Load Specifications
Load data in caliber .300 Blaser Mag. with .308 | 180gr | SUS-TAC HPT bullet and 87 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-26, Norma MRP and ReloadSwiss RS 70.
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 2495 | <<locked>> | 82% | 54,998 psi | 90% | 2766 fps | 100% |
| Accurate 2700 | <<locked>> | 82% | 52,663 psi | 86% | 2789 fps | 98.7% |
| Accurate 3100ᴾ | <<locked>> | 100% | 53,867 psi | 88% | 2887 fps | 99.8% |
| Accurate 4064 | <<locked>> | 82% | 52,040 psi | 85% | 2776 fps | 100% |
| Accurate 4350 | <<locked>> | 90% | 52,475 psi | 86% | 2884 fps | 100% |
| Accurate MAGPRO | <<locked>> | 98% | 52,069 psi | 85% | 2966 fps | 96.1% |
| ADI AR 2208 | <<locked>> | 84% | 52,199 psi | 86% | 2808 fps | 100% |
| ADI AR 2209 | <<locked>> | 96% | 53,577 psi | 88% | 2927 fps | 98.4% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 54,723 psi | 90% | 2976 fps | 97.5% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 54,737 psi | 90% | 2982 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 52,953 psi | 87% | 2831 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 52,982 psi | 87% | 2851 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 92% | 53,301 psi | 88% | 2940 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 88% | 54,520 psi | 90% | 2963 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 96% | 52,750 psi | 87% | 2913 fps | 98.3% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 53,519 psi | 88% | 2972 fps | 98.6% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 50,720 psi | 83% | 2907 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 43,990 psi | 72% | 2831 fps | 99.5% |
| Alliant Reloder-26 | <<locked>> | 98% | 54,273 psi | 89% | 3045 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 49,037 psi | 81% | 2894 fps | 97.7% |
| Bofors RP3 | <<locked>> | 84% | 53,534 psi | 88% | 2844 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 53,519 psi | 88% | 2972 fps | 98.6% |
| Bofors RP7 | <<locked>> | 88% | 53,113 psi | 87% | 2835 fps | 99% |
| Hodgdon H380 | <<locked>> | 84% | 53,969 psi | 89% | 2864 fps | 100% |
| Hodgdon H414 | <<locked>> | 90% | 54,679 psi | 90% | 2936 fps | 99.5% |
| Hodgdon H4350 | <<locked>> | 88% | 54,607 psi | 90% | 2897 fps | 98.7% |
| Hodgdon H4831 | <<locked>> | 98% | 54,868 psi | 90% | 2920 fps | 96.9% |
| Hodgdon H4831 SC | <<locked>> | 98% | 53,838 psi | 88% | 2904 fps | 96.7% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 53,664 psi | 88% | 2861 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 43,105 psi | 71% | 2864 fps | 97% |
| Hodgdon Superformance | <<locked>> | 90% | 54,853 psi | 90% | 2972 fps | 99.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,347 psi | 60% | 1778 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 54,969 psi | 90% | 2838 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 82% | 54,056 psi | 89% | 2825 fps | 99.4% |
| IMR 4350 | <<locked>> | 92% | 53,998 psi | 89% | 2867 fps | 99.1% |
| IMR 4451 Enduron | <<locked>> | 88% | 54,694 psi | 90% | 2861 fps | 99.4% |
| IMR 4831 | <<locked>> | 92% | 52,982 psi | 87% | 2874 fps | 100% |
| IMR 4895 | <<locked>> | 82% | 54,389 psi | 89% | 2877 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 53,185 psi | 87% | 2854 fps | 96.7% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 52,040 psi | 85% | 2946 fps | 97.1% |
| Lovex S062 | <<locked>> | 84% | 55,100 psi | 90% | 2831 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 54,824 psi | 90% | 2858 fps | 99.9% |
| Lovex S070 | <<locked>> | 90% | 52,721 psi | 87% | 2848 fps | 99.4% |
| Lovex S071ᴾ | <<locked>> | 100% | 44,788 psi | 74% | 2740 fps | 98.9% |
