Load Specifications
Load data in caliber .300 Blaser Mag. with .308 | 201gr | RWS Kegelspitz bullet and 75 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% | 52,489 psi | 86% | 2740 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 54,157 psi | 89% | 2772 fps | 100% |
| Accurate High Country | <<locked>> | 92% | 53,650 psi | 88% | 2884 fps | 99% |
| Accurate MAGPRO | <<locked>> | 94% | 54,462 psi | 89% | 2884 fps | 98.2% |
| ADI AR 2209 | <<locked>> | 92% | 54,781 psi | 90% | 2825 fps | 99.6% |
| ADI AR 2213 | <<locked>> | 94% | 52,489 psi | 86% | 2831 fps | 98.7% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 46,963 psi | 77% | 2730 fps | 97.9% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 41,640 psi | 68% | 2690 fps | 99.3% |
| Alliant Power Pro Varmint | <<locked>> | 92% | 55,056 psi | 90% | 2825 fps | 99.6% |
| Alliant Reloder-16 | <<locked>> | 88% | 54,795 psi | 90% | 2822 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 82% | 52,286 psi | 86% | 2785 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 92% | 54,375 psi | 89% | 2818 fps | 99.5% |
| Alliant Reloder-22 | <<locked>> | 94% | 52,315 psi | 86% | 2825 fps | 99.5% |
| Alliant Reloder-23 | <<locked>> | 96% | 53,258 psi | 87% | 2799 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 52,533 psi | 86% | 2858 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 92% | 53,476 psi | 88% | 2887 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 96% | 54,491 psi | 89% | 2789 fps | 96.3% |
| Bofors RP15 | <<locked>> | 98% | 54,969 psi | 90% | 2867 fps | 99.6% |
| Bofors RP30ᴾ | <<locked>> | 100% | 48,486 psi | 80% | 2799 fps | 98.6% |
| Bofors RP5 | <<locked>> | 94% | 52,315 psi | 86% | 2825 fps | 99.5% |
| Bofors RP7 | <<locked>> | 84% | 53,272 psi | 87% | 2720 fps | 99.8% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 51,750 psi | 85% | 2815 fps | 99.2% |
| Hodgdon H414 | <<locked>> | 84% | 52,243 psi | 86% | 2772 fps | 99.9% |
| Hodgdon H4350 | <<locked>> | 84% | 54,969 psi | 90% | 2782 fps | 99.7% |
| Hodgdon H4831 | <<locked>> | 92% | 52,489 psi | 86% | 2769 fps | 98.1% |
| Hodgdon H4831 SC | <<locked>> | 94% | 55,042 psi | 90% | 2808 fps | 98.5% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 51,793 psi | 85% | 2700 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 51,401 psi | 84% | 2923 fps | 99.9% |
| Hodgdon Superformance | <<locked>> | 84% | 52,098 psi | 86% | 2805 fps | 99.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,927 psi | 61% | 1719 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 54,636 psi | 90% | 2756 fps | 99.9% |
| IMR 4451 Enduron | <<locked>> | 84% | 54,853 psi | 90% | 2743 fps | 99.9% |
| IMR 4831 | <<locked>> | 88% | 54,520 psi | 90% | 2762 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 53,867 psi | 88% | 2756 fps | 98.4% |
| IMR 7828 SSC | <<locked>> | 96% | 53,911 psi | 89% | 2864 fps | 98.9% |
| Lovex S065 | <<locked>> | 84% | 51,982 psi | 85% | 2690 fps | 100% |
| Lovex S070 | <<locked>> | 86% | 53,316 psi | 88% | 2736 fps | 100% |
| Lovex S071ᴾ | <<locked>> | 100% | 53,403 psi | 88% | 2753 fps | 100% |
| Norma 204 | <<locked>> | 86% | 51,880 psi | 85% | 2756 fps | 99.2% |
| Norma 217ᴾ | <<locked>> | 100% | 37,159 psi | 61% | 2618 fps | 97.7% |
| Norma MRP | <<locked>> | 92% | 51,851 psi | 85% | 2844 fps | 99.9% |
| Norma URP | <<locked>> | 86% | 52,547 psi | 86% | 2753 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 54,404 psi | 89% | 2884 fps | 99.3% |
| Ramshot Hunter | <<locked>> | 88% | 54,911 psi | 90% | 2812 fps | 100% |
| Ramshot Magnum | <<locked>> | 98% | 52,373 psi | 86% | 2818 fps | 99.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,724 psi | 62% | 1759 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 53,925 psi | 89% | 2792 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 52,199 psi | 86% | 2822 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 51,750 psi | 85% | 2917 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 46,731 psi | 77% | 2802 fps | 96.8% |
| Rottweil R 903 | <<locked>> | 82% | 54,491 psi | 89% | 2720 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 52,779 psi | 87% | 2746 fps | 98.6% |
