Load Specifications
Load data in caliber .300 Blaser Mag. with .311 | 174gr | Prvi Partizan FMJ BT bullet and 84 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 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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Max Load - Barrel Length: 25.6"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2700 | <<locked>> | 82% | 54,201 psi | 89% | 2874 fps | 99% |
| Accurate 3100 | <<locked>> | 98% | 52,736 psi | 87% | 2930 fps | 99.8% |
| Accurate 4064 | <<locked>> | 82% | 53,766 psi | 88% | 2861 fps | 100% |
| Accurate 4350 | <<locked>> | 90% | 54,549 psi | 90% | 2976 fps | 100% |
| Accurate High Country | <<locked>> | 96% | 53,693 psi | 88% | 3071 fps | 97.8% |
| Accurate MAGPRO | <<locked>> | 98% | 54,694 psi | 90% | 3071 fps | 96.7% |
| ADI AR 2208 | <<locked>> | 84% | 53,664 psi | 88% | 2894 fps | 100% |
| ADI AR 2209 | <<locked>> | 94% | 51,953 psi | 85% | 2963 fps | 98.2% |
| ADI AR 2213 | <<locked>> | 98% | 53,229 psi | 87% | 3018 fps | 97.3% |
| Alliant Power Pro Varmint | <<locked>> | 94% | 52,170 psi | 86% | 2963 fps | 98.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 54,650 psi | 90% | 2920 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 54,752 psi | 90% | 2943 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 90% | 51,837 psi | 85% | 2976 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 86% | 52,910 psi | 87% | 2999 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 96% | 54,824 psi | 90% | 3009 fps | 98.7% |
| Alliant Reloder-22 | <<locked>> | 98% | 52,388 psi | 86% | 3015 fps | 98.4% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 52,910 psi | 87% | 2995 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 45,992 psi | 76% | 2930 fps | 99.7% |
| Alliant Reloder-26 | <<locked>> | 96% | 53,084 psi | 87% | 3087 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 51,387 psi | 84% | 2995 fps | 98.2% |
| Bofors RP3 | <<locked>> | 82% | 51,967 psi | 85% | 2884 fps | 100% |
| Bofors RP5 | <<locked>> | 98% | 52,388 psi | 86% | 3015 fps | 98.4% |
| Bofors RP7 | <<locked>> | 88% | 54,868 psi | 90% | 2927 fps | 99.2% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 45,716 psi | 75% | 2864 fps | 96.3% |
| Hodgdon H380 | <<locked>> | 82% | 52,286 psi | 86% | 2900 fps | 100% |
| Hodgdon H414 | <<locked>> | 88% | 53,200 psi | 87% | 2976 fps | 99.4% |
| Hodgdon H4350 | <<locked>> | 86% | 52,866 psi | 87% | 2930 fps | 98.5% |
| Hodgdon H4831 | <<locked>> | 96% | 53,301 psi | 88% | 2956 fps | 96.6% |
| Hodgdon H4831 SC | <<locked>> | 96% | 52,141 psi | 86% | 2940 fps | 96.4% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 52,301 psi | 86% | 2904 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 44,976 psi | 74% | 2966 fps | 97.7% |
| Hodgdon Superformance | <<locked>> | 88% | 53,011 psi | 87% | 3005 fps | 99.3% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,448 psi | 60% | 1834 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 53,287 psi | 87% | 2877 fps | 100% |
| IMR 4350 | <<locked>> | 90% | 52,533 psi | 86% | 2907 fps | 99% |
| IMR 4451 Enduron | <<locked>> | 86% | 53,026 psi | 87% | 2897 fps | 99.3% |
| IMR 4831 | <<locked>> | 92% | 55,056 psi | 90% | 2966 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 54,810 psi | 90% | 2946 fps | 97.1% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 54,230 psi | 89% | 3048 fps | 97.6% |
| Lovex S062 | <<locked>> | 82% | 53,476 psi | 88% | 2871 fps | 100% |
| Lovex S065 | <<locked>> | 88% | 53,156 psi | 87% | 2894 fps | 99.8% |
