Load Specifications
Load data in caliber 7 mm Blaser Mag. with .284 | 125gr | Hasler ARIETE bullet and 88 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 Alliant Reloder-16.
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 2495 | <<locked>> | 82% | 52,083 psi | 86% | 3058 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 54,157 psi | 89% | 3130 fps | 98.1% |
| Accurate 3100ᴾ | <<locked>> | 100% | 51,343 psi | 84% | 3156 fps | 99% |
| Accurate 4064 | <<locked>> | 84% | 52,692 psi | 87% | 3120 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 53,432 psi | 88% | 3222 fps | 99.9% |
| Accurate High Country | <<locked>> | 98% | 52,707 psi | 87% | 3310 fps | 96.4% |
| ADI AR 2208 | <<locked>> | 86% | 53,563 psi | 88% | 3159 fps | 100% |
| ADI AR 2209 | <<locked>> | 98% | 54,955 psi | 90% | 3268 fps | 97.6% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 52,475 psi | 86% | 3281 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 98% | 55,013 psi | 90% | 3264 fps | 97.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 53,838 psi | 88% | 3176 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 54,143 psi | 89% | 3202 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 94% | 54,534 psi | 90% | 3291 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 88% | 51,996 psi | 85% | 3255 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 98% | 54,215 psi | 89% | 3255 fps | 97.6% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 51,445 psi | 84% | 3248 fps | 97.2% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 48,356 psi | 79% | 3182 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 42,047 psi | 69% | 3081 fps | 98.1% |
| Alliant Reloder-26 | <<locked>> | 98% | 51,938 psi | 85% | 3327 fps | 99.9% |
| Bofors RP15ᴾ | <<locked>> | 100% | 47,079 psi | 77% | 3159 fps | 96% |
| Bofors RP3 | <<locked>> | 86% | 54,708 psi | 90% | 3196 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 51,445 psi | 84% | 3248 fps | 97.2% |
| Bofors RP7 | <<locked>> | 90% | 54,447 psi | 89% | 3176 fps | 98.3% |
| Hodgdon H380 | <<locked>> | 84% | 51,634 psi | 85% | 3150 fps | 99.6% |
| Hodgdon H414 | <<locked>> | 90% | 52,518 psi | 86% | 3222 fps | 98.6% |
| Hodgdon H4350 | <<locked>> | 88% | 52,417 psi | 86% | 3179 fps | 97.4% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 54,752 psi | 90% | 3205 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 52,895 psi | 87% | 3196 fps | 100% |
| Hodgdon Superformance | <<locked>> | 90% | 52,649 psi | 86% | 3255 fps | 98.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,114 psi | 59% | 2024 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 53,722 psi | 88% | 3159 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 52,794 psi | 87% | 3136 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 82% | 52,141 psi | 86% | 3114 fps | 98.4% |
| IMR 4350 | <<locked>> | 92% | 52,025 psi | 85% | 3150 fps | 98% |
| IMR 4451 Enduron | <<locked>> | 88% | 52,779 psi | 87% | 3150 fps | 98.4% |
| IMR 4831 | <<locked>> | 94% | 54,172 psi | 89% | 3215 fps | 100% |
| IMR 4895 | <<locked>> | 82% | 52,040 psi | 85% | 3176 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 98% | 54,520 psi | 90% | 3186 fps | 95.8% |
| Lovex S060 | <<locked>> | 82% | 54,549 psi | 90% | 3127 fps | 100% |
| Lovex S062 | <<locked>> | 84% | 52,779 psi | 87% | 3127 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 52,678 psi | 86% | 3146 fps | 99.3% |
| Lovex S070 | <<locked>> | 92% | 53,722 psi | 88% | 3186 fps | 98.8% |
| Lovex S071ᴾ | <<locked>> | 100% | 42,279 psi | 69% | 2986 fps | 97.4% |
| Norma 201 | <<locked>> | 82% | 54,114 psi | 89% | 3143 fps | 100% |
