Load Specifications
Load data in caliber .300 Blaser Mag. with .308 | 180gr | Nosler AccuBond bullet and 85 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Norma MRP, Vihtavuori N560 and Alliant Reloder-26.
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% | 54,404 psi | 89% | 2828 fps | 99.1% |
| Accurate 3100 | <<locked>> | 98% | 52,750 psi | 87% | 2881 fps | 99.8% |
| Accurate 4064 | <<locked>> | 82% | 54,027 psi | 89% | 2812 fps | 100% |
| Accurate 4350 | <<locked>> | 90% | 54,766 psi | 90% | 2927 fps | 100% |
| Accurate High Country | <<locked>> | 96% | 53,809 psi | 88% | 3025 fps | 98% |
| Accurate MAGPRO | <<locked>> | 98% | 54,723 psi | 90% | 3022 fps | 96.9% |
| ADI AR 2208 | <<locked>> | 84% | 53,940 psi | 89% | 2844 fps | 100% |
| ADI AR 2209 | <<locked>> | 94% | 52,040 psi | 85% | 2913 fps | 98.3% |
| ADI AR 2213 | <<locked>> | 98% | 53,301 psi | 88% | 2969 fps | 97.5% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 36,651 psi | 60% | 2680 fps | 96.2% |
| Alliant Power Pro Varmint | <<locked>> | 94% | 52,156 psi | 86% | 2913 fps | 98.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 54,766 psi | 90% | 2867 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 54,839 psi | 90% | 2890 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 90% | 51,924 psi | 85% | 2927 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 86% | 53,098 psi | 87% | 2949 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 96% | 55,013 psi | 90% | 2959 fps | 98.8% |
| Alliant Reloder-22 | <<locked>> | 98% | 52,460 psi | 86% | 2966 fps | 98.6% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 53,156 psi | 87% | 2949 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 46,079 psi | 76% | 2884 fps | 99.8% |
| Alliant Reloder-26 | <<locked>> | 96% | 53,127 psi | 87% | 3035 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 51,445 psi | 84% | 2946 fps | 98.4% |
| Bofors RP3 | <<locked>> | 82% | 52,098 psi | 86% | 2831 fps | 100% |
| Bofors RP5 | <<locked>> | 98% | 52,460 psi | 86% | 2966 fps | 98.6% |
| Bofors RP7 | <<locked>> | 88% | 54,882 psi | 90% | 2874 fps | 99.3% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 45,629 psi | 75% | 2818 fps | 96.5% |
| Hodgdon H380 | <<locked>> | 82% | 52,228 psi | 86% | 2848 fps | 100% |
| Hodgdon H414 | <<locked>> | 88% | 53,171 psi | 87% | 2923 fps | 99.5% |
| Hodgdon H4350 | <<locked>> | 86% | 52,939 psi | 87% | 2881 fps | 98.7% |
| Hodgdon H4831 | <<locked>> | 96% | 53,287 psi | 87% | 2907 fps | 96.8% |
| Hodgdon H4831 SC | <<locked>> | 96% | 52,359 psi | 86% | 2894 fps | 96.7% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 52,475 psi | 86% | 2854 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 45,092 psi | 74% | 2923 fps | 98% |
| Hodgdon Superformance | <<locked>> | 88% | 53,243 psi | 87% | 2959 fps | 99.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,492 psi | 60% | 1798 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 53,287 psi | 87% | 2825 fps | 100% |
| IMR 4350 | <<locked>> | 90% | 52,460 psi | 86% | 2854 fps | 99.1% |
| IMR 4451 Enduron | <<locked>> | 86% | 52,982 psi | 87% | 2848 fps | 99.4% |
| IMR 4831 | <<locked>> | 92% | 55,027 psi | 90% | 2913 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 54,998 psi | 90% | 2900 fps | 97.3% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 54,346 psi | 89% | 3002 fps | 97.8% |
| Lovex S062 | <<locked>> | 82% | 53,490 psi | 88% | 2818 fps | 100% |
| Lovex S065 | <<locked>> | 88% | 53,374 psi | 88% | 2848 fps | 99.9% |
| Lovex S070 | <<locked>> | 90% | 54,650 psi | 90% | 2890 fps | 99.7% |
