Load Specifications
Load data in caliber .300 Blaser Mag. with .308 | 201gr | RWS UNI Classic bullet and 74 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Winchester StaBALL HD, Vihtavuori N560 and Norma MRP.
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% | 52,576 psi | 86% | 2743 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 54,041 psi | 89% | 2772 fps | 100% |
| Accurate High Country | <<locked>> | 92% | 53,795 psi | 88% | 2887 fps | 99% |
| Accurate MAGPRO | <<locked>> | 94% | 54,549 psi | 90% | 2890 fps | 98.2% |
| ADI AR 2209 | <<locked>> | 92% | 54,911 psi | 90% | 2831 fps | 99.6% |
| ADI AR 2213 | <<locked>> | 94% | 52,547 psi | 86% | 2835 fps | 98.7% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 47,050 psi | 77% | 2733 fps | 98% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 41,684 psi | 68% | 2694 fps | 99.4% |
| Alliant Reloder-16 | <<locked>> | 88% | 54,955 psi | 90% | 2828 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 82% | 52,199 psi | 86% | 2789 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 92% | 54,273 psi | 89% | 2818 fps | 99.6% |
| Alliant Reloder-22 | <<locked>> | 94% | 52,446 psi | 86% | 2831 fps | 99.5% |
| Alliant Reloder-23 | <<locked>> | 96% | 53,403 psi | 88% | 2802 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 52,663 psi | 86% | 2861 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 92% | 53,345 psi | 88% | 2887 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 96% | 54,549 psi | 90% | 2795 fps | 96.4% |
| Bofors RP15 | <<locked>> | 98% | 54,868 psi | 90% | 2867 fps | 99.6% |
| Bofors RP30ᴾ | <<locked>> | 100% | 48,602 psi | 80% | 2802 fps | 98.6% |
| Bofors RP5 | <<locked>> | 94% | 52,446 psi | 86% | 2831 fps | 99.5% |
| Bofors RP7 | <<locked>> | 84% | 53,388 psi | 88% | 2723 fps | 99.8% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 51,619 psi | 85% | 2815 fps | 99.2% |
| Hodgdon H414 | <<locked>> | 84% | 52,344 psi | 86% | 2776 fps | 99.9% |
| Hodgdon H4350 | <<locked>> | 84% | 55,056 psi | 90% | 2785 fps | 99.7% |
| Hodgdon H4831 | <<locked>> | 92% | 52,591 psi | 86% | 2776 fps | 98.1% |
| Hodgdon H4831 SC | <<locked>> | 92% | 51,503 psi | 85% | 2756 fps | 97.9% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 51,953 psi | 85% | 2703 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 51,517 psi | 85% | 2927 fps | 99.9% |
| Hodgdon Superformance | <<locked>> | 84% | 52,228 psi | 86% | 2808 fps | 99.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,057 psi | 61% | 1722 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 54,766 psi | 90% | 2759 fps | 99.9% |
| IMR 4451 Enduron | <<locked>> | 84% | 54,766 psi | 90% | 2746 fps | 100% |
| IMR 4831 | <<locked>> | 88% | 54,418 psi | 89% | 2766 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 53,983 psi | 89% | 2759 fps | 98.4% |
| IMR 7828 SSC | <<locked>> | 96% | 53,795 psi | 88% | 2867 fps | 99% |
| Lovex S065 | <<locked>> | 84% | 52,069 psi | 85% | 2694 fps | 100% |
| Lovex S070 | <<locked>> | 86% | 53,461 psi | 88% | 2740 fps | 100% |
| Lovex S071ᴾ | <<locked>> | 100% | 53,548 psi | 88% | 2756 fps | 100% |
| Norma 204 | <<locked>> | 86% | 51,996 psi | 85% | 2762 fps | 99.2% |
| Norma 217ᴾ | <<locked>> | 100% | 37,217 psi | 61% | 2621 fps | 97.8% |
| Norma MRP | <<locked>> | 92% | 51,953 psi | 85% | 2851 fps | 99.9% |
| Norma URP | <<locked>> | 86% | 52,692 psi | 87% | 2756 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 54,476 psi | 89% | 2887 fps | 99.3% |
| Ramshot Hunter | <<locked>> | 88% | 55,042 psi | 90% | 2818 fps | 100% |
| Ramshot Magnum | <<locked>> | 98% | 52,431 psi | 86% | 2818 fps | 99.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,855 psi | 62% | 1765 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 54,012 psi | 89% | 2799 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 52,112 psi | 86% | 2822 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 51,866 psi | 85% | 2923 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 46,833 psi | 77% | 2808 fps | 96.9% |
| Rottweil R 903 | <<locked>> | 82% | 54,621 psi | 90% | 2723 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 52,692 psi | 87% | 2746 fps | 98.6% |
