Load Specifications
Load data in caliber .300 Blaser Mag. with .308 | 180gr | Nosler Ballistic Silver Tip 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% | 54,607 psi | 90% | 2831 fps | 99.2% |
| Accurate 3100 | <<locked>> | 98% | 52,953 psi | 87% | 2884 fps | 99.8% |
| Accurate 4064 | <<locked>> | 82% | 54,317 psi | 89% | 2818 fps | 100% |
| Accurate 4350 | <<locked>> | 90% | 54,998 psi | 90% | 2930 fps | 100% |
| Accurate High Country | <<locked>> | 96% | 54,215 psi | 89% | 3031 fps | 98.1% |
| Accurate MAGPRO | <<locked>> | 96% | 51,372 psi | 84% | 2969 fps | 96.2% |
| ADI AR 2208 | <<locked>> | 84% | 54,172 psi | 89% | 2851 fps | 100% |
| ADI AR 2209 | <<locked>> | 94% | 52,475 psi | 86% | 2923 fps | 98.4% |
| ADI AR 2213 | <<locked>> | 98% | 53,447 psi | 88% | 2972 fps | 97.6% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 36,927 psi | 61% | 2690 fps | 96.4% |
| Alliant Power Pro Varmint | <<locked>> | 94% | 52,460 psi | 86% | 2920 fps | 98.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 55,027 psi | 90% | 2874 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 55,085 psi | 90% | 2897 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 90% | 52,373 psi | 86% | 2936 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 86% | 53,359 psi | 88% | 2956 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 94% | 51,779 psi | 85% | 2910 fps | 98.4% |
| Alliant Reloder-22 | <<locked>> | 98% | 52,620 psi | 86% | 2969 fps | 98.7% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 53,330 psi | 88% | 2953 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 46,253 psi | 76% | 2890 fps | 99.8% |
| Alliant Reloder-26 | <<locked>> | 96% | 53,534 psi | 88% | 3041 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 51,590 psi | 85% | 2953 fps | 98.4% |
| Bofors RP3 | <<locked>> | 82% | 52,344 psi | 86% | 2838 fps | 100% |
| Bofors RP5 | <<locked>> | 98% | 52,620 psi | 86% | 2969 fps | 98.7% |
| Bofors RP7 | <<locked>> | 88% | 55,071 psi | 90% | 2881 fps | 99.3% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 45,963 psi | 75% | 2825 fps | 96.7% |
| Hodgdon H380 | <<locked>> | 82% | 52,460 psi | 86% | 2851 fps | 100% |
| Hodgdon H414 | <<locked>> | 88% | 53,606 psi | 88% | 2930 fps | 99.6% |
| Hodgdon H4350 | <<locked>> | 86% | 53,127 psi | 87% | 2887 fps | 98.7% |
| Hodgdon H4831 | <<locked>> | 96% | 53,679 psi | 88% | 2917 fps | 97% |
| Hodgdon H4831 SC | <<locked>> | 96% | 52,533 psi | 86% | 2897 fps | 96.7% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 52,678 psi | 86% | 2858 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 45,411 psi | 75% | 2930 fps | 98.1% |
| Hodgdon Superformance | <<locked>> | 88% | 53,447 psi | 88% | 2963 fps | 99.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,666 psi | 60% | 1801 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 53,490 psi | 88% | 2831 fps | 100% |
| IMR 4350 | <<locked>> | 90% | 52,852 psi | 87% | 2864 fps | 99.2% |
| IMR 4451 Enduron | <<locked>> | 86% | 53,229 psi | 87% | 2851 fps | 99.4% |
| IMR 4831 | <<locked>> | 90% | 52,040 psi | 85% | 2871 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 52,025 psi | 85% | 2854 fps | 96.8% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 54,708 psi | 90% | 3009 fps | 97.9% |
| Lovex S062 | <<locked>> | 82% | 53,751 psi | 88% | 2825 fps | 100% |
| Lovex S065 | <<locked>> | 88% | 53,563 psi | 88% | 2851 fps | 99.9% |
| Lovex S070 | <<locked>> | 90% | 54,839 psi | 90% | 2897 fps | 99.7% |