| Lovex S070 | <<locked>> | 90% | 54,491 psi | 89% | 2940 fps | 99.6% |
| Lovex S071ᴾ | <<locked>> | 100% | 46,789 psi | 77% | 2831 fps | 99.2% |
| Norma 203B | <<locked>> | 82% | 54,056 psi | 89% | 2927 fps | 100% |
| Norma 204 | <<locked>> | 90% | 53,011 psi | 87% | 2956 fps | 98.2% |
| Norma MRP | <<locked>> | 96% | 51,822 psi | 85% | 3038 fps | 99.3% |
| Norma URP | <<locked>> | 90% | 53,403 psi | 88% | 2959 fps | 100% |
| Ramshot Big Game | <<locked>> | 82% | 54,795 psi | 90% | 2953 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 54,897 psi | 90% | 3068 fps | 98.1% |
| Ramshot Hunter | <<locked>> | 90% | 52,156 psi | 86% | 2959 fps | 99.7% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 49,081 psi | 81% | 2936 fps | 98.5% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,144 psi | 61% | 1880 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 52,054 psi | 85% | 2881 fps | 99.5% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 52,359 psi | 86% | 2989 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 54,433 psi | 89% | 2995 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 52,794 psi | 87% | 3025 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 45,165 psi | 74% | 2963 fps | 98.7% |
| Rottweil R 903 | <<locked>> | 84% | 52,040 psi | 85% | 2881 fps | 100% |
| Rottweil R 904 | <<locked>> | 94% | 53,708 psi | 88% | 2936 fps | 97.4% |
| Rottweil R 905 | <<locked>> | 96% | 54,259 psi | 89% | 2999 fps | 98.7% |
| Rottweil R 907 | <<locked>> | 88% | 54,868 psi | 90% | 2927 fps | 99.2% |
| Shooters World Long Rifle | <<locked>> | 88% | 53,156 psi | 87% | 2894 fps | 99.8% |
| Shooters World Precision | <<locked>> | 82% | 53,476 psi | 88% | 2871 fps | 100% |
| Shooters World SW4350 | <<locked>> | 90% | 54,491 psi | 89% | 2940 fps | 99.6% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 53,490 psi | 88% | 2940 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 52,924 psi | 87% | 2762 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 52,765 psi | 87% | 2844 fps | 99.3% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 53,780 psi | 88% | 2992 fps | 98.6% |
| Somchem S355 | <<locked>> | 84% | 52,040 psi | 85% | 2874 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 51,837 psi | 85% | 2871 fps | 96.2% |
| Somchem S365 | <<locked>> | 92% | 52,866 psi | 87% | 2963 fps | 100% |
| Somchem S385 | <<locked>> | 96% | 54,781 psi | 90% | 2969 fps | 99.2% |
| Vihtavuori N150 | <<locked>> | 86% | 53,388 psi | 88% | 2851 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 51,880 psi | 85% | 2900 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 54,143 psi | 89% | 2943 fps | 98.9% |
| Vihtavuori N540 | <<locked>> | 82% | 54,201 psi | 89% | 2851 fps | 100% |
| Vihtavuori N550 | <<locked>> | 90% | 54,462 psi | 89% | 2959 fps | 100% |
| Vihtavuori N555 | <<locked>> | 96% | 52,040 psi | 85% | 2972 fps | 100% |
| Vihtavuori N560 | <<locked>> | 96% | 52,069 psi | 85% | 3025 fps | 96.8% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 47,834 psi | 79% | 2933 fps | 96% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 54,969 psi | 90% | 2917 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 53,200 psi | 87% | 2976 fps | 99.4% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 48,399 psi | 79% | 3068 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 54,955 psi | 90% | 2966 fps | 98.6% |
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% | 50,749 psi | 83% | 2818 fps | 98.5% |
| Accurate 3100 | <<locked>> | 84% | 32,677 psi | 54% | 2530 fps | 95.6% |