| Norma 203B | <<locked>> | 82% | 52,315 psi | 86% | 2838 fps | 100% |
| Norma 204 | <<locked>> | 92% | 54,578 psi | 90% | 2920 fps | 98.4% |
| Norma MRP | <<locked>> | 98% | 53,214 psi | 87% | 3002 fps | 99.5% |
| Norma URP | <<locked>> | 92% | 54,752 psi | 90% | 2920 fps | 100% |
| Ramshot Big Game | <<locked>> | 82% | 52,968 psi | 87% | 2861 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 52,315 psi | 86% | 2963 fps | 97.5% |
| Ramshot Hunter | <<locked>> | 92% | 53,548 psi | 88% | 2923 fps | 99.8% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 46,688 psi | 77% | 2835 fps | 98% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,086 psi | 61% | 1821 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 53,853 psi | 88% | 2848 fps | 99.6% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 54,041 psi | 89% | 2956 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 52,272 psi | 86% | 2904 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 54,476 psi | 89% | 2992 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 42,989 psi | 71% | 2858 fps | 98.1% |
| Rottweil R 902 | <<locked>> | 82% | 53,780 psi | 88% | 2795 fps | 100% |
| Rottweil R 903 | <<locked>> | 86% | 53,621 psi | 88% | 2841 fps | 100% |
| Rottweil R 904 | <<locked>> | 94% | 51,735 psi | 85% | 2841 fps | 97% |
| Rottweil R 905 | <<locked>> | 96% | 51,996 psi | 85% | 2900 fps | 98.3% |
| Rottweil R 907 | <<locked>> | 88% | 53,113 psi | 87% | 2835 fps | 99% |
| Shooters World Long Rifle | <<locked>> | 90% | 54,824 psi | 90% | 2858 fps | 99.9% |
| Shooters World Precision | <<locked>> | 84% | 55,100 psi | 90% | 2831 fps | 100% |
| Shooters World SW4350 | <<locked>> | 90% | 52,721 psi | 87% | 2848 fps | 99.4% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 55,114 psi | 90% | 2904 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 54,636 psi | 90% | 2723 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 54,302 psi | 89% | 2808 fps | 99.4% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 54,984 psi | 90% | 2949 fps | 98.7% |
| Somchem S355 | <<locked>> | 86% | 53,824 psi | 88% | 2841 fps | 100% |
| Somchem S361 | <<locked>> | 94% | 53,287 psi | 87% | 2831 fps | 96.5% |
| Somchem S365 | <<locked>> | 94% | 53,998 psi | 89% | 2920 fps | 100% |
| Somchem S385 | <<locked>> | 96% | 52,721 psi | 87% | 2877 fps | 99% |
| Vihtavuori N135 | <<locked>> | 82% | 54,099 psi | 89% | 2753 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 54,346 psi | 89% | 2769 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 55,013 psi | 90% | 2815 fps | 100% |
| Vihtavuori N160 | <<locked>> | 90% | 53,388 psi | 88% | 2861 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 51,909 psi | 85% | 2848 fps | 98.6% |
| Vihtavuori N540 | <<locked>> | 82% | 52,489 psi | 86% | 2766 fps | 100% |
| Vihtavuori N550 | <<locked>> | 90% | 52,504 psi | 86% | 2867 fps | 100% |
| Vihtavuori N555 | <<locked>> | 98% | 53,127 psi | 87% | 2930 fps | 100% |
| Vihtavuori N560 | <<locked>> | 98% | 53,621 psi | 88% | 2992 fps | 97.1% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 52,982 psi | 87% | 2831 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 54,940 psi | 90% | 2940 fps | 99.6% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 45,774 psi | 75% | 2969 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 52,678 psi | 86% | 2867 fps | 98.2% |
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 2495 | <<locked>> | 80% | 51,590 psi | 85% | 2720 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 49,327 psi | 81% | 2730 fps | 98.2% |
| Accurate 3100 | <<locked>> | 84% | 31,386 psi | 52% | 2451 fps | 95.1% |
