Load Specifications
Load data in caliber 7 mm Blaser Mag. with .284 | 150gr | Nosler Partition bullet and 73 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Winchester StaBALL HD, 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.
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Max Load - Barrel Length: 25.6"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 94% | 52,634 psi | 86% | 2943 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 53,925 psi | 89% | 2979 fps | 100% |
| Accurate High Country | <<locked>> | 92% | 53,795 psi | 88% | 3091 fps | 98.5% |
| Accurate MAGPRO | <<locked>> | 94% | 54,636 psi | 90% | 3094 fps | 97.6% |
| ADI AR 2209 | <<locked>> | 92% | 54,839 psi | 90% | 3035 fps | 99.2% |
| ADI AR 2213 | <<locked>> | 94% | 52,489 psi | 86% | 3035 fps | 98.1% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 46,978 psi | 77% | 2920 fps | 97.2% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 41,829 psi | 69% | 2881 fps | 98.8% |
| Alliant Power Pro Varmint | <<locked>> | 92% | 54,897 psi | 90% | 3031 fps | 99.2% |
| Alliant Reloder-16 | <<locked>> | 88% | 54,781 psi | 90% | 3038 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 82% | 52,083 psi | 86% | 2995 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 92% | 54,215 psi | 89% | 3022 fps | 99.2% |
| Alliant Reloder-22 | <<locked>> | 94% | 52,330 psi | 86% | 3031 fps | 99.1% |
| Alliant Reloder-23 | <<locked>> | 96% | 53,388 psi | 88% | 3009 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 52,678 psi | 86% | 3064 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 92% | 53,534 psi | 88% | 3097 fps | 100% |
| Bofors RP15 | <<locked>> | 98% | 54,998 psi | 90% | 3074 fps | 99.3% |
| Bofors RP30ᴾ | <<locked>> | 100% | 48,718 psi | 80% | 2999 fps | 98% |
| Bofors RP5 | <<locked>> | 94% | 52,330 psi | 86% | 3031 fps | 99.1% |
| Bofors RP7 | <<locked>> | 84% | 53,316 psi | 88% | 2927 fps | 99.5% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 51,866 psi | 85% | 3015 fps | 98.7% |
| Hodgdon H414 | <<locked>> | 84% | 52,054 psi | 85% | 2976 fps | 99.7% |
| Hodgdon H4350 | <<locked>> | 84% | 54,853 psi | 90% | 2989 fps | 99.4% |
| Hodgdon H4831 | <<locked>> | 92% | 52,562 psi | 86% | 2972 fps | 97.5% |
| Hodgdon H4831 SC | <<locked>> | 94% | 55,056 psi | 90% | 3012 fps | 97.9% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 51,721 psi | 85% | 2907 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 51,648 psi | 85% | 3130 fps | 99.7% |
| Hodgdon Superformance | <<locked>> | 84% | 52,098 psi | 86% | 3009 fps | 99.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,912 psi | 61% | 1877 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 54,650 psi | 90% | 2966 fps | 99.7% |
| IMR 4451 Enduron | <<locked>> | 84% | 54,534 psi | 90% | 2946 fps | 99.8% |
| IMR 4831 | <<locked>> | 88% | 54,273 psi | 89% | 2969 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 53,925 psi | 89% | 2963 fps | 97.9% |
| IMR 7828 SSC | <<locked>> | 96% | 53,882 psi | 88% | 3071 fps | 98.4% |
| Lovex S065 | <<locked>> | 84% | 52,011 psi | 85% | 2897 fps | 100% |
| Lovex S070 | <<locked>> | 86% | 53,243 psi | 87% | 2943 fps | 99.8% |
| Lovex S071ᴾ | <<locked>> | 100% | 53,621 psi | 88% | 2959 fps | 100% |
| Norma 204 | <<locked>> | 86% | 51,793 psi | 85% | 2959 fps | 98.7% |
| Norma 217ᴾ | <<locked>> | 100% | 37,318 psi | 61% | 2799 fps | 96.9% |
| Norma MRP | <<locked>> | 92% | 52,011 psi | 85% | 3054 fps | 99.7% |
| Norma URP | <<locked>> | 86% | 52,475 psi | 86% | 2963 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 54,491 psi | 89% | 3091 fps | 98.8% |
| Ramshot Hunter | <<locked>> | 88% | 54,911 psi | 90% | 3022 fps | 100% |
| Ramshot Magnum | <<locked>> | 98% | 52,562 psi | 86% | 3018 fps | 99.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,753 psi | 62% | 1923 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 54,012 psi | 89% | 3005 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 52,025 psi | 85% | 3028 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 52,011 psi | 85% | 3127 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 47,123 psi | 77% | 2999 fps | 96.1% |