| Lovex S071ᴾ | <<locked>> | 100% | 46,905 psi | 77% | 2785 fps | 99.3% |
| Norma 203B | <<locked>> | 82% | 54,172 psi | 89% | 2874 fps | 100% |
| Norma 204 | <<locked>> | 90% | 53,098 psi | 87% | 2907 fps | 98.4% |
| Norma MRP | <<locked>> | 96% | 51,895 psi | 85% | 2989 fps | 99.5% |
| Norma URP | <<locked>> | 90% | 53,505 psi | 88% | 2910 fps | 100% |
| Ramshot Big Game | <<locked>> | 82% | 54,853 psi | 90% | 2900 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 54,897 psi | 90% | 3018 fps | 98.2% |
| Ramshot Hunter | <<locked>> | 90% | 52,214 psi | 86% | 2910 fps | 99.8% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 48,936 psi | 80% | 2890 fps | 98.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,231 psi | 61% | 1841 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 52,257 psi | 86% | 2835 fps | 99.6% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 52,489 psi | 86% | 2940 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 54,549 psi | 90% | 2949 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 52,953 psi | 87% | 2976 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 45,136 psi | 74% | 2920 fps | 98.9% |
| Rottweil R 903 | <<locked>> | 84% | 52,199 psi | 86% | 2828 fps | 100% |
| Rottweil R 904 | <<locked>> | 94% | 53,751 psi | 88% | 2887 fps | 97.6% |
| Rottweil R 905 | <<locked>> | 96% | 54,172 psi | 89% | 2946 fps | 98.8% |
| Rottweil R 907 | <<locked>> | 88% | 54,882 psi | 90% | 2874 fps | 99.3% |
| Shooters World Long Rifle | <<locked>> | 88% | 53,374 psi | 88% | 2848 fps | 99.9% |
| Shooters World Precision | <<locked>> | 82% | 53,490 psi | 88% | 2818 fps | 100% |
| Shooters World SW4350 | <<locked>> | 90% | 54,650 psi | 90% | 2890 fps | 99.7% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 53,751 psi | 88% | 2890 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 53,113 psi | 87% | 2713 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 52,663 psi | 86% | 2795 fps | 99.4% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 53,708 psi | 88% | 2940 fps | 98.7% |
| Somchem S355 | <<locked>> | 84% | 52,156 psi | 86% | 2825 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 51,880 psi | 85% | 2822 fps | 96.5% |
| Somchem S365 | <<locked>> | 92% | 52,837 psi | 87% | 2910 fps | 100% |
| Somchem S385 | <<locked>> | 96% | 54,984 psi | 90% | 2923 fps | 99.4% |
| Vihtavuori N150 | <<locked>> | 86% | 53,345 psi | 88% | 2799 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 51,982 psi | 85% | 2851 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 54,273 psi | 89% | 2897 fps | 99.1% |
| Vihtavuori N540 | <<locked>> | 82% | 54,099 psi | 89% | 2799 fps | 100% |
| Vihtavuori N550 | <<locked>> | 90% | 54,694 psi | 90% | 2910 fps | 100% |
| Vihtavuori N555 | <<locked>> | 96% | 52,170 psi | 86% | 2923 fps | 100% |
| Vihtavuori N560 | <<locked>> | 96% | 52,199 psi | 86% | 2979 fps | 97% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 47,819 psi | 79% | 2887 fps | 96.3% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 54,940 psi | 90% | 2864 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 53,417 psi | 88% | 2927 fps | 99.5% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 48,399 psi | 79% | 3015 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 55,100 psi | 90% | 2917 fps | 98.7% |
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% | 50,894 psi | 84% | 2772 fps | 98.7% |
| Accurate 3100 | <<locked>> | 82% | 30,661 psi | 50% | 2438 fps | 95% |
