Load Specifications
Load data in caliber .300 Blaser Mag. with .3085 | 168gr | Prvi Partizan HP BT bullet and 86 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 2700 | <<locked>> | 82% | 53,200 psi | 87% | 2904 fps | 98.6% |
| Accurate 3100ᴾ | <<locked>> | 100% | 54,853 psi | 90% | 3005 fps | 99.8% |
| Accurate 4064 | <<locked>> | 82% | 52,736 psi | 87% | 2897 fps | 100% |
| Accurate 4350 | <<locked>> | 90% | 53,229 psi | 87% | 3002 fps | 100% |
| Accurate MAGPRO | <<locked>> | 98% | 53,113 psi | 87% | 3091 fps | 95.9% |
| ADI AR 2208 | <<locked>> | 84% | 52,707 psi | 87% | 2927 fps | 100% |
| ADI AR 2209 | <<locked>> | 96% | 54,143 psi | 89% | 3048 fps | 98.2% |
| ADI AR 2213 | <<locked>> | 98% | 51,953 psi | 85% | 3035 fps | 96.6% |
| Alliant Power Pro Varmint | <<locked>> | 96% | 54,259 psi | 89% | 3041 fps | 98.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 53,359 psi | 88% | 2949 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 53,708 psi | 88% | 2976 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 92% | 53,983 psi | 89% | 3061 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 86% | 51,561 psi | 85% | 3028 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 96% | 53,534 psi | 88% | 3035 fps | 98.2% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 54,636 psi | 90% | 3100 fps | 98.5% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 51,416 psi | 84% | 3022 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 44,802 psi | 74% | 2949 fps | 99.4% |
| Alliant Reloder-26 | <<locked>> | 96% | 51,445 psi | 84% | 3110 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 49,980 psi | 82% | 3018 fps | 97.6% |
| Bofors RP3 | <<locked>> | 84% | 54,259 psi | 89% | 2969 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 54,636 psi | 90% | 3100 fps | 98.5% |
| Bofors RP7 | <<locked>> | 88% | 53,621 psi | 88% | 2949 fps | 98.8% |
| Hodgdon H380 | <<locked>> | 84% | 54,549 psi | 90% | 2986 fps | 100% |
| Hodgdon H414 | <<locked>> | 88% | 51,793 psi | 85% | 2995 fps | 99% |
| Hodgdon H4350 | <<locked>> | 86% | 51,822 psi | 85% | 2959 fps | 98.1% |
| Hodgdon H4831 | <<locked>> | 96% | 52,025 psi | 85% | 2979 fps | 95.9% |
| Hodgdon H4831 SC | <<locked>> | 98% | 54,534 psi | 90% | 3022 fps | 96.5% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 54,259 psi | 89% | 2979 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 43,772 psi | 72% | 2979 fps | 96.8% |
| Hodgdon Superformance | <<locked>> | 88% | 51,605 psi | 85% | 3028 fps | 98.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,521 psi | 60% | 1870 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 52,156 psi | 86% | 2910 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 82% | 54,607 psi | 90% | 2946 fps | 99.3% |
| IMR 4350 | <<locked>> | 92% | 54,708 psi | 90% | 2986 fps | 99% |
| IMR 4451 Enduron | <<locked>> | 86% | 51,895 psi | 85% | 2923 fps | 98.9% |
| IMR 4831 | <<locked>> | 92% | 53,766 psi | 88% | 2995 fps | 100% |
| IMR 4895 | <<locked>> | 82% | 55,114 psi | 90% | 3002 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 53,664 psi | 88% | 2969 fps | 96.5% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 53,084 psi | 87% | 3071 fps | 97% |
| Lovex S062 | <<locked>> | 82% | 52,301 psi | 86% | 2904 fps | 100% |
| Lovex S065 | <<locked>> | 88% | 52,112 psi | 86% | 2923 fps | 99.7% |
| Lovex S070 | <<locked>> | 90% | 53,403 psi | 88% | 2969 fps | 99.3% |
| Lovex S071ᴾ | <<locked>> | 100% | 45,498 psi | 75% | 2851 fps | 98.8% |
| Norma 203B | <<locked>> | 82% | 53,011 psi | 87% | 2959 fps | 100% |
