Load Specifications
Load data in caliber .300 Blaser Mag. with .308 | 182gr | CutEdge MTAC bullet and 88 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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You can find more information in our FAQ: How can I use the Personalized Load Calculator?
Max Load - Barrel Length: 25.6"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2700 | <<locked>> | 82% | 53,287 psi | 87% | 2802 fps | 99.1% |
| Accurate 3100ᴾ | <<locked>> | 100% | 54,781 psi | 90% | 2900 fps | 99.9% |
| Accurate 4064 | <<locked>> | 82% | 52,272 psi | 86% | 2779 fps | 100% |
| Accurate 4350 | <<locked>> | 90% | 53,258 psi | 87% | 2894 fps | 100% |
| Accurate High Country | <<locked>> | 96% | 52,591 psi | 86% | 2995 fps | 97.9% |
| Accurate MAGPRO | <<locked>> | 98% | 53,592 psi | 88% | 2992 fps | 96.8% |
| ADI AR 2208 | <<locked>> | 84% | 52,852 psi | 87% | 2818 fps | 100% |
| ADI AR 2209 | <<locked>> | 96% | 54,578 psi | 90% | 2946 fps | 98.8% |
| ADI AR 2213 | <<locked>> | 98% | 52,330 psi | 86% | 2940 fps | 97.4% |
| Alliant Power Pro Varmint | <<locked>> | 96% | 54,737 psi | 90% | 2943 fps | 98.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 53,534 psi | 88% | 2838 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 53,838 psi | 88% | 2864 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 92% | 54,389 psi | 89% | 2956 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 86% | 51,938 psi | 85% | 2923 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 96% | 53,998 psi | 89% | 2936 fps | 98.8% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 54,969 psi | 90% | 2995 fps | 99% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 51,721 psi | 85% | 2917 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 44,788 psi | 74% | 2848 fps | 99.7% |
| Alliant Reloder-26 | <<locked>> | 96% | 51,590 psi | 85% | 3002 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 50,096 psi | 82% | 2913 fps | 98.2% |
| Bofors RP3 | <<locked>> | 84% | 54,143 psi | 89% | 2854 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 54,969 psi | 90% | 2995 fps | 99% |
| Bofors RP7 | <<locked>> | 88% | 53,722 psi | 88% | 2844 fps | 99.2% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 44,614 psi | 73% | 2789 fps | 96.3% |
| Hodgdon H380 | <<locked>> | 84% | 54,621 psi | 90% | 2877 fps | 100% |
| Hodgdon H414 | <<locked>> | 88% | 52,025 psi | 85% | 2894 fps | 99.4% |
| Hodgdon H4350 | <<locked>> | 86% | 51,866 psi | 85% | 2854 fps | 98.6% |
| Hodgdon H4831 | <<locked>> | 96% | 52,286 psi | 86% | 2884 fps | 96.8% |
| Hodgdon H4831 SC | <<locked>> | 98% | 54,955 psi | 90% | 2927 fps | 97.3% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 54,650 psi | 90% | 2874 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 44,019 psi | 72% | 2890 fps | 97.8% |
| Hodgdon Superformance | <<locked>> | 88% | 51,967 psi | 85% | 2930 fps | 99.3% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,492 psi | 60% | 1788 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 52,373 psi | 86% | 2802 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 82% | 54,853 psi | 90% | 2838 fps | 99.6% |
| IMR 4350 | <<locked>> | 92% | 54,839 psi | 90% | 2884 fps | 99.4% |
| IMR 4451 Enduron | <<locked>> | 86% | 52,228 psi | 86% | 2822 fps | 99.3% |
| IMR 4831 | <<locked>> | 92% | 54,012 psi | 89% | 2890 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 54,041 psi | 89% | 2874 fps | 97.3% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 53,330 psi | 88% | 2972 fps | 97.7% |
| Lovex S062 | <<locked>> | 82% | 52,388 psi | 86% | 2792 fps | 100% |
| Lovex S065 | <<locked>> | 88% | 52,127 psi | 86% | 2818 fps | 99.9% |
