Load Specifications
Load data in caliber .300 Blaser Mag. with .3085 | 180gr | Prvi Partizan SP bullet and 76 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 Vihtavuori N560.
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.
A valid access license is required to use the Personalized Load Calculator.
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 3100 | <<locked>> | 96% | 51,605 psi | 85% | 2871 fps | 99.8% |
| Accurate 4350 | <<locked>> | 88% | 53,403 psi | 88% | 2913 fps | 100% |
| Accurate MAGPRO | <<locked>> | 96% | 53,548 psi | 88% | 3015 fps | 96.9% |
| ADI AR 2208 | <<locked>> | 82% | 52,344 psi | 86% | 2835 fps | 100% |
| ADI AR 2209 | <<locked>> | 94% | 54,317 psi | 89% | 2963 fps | 98.9% |
| ADI AR 2213 | <<locked>> | 96% | 51,851 psi | 85% | 2956 fps | 97.5% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 38,247 psi | 63% | 2733 fps | 97.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 53,243 psi | 87% | 2854 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 90% | 54,128 psi | 89% | 2969 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 84% | 51,677 psi | 85% | 2936 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 94% | 53,809 psi | 88% | 2953 fps | 98.8% |
| Alliant Reloder-22 | <<locked>> | 98% | 54,940 psi | 90% | 3015 fps | 99.1% |
| Alliant Reloder-23 | <<locked>> | 98% | 52,112 psi | 86% | 2940 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 48,182 psi | 79% | 2933 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 94% | 51,909 psi | 85% | 3022 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 53,882 psi | 88% | 2995 fps | 98.9% |
| Bofors RP3 | <<locked>> | 82% | 53,954 psi | 89% | 2871 fps | 100% |
| Bofors RP30ᴾ | <<locked>> | 100% | 44,048 psi | 72% | 2854 fps | 96.5% |
| Bofors RP5 | <<locked>> | 98% | 54,940 psi | 90% | 3015 fps | 99.1% |
| Bofors RP7 | <<locked>> | 86% | 53,287 psi | 87% | 2861 fps | 99.3% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 47,732 psi | 78% | 2874 fps | 97.4% |
| Hodgdon H380 | <<locked>> | 82% | 54,157 psi | 89% | 2887 fps | 100% |
| Hodgdon H414 | <<locked>> | 86% | 51,851 psi | 85% | 2910 fps | 99.5% |
| Hodgdon H4350 | <<locked>> | 86% | 54,940 psi | 90% | 2927 fps | 99.1% |
| Hodgdon H4831 | <<locked>> | 94% | 51,938 psi | 85% | 2900 fps | 96.9% |
| Hodgdon H4831 SC | <<locked>> | 96% | 54,476 psi | 89% | 2940 fps | 97.4% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 54,607 psi | 90% | 2894 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 47,108 psi | 77% | 2979 fps | 98.7% |
| Hodgdon Superformance | <<locked>> | 86% | 51,677 psi | 85% | 2943 fps | 99.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,724 psi | 60% | 1814 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 55,100 psi | 90% | 2864 fps | 100% |
| IMR 4350 | <<locked>> | 90% | 54,520 psi | 90% | 2900 fps | 99.4% |
| IMR 4451 Enduron | <<locked>> | 86% | 54,694 psi | 90% | 2887 fps | 99.6% |
| IMR 4831 | <<locked>> | 90% | 53,867 psi | 88% | 2907 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 53,664 psi | 88% | 2890 fps | 97.4% |
| IMR 7828 SSC | <<locked>> | 98% | 53,098 psi | 87% | 2992 fps | 97.9% |
| Lovex S065 | <<locked>> | 88% | 55,114 psi | 90% | 2887 fps | 100% |
| Lovex S070 | <<locked>> | 88% | 53,040 psi | 87% | 2877 fps | 99.6% |
