Load Specifications
Load data in caliber .300 Blaser Mag. with .308 | 185gr | RWS Evolution bullet and 78 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-26, Accurate High Country 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>> | 96% | 51,648 psi | 85% | 2831 fps | 99.9% |
| Accurate 4350 | <<locked>> | 88% | 53,447 psi | 88% | 2874 fps | 100% |
| Accurate High Country | <<locked>> | 94% | 52,779 psi | 87% | 2976 fps | 98.2% |
| Accurate MAGPRO | <<locked>> | 96% | 53,577 psi | 88% | 2972 fps | 97.1% |
| ADI AR 2208 | <<locked>> | 82% | 52,344 psi | 86% | 2792 fps | 100% |
| ADI AR 2209 | <<locked>> | 94% | 54,273 psi | 89% | 2923 fps | 99% |
| ADI AR 2213 | <<locked>> | 96% | 51,953 psi | 85% | 2920 fps | 97.7% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 38,392 psi | 63% | 2703 fps | 97.5% |
| Alliant Power Pro Varmint | <<locked>> | 94% | 54,534 psi | 90% | 2923 fps | 99% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 53,243 psi | 87% | 2812 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 90% | 54,375 psi | 89% | 2933 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 84% | 51,721 psi | 85% | 2894 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 94% | 53,824 psi | 88% | 2913 fps | 99% |
| Alliant Reloder-22 | <<locked>> | 96% | 51,445 psi | 84% | 2920 fps | 98.8% |
| Alliant Reloder-23 | <<locked>> | 98% | 52,156 psi | 86% | 2897 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 48,370 psi | 79% | 2897 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 94% | 52,156 psi | 86% | 2986 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 53,824 psi | 88% | 2956 fps | 99% |
| Bofors RP3 | <<locked>> | 82% | 54,056 psi | 89% | 2828 fps | 100% |
| Bofors RP30ᴾ | <<locked>> | 100% | 44,237 psi | 73% | 2822 fps | 96.7% |
| Bofors RP5 | <<locked>> | 96% | 51,445 psi | 84% | 2920 fps | 98.8% |
| Bofors RP7 | <<locked>> | 86% | 53,417 psi | 88% | 2825 fps | 99.4% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 47,703 psi | 78% | 2835 fps | 97.6% |
| Hodgdon H380 | <<locked>> | 82% | 54,302 psi | 89% | 2848 fps | 100% |
| Hodgdon H414 | <<locked>> | 86% | 51,909 psi | 85% | 2871 fps | 99.6% |
| Hodgdon H4350 | <<locked>> | 86% | 54,940 psi | 90% | 2884 fps | 99.2% |
| Hodgdon H4831 | <<locked>> | 94% | 51,967 psi | 85% | 2861 fps | 97% |
| Hodgdon H4831 SC | <<locked>> | 96% | 54,578 psi | 90% | 2900 fps | 97.5% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 54,665 psi | 90% | 2851 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 47,311 psi | 78% | 2943 fps | 98.9% |
| Hodgdon Superformance | <<locked>> | 86% | 51,692 psi | 85% | 2904 fps | 99.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,724 psi | 60% | 1785 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 55,114 psi | 90% | 2822 fps | 100% |
| IMR 4350 | <<locked>> | 90% | 54,592 psi | 90% | 2861 fps | 99.5% |
| IMR 4451 Enduron | <<locked>> | 86% | 54,882 psi | 90% | 2848 fps | 99.7% |
| IMR 4831 | <<locked>> | 90% | 53,954 psi | 89% | 2867 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 53,621 psi | 88% | 2851 fps | 97.5% |
| IMR 7828 SSC | <<locked>> | 98% | 53,258 psi | 87% | 2953 fps | 98% |
| Lovex S065 | <<locked>> | 86% | 52,025 psi | 85% | 2795 fps | 99.9% |
| Lovex S070 | <<locked>> | 88% | 53,287 psi | 87% | 2841 fps | 99.7% |