| Lovex S070 | <<locked>> | 90% | 53,417 psi | 88% | 2861 fps | 99.6% |
| Lovex S071ᴾ | <<locked>> | 100% | 45,411 psi | 75% | 2753 fps | 99.2% |
| Norma 203B | <<locked>> | 82% | 53,142 psi | 87% | 2848 fps | 100% |
| Norma 204 | <<locked>> | 90% | 52,025 psi | 85% | 2881 fps | 98.3% |
| Norma MRP | <<locked>> | 98% | 54,433 psi | 89% | 3018 fps | 99.7% |
| Norma URP | <<locked>> | 90% | 52,301 psi | 86% | 2884 fps | 100% |
| Ramshot Big Game | <<locked>> | 82% | 53,722 psi | 88% | 2874 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 53,592 psi | 88% | 2986 fps | 98.1% |
| Ramshot Hunter | <<locked>> | 92% | 54,549 psi | 90% | 2936 fps | 99.9% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 47,863 psi | 79% | 2861 fps | 98.5% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,970 psi | 61% | 1827 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 54,708 psi | 90% | 2864 fps | 99.8% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 51,314 psi | 84% | 2910 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 53,272 psi | 87% | 2920 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 51,895 psi | 85% | 2949 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 43,859 psi | 72% | 2881 fps | 98.7% |
| Rottweil R 902 | <<locked>> | 82% | 54,288 psi | 89% | 2805 fps | 100% |
| Rottweil R 903 | <<locked>> | 86% | 54,244 psi | 89% | 2851 fps | 100% |
| Rottweil R 904 | <<locked>> | 94% | 52,721 psi | 87% | 2858 fps | 97.5% |
| Rottweil R 905 | <<locked>> | 96% | 53,011 psi | 87% | 2917 fps | 98.7% |
| Rottweil R 907 | <<locked>> | 88% | 53,722 psi | 88% | 2844 fps | 99.2% |
| Shooters World Long Rifle | <<locked>> | 88% | 52,127 psi | 86% | 2818 fps | 99.9% |
| Shooters World Precision | <<locked>> | 82% | 52,388 psi | 86% | 2792 fps | 100% |
| Shooters World SW4350 | <<locked>> | 90% | 53,417 psi | 88% | 2861 fps | 99.6% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 52,591 psi | 86% | 2864 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 52,214 psi | 86% | 2690 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 51,735 psi | 85% | 2772 fps | 99.3% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 52,547 psi | 86% | 2913 fps | 98.7% |
| Somchem S355 | <<locked>> | 86% | 54,273 psi | 89% | 2848 fps | 100% |
| Somchem S361 | <<locked>> | 94% | 54,201 psi | 89% | 2851 fps | 97.1% |
| Somchem S365 | <<locked>> | 92% | 51,547 psi | 85% | 2881 fps | 100% |
| Somchem S385 | <<locked>> | 96% | 53,548 psi | 88% | 2890 fps | 99.3% |
| Vihtavuori N135 | <<locked>> | 82% | 54,853 psi | 90% | 2759 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 54,984 psi | 90% | 2776 fps | 100% |
| Vihtavuori N150 | <<locked>> | 86% | 52,127 psi | 86% | 2772 fps | 100% |
| Vihtavuori N160 | <<locked>> | 90% | 54,288 psi | 89% | 2874 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 52,910 psi | 87% | 2867 fps | 99% |
| Vihtavuori N540 | <<locked>> | 82% | 53,156 psi | 87% | 2776 fps | 100% |
| Vihtavuori N550 | <<locked>> | 90% | 53,461 psi | 88% | 2881 fps | 100% |
| Vihtavuori N555 | <<locked>> | 98% | 54,070 psi | 89% | 2943 fps | 100% |
| Vihtavuori N560 | <<locked>> | 98% | 54,694 psi | 90% | 3009 fps | 97.6% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 46,543 psi | 76% | 2854 fps | 96.1% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 53,925 psi | 89% | 2841 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 52,243 psi | 86% | 2897 fps | 99.5% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 47,079 psi | 77% | 2986 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 53,766 psi | 88% | 2887 fps | 98.6% |
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 2700 | <<locked>> | 80% | 49,966 psi | 82% | 2746 fps | 98.6% |