| Accurate 4064 | <<locked>> | 80% | 48,878 psi | 80% | 2726 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 37,318 psi | 61% | 2605 fps | 98.7% |
| Accurate MAGPRO | <<locked>> | 96% | 48,588 psi | 80% | 2907 fps | 95.2% |
| ADI AR 2208 | <<locked>> | 80% | 46,180 psi | 76% | 2707 fps | 99.9% |
| ADI AR 2209 | <<locked>> | 88% | 41,234 psi | 68% | 2697 fps | 95.5% |
| ADI AR 2213 | <<locked>> | 94% | 44,744 psi | 73% | 2792 fps | 95% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 51,097 psi | 84% | 2923 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 46,543 psi | 76% | 2730 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 49,850 psi | 82% | 2799 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 36,405 psi | 60% | 2615 fps | 98.8% |
| Alliant Reloder-17 | <<locked>> | 80% | 41,133 psi | 68% | 2736 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 88% | 40,959 psi | 67% | 2694 fps | 95.6% |
| Alliant Reloder-22 | <<locked>> | 92% | 41,118 psi | 68% | 2743 fps | 95.8% |
| Alliant Reloder-23 | <<locked>> | 80% | 26,614 psi | 44% | 2372 fps | 96.7% |
| Alliant Reloder-25 | <<locked>> | 90% | 32,184 psi | 53% | 2546 fps | 96% |
| Alliant Reloder-26 | 63.7 gr | 82% | 30,443 psi | 50% | 2543 fps | 96.1% |
| Bofors RP15 | <<locked>> | 94% | 40,567 psi | 67% | 2726 fps | 95.5% |
| Bofors RP3 | <<locked>> | 80% | 46,963 psi | 77% | 2743 fps | 100% |
| Bofors RP5 | <<locked>> | 92% | 41,118 psi | 68% | 2743 fps | 95.8% |
| Bofors RP7 | <<locked>> | 80% | 41,307 psi | 68% | 2618 fps | 96.7% |
| Hodgdon H380 | <<locked>> | 80% | 47,239 psi | 78% | 2753 fps | 99.7% |
| Hodgdon H414 | <<locked>> | 80% | 39,233 psi | 64% | 2648 fps | 96.8% |
| Hodgdon H4350 | <<locked>> | 80% | 42,134 psi | 69% | 2667 fps | 96.2% |
| Hodgdon H4831 | <<locked>> | 94% | 48,037 psi | 79% | 2805 fps | 95.3% |
| Hodgdon H4831 SC | <<locked>> | 94% | 46,905 psi | 77% | 2785 fps | 95% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 33,866 psi | 56% | 2507 fps | 99.2% |
| Hodgdon Retumbo | <<locked>> | 98% | 40,538 psi | 67% | 2802 fps | 96.1% |
| Hodgdon Superformance | <<locked>> | 80% | 38,189 psi | 63% | 2661 fps | 96.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,267 psi | 45% | 1591 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 48,530 psi | 80% | 2740 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 80% | 50,633 psi | 83% | 2769 fps | 99% |
| IMR 4350 | <<locked>> | 80% | 37,086 psi | 61% | 2546 fps | 95.4% |
| IMR 4451 Enduron | <<locked>> | 80% | 42,772 psi | 70% | 2648 fps | 97.5% |
| IMR 4831 | <<locked>> | 80% | 35,824 psi | 59% | 2556 fps | 98.4% |
| IMR 4895 | <<locked>> | 80% | 51,126 psi | 84% | 2828 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 46,876 psi | 77% | 2746 fps | 95.2% |
| IMR 7828 SSC | <<locked>> | 96% | 45,542 psi | 75% | 2825 fps | 95.4% |
| Lovex S062 | <<locked>> | 80% | 48,747 psi | 80% | 2736 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 40,234 psi | 66% | 2598 fps | 98.2% |
| Lovex S070 | <<locked>> | 80% | 38,609 psi | 63% | 2582 fps | 96.8% |
| Lovex S071 | <<locked>> | 90% | 32,576 psi | 53% | 2480 fps | 95.6% |
| Norma 203B | <<locked>> | 80% | 49,197 psi | 81% | 2785 fps | 100% |
| Norma 204 | <<locked>> | 84% | 41,771 psi | 69% | 2687 fps | 95.6% |
| Norma MRP | 64.8 gr | 86% | 35,143 psi | 58% | 2635 fps | 95.2% |
| Norma URP | <<locked>> | 80% | 37,173 psi | 61% | 2602 fps | 98.5% |
| Ramshot Big Game | <<locked>> | 80% | 49,545 psi | 81% | 2812 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 45,600 psi | 75% | 2838 fps | 95.8% |
| Ramshot Hunter | <<locked>> | 80% | 35,998 psi | 59% | 2585 fps | 96.7% |