| Lovex S071ᴾ | <<locked>> | 100% | 49,197 psi | 81% | 2792 fps | 99.7% |
| Norma 204 | <<locked>> | 88% | 51,677 psi | 85% | 2854 fps | 98.5% |
| Norma MRP | <<locked>> | 96% | 54,679 psi | 90% | 3002 fps | 99.8% |
| Norma URP | <<locked>> | 88% | 52,257 psi | 86% | 2858 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 53,737 psi | 88% | 2972 fps | 98.4% |
| Ramshot Hunter | <<locked>> | 90% | 54,534 psi | 90% | 2917 fps | 100% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 51,590 psi | 85% | 2907 fps | 99.3% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,463 psi | 62% | 1827 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 54,172 psi | 89% | 2835 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 54,911 psi | 90% | 2936 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 53,330 psi | 88% | 2897 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 51,663 psi | 85% | 2923 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 47,427 psi | 78% | 2940 fps | 99.6% |
| Rottweil R 903 | <<locked>> | 84% | 54,360 psi | 89% | 2828 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 52,475 psi | 86% | 2838 fps | 97.8% |
| Rottweil R 905 | <<locked>> | 94% | 53,243 psi | 87% | 2900 fps | 99% |
| Rottweil R 907 | <<locked>> | 86% | 53,417 psi | 88% | 2825 fps | 99.4% |
| Shooters World Long Rifle | <<locked>> | 86% | 52,025 psi | 85% | 2795 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 88% | 53,287 psi | 87% | 2841 fps | 99.7% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 52,301 psi | 86% | 2835 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 54,868 psi | 90% | 2707 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 54,766 psi | 90% | 2799 fps | 99.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 52,794 psi | 87% | 2897 fps | 98.9% |
| Somchem S355 | <<locked>> | 84% | 54,230 psi | 89% | 2825 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 54,070 psi | 89% | 2835 fps | 97.4% |
| Somchem S365 | <<locked>> | 90% | 51,967 psi | 85% | 2864 fps | 100% |
| Somchem S385 | <<locked>> | 94% | 53,780 psi | 88% | 2874 fps | 99.5% |
| Vihtavuori N150 | <<locked>> | 84% | 51,996 psi | 85% | 2749 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 54,099 psi | 89% | 2851 fps | 100% |
| Vihtavuori N165 | <<locked>> | 98% | 53,200 psi | 87% | 2851 fps | 99.2% |
| Vihtavuori N550 | <<locked>> | 88% | 53,345 psi | 88% | 2858 fps | 100% |
| Vihtavuori N555 | <<locked>> | 96% | 54,737 psi | 90% | 2927 fps | 100% |
| Vihtavuori N560 | <<locked>> | 96% | 54,766 psi | 90% | 2992 fps | 97.9% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 50,314 psi | 83% | 2900 fps | 97.3% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 53,490 psi | 88% | 2815 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 52,141 psi | 86% | 2874 fps | 99.6% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 52,069 psi | 85% | 3028 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 53,650 psi | 88% | 2867 fps | 98.9% |
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% | 30,066 psi | 49% | 2392 fps | 95.2% |
| Accurate 4350 | <<locked>> | 80% | 40,727 psi | 67% | 2654 fps | 99.6% |
| Accurate High Country | 70 gr | 88% | 42,786 psi | 70% | 2789 fps | 95.8% |