| Accurate 3100 | <<locked>> | 84% | 31,473 psi | 52% | 2454 fps | 95.5% |
| Accurate 4064 | <<locked>> | 80% | 49,139 psi | 81% | 2733 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 37,565 psi | 62% | 2612 fps | 98.9% |
| Accurate High Country | 69.8 gr | 90% | 42,366 psi | 70% | 2802 fps | 95.3% |
| Accurate MAGPRO | <<locked>> | 94% | 46,282 psi | 76% | 2864 fps | 95% |
| ADI AR 2208 | <<locked>> | 80% | 46,615 psi | 77% | 2717 fps | 100% |
| ADI AR 2209 | <<locked>> | 86% | 39,160 psi | 64% | 2654 fps | 95.2% |
| ADI AR 2213 | <<locked>> | 94% | 45,469 psi | 75% | 2812 fps | 95.7% |
| Alliant Power Pro Varmint | <<locked>> | 86% | 39,204 psi | 64% | 2651 fps | 95.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 47,108 psi | 77% | 2740 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 50,415 psi | 83% | 2812 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 36,680 psi | 60% | 2625 fps | 99.1% |
| Alliant Reloder-17 | <<locked>> | 80% | 41,785 psi | 69% | 2749 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 86% | 38,798 psi | 64% | 2648 fps | 95.2% |
| Alliant Reloder-22 | <<locked>> | 90% | 38,928 psi | 64% | 2697 fps | 95.5% |
| Alliant Reloder-23 | <<locked>> | 80% | 26,687 psi | 44% | 2375 fps | 97.1% |
| Alliant Reloder-25 | <<locked>> | 88% | 30,414 psi | 50% | 2500 fps | 95.5% |
| Alliant Reloder-26 | 63.9 gr | 80% | 28,398 psi | 47% | 2484 fps | 95.4% |
| Bofors RP15 | <<locked>> | 92% | 38,580 psi | 63% | 2684 fps | 95.2% |
| Bofors RP3 | <<locked>> | 80% | 47,340 psi | 78% | 2749 fps | 100% |
| Bofors RP5 | <<locked>> | 90% | 38,928 psi | 64% | 2697 fps | 95.5% |
| Bofors RP7 | <<locked>> | 80% | 41,698 psi | 68% | 2628 fps | 97.2% |
| Hodgdon H1000 | <<locked>> | 98% | 41,655 psi | 68% | 2726 fps | 95.3% |
| Hodgdon H380 | <<locked>> | 80% | 47,877 psi | 79% | 2766 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 80% | 39,639 psi | 65% | 2661 fps | 97.3% |
| Hodgdon H4350 | <<locked>> | 80% | 42,627 psi | 70% | 2680 fps | 96.7% |
| Hodgdon H4831 | <<locked>> | 92% | 45,614 psi | 75% | 2762 fps | 95.1% |
| Hodgdon H4831 SC | <<locked>> | 94% | 47,732 psi | 78% | 2802 fps | 95.7% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 34,127 psi | 56% | 2513 fps | 99.4% |
| Hodgdon Retumbo | <<locked>> | 96% | 38,566 psi | 63% | 2759 fps | 95.8% |
| Hodgdon Superformance | <<locked>> | 80% | 38,551 psi | 63% | 2671 fps | 96.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,064 psi | 44% | 1591 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 49,037 psi | 81% | 2749 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 80% | 51,445 psi | 84% | 2785 fps | 99.3% |
| IMR 4350 | <<locked>> | 80% | 37,449 psi | 61% | 2559 fps | 95.9% |
| IMR 4451 Enduron | <<locked>> | 80% | 43,265 psi | 71% | 2661 fps | 97.9% |
| IMR 4831 | <<locked>> | 80% | 36,143 psi | 59% | 2566 fps | 98.7% |
| IMR 4955 Enduron | <<locked>> | 90% | 44,541 psi | 73% | 2707 fps | 95% |
| IMR 7828 SSC | <<locked>> | 94% | 43,439 psi | 71% | 2785 fps | 95.2% |
| Lovex S062 | <<locked>> | 80% | 49,298 psi | 81% | 2746 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 40,553 psi | 67% | 2608 fps | 98.5% |
| Lovex S070 | <<locked>> | 80% | 38,696 psi | 64% | 2585 fps | 97.1% |
| Lovex S071 | <<locked>> | 88% | 30,603 psi | 50% | 2431 fps | 95.1% |
| Norma 203B | <<locked>> | 80% | 49,792 psi | 82% | 2799 fps | 100% |
| Norma 204 | <<locked>> | 82% | 39,537 psi | 65% | 2641 fps | 95.2% |
| Norma MRP | 66.7 gr | 86% | 35,549 psi | 58% | 2644 fps | 95.8% |
| Norma URP | <<locked>> | 80% | 37,420 psi | 61% | 2605 fps | 98.8% |
| Ramshot Big Game | <<locked>> | 80% | 50,328 psi | 83% | 2822 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 43,134 psi | 71% | 2792 fps | 95.5% |