| Accurate 4064 | <<locked>> | 80% | 50,676 psi | 83% | 2766 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 38,914 psi | 64% | 2644 fps | 99.1% |
| Accurate High Country | <<locked>> | 90% | 43,613 psi | 72% | 2835 fps | 95.6% |
| Accurate MAGPRO | <<locked>> | 94% | 47,427 psi | 78% | 2894 fps | 95.2% |
| ADI AR 2208 | <<locked>> | 80% | 47,688 psi | 78% | 2743 fps | 100% |
| ADI AR 2209 | <<locked>> | 86% | 40,234 psi | 66% | 2687 fps | 95.5% |
| ADI AR 2213 | <<locked>> | 94% | 46,673 psi | 77% | 2848 fps | 95.9% |
| ADI AR 2225 | <<locked>> | 98% | 34,432 psi | 57% | 2618 fps | 95.1% |
| Alliant Power Pro Varmint | <<locked>> | 86% | 40,205 psi | 66% | 2684 fps | 95.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 48,182 psi | 79% | 2766 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 51,445 psi | 84% | 2838 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 37,652 psi | 62% | 2654 fps | 99.2% |
| Alliant Reloder-17 | <<locked>> | 80% | 42,801 psi | 70% | 2776 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 86% | 39,856 psi | 65% | 2677 fps | 95.5% |
| Alliant Reloder-22 | <<locked>> | 90% | 40,103 psi | 66% | 2730 fps | 95.8% |
| Alliant Reloder-23 | <<locked>> | 80% | 27,746 psi | 46% | 2415 fps | 97.5% |
| Alliant Reloder-25 | <<locked>> | 88% | 31,386 psi | 52% | 2533 fps | 95.9% |
| Alliant Reloder-26 | 64.4 gr | 80% | 29,646 psi | 49% | 2526 fps | 96% |
| Bofors RP15 | <<locked>> | 92% | 39,711 psi | 65% | 2720 fps | 95.5% |
| Bofors RP3 | <<locked>> | 80% | 48,805 psi | 80% | 2782 fps | 100% |
| Bofors RP5 | <<locked>> | 90% | 40,103 psi | 66% | 2730 fps | 95.8% |
| Bofors RP7 | <<locked>> | 80% | 42,699 psi | 70% | 2657 fps | 97.3% |
| Hodgdon H1000 | <<locked>> | 98% | 42,656 psi | 70% | 2756 fps | 95.6% |
| Hodgdon H380 | <<locked>> | 80% | 48,965 psi | 80% | 2795 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 80% | 40,814 psi | 67% | 2694 fps | 97.5% |
| Hodgdon H4350 | <<locked>> | 80% | 43,714 psi | 72% | 2713 fps | 96.9% |
| Hodgdon H4831 | <<locked>> | 92% | 46,659 psi | 77% | 2792 fps | 95.3% |
| Hodgdon H4831 SC | <<locked>> | 92% | 45,658 psi | 75% | 2772 fps | 95% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 35,375 psi | 58% | 2549 fps | 99.5% |
| Hodgdon Retumbo | <<locked>> | 94% | 37,188 psi | 61% | 2730 fps | 95% |
| Hodgdon Superformance | <<locked>> | 80% | 39,668 psi | 65% | 2703 fps | 96.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,354 psi | 45% | 1608 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 50,154 psi | 82% | 2776 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 38,363 psi | 63% | 2585 fps | 96.1% |
| IMR 4451 Enduron | <<locked>> | 80% | 44,121 psi | 72% | 2687 fps | 98% |
| IMR 4831 | <<locked>> | 80% | 37,304 psi | 61% | 2595 fps | 98.9% |
| IMR 4955 Enduron | <<locked>> | 90% | 45,527 psi | 75% | 2733 fps | 95.2% |
| IMR 7828 SSC | <<locked>> | 94% | 44,527 psi | 73% | 2818 fps | 95.4% |
| Lovex S062 | <<locked>> | 80% | 50,386 psi | 83% | 2772 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 41,655 psi | 68% | 2638 fps | 98.7% |
| Lovex S070 | <<locked>> | 80% | 39,972 psi | 66% | 2621 fps | 97.4% |
| Lovex S071 | <<locked>> | 88% | 31,923 psi | 52% | 2470 fps | 95.6% |
| Norma 203B | <<locked>> | 80% | 50,792 psi | 83% | 2822 fps | 100% |
| Norma 204 | <<locked>> | 82% | 40,466 psi | 66% | 2671 fps | 95.4% |
| Norma MRP | 65.6 gr | 84% | 34,229 psi | 56% | 2618 fps | 95.1% |
| Norma URP | <<locked>> | 80% | 38,653 psi | 63% | 2641 fps | 99% |
| Ramshot Big Game | <<locked>> | 80% | 51,271 psi | 84% | 2848 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 44,208 psi | 73% | 2822 fps | 95.7% |