| Lovex S071ᴾ | <<locked>> | 100% | 47,297 psi | 78% | 2792 fps | 99.4% |
| Norma 203B | <<locked>> | 82% | 54,389 psi | 89% | 2881 fps | 100% |
| Norma 204 | <<locked>> | 90% | 53,243 psi | 87% | 2910 fps | 98.4% |
| Norma MRP | <<locked>> | 96% | 52,330 psi | 86% | 2999 fps | 99.5% |
| Norma URP | <<locked>> | 90% | 53,766 psi | 88% | 2917 fps | 100% |
| Ramshot Big Game | <<locked>> | 82% | 55,100 psi | 90% | 2904 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 51,372 psi | 84% | 2959 fps | 97.6% |
| Ramshot Hunter | <<locked>> | 90% | 52,402 psi | 86% | 2913 fps | 99.8% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 49,313 psi | 81% | 2897 fps | 98.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,188 psi | 61% | 1841 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 52,460 psi | 86% | 2841 fps | 99.6% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 52,750 psi | 87% | 2943 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 54,998 psi | 90% | 2956 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 53,156 psi | 87% | 2982 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 45,382 psi | 75% | 2927 fps | 98.9% |
| Rottweil R 903 | <<locked>> | 84% | 52,446 psi | 86% | 2835 fps | 100% |
| Rottweil R 904 | <<locked>> | 94% | 53,925 psi | 89% | 2890 fps | 97.7% |
| Rottweil R 905 | <<locked>> | 96% | 54,607 psi | 90% | 2953 fps | 98.9% |
| Rottweil R 907 | <<locked>> | 88% | 55,071 psi | 90% | 2881 fps | 99.3% |
| Shooters World Long Rifle | <<locked>> | 88% | 53,563 psi | 88% | 2851 fps | 99.9% |
| Shooters World Precision | <<locked>> | 82% | 53,751 psi | 88% | 2825 fps | 100% |
| Shooters World SW4350 | <<locked>> | 90% | 54,839 psi | 90% | 2897 fps | 99.7% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 53,969 psi | 89% | 2894 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 53,359 psi | 88% | 2720 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 53,055 psi | 87% | 2802 fps | 99.4% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 54,128 psi | 89% | 2949 fps | 98.8% |
| Somchem S355 | <<locked>> | 84% | 52,373 psi | 86% | 2831 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 52,025 psi | 85% | 2828 fps | 96.6% |
| Somchem S365 | <<locked>> | 92% | 53,330 psi | 88% | 2920 fps | 100% |
| Somchem S385 | <<locked>> | 94% | 51,750 psi | 85% | 2874 fps | 99% |
| Vihtavuori N150 | <<locked>> | 86% | 53,563 psi | 88% | 2805 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 52,214 psi | 86% | 2858 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 54,636 psi | 90% | 2904 fps | 99.1% |
| Vihtavuori N540 | <<locked>> | 82% | 54,346 psi | 89% | 2802 fps | 100% |
| Vihtavuori N550 | <<locked>> | 90% | 54,882 psi | 90% | 2917 fps | 100% |
| Vihtavuori N555 | <<locked>> | 96% | 52,373 psi | 86% | 2927 fps | 100% |
| Vihtavuori N560 | <<locked>> | 96% | 52,605 psi | 86% | 2986 fps | 97.1% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 48,196 psi | 79% | 2894 fps | 96.4% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 51,706 psi | 85% | 2822 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 53,606 psi | 88% | 2930 fps | 99.6% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 48,863 psi | 80% | 3025 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 51,590 psi | 85% | 2864 fps | 98.3% |
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% | 51,111 psi | 84% | 2776 fps | 98.7% |