| Accurate MAGPRO | <<locked>> | 92% | 46,601 psi | 77% | 2851 fps | 95.4% |
| ADI AR 2208 | <<locked>> | 80% | 49,182 psi | 81% | 2740 fps | 100% |
| ADI AR 2209 | <<locked>> | 84% | 39,102 psi | 64% | 2635 fps | 95.6% |
| ADI AR 2213 | <<locked>> | 90% | 42,583 psi | 70% | 2736 fps | 95.2% |
| ADI AR 2225 | <<locked>> | 96% | 33,794 psi | 55% | 2582 fps | 95.5% |
| Alliant Power Pro Varmint | <<locked>> | 84% | 39,450 psi | 65% | 2641 fps | 95.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 50,024 psi | 82% | 2766 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 39,247 psi | 64% | 2661 fps | 99.6% |
| Alliant Reloder-17 | <<locked>> | 80% | 44,889 psi | 74% | 2782 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 84% | 39,044 psi | 64% | 2631 fps | 95.7% |
| Alliant Reloder-22 | <<locked>> | 86% | 36,840 psi | 60% | 2625 fps | 95.1% |
| Alliant Reloder-23 | <<locked>> | 80% | 29,037 psi | 48% | 2428 fps | 98.4% |
| Alliant Reloder-25 | <<locked>> | 84% | 28,950 psi | 48% | 2434 fps | 95.1% |
| Alliant Reloder-26 | 65.6 gr | 80% | 31,183 psi | 51% | 2546 fps | 97.3% |
| Bofors RP15 | <<locked>> | 90% | 38,928 psi | 64% | 2674 fps | 95.7% |
| Bofors RP3 | <<locked>> | 80% | 50,705 psi | 83% | 2779 fps | 100% |
| Bofors RP30 | <<locked>> | 98% | 41,437 psi | 68% | 2762 fps | 95.9% |
| Bofors RP5 | <<locked>> | 86% | 36,840 psi | 60% | 2625 fps | 95.1% |
| Bofors RP7 | <<locked>> | 80% | 44,280 psi | 73% | 2661 fps | 98.1% |
| Hodgdon H1000 | <<locked>> | 96% | 41,640 psi | 68% | 2713 fps | 95.8% |
| Hodgdon H380 | <<locked>> | 80% | 50,749 psi | 83% | 2792 fps | 100% |
| Hodgdon H414 | <<locked>> | 80% | 42,496 psi | 70% | 2700 fps | 98.2% |
| Hodgdon H4350 | <<locked>> | 80% | 45,382 psi | 75% | 2720 fps | 97.7% |
| Hodgdon H4831 | <<locked>> | 90% | 45,440 psi | 75% | 2743 fps | 95.5% |
| Hodgdon H4831 SC | <<locked>> | 90% | 44,672 psi | 73% | 2730 fps | 95.2% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 36,869 psi | 61% | 2549 fps | 99.8% |
| Hodgdon Retumbo | <<locked>> | 92% | 36,550 psi | 60% | 2690 fps | 95.4% |
| Hodgdon Superformance | <<locked>> | 80% | 41,568 psi | 68% | 2720 fps | 97.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,543 psi | 45% | 1594 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 51,735 psi | 85% | 2772 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 39,856 psi | 65% | 2592 fps | 97% |
| IMR 4451 Enduron | <<locked>> | 80% | 45,658 psi | 75% | 2690 fps | 98.7% |
| IMR 4831 | <<locked>> | 80% | 38,972 psi | 64% | 2602 fps | 99.4% |
| IMR 4955 Enduron | <<locked>> | 88% | 44,570 psi | 73% | 2690 fps | 95.4% |
| IMR 7828 SSC | <<locked>> | 92% | 43,569 psi | 72% | 2772 fps | 95.7% |
| Lovex S065 | <<locked>> | 80% | 43,221 psi | 71% | 2641 fps | 99.2% |
| Lovex S070 | <<locked>> | 80% | 41,539 psi | 68% | 2628 fps | 98.1% |
| Lovex S071 | <<locked>> | 84% | 29,559 psi | 49% | 2379 fps | 95% |
| Norma 204 | <<locked>> | 80% | 39,392 psi | 65% | 2621 fps | 95.6% |
| Norma MRP | 65.3 gr | 82% | 33,634 psi | 55% | 2575 fps | 95.4% |
| Norma URP | <<locked>> | 80% | 40,350 psi | 66% | 2644 fps | 99.5% |
| Ramshot Grand | <<locked>> | 90% | 40,306 psi | 66% | 2717 fps | 95% |
| Ramshot Hunter | <<locked>> | 80% | 39,073 psi | 64% | 2635 fps | 98.2% |