| Norma 204 | <<locked>> | 90% | 51,822 psi | 85% | 2979 fps | 97.6% |
| Norma MRP | <<locked>> | 98% | 54,244 psi | 89% | 3127 fps | 99.4% |
| Norma URP | <<locked>> | 90% | 52,156 psi | 86% | 2989 fps | 100% |
| Ramshot Big Game | <<locked>> | 82% | 53,635 psi | 88% | 2986 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 53,359 psi | 88% | 3084 fps | 97.4% |
| Ramshot Hunter | <<locked>> | 92% | 54,462 psi | 89% | 3045 fps | 99.7% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 47,674 psi | 78% | 2956 fps | 97.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,202 psi | 61% | 1916 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 54,491 psi | 89% | 2966 fps | 99.6% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 54,810 psi | 90% | 3077 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 53,055 psi | 87% | 3025 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 51,474 psi | 85% | 3051 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 43,918 psi | 72% | 2976 fps | 98% |
| Rottweil R 902 | <<locked>> | 82% | 54,288 psi | 89% | 2917 fps | 100% |
| Rottweil R 903 | <<locked>> | 86% | 54,331 psi | 89% | 2963 fps | 100% |
| Rottweil R 904 | <<locked>> | 94% | 52,504 psi | 86% | 2959 fps | 96.8% |
| Rottweil R 905 | <<locked>> | 96% | 52,910 psi | 87% | 3022 fps | 98.2% |
| Rottweil R 907 | <<locked>> | 88% | 53,621 psi | 88% | 2949 fps | 98.8% |
| Shooters World Long Rifle | <<locked>> | 88% | 52,112 psi | 86% | 2923 fps | 99.7% |
| Shooters World Precision | <<locked>> | 82% | 52,301 psi | 86% | 2904 fps | 100% |
| Shooters World SW4350 | <<locked>> | 90% | 53,403 psi | 88% | 2969 fps | 99.3% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 52,330 psi | 86% | 2969 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 52,025 psi | 85% | 2799 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 51,561 psi | 85% | 2871 fps | 98.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 52,446 psi | 86% | 3015 fps | 98.1% |
| Somchem S355 | <<locked>> | 86% | 54,302 psi | 89% | 2959 fps | 100% |
| Somchem S361 | <<locked>> | 94% | 54,070 psi | 89% | 2949 fps | 96.3% |
| Somchem S365 | <<locked>> | 94% | 54,955 psi | 90% | 3045 fps | 100% |
| Somchem S385 | <<locked>> | 96% | 53,447 psi | 88% | 2995 fps | 98.9% |
| Vihtavuori N135 | <<locked>> | 82% | 54,578 psi | 90% | 2871 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 54,911 psi | 90% | 2890 fps | 100% |
| Vihtavuori N150 | <<locked>> | 86% | 52,141 psi | 86% | 2881 fps | 100% |
| Vihtavuori N160 | <<locked>> | 90% | 54,056 psi | 89% | 2982 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 52,750 psi | 87% | 2969 fps | 98.5% |
| Vihtavuori N540 | <<locked>> | 82% | 52,997 psi | 87% | 2884 fps | 100% |
| Vihtavuori N550 | <<locked>> | 90% | 53,200 psi | 87% | 2986 fps | 100% |
| Vihtavuori N555 | <<locked>> | 98% | 54,012 psi | 89% | 3051 fps | 100% |
| Vihtavuori N560 | <<locked>> | 98% | 54,534 psi | 90% | 3114 fps | 96.9% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 53,693 psi | 88% | 2946 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 51,982 psi | 85% | 2999 fps | 99.1% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 46,572 psi | 76% | 3091 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 53,577 psi | 88% | 2989 fps | 98.1% |
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% | 49,821 psi | 82% | 2848 fps | 98.1% |
| Accurate 3100 | <<locked>> | 86% | 33,997 psi | 56% | 2605 fps | 95.7% |
