Load Specifications
Load data in caliber 7 mm Blaser Mag. with .284 | 145gr | Hasler ARIETE bullet and 79 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.
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Max Load - Barrel Length: 25.6"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 98% | 54,172 psi | 89% | 3009 fps | 99.9% |
| Accurate 4064 | <<locked>> | 82% | 54,621 psi | 90% | 2936 fps | 100% |
| Accurate 4350 | <<locked>> | 88% | 52,344 psi | 86% | 3002 fps | 100% |
| Accurate MAGPRO | <<locked>> | 96% | 52,794 psi | 87% | 3100 fps | 96.6% |
| ADI AR 2208 | <<locked>> | 84% | 54,868 psi | 90% | 2976 fps | 100% |
| ADI AR 2209 | <<locked>> | 94% | 53,621 psi | 88% | 3054 fps | 98.7% |
| ADI AR 2213 | <<locked>> | 98% | 55,056 psi | 90% | 3114 fps | 98% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 37,579 psi | 62% | 2805 fps | 96.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 52,315 psi | 86% | 2946 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 90% | 53,621 psi | 88% | 3068 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 86% | 54,607 psi | 90% | 3081 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 94% | 53,185 psi | 87% | 3041 fps | 98.7% |
| Alliant Reloder-22 | <<locked>> | 98% | 54,346 psi | 89% | 3107 fps | 99% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 54,969 psi | 90% | 3081 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 47,427 psi | 78% | 3015 fps | 99.9% |
| Alliant Reloder-26 | <<locked>> | 94% | 51,140 psi | 84% | 3110 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 53,243 psi | 87% | 3087 fps | 98.7% |
| Bofors RP3 | <<locked>> | 82% | 53,084 psi | 87% | 2959 fps | 100% |
| Bofors RP30ᴾ | <<locked>> | 100% | 43,265 psi | 71% | 2930 fps | 96% |
| Bofors RP5 | <<locked>> | 98% | 54,346 psi | 89% | 3107 fps | 99% |
| Bofors RP7 | <<locked>> | 86% | 52,489 psi | 86% | 2949 fps | 99.1% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 47,079 psi | 77% | 2959 fps | 97.1% |
| Hodgdon H380 | <<locked>> | 82% | 53,388 psi | 88% | 2982 fps | 100% |
| Hodgdon H414 | <<locked>> | 88% | 54,694 psi | 90% | 3061 fps | 99.7% |
| Hodgdon H4350 | <<locked>> | 86% | 54,273 psi | 89% | 3018 fps | 98.9% |
| Hodgdon H4831 | <<locked>> | 96% | 55,056 psi | 90% | 3051 fps | 97.4% |
| Hodgdon H4831 SC | <<locked>> | 96% | 53,983 psi | 89% | 3031 fps | 97.2% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 53,795 psi | 88% | 2982 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 46,514 psi | 76% | 3064 fps | 98.4% |
| Hodgdon Superformance | <<locked>> | 88% | 54,926 psi | 90% | 3097 fps | 99.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,622 psi | 60% | 1890 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 54,346 psi | 89% | 2956 fps | 100% |
| IMR 4350 | <<locked>> | 90% | 53,693 psi | 88% | 2989 fps | 99.3% |
| IMR 4451 Enduron | <<locked>> | 86% | 54,186 psi | 89% | 2982 fps | 99.5% |
| IMR 4831 | <<locked>> | 90% | 53,040 psi | 87% | 2995 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 52,997 psi | 87% | 2979 fps | 97.1% |
| IMR 7828 SSC | <<locked>> | 98% | 52,388 psi | 86% | 3081 fps | 97.6% |
| Lovex S062 | <<locked>> | 82% | 54,491 psi | 89% | 2946 fps | 100% |
| Lovex S065 | <<locked>> | 88% | 54,375 psi | 89% | 2976 fps | 100% |
| Lovex S070 | <<locked>> | 88% | 52,228 psi | 86% | 2963 fps | 99.5% |