| Accurate 3100 | <<locked>> | 82% | 30,821 psi | 51% | 2441 fps | 95.1% |
| Accurate 4064 | <<locked>> | 80% | 50,981 psi | 84% | 2769 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 39,117 psi | 64% | 2651 fps | 99.2% |
| Accurate High Country | <<locked>> | 90% | 43,990 psi | 72% | 2844 fps | 95.8% |
| Accurate MAGPRO | <<locked>> | 94% | 47,863 psi | 79% | 2904 fps | 95.3% |
| ADI AR 2208 | <<locked>> | 80% | 47,718 psi | 78% | 2746 fps | 100% |
| ADI AR 2209 | <<locked>> | 86% | 40,393 psi | 66% | 2690 fps | 95.6% |
| ADI AR 2213 | <<locked>> | 92% | 43,845 psi | 72% | 2789 fps | 95.1% |
| ADI AR 2225 | <<locked>> | 98% | 34,563 psi | 57% | 2625 fps | 95.2% |
| Alliant Power Pro Varmint | <<locked>> | 86% | 40,451 psi | 66% | 2690 fps | 95.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 48,443 psi | 80% | 2772 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 51,706 psi | 85% | 2841 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 37,840 psi | 62% | 2661 fps | 99.2% |
| Alliant Reloder-17 | <<locked>> | 80% | 43,018 psi | 71% | 2782 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 86% | 40,030 psi | 66% | 2684 fps | 95.6% |
| Alliant Reloder-22 | <<locked>> | 90% | 40,451 psi | 66% | 2740 fps | 95.9% |
| Alliant Reloder-23 | <<locked>> | 80% | 27,920 psi | 46% | 2421 fps | 97.6% |
| Alliant Reloder-25 | <<locked>> | 86% | 29,718 psi | 49% | 2484 fps | 95% |
| Alliant Reloder-26 | 64.7 gr | 80% | 29,820 psi | 49% | 2533 fps | 96.1% |
| Bofors RP15 | <<locked>> | 92% | 39,914 psi | 66% | 2723 fps | 95.6% |
| Bofors RP3 | <<locked>> | 80% | 49,052 psi | 81% | 2789 fps | 100% |
| Bofors RP5 | <<locked>> | 90% | 40,451 psi | 66% | 2740 fps | 95.9% |
| Bofors RP7 | <<locked>> | 80% | 42,931 psi | 70% | 2664 fps | 97.4% |
| Hodgdon H1000 | <<locked>> | 98% | 42,989 psi | 71% | 2766 fps | 95.7% |
| Hodgdon H380 | <<locked>> | 80% | 49,197 psi | 81% | 2799 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 80% | 41,031 psi | 67% | 2700 fps | 97.5% |
| Hodgdon H4350 | <<locked>> | 80% | 43,932 psi | 72% | 2720 fps | 97% |
| Hodgdon H4831 | <<locked>> | 92% | 46,847 psi | 77% | 2795 fps | 95.3% |
| Hodgdon H4831 SC | <<locked>> | 92% | 46,006 psi | 76% | 2782 fps | 95.1% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 35,447 psi | 58% | 2549 fps | 99.6% |
| Hodgdon Retumbo | <<locked>> | 94% | 37,333 psi | 61% | 2733 fps | 95.1% |
| Hodgdon Superformance | <<locked>> | 80% | 39,827 psi | 65% | 2710 fps | 96.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,369 psi | 45% | 1611 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 50,198 psi | 82% | 2779 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 38,580 psi | 63% | 2592 fps | 96.2% |
| IMR 4451 Enduron | <<locked>> | 80% | 44,295 psi | 73% | 2694 fps | 98.1% |
| IMR 4831 | <<locked>> | 80% | 37,492 psi | 62% | 2602 fps | 98.9% |
| IMR 4955 Enduron | <<locked>> | 90% | 45,905 psi | 75% | 2743 fps | 95.3% |
| IMR 7828 SSC | <<locked>> | 94% | 44,672 psi | 73% | 2822 fps | 95.5% |
| Lovex S062 | <<locked>> | 80% | 50,662 psi | 83% | 2779 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 41,843 psi | 69% | 2641 fps | 98.7% |
| Lovex S070 | <<locked>> | 80% | 40,030 psi | 66% | 2625 fps | 97.4% |
| Lovex S071 | <<locked>> | 88% | 32,111 psi | 53% | 2474 fps | 95.7% |
| Norma 203B | <<locked>> | 80% | 51,053 psi | 84% | 2828 fps | 100% |
| Norma 204 | <<locked>> | 82% | 40,654 psi | 67% | 2677 fps | 95.5% |