| Lovex S071ᴾ | <<locked>> | 100% | 49,153 psi | 81% | 2831 fps | 99.6% |
| Norma 204 | <<locked>> | 88% | 51,532 psi | 85% | 2894 fps | 98.3% |
| Norma MRP | <<locked>> | 96% | 54,737 psi | 90% | 3041 fps | 99.8% |
| Norma URP | <<locked>> | 88% | 52,025 psi | 85% | 2897 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 53,519 psi | 88% | 3012 fps | 98.3% |
| Ramshot Hunter | <<locked>> | 90% | 54,331 psi | 89% | 2953 fps | 99.9% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 51,503 psi | 85% | 2943 fps | 99.2% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,449 psi | 61% | 1860 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 53,998 psi | 89% | 2874 fps | 99.8% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 54,853 psi | 90% | 2979 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 53,359 psi | 88% | 2940 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 51,677 psi | 85% | 2966 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 47,297 psi | 78% | 2976 fps | 99.4% |
| Rottweil R 903 | <<locked>> | 84% | 54,244 psi | 89% | 2867 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 52,402 psi | 86% | 2877 fps | 97.6% |
| Rottweil R 905 | <<locked>> | 94% | 53,011 psi | 87% | 2936 fps | 98.8% |
| Rottweil R 907 | <<locked>> | 86% | 53,287 psi | 87% | 2861 fps | 99.3% |
| Shooters World Long Rifle | <<locked>> | 88% | 55,114 psi | 90% | 2887 fps | 100% |
| Shooters World SW4350 | <<locked>> | 88% | 53,040 psi | 87% | 2877 fps | 99.6% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 52,112 psi | 86% | 2874 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 54,665 psi | 90% | 2746 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 54,491 psi | 89% | 2835 fps | 99.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 52,562 psi | 86% | 2933 fps | 98.8% |
| Somchem S355 | <<locked>> | 84% | 54,157 psi | 89% | 2864 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 53,940 psi | 89% | 2871 fps | 97.2% |
| Somchem S365 | <<locked>> | 90% | 51,880 psi | 85% | 2904 fps | 100% |
| Somchem S385 | <<locked>> | 94% | 53,548 psi | 88% | 2910 fps | 99.3% |
| Vihtavuori N150 | <<locked>> | 84% | 51,895 psi | 85% | 2789 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 54,056 psi | 89% | 2890 fps | 100% |
| Vihtavuori N165 | <<locked>> | 98% | 53,084 psi | 87% | 2887 fps | 99.1% |
| Vihtavuori N550 | <<locked>> | 88% | 53,258 psi | 87% | 2897 fps | 100% |
| Vihtavuori N555 | <<locked>> | 96% | 54,708 psi | 90% | 2966 fps | 100% |
| Vihtavuori N560 | <<locked>> | 96% | 54,795 psi | 90% | 3035 fps | 97.8% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 50,299 psi | 83% | 2940 fps | 97.1% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 53,490 psi | 88% | 2854 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 52,083 psi | 86% | 2917 fps | 99.5% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 51,982 psi | 85% | 3071 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 53,563 psi | 88% | 2904 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 3100 | <<locked>> | 80% | 30,023 psi | 49% | 2425 fps | 95% |
| Accurate 4350 | <<locked>> | 80% | 40,669 psi | 67% | 2690 fps | 99.5% |
| Accurate MAGPRO | <<locked>> | 92% | 46,470 psi | 76% | 2884 fps | 95.2% |