| Lovex S071ᴾ | <<locked>> | 100% | 47,993 psi | 79% | 2910 fps | 99.5% |
| Norma 204 | <<locked>> | 90% | 54,520 psi | 90% | 3041 fps | 98.7% |
| Norma MRP | <<locked>> | 96% | 53,853 psi | 88% | 3130 fps | 99.7% |
| Norma URP | <<locked>> | 90% | 54,853 psi | 90% | 3045 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 52,924 psi | 87% | 3100 fps | 98.1% |
| Ramshot Hunter | <<locked>> | 90% | 53,650 psi | 88% | 3045 fps | 99.9% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 51,024 psi | 84% | 3031 fps | 99.1% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,188 psi | 61% | 1932 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 53,171 psi | 87% | 2963 fps | 99.7% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 54,172 psi | 89% | 3074 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 52,373 psi | 86% | 3025 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 54,549 psi | 90% | 3114 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 46,688 psi | 77% | 3058 fps | 99.3% |
| Rottweil R 903 | <<locked>> | 84% | 53,200 psi | 87% | 2956 fps | 100% |
| Rottweil R 904 | <<locked>> | 94% | 55,100 psi | 90% | 3022 fps | 98% |
| Rottweil R 905 | <<locked>> | 94% | 52,388 psi | 86% | 3028 fps | 98.7% |
| Rottweil R 907 | <<locked>> | 86% | 52,489 psi | 86% | 2949 fps | 99.1% |
| Shooters World Long Rifle | <<locked>> | 88% | 54,375 psi | 89% | 2976 fps | 100% |
| Shooters World Precision | <<locked>> | 82% | 54,491 psi | 89% | 2946 fps | 100% |
| Shooters World SW4350 | <<locked>> | 88% | 52,228 psi | 86% | 2963 fps | 99.5% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 54,868 psi | 90% | 3022 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 54,114 psi | 89% | 2838 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 53,708 psi | 88% | 2927 fps | 99.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 51,953 psi | 85% | 3025 fps | 98.6% |
| Somchem S355 | <<locked>> | 84% | 53,272 psi | 87% | 2956 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 53,142 psi | 87% | 2956 fps | 96.9% |
| Somchem S365 | <<locked>> | 92% | 54,505 psi | 89% | 3045 fps | 100% |
| Somchem S385 | <<locked>> | 94% | 52,924 psi | 87% | 3002 fps | 99.2% |
| Vihtavuori N150 | <<locked>> | 86% | 54,549 psi | 90% | 2927 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 53,301 psi | 88% | 2982 fps | 100% |
| Vihtavuori N165 | <<locked>> | 98% | 52,243 psi | 86% | 2972 fps | 98.9% |
| Vihtavuori N550 | <<locked>> | 88% | 52,344 psi | 86% | 2986 fps | 100% |
| Vihtavuori N555 | <<locked>> | 96% | 53,534 psi | 88% | 3054 fps | 100% |
| Vihtavuori N560 | <<locked>> | 96% | 53,969 psi | 89% | 3120 fps | 97.5% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 49,530 psi | 81% | 3022 fps | 96.8% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 52,765 psi | 87% | 2943 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 54,911 psi | 90% | 3064 fps | 99.7% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 51,242 psi | 84% | 3159 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 53,011 psi | 87% | 2995 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 3100 | <<locked>> | 82% | 30,908 psi | 51% | 2536 fps | 95.1% |
| Accurate 4064 | <<locked>> | 80% | 51,111 psi | 84% | 2884 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 39,378 psi | 65% | 2759 fps | 99.2% |