| Norma MRP | 66 gr | 84% | 34,563 psi | 57% | 2628 fps | 95.3% |
| Norma URP | <<locked>> | 80% | 38,682 psi | 64% | 2644 fps | 99% |
| Ramshot Big Game | <<locked>> | 80% | 51,488 psi | 85% | 2851 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 44,585 psi | 73% | 2835 fps | 95.9% |
| Ramshot Hunter | <<locked>> | 80% | 37,681 psi | 62% | 2635 fps | 97.5% |
| Ramshot Magnum | <<locked>> | 92% | 36,970 psi | 61% | 2644 fps | 95.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,920 psi | 46% | 1647 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 49,095 psi | 81% | 2782 fps | 99.3% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 45,701 psi | 75% | 2831 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 38,899 psi | 64% | 2671 fps | 98.9% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 37,550 psi | 62% | 2677 fps | 98.5% |
| ReloadSwiss RS 76 | <<locked>> | 94% | 36,695 psi | 60% | 2717 fps | 96.1% |
| Rottweil R 903 | <<locked>> | 80% | 46,006 psi | 76% | 2733 fps | 100% |
| Rottweil R 904 | <<locked>> | 88% | 44,628 psi | 73% | 2726 fps | 95.6% |
| Rottweil R 905 | <<locked>> | 86% | 39,131 psi | 64% | 2667 fps | 95.5% |
| Rottweil R 907 | <<locked>> | 80% | 42,931 psi | 70% | 2664 fps | 97.4% |
| Shooters World Long Rifle | <<locked>> | 80% | 41,843 psi | 69% | 2641 fps | 98.7% |
| Shooters World Precision | <<locked>> | 80% | 50,662 psi | 83% | 2779 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 40,030 psi | 66% | 2625 fps | 97.4% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 47,326 psi | 78% | 2789 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 47,065 psi | 77% | 2628 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 40,915 psi | 67% | 2585 fps | 97.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 86% | 38,769 psi | 64% | 2661 fps | 95.3% |
| Somchem S355 | <<locked>> | 80% | 46,311 psi | 76% | 2730 fps | 100% |
| Somchem S361 | <<locked>> | 88% | 45,571 psi | 75% | 2713 fps | 95% |
| Somchem S365 | <<locked>> | 80% | 35,360 psi | 58% | 2605 fps | 100% |
| Somchem S385 | <<locked>> | 84% | 37,318 psi | 61% | 2595 fps | 95.8% |
| Vihtavuori N150 | <<locked>> | 80% | 44,150 psi | 72% | 2654 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 40,161 psi | 66% | 2641 fps | 99.2% |
| Vihtavuori N165 | <<locked>> | 88% | 36,666 psi | 60% | 2572 fps | 95.1% |
| Vihtavuori N540 | <<locked>> | 80% | 51,068 psi | 84% | 2756 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 39,610 psi | 65% | 2644 fps | 99% |
| Vihtavuori N555 | <<locked>> | 80% | 30,908 psi | 51% | 2493 fps | 97.6% |
| Vihtavuori N560 | 72.2 gr | 92% | 45,774 psi | 75% | 2861 fps | 95.4% |
| Vihtavuori N565 | <<locked>> | 98% | 45,092 psi | 74% | 2838 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 39,247 psi | 64% | 2608 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 41,031 psi | 67% | 2700 fps | 97.5% |
| Winchester StaBALL HD | <<locked>> | 80% | 24,700 psi | 41% | 2398 fps | 96.7% |
| Winchester Supreme 780 | <<locked>> | 88% | 39,044 psi | 64% | 2631 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 85 powders for .300 Blaser Mag. loaded with the .308 | 180gr | Nosler Ballistic Silver Tip. Alliant Reloder-26 delivers the highest muzzle velocity at 3,041 fps; across all powders the maximum-charge window runs from 1,801 fps to 3,041 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 Ballistic Silver Tip 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.