| Accurate 4064 | <<locked>> | 80% | 49,487 psi | 81% | 2848 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 37,753 psi | 62% | 2710 fps | 98.5% |
| Accurate MAGPRO | <<locked>> | 96% | 49,530 psi | 81% | 3028 fps | 95% |
| ADI AR 2208 | <<locked>> | 80% | 46,543 psi | 76% | 2822 fps | 99.9% |
| ADI AR 2209 | <<locked>> | 88% | 41,756 psi | 69% | 2805 fps | 95.2% |
| ADI AR 2213 | <<locked>> | 96% | 48,501 psi | 80% | 2972 fps | 95.7% |
| Alliant Power Pro Varmint | <<locked>> | 88% | 41,930 psi | 69% | 2808 fps | 95.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 47,123 psi | 77% | 2848 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 50,256 psi | 83% | 2917 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 36,724 psi | 60% | 2720 fps | 98.5% |
| Alliant Reloder-17 | <<locked>> | 80% | 41,640 psi | 68% | 2851 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 88% | 41,466 psi | 68% | 2802 fps | 95.3% |
| Alliant Reloder-22 | <<locked>> | 92% | 41,655 psi | 68% | 2851 fps | 95.5% |
| Alliant Reloder-23 | <<locked>> | 80% | 26,992 psi | 44% | 2467 fps | 96.3% |
| Alliant Reloder-25 | <<locked>> | 90% | 32,532 psi | 53% | 2644 fps | 95.5% |
| Alliant Reloder-26 | 67.9 gr | 82% | 30,850 psi | 51% | 2641 fps | 95.7% |
| Bofors RP15 | <<locked>> | 94% | 41,089 psi | 67% | 2838 fps | 95.2% |
| Bofors RP3 | <<locked>> | 80% | 47,529 psi | 78% | 2861 fps | 100% |
| Bofors RP5 | <<locked>> | 92% | 41,655 psi | 68% | 2851 fps | 95.5% |
| Bofors RP7 | <<locked>> | 80% | 41,785 psi | 69% | 2726 fps | 96.5% |
| Hodgdon H380 | <<locked>> | 80% | 47,906 psi | 79% | 2874 fps | 99.6% |
| Hodgdon H414 | <<locked>> | 80% | 39,668 psi | 65% | 2759 fps | 96.5% |
| Hodgdon H4350 | <<locked>> | 80% | 42,641 psi | 70% | 2779 fps | 95.9% |
| Hodgdon H4831 | <<locked>> | 94% | 48,718 psi | 80% | 2920 fps | 95.1% |
| Hodgdon H4831 SC | <<locked>> | 96% | 50,894 psi | 84% | 2959 fps | 95.7% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 34,287 psi | 56% | 2612 fps | 99% |
| Hodgdon Retumbo | <<locked>> | 98% | 41,118 psi | 68% | 2913 fps | 95.8% |
| Hodgdon Superformance | <<locked>> | 80% | 38,638 psi | 63% | 2766 fps | 95.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,282 psi | 45% | 1673 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 48,965 psi | 80% | 2854 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 80% | 51,184 psi | 84% | 2887 fps | 98.9% |
| IMR 4350 | <<locked>> | 80% | 37,434 psi | 61% | 2651 fps | 95.1% |
| IMR 4451 Enduron | <<locked>> | 80% | 43,163 psi | 71% | 2759 fps | 97.3% |
| IMR 4831 | <<locked>> | 80% | 36,289 psi | 60% | 2661 fps | 98.2% |
| IMR 4895 | <<locked>> | 80% | 51,547 psi | 85% | 2946 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 47,500 psi | 78% | 2858 fps | 95% |
| IMR 7828 SSC | <<locked>> | 96% | 46,383 psi | 76% | 2943 fps | 95.2% |
| Lovex S062 | <<locked>> | 80% | 49,153 psi | 81% | 2851 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 40,727 psi | 67% | 2707 fps | 98% |
| Lovex S070 | <<locked>> | 80% | 38,870 psi | 64% | 2687 fps | 96.5% |
| Lovex S071 | <<locked>> | 90% | 33,098 psi | 54% | 2582 fps | 95.3% |
| Norma 203B | <<locked>> | 80% | 49,647 psi | 82% | 2904 fps | 100% |
| Norma 204 | <<locked>> | 84% | 42,192 psi | 69% | 2795 fps | 95.3% |
| Norma MRP | 70.7 gr | 88% | 38,174 psi | 63% | 2802 fps | 95.9% |
| Norma URP | <<locked>> | 80% | 37,434 psi | 61% | 2703 fps | 98.3% |
| Ramshot Big Game | <<locked>> | 80% | 49,966 psi | 82% | 2927 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 46,209 psi | 76% | 2949 fps | 95.5% |
| Ramshot Hunter | <<locked>> | 80% | 36,332 psi | 60% | 2687 fps | 96.4% |