| ADI AR 2208 | <<locked>> | 80% | 49,226 psi | 81% | 2782 fps | 100% |
| ADI AR 2209 | <<locked>> | 84% | 39,015 psi | 64% | 2667 fps | 95.3% |
| ADI AR 2213 | <<locked>> | 92% | 45,426 psi | 75% | 2835 fps | 95.9% |
| ADI AR 2225 | <<locked>> | 96% | 33,750 psi | 55% | 2612 fps | 95.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 50,024 psi | 82% | 2805 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 39,262 psi | 64% | 2697 fps | 99.5% |
| Alliant Reloder-17 | <<locked>> | 80% | 44,730 psi | 73% | 2822 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 84% | 38,928 psi | 64% | 2667 fps | 95.4% |
| Alliant Reloder-22 | <<locked>> | 88% | 39,204 psi | 64% | 2717 fps | 95.7% |
| Alliant Reloder-23 | <<locked>> | 80% | 28,906 psi | 47% | 2454 fps | 98.2% |
| Alliant Reloder-25 | <<locked>> | 86% | 30,792 psi | 51% | 2526 fps | 95.9% |
| Alliant Reloder-26 | 66.8 gr | 80% | 31,024 psi | 51% | 2572 fps | 96.9% |
| Bofors RP15 | <<locked>> | 90% | 38,870 psi | 64% | 2707 fps | 95.4% |
| Bofors RP3 | <<locked>> | 80% | 50,676 psi | 83% | 2822 fps | 100% |
| Bofors RP30 | <<locked>> | 98% | 41,307 psi | 68% | 2795 fps | 95.6% |
| Bofors RP5 | <<locked>> | 88% | 39,204 psi | 64% | 2717 fps | 95.7% |
| Bofors RP7 | <<locked>> | 80% | 44,135 psi | 72% | 2697 fps | 97.9% |
| Hodgdon H1000 | <<locked>> | 96% | 41,568 psi | 68% | 2746 fps | 95.6% |
| Hodgdon H380 | <<locked>> | 80% | 50,676 psi | 83% | 2831 fps | 100% |
| Hodgdon H414 | <<locked>> | 80% | 42,438 psi | 70% | 2736 fps | 98.1% |
| Hodgdon H4350 | <<locked>> | 80% | 45,324 psi | 74% | 2756 fps | 97.5% |
| Hodgdon H4831 | <<locked>> | 90% | 45,498 psi | 75% | 2782 fps | 95.2% |
| Hodgdon H4831 SC | <<locked>> | 92% | 47,674 psi | 78% | 2822 fps | 95.8% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 36,738 psi | 60% | 2585 fps | 99.8% |
| Hodgdon Retumbo | <<locked>> | 92% | 36,405 psi | 60% | 2720 fps | 95% |
| Hodgdon Superformance | <<locked>> | 80% | 41,336 psi | 68% | 2749 fps | 97.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,543 psi | 45% | 1624 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 51,779 psi | 85% | 2812 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 39,653 psi | 65% | 2625 fps | 96.8% |
| IMR 4451 Enduron | <<locked>> | 80% | 45,484 psi | 75% | 2723 fps | 98.5% |
| IMR 4831 | <<locked>> | 80% | 38,943 psi | 64% | 2638 fps | 99.3% |
| IMR 4955 Enduron | <<locked>> | 88% | 44,353 psi | 73% | 2723 fps | 95.1% |
| IMR 7828 SSC | <<locked>> | 92% | 43,410 psi | 71% | 2805 fps | 95.4% |
| Lovex S065 | <<locked>> | 80% | 43,062 psi | 71% | 2674 fps | 99% |
| Lovex S070 | <<locked>> | 80% | 41,365 psi | 68% | 2661 fps | 97.9% |
| Lovex S071 | <<locked>> | 86% | 31,401 psi | 52% | 2461 fps | 95.6% |
| Norma 204 | <<locked>> | 80% | 39,320 psi | 65% | 2654 fps | 95.3% |
| Norma MRP | 66.5 gr | 82% | 33,504 psi | 55% | 2605 fps | 95% |
| Norma URP | <<locked>> | 80% | 40,176 psi | 66% | 2680 fps | 99.3% |
| Ramshot Grand | <<locked>> | 92% | 43,207 psi | 71% | 2815 fps | 95.7% |
| Ramshot Hunter | <<locked>> | 80% | 38,986 psi | 64% | 2671 fps | 98% |