| Norma 202 | <<locked>> | 82% | 54,911 psi | 90% | 3143 fps | 100% |
| Norma 203B | <<locked>> | 84% | 53,447 psi | 88% | 3186 fps | 100% |
| Norma 204 | <<locked>> | 92% | 52,489 psi | 86% | 3196 fps | 97% |
| Norma MRPᴾ | <<locked>> | 100% | 54,824 psi | 90% | 3346 fps | 99% |
| Norma URP | <<locked>> | 92% | 52,475 psi | 86% | 3209 fps | 99.8% |
| Ramshot Big Game | <<locked>> | 84% | 54,491 psi | 89% | 3215 fps | 100% |
| Ramshot Hunter | <<locked>> | 94% | 55,114 psi | 90% | 3268 fps | 99.4% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 44,773 psi | 74% | 3087 fps | 96.2% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,579 psi | 60% | 2070 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 51,793 psi | 85% | 3133 fps | 98.8% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 51,677 psi | 85% | 3255 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 53,592 psi | 88% | 3248 fps | 99.9% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 52,272 psi | 86% | 3278 fps | 99.8% |
| Rottweil R 902 | <<locked>> | 84% | 54,708 psi | 90% | 3143 fps | 100% |
| Rottweil R 903 | <<locked>> | 88% | 54,853 psi | 90% | 3192 fps | 100% |
| Rottweil R 904 | <<locked>> | 96% | 53,243 psi | 87% | 3176 fps | 96.1% |
| Rottweil R 905 | <<locked>> | 98% | 53,345 psi | 88% | 3235 fps | 97.5% |
| Rottweil R 907 | <<locked>> | 90% | 54,447 psi | 89% | 3176 fps | 98.3% |
| Shooters World Long Rifle | <<locked>> | 90% | 52,678 psi | 86% | 3146 fps | 99.3% |
| Shooters World Precision | <<locked>> | 84% | 52,779 psi | 87% | 3127 fps | 100% |
| Shooters World SW4350 | <<locked>> | 92% | 53,722 psi | 88% | 3186 fps | 98.8% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 53,011 psi | 87% | 3199 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 54,085 psi | 89% | 3173 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 55,042 psi | 90% | 3074 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 52,808 psi | 87% | 3025 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 52,417 psi | 86% | 3087 fps | 98.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 52,866 psi | 87% | 3232 fps | 97.4% |
| Somchem S335 | <<locked>> | 82% | 54,795 psi | 90% | 3068 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 54,810 psi | 90% | 3186 fps | 100% |
| Somchem S365 | <<locked>> | 94% | 51,663 psi | 85% | 3215 fps | 100% |
| Somchem S385 | <<locked>> | 98% | 54,085 psi | 89% | 3212 fps | 98.3% |
| Vihtavuori N135 | <<locked>> | 84% | 54,969 psi | 90% | 3100 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 52,098 psi | 86% | 3068 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 52,808 psi | 87% | 3107 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 54,636 psi | 90% | 3205 fps | 99.9% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 49,806 psi | 82% | 3117 fps | 97.2% |
| Vihtavuori N540 | <<locked>> | 84% | 53,766 psi | 88% | 3110 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 53,780 psi | 88% | 3209 fps | 99.8% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 53,940 psi | 89% | 3264 fps | 100% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 54,592 psi | 90% | 3169 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 52,518 psi | 86% | 3222 fps | 98.6% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 43,613 psi | 72% | 3232 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 82% | 54,085 psi | 89% | 3179 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 54,375 psi | 89% | 3202 fps | 97.5% |
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 2495 | <<locked>> | 80% | 48,602 psi | 80% | 3005 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 47,369 psi | 78% | 3002 fps | 96.7% |