| Accurate 4064 | <<locked>> | 80% | 50,502 psi | 83% | 2812 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 38,856 psi | 64% | 2694 fps | 98.9% |
| Accurate High Country | <<locked>> | 90% | 43,511 psi | 71% | 2877 fps | 95.3% |
| Accurate MAGPRO | <<locked>> | 96% | 51,024 psi | 84% | 3009 fps | 95.8% |
| ADI AR 2208 | <<locked>> | 80% | 47,543 psi | 78% | 2792 fps | 100% |
| ADI AR 2209 | <<locked>> | 86% | 40,016 psi | 66% | 2726 fps | 95.1% |
| ADI AR 2213 | <<locked>> | 94% | 46,572 psi | 76% | 2890 fps | 95.6% |
| Alliant Power Pro Varmint | <<locked>> | 86% | 40,263 psi | 66% | 2730 fps | 95.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 48,225 psi | 79% | 2818 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 51,430 psi | 84% | 2887 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 37,695 psi | 62% | 2700 fps | 99% |
| Alliant Reloder-17 | <<locked>> | 80% | 42,830 psi | 70% | 2828 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 86% | 39,842 psi | 65% | 2723 fps | 95.2% |
| Alliant Reloder-22 | <<locked>> | 90% | 40,103 psi | 66% | 2772 fps | 95.5% |
| Alliant Reloder-23 | <<locked>> | 80% | 27,630 psi | 45% | 2448 fps | 97.1% |
| Alliant Reloder-25 | <<locked>> | 88% | 31,328 psi | 51% | 2572 fps | 95.5% |
| Alliant Reloder-26 | <<locked>> | 80% | 29,602 psi | 49% | 2562 fps | 95.6% |
| Bofors RP15 | <<locked>> | 92% | 39,566 psi | 65% | 2759 fps | 95.1% |
| Bofors RP3 | <<locked>> | 80% | 48,530 psi | 80% | 2828 fps | 100% |
| Bofors RP5 | <<locked>> | 90% | 40,103 psi | 66% | 2772 fps | 95.5% |
| Bofors RP7 | <<locked>> | 80% | 42,583 psi | 70% | 2700 fps | 97.1% |
| Hodgdon H1000 | <<locked>> | 98% | 42,612 psi | 70% | 2799 fps | 95.2% |
| Hodgdon H380 | <<locked>> | 80% | 48,907 psi | 80% | 2844 fps | 99.8% |
| Hodgdon H414 | <<locked>> | 80% | 40,727 psi | 67% | 2740 fps | 97.2% |
| Hodgdon H4350 | <<locked>> | 80% | 43,497 psi | 71% | 2756 fps | 96.6% |
| Hodgdon H4831 | <<locked>> | 92% | 46,586 psi | 76% | 2838 fps | 95% |
| Hodgdon H4831 SC | <<locked>> | 94% | 48,834 psi | 80% | 2881 fps | 95.6% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 35,259 psi | 58% | 2592 fps | 99.4% |
| Hodgdon Retumbo | <<locked>> | 96% | 39,508 psi | 65% | 2831 fps | 95.7% |
| Hodgdon Superformance | <<locked>> | 80% | 39,552 psi | 65% | 2746 fps | 96.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,354 psi | 45% | 1644 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 50,024 psi | 82% | 2825 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 38,174 psi | 63% | 2625 fps | 95.8% |
| IMR 4451 Enduron | <<locked>> | 80% | 43,947 psi | 72% | 2730 fps | 97.8% |
| IMR 4831 | <<locked>> | 80% | 37,289 psi | 61% | 2641 fps | 98.7% |
| IMR 4955 Enduron | <<locked>> | 92% | 48,486 psi | 80% | 2835 fps | 95.7% |
| IMR 7828 SSC | <<locked>> | 94% | 44,396 psi | 73% | 2861 fps | 95.1% |
| Lovex S062 | <<locked>> | 80% | 50,285 psi | 83% | 2822 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 41,524 psi | 68% | 2680 fps | 98.5% |
| Lovex S070 | <<locked>> | 80% | 39,813 psi | 65% | 2664 fps | 97.1% |
| Lovex S071 | <<locked>> | 88% | 31,821 psi | 52% | 2510 fps | 95.2% |
| Norma 203B | <<locked>> | 80% | 50,792 psi | 83% | 2874 fps | 100% |
| Norma 204 | <<locked>> | 82% | 40,466 psi | 66% | 2717 fps | 95.1% |
| Norma MRP | 68.8 gr | 86% | 36,593 psi | 60% | 2723 fps | 95.8% |
| Norma URP | <<locked>> | 80% | 38,493 psi | 63% | 2684 fps | 98.8% |
| Ramshot Big Game | <<locked>> | 80% | 51,285 psi | 84% | 2897 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 44,193 psi | 73% | 2867 fps | 95.4% |