| Rottweil R 905 | <<locked>> | 92% | 53,693 psi | 88% | 2802 fps | 99.5% |
| Rottweil R 907 | <<locked>> | 84% | 53,272 psi | 87% | 2720 fps | 99.8% |
| Shooters World Long Rifle | <<locked>> | 84% | 51,982 psi | 85% | 2690 fps | 100% |
| Shooters World SW4350 | <<locked>> | 86% | 53,316 psi | 88% | 2736 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 54,679 psi | 90% | 2595 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 54,563 psi | 90% | 2697 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 53,258 psi | 87% | 2799 fps | 99.5% |
| Somchem S355 | <<locked>> | 82% | 54,186 psi | 89% | 2713 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 53,969 psi | 89% | 2736 fps | 98.2% |
| Somchem S365 | <<locked>> | 88% | 52,678 psi | 86% | 2756 fps | 100% |
| Somchem S385 | <<locked>> | 92% | 54,201 psi | 89% | 2776 fps | 99.8% |
| Vihtavuori N150 | <<locked>> | 82% | 51,967 psi | 85% | 2638 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 54,520 psi | 90% | 2749 fps | 100% |
| Vihtavuori N165 | <<locked>> | 96% | 53,606 psi | 88% | 2756 fps | 99.7% |
| Vihtavuori N550 | <<locked>> | 86% | 53,606 psi | 88% | 2753 fps | 100% |
| Vihtavuori N555 | <<locked>> | 92% | 52,330 psi | 86% | 2779 fps | 100% |
| Vihtavuori N560 | <<locked>> | 92% | 51,837 psi | 85% | 2838 fps | 98.2% |
| Vihtavuori N565 | <<locked>> | 98% | 51,488 psi | 85% | 2822 fps | 98.4% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 48,167 psi | 79% | 2812 fps | 96.6% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 53,780 psi | 88% | 2707 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 52,475 psi | 86% | 2772 fps | 99.9% |
| Winchester StaBALL HD | <<locked>> | 98% | 54,012 psi | 89% | 2930 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 53,998 psi | 89% | 2772 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% | 32,880 psi | 54% | 2375 fps | 97.5% |
| Accurate 4350 | <<locked>> | 80% | 44,222 psi | 73% | 2615 fps | 100% |
| Accurate High Country | <<locked>> | 82% | 37,884 psi | 62% | 2582 fps | 95.3% |
| Accurate MAGPRO | <<locked>> | 88% | 44,309 psi | 73% | 2707 fps | 95.9% |
| ADI AR 2209 | <<locked>> | 80% | 36,854 psi | 61% | 2490 fps | 96% |
| ADI AR 2213 | <<locked>> | 86% | 40,190 psi | 66% | 2595 fps | 95.7% |
| ADI AR 2217 | <<locked>> | 94% | 38,479 psi | 63% | 2552 fps | 95.3% |
| ADI AR 2225 | <<locked>> | 90% | 30,327 psi | 50% | 2402 fps | 95.1% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 37,275 psi | 61% | 2497 fps | 96.2% |
| Alliant Reloder-16 | <<locked>> | 80% | 42,380 psi | 70% | 2621 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 80% | 48,762 psi | 80% | 2733 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 36,927 psi | 61% | 2490 fps | 96.1% |
| Alliant Reloder-22 | <<locked>> | 82% | 35,027 psi | 57% | 2490 fps | 95.6% |
| Alliant Reloder-23 | <<locked>> | 80% | 31,459 psi | 52% | 2402 fps | 99.7% |
| Alliant Reloder-25 | <<locked>> | 80% | 27,514 psi | 45% | 2310 fps | 95.7% |
| Alliant Reloder-26 | <<locked>> | 80% | 34,200 psi | 56% | 2533 fps | 99.1% |
| Baschieri & Pellagri 109 | <<locked>> | 94% | 51,285 psi | 84% | 2736 fps | 95.5% |
| Bofors RP15 | <<locked>> | 84% | 34,737 psi | 57% | 2480 fps | 95.3% |
| Bofors RP30 | <<locked>> | 92% | 37,130 psi | 61% | 2572 fps | 95.6% |
| Bofors RP5 | <<locked>> | 82% | 35,027 psi | 57% | 2490 fps | 95.6% |
| Bofors RP7 | <<locked>> | 80% | 47,050 psi | 77% | 2615 fps | 99.2% |
| Hodgdon H1000 | <<locked>> | 90% | 36,883 psi | 61% | 2520 fps | 95.4% |
| Hodgdon H414 | <<locked>> | 80% | 45,861 psi | 75% | 2664 fps | 99.4% |
| Hodgdon H4350 | <<locked>> | 80% | 48,370 psi | 79% | 2674 fps | 99% |
| Hodgdon H4831 | <<locked>> | 84% | 40,176 psi | 66% | 2546 fps | 95% |
| Hodgdon H4831 SC | <<locked>> | 86% | 42,105 psi | 69% | 2585 fps | 95.6% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 40,001 psi | 66% | 2510 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 88% | 34,809 psi | 57% | 2559 fps | 96% |