| Ramshot Magnum | <<locked>> | 90% | 35,984 psi | 59% | 2595 fps | 95.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,094 psi | 46% | 1634 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 50,778 psi | 83% | 2782 fps | 99.7% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 47,630 psi | 78% | 2828 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 40,451 psi | 66% | 2671 fps | 99.4% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 39,044 psi | 64% | 2684 fps | 99.1% |
| ReloadSwiss RS 76 | <<locked>> | 90% | 33,431 psi | 55% | 2602 fps | 95.1% |
| Rottweil R 903 | <<locked>> | 80% | 47,848 psi | 79% | 2730 fps | 100% |
| Rottweil R 904 | <<locked>> | 86% | 43,366 psi | 71% | 2674 fps | 95.7% |
| Rottweil R 905 | <<locked>> | 84% | 38,189 psi | 63% | 2615 fps | 95.6% |
| Rottweil R 907 | <<locked>> | 80% | 44,280 psi | 73% | 2661 fps | 98.1% |
| Shooters World Long Rifle | <<locked>> | 80% | 43,221 psi | 71% | 2641 fps | 99.2% |
| Shooters World SW4350 | <<locked>> | 80% | 41,539 psi | 68% | 2628 fps | 98.1% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 48,878 psi | 80% | 2782 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 48,486 psi | 80% | 2618 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 42,337 psi | 70% | 2589 fps | 98.2% |
| SNPE Vectan Tubal 8000 | <<locked>> | 84% | 37,840 psi | 62% | 2608 fps | 95.5% |
| Somchem S355 | <<locked>> | 80% | 47,834 psi | 79% | 2723 fps | 100% |
| Somchem S361 | <<locked>> | 86% | 44,280 psi | 73% | 2661 fps | 95.1% |
| Somchem S365 | <<locked>> | 80% | 36,912 psi | 61% | 2605 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 34,011 psi | 56% | 2487 fps | 95% |
| Vihtavuori N150 | <<locked>> | 80% | 45,803 psi | 75% | 2651 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 41,655 psi | 68% | 2641 fps | 99.6% |
| Vihtavuori N165 | <<locked>> | 86% | 35,781 psi | 59% | 2523 fps | 95.3% |
| Vihtavuori N550 | <<locked>> | 80% | 41,017 psi | 67% | 2644 fps | 99.4% |
| Vihtavuori N555 | <<locked>> | 80% | 32,329 psi | 53% | 2503 fps | 98.4% |
| Vihtavuori N560 | <<locked>> | 90% | 44,570 psi | 73% | 2808 fps | 95.6% |
| Vihtavuori N565 | <<locked>> | 96% | 43,976 psi | 72% | 2785 fps | 95.7% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 40,727 psi | 67% | 2608 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 42,699 psi | 70% | 2703 fps | 98.3% |
| Winchester StaBALL HD | <<locked>> | 80% | 25,672 psi | 42% | 2418 fps | 98% |
| Winchester Supreme 780 | <<locked>> | 86% | 37,971 psi | 62% | 2579 fps | 95.3% |
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 78 powders for .300 Blaser Mag. loaded with the .308 | 185gr | RWS Evolution. Winchester StaBALL HD delivers the highest muzzle velocity at 3,028 fps; across all powders the maximum-charge window runs from 1,785 fps to 3,028 fps. ADI AR 2225 gives the best case fill at 100 %, and 78 of the 78 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 185.0 gr projectile in 0.308" calls for a 1:13.0 twist; slower twists will usually not stabilise this weight. ADI AR 2225, Alliant Reloder-25, Bofors RP15 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. Alliant Reloder-26, Accurate High Country, Norma MRP rank at the top here: for .300 Blaser Mag. with the .308 | 185gr | RWS Evolution 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.