467 fps | 95.2% |
| Rottweil R 905 | <<locked>> | 80% | 37,260 psi | 61% | 2474 fps | 96.1% |
| Rottweil R 907 | <<locked>> | 80% | 48,051 psi | 79% | 2605 fps | 99.1% |
| Shooters World Long Rifle | <<locked>> | 80% | 47,152 psi | 77% | 2585 fps | 99.8% |
| Shooters World SW4350 | <<locked>> | 80% | 45,440 psi | 75% | 2575 fps | 99.2% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 46,166 psi | 76% | 2533 fps | 99.2% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 36,927 psi | 61% | 2467 fps | 95.9% |
| Somchem S361 | <<locked>> | 82% | 42,438 psi | 70% | 2507 fps | 95.2% |
| Somchem S365 | <<locked>> | 80% | 41,394 psi | 68% | 2559 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 38,130 psi | 63% | 2464 fps | 97.2% |
| Vihtavuori N150 | <<locked>> | 80% | 49,632 psi | 81% | 2582 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 45,716 psi | 75% | 2585 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 33,112 psi | 54% | 2346 fps | 95% |
| Vihtavuori N550 | <<locked>> | 80% | 45,150 psi | 74% | 2592 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 36,956 psi | 61% | 2484 fps | 99.7% |
| Vihtavuori N560 | 64 gr | 84% | 40,437 psi | 66% | 2598 fps | 95% |
| Vihtavuori N565 | <<locked>> | 90% | 40,582 psi | 67% | 2595 fps | 95.4% |
| Vihtavuori N568 | <<locked>> | 98% | 45,469 psi | 75% | 2736 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 44,367 psi | 73% | 2549 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 46,760 psi | 77% | 2654 fps | 99.3% |
| Winchester StaBALL HD | 60.3 gr | 80% | 29,588 psi | 49% | 2438 fps | 99.9% |
| Winchester Supreme 780 | <<locked>> | 82% | 36,970 psi | 61% | 2438 fps | 95.7% |
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 72 powders for .300 Blaser Mag. loaded with the .308 | 200gr | Barnes X S. Winchester StaBALL HD delivers the highest muzzle velocity at 2,913 fps; across all powders the maximum-charge window runs from 1,703 fps to 2,913 fps. ADI AR 2217 gives the best case fill at 100 %, and 72 of the 72 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (420 MPa), the top charges use 61–90 %, 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. Winchester StaBALL HD, Norma MRP, Vihtavuori N560 rank at the top here: for .300 Blaser Mag. with the .308 | 200gr | Barnes X S 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.