| Accurate 3100 | <<locked>> | 90% | 35,969 psi | 59% | 2838 fps | 95.4% |
| Accurate 4064 | <<locked>> | 80% | 46,079 psi | 76% | 3009 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 34,766 psi | 57% | 2831 fps | 96.7% |
| Accurate High Country | <<locked>> | 96% | 48,907 psi | 80% | 3235 fps | 95.4% |
| ADI AR 2208 | <<locked>> | 80% | 44,208 psi | 73% | 2982 fps | 99.3% |
| ADI AR 2209 | <<locked>> | 92% | 45,049 psi | 74% | 3074 fps | 95.1% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 48,776 psi | 80% | 3212 fps | 99.8% |
| Alliant Power Pro Varmint | <<locked>> | 92% | 45,005 psi | 74% | 3071 fps | 95.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 44,382 psi | 73% | 3005 fps | 99.9% |
| Alliant Reloder-15 | <<locked>> | 80% | 47,471 psi | 78% | 3081 fps | 99.7% |
| Alliant Reloder-16 | 54.5 gr | 80% | 34,476 psi | 57% | 2854 fps | 96.9% |
| Alliant Reloder-17 | <<locked>> | 80% | 39,073 psi | 64% | 2995 fps | 99.4% |
| Alliant Reloder-19 | <<locked>> | 92% | 44,454 psi | 73% | 3061 fps | 95.2% |
| Alliant Reloder-22 | <<locked>> | 96% | 44,846 psi | 74% | 3114 fps | 95.5% |
| Alliant Reloder-23 | <<locked>> | 84% | 28,442 psi | 47% | 2687 fps | 95.9% |
| Alliant Reloder-25 | <<locked>> | 94% | 34,635 psi | 57% | 2884 fps | 95.3% |
| Alliant Reloder-26 | 64.6 gr | 86% | 32,866 psi | 54% | 2881 fps | 95.4% |
| Bofors RP15 | <<locked>> | 98% | 43,976 psi | 72% | 3094 fps | 95% |
| Bofors RP3 | <<locked>> | 80% | 44,396 psi | 73% | 3012 fps | 99.9% |
| Bofors RP5 | <<locked>> | 96% | 44,846 psi | 74% | 3114 fps | 95.5% |
| Bofors RP7 | <<locked>> | 82% | 42,032 psi | 69% | 2930 fps | 95.5% |
| Hodgdon H380 | <<locked>> | 80% | 44,962 psi | 74% | 3022 fps | 98.8% |
| Hodgdon H414 | <<locked>> | 82% | 39,740 psi | 65% | 2956 fps | 95.5% |
| Hodgdon H4350 | <<locked>> | 82% | 43,076 psi | 71% | 2989 fps | 95% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 31,792 psi | 52% | 2733 fps | 97.5% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 49,255 psi | 81% | 3133 fps | 100% |
| Hodgdon Superformance | <<locked>> | 84% | 41,989 psi | 69% | 3035 fps | 95.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,745 psi | 44% | 1808 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 50,546 psi | 83% | 3107 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 46,470 psi | 76% | 3022 fps | 99.7% |
| IMR 4166 Enduron | <<locked>> | 80% | 48,907 psi | 80% | 3051 fps | 97.8% |
| IMR 4350 | <<locked>> | 86% | 42,801 psi | 70% | 2966 fps | 95.8% |
| IMR 4451 Enduron | <<locked>> | 80% | 40,988 psi | 67% | 2907 fps | 95.7% |
| IMR 4831 | <<locked>> | 80% | 33,707 psi | 55% | 2785 fps | 96.4% |
| IMR 4895 | <<locked>> | 80% | 48,733 psi | 80% | 3114 fps | 99.9% |
| IMR 4955 Enduron | <<locked>> | 96% | 51,329 psi | 84% | 3130 fps | 95% |
| Lovex S060 | <<locked>> | 80% | 51,169 psi | 84% | 3068 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 46,456 psi | 76% | 3015 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 38,189 psi | 63% | 2844 fps | 96.4% |
| Lovex S070 | <<locked>> | 82% | 38,885 psi | 64% | 2877 fps | 95.4% |
| Lovex S071 | <<locked>> | 96% | 37,043 psi | 61% | 2864 fps | 95.8% |
| Norma 201 | <<locked>> | 80% | 50,705 psi | 83% | 3087 fps | 100% |
| Norma 202 | <<locked>> | 80% | 51,416 psi | 84% | 3087 fps | 100% |
| Norma 203B | <<locked>> | 80% | 46,833 psi | 77% | 3064 fps | 99.9% |
| Norma 204 | <<locked>> | 88% | 45,614 psi | 75% | 3064 fps | 95.2% |
| Norma MRP | 67.1 gr | 92% | 41,017 psi | 67% | 3064 fps | 95.8% |
| Norma URP | <<locked>> | 80% | 34,911 psi | 57% | 2835 fps | 96.6% |