| Ramshot Hunter | <<locked>> | 80% | 36,318 psi | 60% | 2595 fps | 97.1% |
| Ramshot Magnum | <<locked>> | 94% | 38,290 psi | 63% | 2667 fps | 96% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,572 psi | 45% | 1631 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 47,950 psi | 79% | 2749 fps | 99.2% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 44,483 psi | 73% | 2799 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 37,376 psi | 61% | 2628 fps | 98.7% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 36,419 psi | 60% | 2641 fps | 98.2% |
| ReloadSwiss RS 76 | <<locked>> | 94% | 35,346 psi | 58% | 2674 fps | 95.6% |
| Rottweil R 902 | <<locked>> | 80% | 50,850 psi | 83% | 2753 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 44,498 psi | 73% | 2697 fps | 100% |
| Rottweil R 904 | <<locked>> | 88% | 43,395 psi | 71% | 2690 fps | 95.3% |
| Rottweil R 905 | <<locked>> | 86% | 37,913 psi | 62% | 2631 fps | 95.2% |
| Rottweil R 907 | <<locked>> | 80% | 41,698 psi | 68% | 2628 fps | 97.2% |
| Shooters World Long Rifle | <<locked>> | 80% | 40,553 psi | 67% | 2608 fps | 98.5% |
| Shooters World Precision | <<locked>> | 80% | 49,298 psi | 81% | 2746 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 38,696 psi | 64% | 2585 fps | 97.1% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 45,919 psi | 75% | 2753 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 45,890 psi | 75% | 2598 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 39,639 psi | 65% | 2552 fps | 97.2% |
| SNPE Vectan Tubal 8000 | <<locked>> | 86% | 37,565 psi | 62% | 2625 fps | 95% |
| Somchem S355 | <<locked>> | 80% | 44,947 psi | 74% | 2697 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 47,514 psi | 78% | 2740 fps | 95.6% |
| Somchem S365 | <<locked>> | 80% | 33,982 psi | 56% | 2566 fps | 99.9% |
| Somchem S385 | <<locked>> | 84% | 35,853 psi | 59% | 2552 fps | 95.4% |
| Vihtavuori N135 | <<locked>> | 80% | 51,271 psi | 84% | 2713 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 51,532 psi | 85% | 2730 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 42,859 psi | 70% | 2625 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 38,928 psi | 64% | 2608 fps | 99.1% |
| Vihtavuori N165 | <<locked>> | 90% | 37,840 psi | 62% | 2592 fps | 95.7% |
| Vihtavuori N540 | <<locked>> | 80% | 49,864 psi | 82% | 2726 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 38,334 psi | 63% | 2608 fps | 98.8% |
| Vihtavuori N555 | <<locked>> | 80% | 29,399 psi | 48% | 2451 fps | 97.1% |
| Vihtavuori N560 | <<locked>> | 92% | 44,512 psi | 73% | 2825 fps | 95.1% |
| Vihtavuori N565 | <<locked>> | 98% | 43,250 psi | 71% | 2792 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 38,029 psi | 62% | 2575 fps | 99.9% |
| Winchester 760 | <<locked>> | 80% | 39,798 psi | 65% | 2664 fps | 97.3% |
| Winchester StaBALL HD | <<locked>> | 80% | 23,395 psi | 38% | 2339 fps | 95.7% |
| Winchester Supreme 780 | <<locked>> | 90% | 40,451 psi | 66% | 2651 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 88 powders for .300 Blaser Mag. loaded with the .308 | 182gr | CutEdge MTAC. Norma MRP delivers the highest muzzle velocity at 3,018 fps; across all powders the maximum-charge window runs from 1,788 fps to 3,018 fps. Accurate 3100 gives the best case fill at 100 %, and 88 of the 88 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 182.0 gr projectile in 0.308" calls for a 1:11.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, Alliant Reloder-22, Alliant Reloder-23 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 | 182gr | CutEdge MTAC 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.