| Ramshot Magnum | <<locked>> | 94% | 38,319 psi | 63% | 2756 fps | 95% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,789 psi | 46% | 1713 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 47,834 psi | 79% | 2854 fps | 98.8% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 44,251 psi | 73% | 2904 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 37,579 psi | 62% | 2730 fps | 98.2% |
| ReloadSwiss RS 70 | 65.6 gr | 80% | 36,347 psi | 60% | 2733 fps | 97.5% |
| ReloadSwiss RS 76 | <<locked>> | 96% | 38,145 psi | 63% | 2831 fps | 95.8% |
| Rottweil R 902 | <<locked>> | 80% | 51,039 psi | 84% | 2864 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 44,628 psi | 73% | 2802 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 46,122 psi | 76% | 2841 fps | 95.3% |
| Rottweil R 905 | <<locked>> | 88% | 40,567 psi | 67% | 2782 fps | 95.2% |
| Rottweil R 907 | <<locked>> | 80% | 41,785 psi | 69% | 2726 fps | 96.5% |
| Shooters World Long Rifle | <<locked>> | 80% | 40,727 psi | 67% | 2707 fps | 98% |
| Shooters World Precision | <<locked>> | 80% | 49,153 psi | 81% | 2851 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 38,870 psi | 64% | 2687 fps | 96.5% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 45,788 psi | 75% | 2858 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 46,006 psi | 76% | 2707 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 39,929 psi | 66% | 2651 fps | 96.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 88% | 40,176 psi | 66% | 2776 fps | 95% |
| Somchem S355 | <<locked>> | 80% | 45,034 psi | 74% | 2802 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 50,676 psi | 83% | 2894 fps | 95.6% |
| Somchem S365 | <<locked>> | 80% | 34,026 psi | 56% | 2661 fps | 99.7% |
| Somchem S385 | <<locked>> | 86% | 38,638 psi | 63% | 2710 fps | 95.5% |
| Vihtavuori N135 | <<locked>> | 80% | 51,401 psi | 84% | 2825 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 51,387 psi | 84% | 2838 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 42,888 psi | 70% | 2726 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 38,899 psi | 64% | 2703 fps | 98.6% |
| Vihtavuori N165 | <<locked>> | 92% | 40,582 psi | 67% | 2743 fps | 95.7% |
| Vihtavuori N540 | <<locked>> | 80% | 49,864 psi | 82% | 2835 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 38,464 psi | 63% | 2707 fps | 98.3% |
| Vihtavuori N555 | <<locked>> | 80% | 29,689 psi | 49% | 2546 fps | 96.5% |
| Vihtavuori N560 | <<locked>> | 94% | 47,369 psi | 78% | 2979 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 38,058 psi | 62% | 2671 fps | 99.8% |
| Winchester 760 | <<locked>> | 80% | 39,813 psi | 65% | 2759 fps | 96.6% |
| Winchester StaBALL HD | <<locked>> | 82% | 25,411 psi | 42% | 2493 fps | 96.1% |
| Winchester Supreme 780 | <<locked>> | 92% | 43,482 psi | 71% | 2808 fps | 95.9% |
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 86 powders for .300 Blaser Mag. loaded with the .3085 | 168gr | Prvi Partizan HP BT. Norma MRP delivers the highest muzzle velocity at 3,127 fps; across all powders the maximum-charge window runs from 1,870 fps to 3,127 fps. Accurate 3100 gives the best case fill at 100 %, and 86 of the 86 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 168.0 gr projectile in 0.3085" calls for a 1:13.0 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, Norma MRP, ReloadSwiss RS 70 rank at the top here: for .300 Blaser Mag. with the .3085 | 168gr | Prvi Partizan HP BT 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.