| Rottweil R 905 | <<locked>> | 92% | 53,780 psi | 88% | 2808 fps | 99.6% |
| Rottweil R 907 | <<locked>> | 84% | 53,388 psi | 88% | 2723 fps | 99.8% |
| Shooters World Long Rifle | <<locked>> | 84% | 52,069 psi | 85% | 2694 fps | 100% |
| Shooters World SW4350 | <<locked>> | 86% | 53,461 psi | 88% | 2740 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 54,534 psi | 90% | 2595 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 54,636 psi | 90% | 2700 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 53,345 psi | 88% | 2802 fps | 99.5% |
| Somchem S355 | <<locked>> | 82% | 54,317 psi | 89% | 2717 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 54,070 psi | 89% | 2740 fps | 98.3% |
| Somchem S365 | <<locked>> | 88% | 52,779 psi | 87% | 2759 fps | 100% |
| Somchem S385 | <<locked>> | 92% | 54,346 psi | 89% | 2782 fps | 99.9% |
| Vihtavuori N150 | <<locked>> | 82% | 52,098 psi | 86% | 2641 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 54,418 psi | 89% | 2746 fps | 100% |
| Vihtavuori N165 | <<locked>> | 96% | 53,737 psi | 88% | 2759 fps | 99.7% |
| Vihtavuori N550 | <<locked>> | 86% | 53,693 psi | 88% | 2756 fps | 100% |
| Vihtavuori N555 | <<locked>> | 92% | 52,417 psi | 86% | 2782 fps | 100% |
| Vihtavuori N560 | <<locked>> | 92% | 51,967 psi | 85% | 2844 fps | 98.3% |
| Vihtavuori N565 | <<locked>> | 98% | 51,605 psi | 85% | 2825 fps | 98.4% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 48,109 psi | 79% | 2815 fps | 96.6% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 53,911 psi | 89% | 2713 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 52,576 psi | 86% | 2779 fps | 99.9% |
| Winchester StaBALL HD | <<locked>> | 98% | 54,143 psi | 89% | 2933 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 54,099 psi | 89% | 2776 fps | 99.5% |
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% | 32,808 psi | 54% | 2375 fps | 97.5% |
| Accurate 4350 | <<locked>> | 80% | 44,135 psi | 72% | 2615 fps | 100% |
| Accurate High Country | <<locked>> | 82% | 38,000 psi | 62% | 2589 fps | 95.4% |
| Accurate MAGPRO | <<locked>> | 86% | 41,263 psi | 68% | 2648 fps | 95% |
| ADI AR 2209 | <<locked>> | 80% | 36,956 psi | 61% | 2497 fps | 96.1% |
| ADI AR 2213 | <<locked>> | 86% | 40,277 psi | 66% | 2602 fps | 95.8% |
| ADI AR 2217 | <<locked>> | 94% | 38,566 psi | 63% | 2559 fps | 95.4% |
| ADI AR 2225 | <<locked>> | 90% | 30,400 psi | 50% | 2408 fps | 95.2% |
| Alliant Reloder-16 | <<locked>> | 80% | 42,308 psi | 69% | 2621 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 80% | 48,689 psi | 80% | 2736 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 36,869 psi | 61% | 2493 fps | 96.1% |
| Alliant Reloder-22 | <<locked>> | 82% | 34,983 psi | 57% | 2490 fps | 95.6% |
| Alliant Reloder-23 | <<locked>> | 80% | 31,560 psi | 52% | 2405 fps | 99.7% |
| Alliant Reloder-25 | <<locked>> | 80% | 27,601 psi | 45% | 2313 fps | 95.8% |
| Alliant Reloder-26 | <<locked>> | 80% | 34,127 psi | 56% | 2533 fps | 99.1% |
| Baschieri & Pellagri 109 | <<locked>> | 94% | 51,358 psi | 84% | 2740 fps | 95.6% |
| Bofors RP15 | <<locked>> | 84% | 34,838 psi | 57% | 2487 fps | 95.4% |
| Bofors RP30 | <<locked>> | 92% | 37,057 psi | 61% | 2572 fps | 95.6% |
| Bofors RP5 | <<locked>> | 82% | 34,983 psi | 57% | 2490 fps | 95.6% |
| Bofors RP7 | <<locked>> | 80% | 47,152 psi | 77% | 2621 fps | 99.2% |
| Hodgdon H1000 | <<locked>> | 90% | 36,956 psi | 61% | 2523 fps | 95.5% |
| Hodgdon H414 | <<locked>> | 80% | 45,788 psi | 75% | 2664 fps | 99.4% |
| Hodgdon H4350 | <<locked>> | 80% | 48,486 psi | 80% | 2677 fps | 99% |
| Hodgdon H4831 | <<locked>> | 84% | 40,103 psi | 66% | 2546 fps | 95% |
| Hodgdon H4831 SC | <<locked>> | 86% | 42,235 psi | 69% | 2589 fps | 95.7% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 39,943 psi | 66% | 2510 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 88% | 34,766 psi | 57% | 2562 fps | 96.1% |
| Hodgdon Superformance | <<locked>> | 80% | 45,092 psi | 74% | 2687 fps | 99.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,717 psi | 46% | 1539 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 42,627 psi | 70% | 2556 fps | 98.6% |