| Hodgdon Superformance | <<locked>> | 80% | 44,976 psi | 74% | 2684 fps | 99.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,760 psi | 46% | 1535 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 42,525 psi | 70% | 2552 fps | 98.5% |
| IMR 4451 Enduron | <<locked>> | 80% | 48,385 psi | 79% | 2641 fps | 99.6% |
| IMR 4831 | <<locked>> | 80% | 42,134 psi | 69% | 2562 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 82% | 39,450 psi | 65% | 2493 fps | 95% |
| IMR 7828 SSC | <<locked>> | 86% | 38,638 psi | 63% | 2572 fps | 95.3% |
| Lovex S065 | <<locked>> | 80% | 45,963 psi | 75% | 2592 fps | 99.9% |
| Lovex S070 | <<locked>> | 80% | 44,338 psi | 73% | 2585 fps | 99.3% |
| Lovex S071 | <<locked>> | 80% | 28,268 psi | 46% | 2257 fps | 95.6% |
| Norma 204 | <<locked>> | 80% | 42,482 psi | 70% | 2589 fps | 97.5% |
| Norma 217 | <<locked>> | 96% | 32,663 psi | 54% | 2503 fps | 95.9% |
| Norma MRP | 64 gr | 80% | 34,069 psi | 56% | 2493 fps | 96.7% |
| Norma URP | <<locked>> | 80% | 43,395 psi | 71% | 2602 fps | 100% |
| Ramshot Grand | <<locked>> | 86% | 38,189 psi | 63% | 2579 fps | 95.6% |
| Ramshot Hunter | <<locked>> | 80% | 42,221 psi | 69% | 2598 fps | 99.4% |
| Ramshot Magnum | <<locked>> | 86% | 33,895 psi | 56% | 2461 fps | 96% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,369 psi | 47% | 1575 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 43,961 psi | 72% | 2635 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 42,250 psi | 69% | 2651 fps | 99.9% |
| ReloadSwiss RS 76 | <<locked>> | 86% | 31,662 psi | 52% | 2474 fps | 95.7% |
| ReloadSwiss RS 80 | <<locked>> | 98% | 43,308 psi | 71% | 2736 fps | 95.9% |
| Rottweil R 903 | <<locked>> | 80% | 51,140 psi | 84% | 2671 fps | 100% |
| Rottweil R 904 | <<locked>> | 80% | 38,319 psi | 63% | 2474 fps | 95.3% |
| Rottweil R 905 | <<locked>> | 80% | 36,143 psi | 59% | 2474 fps | 96% |
| Rottweil R 907 | <<locked>> | 80% | 47,050 psi | 77% | 2615 fps | 99.2% |
| Shooters World Long Rifle | <<locked>> | 80% | 45,963 psi | 75% | 2592 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 80% | 44,338 psi | 73% | 2585 fps | 99.3% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 51,329 psi | 84% | 2549 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 45,020 psi | 74% | 2543 fps | 99.3% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 35,824 psi | 59% | 2470 fps | 95.9% |
| Somchem S355 | <<locked>> | 80% | 50,952 psi | 84% | 2664 fps | 100% |
| Somchem S361 | <<locked>> | 82% | 41,539 psi | 68% | 2520 fps | 95.4% |
| Somchem S365 | <<locked>> | 80% | 40,176 psi | 66% | 2559 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 36,695 psi | 60% | 2461 fps | 97.1% |
| Vihtavuori N150 | <<locked>> | 80% | 48,791 psi | 80% | 2592 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 44,860 psi | 74% | 2598 fps | 100% |
| Vihtavuori N165 | <<locked>> | 82% | 33,924 psi | 56% | 2392 fps | 95.7% |
| Vihtavuori N550 | <<locked>> | 80% | 44,179 psi | 73% | 2602 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 35,389 psi | 58% | 2474 fps | 99.6% |
| Vihtavuori N560 | 67.2 gr | 84% | 39,436 psi | 65% | 2602 fps | 95.1% |
| Vihtavuori N565 | <<locked>> | 90% | 39,291 psi | 65% | 2592 fps | 95.4% |
| Vihtavuori N568 | <<locked>> | 98% | 44,759 psi | 73% | 2749 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 43,700 psi | 72% | 2559 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 45,861 psi | 75% | 2664 fps | 99.4% |
| Winchester StaBALL HD | 63.4 gr | 80% | 27,978 psi | 46% | 2418 fps | 99.8% |
| Winchester Supreme 780 | <<locked>> | 82% | 35,766 psi | 59% | 2441 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 75 powders for .300 Blaser Mag. loaded with the .308 | 201gr | RWS Kegelspitz. Winchester StaBALL HD delivers the highest muzzle velocity at 2,930 fps; across all powders the maximum-charge window runs from 1,719 fps to 2,930 fps. ADI AR 2217 gives the best case fill at 100 %, and 75 of the 75 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 1:14.0 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, Vihtavuori N560, Norma MRP rank at the top here: for .300 Blaser Mag. with the .308 | 201gr | RWS Kegelspitz 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.