| Rottweil R 903 | <<locked>> | 82% | 54,375 psi | 89% | 2930 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 52,692 psi | 87% | 2946 fps | 98.1% |
| Rottweil R 905 | <<locked>> | 92% | 53,693 psi | 88% | 3009 fps | 99.2% |
| Rottweil R 907 | <<locked>> | 84% | 53,316 psi | 88% | 2927 fps | 99.5% |
| Shooters World Long Rifle | <<locked>> | 84% | 52,011 psi | 85% | 2897 fps | 100% |
| Shooters World SW4350 | <<locked>> | 86% | 53,243 psi | 87% | 2943 fps | 99.8% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 54,360 psi | 89% | 2799 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 54,418 psi | 89% | 2897 fps | 99.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 53,258 psi | 87% | 3005 fps | 99.1% |
| Somchem S355 | <<locked>> | 82% | 54,215 psi | 89% | 2927 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 54,099 psi | 89% | 2936 fps | 97.7% |
| Somchem S365 | <<locked>> | 88% | 52,634 psi | 86% | 2966 fps | 100% |
| Somchem S385 | <<locked>> | 92% | 54,186 psi | 89% | 2982 fps | 99.6% |
| Vihtavuori N150 | <<locked>> | 82% | 51,895 psi | 85% | 2844 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 54,331 psi | 89% | 2956 fps | 100% |
| Vihtavuori N165 | <<locked>> | 96% | 53,751 psi | 88% | 2963 fps | 99.4% |
| Vihtavuori N550 | <<locked>> | 86% | 53,664 psi | 88% | 2963 fps | 100% |
| Vihtavuori N555 | <<locked>> | 92% | 52,170 psi | 86% | 2982 fps | 100% |
| Vihtavuori N560 | <<locked>> | 92% | 51,982 psi | 85% | 3045 fps | 97.7% |
| Vihtavuori N565 | <<locked>> | 98% | 51,517 psi | 85% | 3018 fps | 97.8% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 53,737 psi | 88% | 2913 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 52,286 psi | 86% | 2979 fps | 99.7% |
| Winchester StaBALL HD | <<locked>> | 98% | 54,157 psi | 89% | 3143 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 54,128 psi | 89% | 2976 fps | 99.1% |
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 3100 | <<locked>> | 80% | 32,692 psi | 54% | 2543 fps | 96.5% |
| Accurate 4350 | <<locked>> | 80% | 43,961 psi | 72% | 2808 fps | 99.9% |
| Accurate High Country | <<locked>> | 84% | 40,625 psi | 67% | 2831 fps | 95.3% |
| Accurate MAGPRO | <<locked>> | 88% | 44,150 psi | 72% | 2894 fps | 95% |
| ADI AR 2209 | <<locked>> | 80% | 36,767 psi | 60% | 2671 fps | 95% |
| ADI AR 2213 | <<locked>> | 88% | 42,772 psi | 70% | 2841 fps | 95.7% |
| ADI AR 2217 | <<locked>> | 96% | 41,031 psi | 67% | 2792 fps | 95.3% |
| ADI AR 2225 | <<locked>> | 92% | 32,329 psi | 53% | 2628 fps | 95.1% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 37,072 psi | 61% | 2674 fps | 95.2% |
| Alliant Reloder-16 | <<locked>> | 80% | 42,134 psi | 69% | 2815 fps | 99.9% |
| Alliant Reloder-17 | <<locked>> | 80% | 48,544 psi | 80% | 2936 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 36,738 psi | 60% | 2671 fps | 95.1% |
| Alliant Reloder-22 | <<locked>> | 84% | 37,260 psi | 61% | 2723 fps | 95.5% |
| Alliant Reloder-23 | <<locked>> | 80% | 31,299 psi | 51% | 2572 fps | 99.2% |
| Alliant Reloder-25 | <<locked>> | 82% | 29,254 psi | 48% | 2530 fps | 95.6% |
| Alliant Reloder-26 | <<locked>> | 80% | 34,040 psi | 56% | 2707 fps | 98.4% |
| Bofors RP15 | <<locked>> | 86% | 36,985 psi | 61% | 2713 fps | 95.2% |
| Bofors RP30 | <<locked>> | 94% | 39,726 psi | 65% | 2815 fps | 95.6% |
| Bofors RP5 | <<locked>> | 84% | 37,260 psi | 61% | 2723 fps | 95.5% |
| Bofors RP7 | <<locked>> | 80% | 46,876 psi | 77% | 2812 fps | 98.7% |
| Hodgdon H1000 | <<locked>> | 92% | 39,479 psi | 65% | 2759 fps | 95.5% |
| Hodgdon H414 | <<locked>> | 80% | 45,643 psi | 75% | 2858 fps | 99% |
| Hodgdon H4350 | <<locked>> | 80% | 48,240 psi | 79% | 2874 fps | 98.5% |
| Hodgdon H4831 | <<locked>> | 86% | 42,844 psi | 70% | 2789 fps | 95% |
| Hodgdon H4831 SC | <<locked>> | 88% | 44,889 psi | 74% | 2828 fps | 95.6% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 39,711 psi | 65% | 2697 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 90% | 36,970 psi | 61% | 2795 fps | 95.9% |
| Hodgdon Superformance | <<locked>> | 80% | 44,875 psi | 74% | 2877 fps | 98.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,702 psi | 45% | 1680 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 42,467 psi | 70% | 2743 fps | 97.9% |