| IMR 4451 Enduron | <<locked>> | 80% | 48,501 psi | 80% | 2644 fps | 99.6% |
| IMR 4831 | <<locked>> | 80% | 42,061 psi | 69% | 2566 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 82% | 39,378 psi | 65% | 2493 fps | 95% |
| IMR 7828 SSC | <<locked>> | 86% | 38,566 psi | 63% | 2575 fps | 95.3% |
| Lovex S065 | <<locked>> | 80% | 46,064 psi | 76% | 2595 fps | 99.9% |
| Lovex S070 | <<locked>> | 80% | 44,440 psi | 73% | 2589 fps | 99.3% |
| Lovex S071 | <<locked>> | 80% | 28,369 psi | 47% | 2260 fps | 95.7% |
| Norma 204 | <<locked>> | 80% | 42,409 psi | 70% | 2592 fps | 97.5% |
| Norma 217 | <<locked>> | 96% | 32,764 psi | 54% | 2510 fps | 96% |
| Norma MRP | 64.1 gr | 80% | 34,142 psi | 56% | 2500 fps | 96.8% |
| Norma URP | <<locked>> | 80% | 43,497 psi | 71% | 2608 fps | 100% |
| Ramshot Grand | <<locked>> | 86% | 38,101 psi | 63% | 2579 fps | 95.6% |
| Ramshot Hunter | <<locked>> | 80% | 42,148 psi | 69% | 2602 fps | 99.4% |
| Ramshot Magnum | <<locked>> | 84% | 31,691 psi | 52% | 2408 fps | 95% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,326 psi | 47% | 1575 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 44,077 psi | 72% | 2638 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 42,177 psi | 69% | 2651 fps | 99.9% |
| ReloadSwiss RS 76 | <<locked>> | 86% | 31,734 psi | 52% | 2477 fps | 95.9% |
| ReloadSwiss RS 80 | <<locked>> | 98% | 43,410 psi | 71% | 2743 fps | 95.9% |
| Rottweil R 903 | <<locked>> | 80% | 51,271 psi | 84% | 2674 fps | 100% |
| Rottweil R 904 | <<locked>> | 80% | 38,392 psi | 63% | 2480 fps | 95.3% |
| Rottweil R 905 | <<locked>> | 80% | 36,260 psi | 60% | 2480 fps | 96.1% |
| Rottweil R 907 | <<locked>> | 80% | 47,152 psi | 77% | 2621 fps | 99.2% |
| Shooters World Long Rifle | <<locked>> | 80% | 46,064 psi | 76% | 2595 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 80% | 44,440 psi | 73% | 2589 fps | 99.3% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 51,430 psi | 84% | 2552 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 45,121 psi | 74% | 2546 fps | 99.3% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 35,926 psi | 59% | 2474 fps | 96% |
| Somchem S355 | <<locked>> | 80% | 51,053 psi | 84% | 2671 fps | 100% |
| Somchem S361 | <<locked>> | 82% | 41,640 psi | 68% | 2523 fps | 95.5% |
| Somchem S365 | <<locked>> | 80% | 40,306 psi | 66% | 2566 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 36,782 psi | 60% | 2464 fps | 97.1% |
| Vihtavuori N150 | <<locked>> | 80% | 48,907 psi | 80% | 2595 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 44,788 psi | 74% | 2598 fps | 100% |
| Vihtavuori N165 | <<locked>> | 82% | 34,026 psi | 56% | 2395 fps | 95.8% |
| Vihtavuori N550 | <<locked>> | 80% | 44,266 psi | 73% | 2605 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 35,360 psi | 58% | 2477 fps | 99.6% |
| Vihtavuori N560 | 67.3 gr | 84% | 39,508 psi | 65% | 2608 fps | 95.1% |
| Vihtavuori N565 | <<locked>> | 90% | 39,407 psi | 65% | 2595 fps | 95.5% |
| Vihtavuori N568 | <<locked>> | 98% | 44,875 psi | 74% | 2753 fps | 95.7% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 43,772 psi | 72% | 2562 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 45,948 psi | 75% | 2667 fps | 99.4% |
| Winchester StaBALL HD | 63.4 gr | 80% | 27,905 psi | 46% | 2418 fps | 99.8% |
| Winchester Supreme 780 | <<locked>> | 82% | 35,868 psi | 59% | 2444 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 79 powders for .300 Blaser Mag. loaded with the .308 | 201gr | RWS UNI Classic. Winchester StaBALL HD delivers the highest muzzle velocity at 2,933 fps; across all powders the maximum-charge window runs from 1,722 fps to 2,933 fps. ADI AR 2217 gives the best case fill at 100 %, and 79 of the 79 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 201.0 gr projectile in 0.308" calls for a 1:12.5 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, Vihtavuori N560, Norma MRP rank at the top here: for .300 Blaser Mag. with the .308 | 201gr | RWS UNI Classic they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Alliant Reloder-33, IMR 7977 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.