| Ramshot Hunter | <<locked>> | 80% | 37,478 psi | 62% | 2628 fps | 97.4% |
| Ramshot Magnum | <<locked>> | 92% | 36,695 psi | 60% | 2638 fps | 95.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,905 psi | 46% | 1647 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 48,878 psi | 80% | 2776 fps | 99.3% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 45,469 psi | 75% | 2828 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 38,682 psi | 64% | 2664 fps | 98.9% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 37,347 psi | 61% | 2671 fps | 98.4% |
| ReloadSwiss RS 76 | <<locked>> | 94% | 36,622 psi | 60% | 2713 fps | 96.1% |
| Rottweil R 903 | <<locked>> | 80% | 45,992 psi | 76% | 2730 fps | 100% |
| Rottweil R 904 | <<locked>> | 88% | 44,454 psi | 73% | 2720 fps | 95.5% |
| Rottweil R 905 | <<locked>> | 86% | 38,943 psi | 64% | 2661 fps | 95.4% |
| Rottweil R 907 | <<locked>> | 80% | 42,699 psi | 70% | 2657 fps | 97.3% |
| Shooters World Long Rifle | <<locked>> | 80% | 41,655 psi | 68% | 2638 fps | 98.7% |
| Shooters World Precision | <<locked>> | 80% | 50,386 psi | 83% | 2772 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 39,972 psi | 66% | 2621 fps | 97.4% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 47,094 psi | 77% | 2785 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 47,021 psi | 77% | 2625 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 40,712 psi | 67% | 2582 fps | 97.4% |
| SNPE Vectan Tubal 8000 | <<locked>> | 86% | 38,580 psi | 63% | 2654 fps | 95.2% |
| Somchem S355 | <<locked>> | 80% | 46,050 psi | 76% | 2726 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 48,544 psi | 80% | 2766 fps | 95.7% |
| Somchem S365 | <<locked>> | 80% | 35,114 psi | 58% | 2595 fps | 100% |
| Somchem S385 | <<locked>> | 84% | 37,144 psi | 61% | 2589 fps | 95.7% |
| Vihtavuori N150 | <<locked>> | 80% | 44,106 psi | 72% | 2654 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 39,972 psi | 66% | 2638 fps | 99.2% |
| Vihtavuori N165 | <<locked>> | 88% | 36,506 psi | 60% | 2569 fps | 95% |
| Vihtavuori N540 | <<locked>> | 80% | 50,850 psi | 83% | 2753 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 39,421 psi | 65% | 2638 fps | 99% |
| Vihtavuori N555 | <<locked>> | 80% | 30,676 psi | 50% | 2487 fps | 97.5% |
| Vihtavuori N560 | 71.9 gr | 92% | 45,629 psi | 75% | 2854 fps | 95.3% |
| Vihtavuori N565 | <<locked>> | 98% | 44,744 psi | 73% | 2828 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 39,088 psi | 64% | 2605 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 40,814 psi | 67% | 2694 fps | 97.5% |
| Winchester StaBALL HD | <<locked>> | 80% | 24,569 psi | 40% | 2392 fps | 96.6% |
| Winchester Supreme 780 | <<locked>> | 88% | 38,870 psi | 64% | 2625 fps | 95.1% |
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 85 powders for .300 Blaser Mag. loaded with the .308 | 180gr | Nosler AccuBond. Alliant Reloder-26 delivers the highest muzzle velocity at 3,035 fps; across all powders the maximum-charge window runs from 1,798 fps to 3,035 fps. ADI AR 2225 gives the best case fill at 100 %, and 85 of the 85 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 180.0 gr projectile in 0.308" calls for a 1:12.0 twist; slower twists will usually not stabilise this weight. ADI AR 2225, Alliant Reloder-23, 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. Norma MRP, Vihtavuori N560, Alliant Reloder-26 rank at the top here: for .300 Blaser Mag. with the .308 | 180gr | Nosler AccuBond 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.