| IMR 4451 Enduron | <<locked>> | 80% | 48,269 psi | 79% | 2841 fps | 99.2% |
| IMR 4831 | <<locked>> | 80% | 41,872 psi | 69% | 2753 fps | 99.8% |
| IMR 4955 Enduron | <<locked>> | 86% | 44,614 psi | 73% | 2789 fps | 95.7% |
| IMR 7828 SSC | <<locked>> | 88% | 41,075 psi | 67% | 2815 fps | 95.2% |
| Lovex S065 | <<locked>> | 80% | 45,774 psi | 75% | 2785 fps | 99.6% |
| Lovex S070 | <<locked>> | 80% | 44,222 psi | 73% | 2779 fps | 98.8% |
| Lovex S071 | <<locked>> | 82% | 29,994 psi | 49% | 2470 fps | 95.4% |
| Norma 204 | <<locked>> | 80% | 42,351 psi | 70% | 2776 fps | 96.7% |
| Norma 217 | <<locked>> | 98% | 34,954 psi | 57% | 2736 fps | 95.9% |
| Norma MRP | 60 gr | 80% | 33,997 psi | 56% | 2671 fps | 95.7% |
| Norma URP | <<locked>> | 80% | 43,265 psi | 71% | 2799 fps | 99.8% |
| Ramshot Grand | <<locked>> | 88% | 40,756 psi | 67% | 2822 fps | 95.5% |
| Ramshot Hunter | <<locked>> | 80% | 42,119 psi | 69% | 2789 fps | 98.9% |
| Ramshot Magnum | <<locked>> | 88% | 36,492 psi | 60% | 2700 fps | 96.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,166 psi | 46% | 1719 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 43,729 psi | 72% | 2825 fps | 99.8% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 41,989 psi | 69% | 2841 fps | 99.7% |
| ReloadSwiss RS 76 | <<locked>> | 88% | 33,953 psi | 56% | 2707 fps | 95.8% |
| ReloadSwiss RS 80 | <<locked>> | 98% | 43,613 psi | 72% | 2927 fps | 95% |
| Rottweil R 903 | <<locked>> | 80% | 51,024 psi | 84% | 2877 fps | 100% |
| Rottweil R 904 | <<locked>> | 82% | 40,712 psi | 67% | 2713 fps | 95.2% |
| Rottweil R 905 | <<locked>> | 80% | 36,071 psi | 59% | 2654 fps | 95.1% |
| Rottweil R 907 | <<locked>> | 80% | 46,876 psi | 77% | 2812 fps | 98.7% |
| Shooters World Long Rifle | <<locked>> | 80% | 45,774 psi | 75% | 2785 fps | 99.6% |
| Shooters World SW4350 | <<locked>> | 80% | 44,222 psi | 73% | 2779 fps | 98.8% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 51,285 psi | 84% | 2756 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 44,831 psi | 74% | 2733 fps | 98.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 82% | 38,203 psi | 63% | 2707 fps | 95.8% |
| Somchem S355 | <<locked>> | 80% | 50,705 psi | 83% | 2871 fps | 100% |
| Somchem S361 | <<locked>> | 84% | 44,309 psi | 73% | 2759 fps | 95.4% |
| Somchem S365 | <<locked>> | 80% | 40,103 psi | 66% | 2753 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 36,579 psi | 60% | 2638 fps | 96.2% |
| Vihtavuori N150 | <<locked>> | 80% | 48,718 psi | 80% | 2795 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 44,628 psi | 73% | 2792 fps | 99.9% |
| Vihtavuori N165 | <<locked>> | 84% | 36,216 psi | 59% | 2621 fps | 95.7% |
| Vihtavuori N550 | <<locked>> | 80% | 43,961 psi | 72% | 2792 fps | 99.8% |
| Vihtavuori N555 | <<locked>> | 80% | 35,230 psi | 58% | 2651 fps | 99.1% |
| Vihtavuori N560 | 64.5 gr | 86% | 42,206 psi | 69% | 2851 fps | 95.1% |
| Vihtavuori N565 | <<locked>> | 92% | 42,032 psi | 69% | 2835 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 43,729 psi | 72% | 2753 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 45,861 psi | 75% | 2861 fps | 99% |
| Winchester StaBALL HD | 59.4 gr | 80% | 27,862 psi | 46% | 2579 fps | 99.2% |
| Winchester Supreme 780 | <<locked>> | 84% | 38,218 psi | 63% | 2674 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 73 powders for 7 mm Blaser Mag. loaded with the .284 | 150gr | Nosler Partition. Winchester StaBALL HD delivers the highest muzzle velocity at 3,143 fps; across all powders the maximum-charge window runs from 1,877 fps to 3,143 fps. ADI AR 2217 gives the best case fill at 100 %, and 73 of the 73 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (420 MPa), the top charges use 61–90 %, leaving at least 10 % headroom. The 150.0 gr projectile in 0.284" calls for a 1:11.5 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. Winchester StaBALL HD, Norma MRP, Vihtavuori N560 rank at the top here: for 7 mm Blaser Mag. with the .284 | 150gr | Nosler Partition 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.