| Ramshot Magnum | <<locked>> | 94% | 37,753 psi | 62% | 2651 fps | 95.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,644 psi | 45% | 1627 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 47,297 psi | 78% | 2736 fps | 98.9% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 43,685 psi | 72% | 2789 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 36,898 psi | 61% | 2618 fps | 98.3% |
| ReloadSwiss RS 70 | 61.6 gr | 80% | 36,042 psi | 59% | 2631 fps | 97.8% |
| ReloadSwiss RS 76 | <<locked>> | 96% | 37,376 psi | 61% | 2720 fps | 96% |
| Rottweil R 902 | <<locked>> | 80% | 50,575 psi | 83% | 2746 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 44,295 psi | 73% | 2690 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 45,658 psi | 75% | 2733 fps | 95.6% |
| Rottweil R 905 | <<locked>> | 88% | 39,958 psi | 66% | 2674 fps | 95.5% |
| Rottweil R 907 | <<locked>> | 80% | 41,307 psi | 68% | 2618 fps | 96.7% |
| Shooters World Long Rifle | <<locked>> | 80% | 40,234 psi | 66% | 2598 fps | 98.2% |
| Shooters World Precision | <<locked>> | 80% | 48,747 psi | 80% | 2736 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 38,609 psi | 63% | 2582 fps | 96.8% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 45,382 psi | 75% | 2746 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 45,426 psi | 75% | 2592 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 39,421 psi | 65% | 2543 fps | 96.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 88% | 39,581 psi | 65% | 2667 fps | 95.3% |
| Somchem S355 | <<locked>> | 80% | 44,498 psi | 73% | 2687 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 49,966 psi | 82% | 2779 fps | 95.8% |
| Somchem S365 | <<locked>> | 80% | 33,576 psi | 55% | 2556 fps | 99.8% |
| Somchem S385 | <<locked>> | 86% | 38,043 psi | 62% | 2602 fps | 95.8% |
| Vihtavuori N135 | <<locked>> | 80% | 50,749 psi | 83% | 2707 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 51,111 psi | 84% | 2723 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 42,612 psi | 70% | 2618 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 38,508 psi | 63% | 2598 fps | 98.8% |
| Vihtavuori N165 | <<locked>> | 90% | 37,362 psi | 61% | 2575 fps | 95.1% |
| Vihtavuori N540 | <<locked>> | 80% | 49,182 psi | 81% | 2717 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 37,855 psi | 62% | 2595 fps | 98.5% |
| Vihtavuori N555 | <<locked>> | 80% | 29,370 psi | 48% | 2448 fps | 96.8% |
| Vihtavuori N560 | <<locked>> | 94% | 46,601 psi | 77% | 2864 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 37,637 psi | 62% | 2566 fps | 99.8% |
| Winchester 760 | <<locked>> | 80% | 39,407 psi | 65% | 2654 fps | 96.9% |
| Winchester StaBALL HD | <<locked>> | 80% | 23,569 psi | 39% | 2339 fps | 95.3% |
| Winchester Supreme 780 | <<locked>> | 90% | 39,972 psi | 66% | 2638 fps | 95.2% |
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 94 powders for .300 Blaser Mag. loaded with the .308 | 180gr | SUS-TAC HPT. Alliant Reloder-26 delivers the highest muzzle velocity at 3,045 fps; across all powders the maximum-charge window runs from 1,778 fps to 3,045 fps. Accurate 3100 gives the best case fill at 100 %, and 94 of the 94 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (420 MPa), the top charges use 50–90 %, leaving at least 10 % headroom. The 180.0 gr projectile in 0.308" calls for a 1:9.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, ADI AR 2213, ADI AR 2217 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, Norma MRP, ReloadSwiss RS 70 rank at the top here: for .300 Blaser Mag. with the .308 | 180gr | SUS-TAC HPT they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, ADI AR 2217, Baschieri & Pellagri 109, Bofors RP30 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.