| Ramshot Hunter | <<locked>> | 80% | 37,376 psi | 61% | 2671 fps | 97.1% |
| Ramshot Magnum | <<locked>> | 94% | 39,334 psi | 65% | 2743 fps | 95.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,876 psi | 46% | 1683 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 48,747 psi | 80% | 2825 fps | 99.1% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 45,498 psi | 75% | 2877 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 38,537 psi | 63% | 2707 fps | 98.7% |
| ReloadSwiss RS 70 | 65.4 gr | 80% | 37,347 psi | 61% | 2717 fps | 98.2% |
| ReloadSwiss RS 76 | <<locked>> | 94% | 36,506 psi | 60% | 2749 fps | 95.6% |
| Rottweil R 903 | <<locked>> | 80% | 45,774 psi | 75% | 2776 fps | 100% |
| Rottweil R 904 | <<locked>> | 88% | 44,425 psi | 73% | 2766 fps | 95.2% |
| Rottweil R 905 | <<locked>> | 86% | 38,957 psi | 64% | 2703 fps | 95.1% |
| Rottweil R 907 | <<locked>> | 80% | 42,583 psi | 70% | 2700 fps | 97.1% |
| Shooters World Long Rifle | <<locked>> | 80% | 41,524 psi | 68% | 2680 fps | 98.5% |
| Shooters World Precision | <<locked>> | 80% | 50,285 psi | 83% | 2822 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 39,813 psi | 65% | 2664 fps | 97.1% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 46,978 psi | 77% | 2831 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 46,760 psi | 77% | 2671 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 40,683 psi | 67% | 2625 fps | 97.2% |
| SNPE Vectan Tubal 8000 | <<locked>> | 88% | 41,176 psi | 68% | 2756 fps | 95.8% |
| Somchem S355 | <<locked>> | 80% | 45,919 psi | 75% | 2772 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 48,385 psi | 79% | 2808 fps | 95.4% |
| Somchem S365 | <<locked>> | 80% | 34,896 psi | 57% | 2638 fps | 99.9% |
| Somchem S385 | <<locked>> | 84% | 36,956 psi | 61% | 2628 fps | 95.3% |
| Vihtavuori N150 | <<locked>> | 80% | 43,903 psi | 72% | 2700 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 39,943 psi | 66% | 2684 fps | 99% |
| Vihtavuori N165 | <<locked>> | 90% | 38,856 psi | 64% | 2664 fps | 95.6% |
| Vihtavuori N540 | <<locked>> | 80% | 50,792 psi | 83% | 2802 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 39,334 psi | 65% | 2684 fps | 98.8% |
| Vihtavuori N555 | <<locked>> | 80% | 30,705 psi | 50% | 2533 fps | 97.3% |
| Vihtavuori N560 | 73.6 gr | 92% | 45,440 psi | 75% | 2897 fps | 95% |
| Vihtavuori N565 | <<locked>> | 98% | 44,614 psi | 73% | 2871 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 38,914 psi | 64% | 2648 fps | 99.9% |
| Winchester 760 | <<locked>> | 80% | 40,727 psi | 67% | 2740 fps | 97.2% |
| Winchester StaBALL HD | <<locked>> | 80% | 24,497 psi | 40% | 2425 fps | 96% |
| Winchester Supreme 780 | <<locked>> | 90% | 41,539 psi | 68% | 2726 fps | 95.7% |
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 84 powders for .300 Blaser Mag. loaded with the .311 | 174gr | Prvi Partizan FMJ BT. Alliant Reloder-26 delivers the highest muzzle velocity at 3,087 fps; across all powders the maximum-charge window runs from 1,834 fps to 3,087 fps. Alliant Reloder-23 gives the best case fill at 100 %, and 84 of the 84 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 174.0 gr projectile in 0.311" calls for a 1:13.0 twist; slower twists will usually not stabilise this weight. Alliant Reloder-23, Alliant Reloder-25, Bofors RP15 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, ReloadSwiss RS 70 rank at the top here: for .300 Blaser Mag. with the .311 | 174gr | Prvi Partizan FMJ 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.