| Ramshot Magnum | <<locked>> | 90% | 35,795 psi | 59% | 2625 fps | 95.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,079 psi | 46% | 1663 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 50,662 psi | 83% | 2818 fps | 99.6% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 47,471 psi | 78% | 2867 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 40,321 psi | 66% | 2707 fps | 99.3% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 38,899 psi | 64% | 2717 fps | 98.9% |
| ReloadSwiss RS 76 | <<locked>> | 92% | 35,650 psi | 59% | 2700 fps | 96% |
| Rottweil R 903 | <<locked>> | 80% | 47,616 psi | 78% | 2766 fps | 100% |
| Rottweil R 904 | <<locked>> | 86% | 43,250 psi | 71% | 2707 fps | 95.4% |
| Rottweil R 905 | <<locked>> | 84% | 38,072 psi | 63% | 2648 fps | 95.3% |
| Rottweil R 907 | <<locked>> | 80% | 44,135 psi | 72% | 2697 fps | 97.9% |
| Shooters World Long Rifle | <<locked>> | 80% | 43,062 psi | 71% | 2674 fps | 99% |
| Shooters World SW4350 | <<locked>> | 80% | 41,365 psi | 68% | 2661 fps | 97.9% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 48,791 psi | 80% | 2822 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 48,399 psi | 79% | 2657 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 42,163 psi | 69% | 2621 fps | 98% |
| SNPE Vectan Tubal 8000 | <<locked>> | 84% | 37,724 psi | 62% | 2644 fps | 95.2% |
| Somchem S355 | <<locked>> | 80% | 47,688 psi | 78% | 2762 fps | 100% |
| Somchem S361 | <<locked>> | 88% | 47,282 psi | 78% | 2756 fps | 95.7% |
| Somchem S365 | <<locked>> | 80% | 36,680 psi | 60% | 2638 fps | 100% |
| Somchem S385 | <<locked>> | 82% | 36,201 psi | 59% | 2575 fps | 95.6% |
| Vihtavuori N150 | <<locked>> | 80% | 45,585 psi | 75% | 2687 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 41,626 psi | 68% | 2677 fps | 99.5% |
| Vihtavuori N165 | <<locked>> | 86% | 35,607 psi | 58% | 2556 fps | 95% |
| Vihtavuori N550 | <<locked>> | 80% | 40,959 psi | 67% | 2680 fps | 99.3% |
| Vihtavuori N555 | <<locked>> | 80% | 32,285 psi | 53% | 2536 fps | 98.2% |
| Vihtavuori N560 | 73 gr | 90% | 44,527 psi | 73% | 2844 fps | 95.3% |
| Vihtavuori N565 | <<locked>> | 96% | 43,845 psi | 72% | 2818 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 40,553 psi | 67% | 2641 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 42,612 psi | 70% | 2740 fps | 98.1% |
| Winchester StaBALL HD | <<locked>> | 80% | 25,599 psi | 42% | 2441 fps | 97.7% |
| Winchester Supreme 780 | <<locked>> | 86% | 37,942 psi | 62% | 2615 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 82 powders for .300 Blaser Mag. loaded with the .3085 | 180gr | Prvi Partizan SP. Winchester StaBALL HD delivers the highest muzzle velocity at 3,071 fps; across all powders the maximum-charge window runs from 1,814 fps to 3,071 fps. ADI AR 2217 gives the best case fill at 100 %, and 82 of the 82 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (420 MPa), the top charges use 55–90 %, leaving at least 10 % headroom. The 180.0 gr projectile in 0.3085" calls for a 1:14.0 twist; slower twists will usually not stabilise this weight. ADI AR 2217, ADI AR 2225, 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. Alliant Reloder-26, Norma MRP, Vihtavuori N560 rank at the top here: for .300 Blaser Mag. with the .3085 | 180gr | Prvi Partizan SP they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Baschieri & Pellagri 109, IMR 8133 Enduron, Norma 217 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.