| Accurate MAGPRO | <<locked>> | 94% | 49,255 psi | 81% | 3035 fps | 95.8% |
| ADI AR 2208 | <<locked>> | 80% | 48,385 psi | 79% | 2867 fps | 100% |
| ADI AR 2209 | <<locked>> | 86% | 40,988 psi | 67% | 2808 fps | 95.8% |
| ADI AR 2213 | <<locked>> | 92% | 44,802 psi | 74% | 2917 fps | 95.5% |
| ADI AR 2225 | <<locked>> | 98% | 35,201 psi | 58% | 2743 fps | 95.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 48,965 psi | 80% | 2890 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 38,406 psi | 63% | 2776 fps | 99.3% |
| Alliant Reloder-17 | <<locked>> | 80% | 44,063 psi | 72% | 2907 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 86% | 40,727 psi | 67% | 2802 fps | 95.8% |
| Alliant Reloder-22 | <<locked>> | 88% | 38,522 psi | 63% | 2795 fps | 95.3% |
| Alliant Reloder-23 | <<locked>> | 80% | 27,949 psi | 46% | 2513 fps | 97.6% |
| Alliant Reloder-25 | <<locked>> | 86% | 29,921 psi | 49% | 2585 fps | 95.1% |
| Alliant Reloder-26 | 59.6 gr | 80% | 30,081 psi | 49% | 2635 fps | 96.2% |
| Bofors RP15 | <<locked>> | 92% | 40,698 psi | 67% | 2841 fps | 95.8% |
| Bofors RP3 | <<locked>> | 80% | 49,603 psi | 81% | 2907 fps | 100% |
| Bofors RP30 | <<locked>> | 98% | 40,350 psi | 66% | 2867 fps | 95.1% |
| Bofors RP5 | <<locked>> | 88% | 38,522 psi | 63% | 2795 fps | 95.3% |
| Bofors RP7 | <<locked>> | 80% | 43,250 psi | 71% | 2779 fps | 97.5% |
| Hodgdon H1000 | <<locked>> | 96% | 40,973 psi | 67% | 2825 fps | 95.1% |
| Hodgdon H380 | <<locked>> | 80% | 49,951 psi | 82% | 2923 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 80% | 41,597 psi | 68% | 2815 fps | 97.7% |
| Hodgdon H4350 | <<locked>> | 80% | 44,585 psi | 73% | 2838 fps | 97.2% |
| Hodgdon H4831 | <<locked>> | 92% | 47,979 psi | 79% | 2927 fps | 95.8% |
| Hodgdon H4831 SC | <<locked>> | 92% | 47,065 psi | 77% | 2907 fps | 95.5% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 35,868 psi | 59% | 2657 fps | 99.6% |
| Hodgdon Retumbo | <<locked>> | 94% | 38,014 psi | 62% | 2858 fps | 95.5% |
| Hodgdon Superformance | <<locked>> | 80% | 40,669 psi | 67% | 2831 fps | 97.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,282 psi | 45% | 1690 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 50,865 psi | 84% | 2900 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 38,885 psi | 64% | 2700 fps | 96.4% |
| IMR 4451 Enduron | <<locked>> | 80% | 44,875 psi | 74% | 2812 fps | 98.3% |
| IMR 4831 | <<locked>> | 80% | 37,942 psi | 62% | 2710 fps | 99% |
| IMR 4955 Enduron | <<locked>> | 90% | 46,543 psi | 76% | 2861 fps | 95.6% |
| IMR 7828 SSC | <<locked>> | 94% | 45,643 psi | 75% | 2949 fps | 95.9% |
| Lovex S062 | <<locked>> | 80% | 51,010 psi | 84% | 2894 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 42,090 psi | 69% | 2753 fps | 98.8% |
| Lovex S070 | <<locked>> | 80% | 40,335 psi | 66% | 2736 fps | 97.5% |
| Lovex S071 | <<locked>> | 88% | 32,343 psi | 53% | 2575 fps | 95.8% |
| Norma 204 | <<locked>> | 82% | 41,379 psi | 68% | 2795 fps | 95.8% |
| Norma MRP | 60.8 gr | 84% | 35,085 psi | 58% | 2740 fps | 95.5% |
| Norma URP | <<locked>> | 80% | 39,160 psi | 64% | 2756 fps | 99.1% |
| Ramshot Grand | <<locked>> | 92% | 42,453 psi | 70% | 2894 fps | 95.3% |
| Ramshot Hunter | <<locked>> | 80% | 38,232 psi | 63% | 2746 fps | 97.6% |
| Ramshot Magnum | <<locked>> | 92% | 37,637 psi | 62% | 2762 fps | 95.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,673 psi | 45% | 1729 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 49,864 psi | 82% | 2907 fps | 99.5% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 46,833 psi | 77% | 2959 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 39,465 psi | 65% | 2782 fps | 99% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 38,218 psi | 63% | 2795 fps | 98.7% |
| ReloadSwiss RS 76 | <<locked>> | 92% | 34,853 psi | 57% | 2766 fps | 95.4% |
| Rottweil R 903 | <<locked>> | 80% | 46,470 psi | 76% | 2848 fps | 100% |
| Rottweil R 904 | <<locked>> | 86% | 42,569 psi | 70% | 2789 fps | 95% |
| Rottweil R 905 | <<locked>> | 86% | 39,914 psi | 66% | 2785 fps | 95.8% |
| Rottweil R 907 | <<locked>> | 80% | 43,250 psi | 71% | 2779 fps | 97.5% |
| Shooters World Long Rifle | <<locked>> | 80% | 42,090 psi | 69% | 2753 fps | 98.8% |
| Shooters World Precision | <<locked>> | 80% | 51,010 psi | 84% | 2894 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 40,335 psi | 66% | 2736 fps | 97.5% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 48,109 psi | 79% | 2910 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 47,572 psi | 78% | 2743 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 41,321 psi | 68% | 2697 fps | 97.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 86% | 39,552 psi | 65% | 2776 fps | 95.6% |
| Somchem S355 | <<locked>> | 80% | 46,688 psi | 77% | 2844 fps | 100% |
| Somchem S361 | <<locked>> | 88% | 46,514 psi | 76% | 2835 fps | 95.3% |
| Somchem S365 | <<locked>> | 80% | 35,708 psi | 59% | 2710 fps | 100% |
| Somchem S385 | <<locked>> | 82% | 35,346 psi | 58% | 2644 fps | 95.1% |
| Vihtavuori N150 | <<locked>> | 80% | 44,614 psi | 73% | 2769 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 40,611 psi | 67% | 2753 fps | 99.3% |
| Vihtavuori N165 | <<locked>> | 88% | 37,318 psi | 61% | 2687 fps | 95.4% |
| Vihtavuori N550 | <<locked>> | 80% | 40,176 psi | 66% | 2756 fps | 99.1% |
| Vihtavuori N555 | <<locked>> | 80% | 31,183 psi | 51% | 2595 fps | 97.6% |
| Vihtavuori N560 | 66.5 gr | 92% | 46,862 psi | 77% | 2989 fps | 95.8% |
| Vihtavuori N565 | <<locked>> | 96% | 42,917 psi | 70% | 2894 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 39,914 psi | 66% | 2723 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 41,800 psi | 69% | 2818 fps | 97.7% |
| Winchester StaBALL HD | <<locked>> | 80% | 24,700 psi | 41% | 2487 fps | 96.7% |
| Winchester Supreme 780 | <<locked>> | 88% | 39,856 psi | 65% | 2746 fps | 95.5% |
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 7 mm Blaser Mag. loaded with the .284 | 145gr | Hasler ARIETE. Winchester StaBALL HD delivers the highest muzzle velocity at 3,159 fps; across all powders the maximum-charge window runs from 1,890 fps to 3,159 fps. ADI AR 2217 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 54–90 %, leaving at least 10 % headroom. The 145.0 gr projectile in 0.284" calls for a 1:9.0 twist; slower twists will usually not stabilise this weight. ADI AR 2217, ADI AR 2225, 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, Vihtavuori N560 rank at the top here: for 7 mm Blaser Mag. with the .284 | 145gr | Hasler ARIETE they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Baschieri & Pellagri 109, Norma 217, ReloadSwiss RS 80 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.