| Ramshot Big Game | <<locked>> | 80% | 47,297 psi | 78% | 3091 fps | 99.8% |
| Ramshot Hunter | <<locked>> | 82% | 36,405 psi | 60% | 2881 fps | 95.3% |
| Ramshot Magnum | <<locked>> | 98% | 41,437 psi | 68% | 3012 fps | 95% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,209 psi | 45% | 1854 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 45,310 psi | 74% | 3005 fps | 97.6% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 41,626 psi | 68% | 3064 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 34,722 psi | 57% | 2851 fps | 96.3% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 34,084 psi | 56% | 2854 fps | 95.4% |
| Rottweil R 902 | <<locked>> | 80% | 48,196 psi | 79% | 3031 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 41,742 psi | 69% | 2953 fps | 99.7% |
| Rottweil R 904 | <<locked>> | 94% | 49,821 psi | 82% | 3114 fps | 95.3% |
| Rottweil R 905 | <<locked>> | 92% | 43,337 psi | 71% | 3038 fps | 95% |
| Rottweil R 907 | <<locked>> | 82% | 42,032 psi | 69% | 2930 fps | 95.5% |
| Shooters World Long Rifle | <<locked>> | 80% | 38,189 psi | 63% | 2844 fps | 96.4% |
| Shooters World Precision | <<locked>> | 80% | 46,456 psi | 76% | 3015 fps | 100% |
| Shooters World SW4350 | <<locked>> | 82% | 38,885 psi | 64% | 2877 fps | 95.4% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 43,250 psi | 71% | 3015 fps | 99.5% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 50,720 psi | 83% | 3117 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 51,764 psi | 85% | 3022 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 43,584 psi | 72% | 2871 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 40,147 psi | 66% | 2848 fps | 95.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 46,021 psi | 76% | 3100 fps | 95.8% |
| Somchem S335 | <<locked>> | 80% | 51,387 psi | 84% | 3015 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 42,250 psi | 69% | 2956 fps | 99.6% |
| Somchem S365 | <<locked>> | 80% | 31,328 psi | 51% | 2779 fps | 98.6% |
| Somchem S385 | <<locked>> | 90% | 41,147 psi | 68% | 2956 fps | 95.3% |
| Vihtavuori N135 | <<locked>> | 80% | 48,443 psi | 80% | 2999 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 48,776 psi | 80% | 3012 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 40,350 psi | 66% | 2881 fps | 99.9% |
| Vihtavuori N160 | <<locked>> | 80% | 36,318 psi | 60% | 2838 fps | 97.1% |
| Vihtavuori N165 | <<locked>> | 96% | 43,410 psi | 71% | 2992 fps | 95.6% |
| Vihtavuori N540 | <<locked>> | 80% | 47,065 psi | 77% | 3002 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 35,752 psi | 59% | 2835 fps | 96.7% |
| Vihtavuori N555 | <<locked>> | 84% | 31,198 psi | 51% | 2772 fps | 96% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 35,810 psi | 59% | 2808 fps | 99% |
| Winchester 760 | <<locked>> | 82% | 39,929 psi | 66% | 2959 fps | 95.6% |
| Winchester StaBALL HD | <<locked>> | 86% | 26,789 psi | 44% | 2713 fps | 95.6% |
| Winchester StaBALL Match | <<locked>> | 80% | 50,676 psi | 83% | 3120 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 47,195 psi | 77% | 3074 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 88 powders for 7 mm Blaser Mag. loaded with the .284 | 125gr | Hasler ARIETE. Norma MRP delivers the highest muzzle velocity at 3,346 fps; across all powders the maximum-charge window runs from 2,024 fps to 3,346 fps. Accurate 3100 gives the best case fill at 100 %, and 88 of the 88 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (420 MPa), the top charges use 59–90 %, leaving at least 10 % headroom. The 125.0 gr projectile in 0.284" calls for a 1:10.5 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, Alliant Reloder-16 rank at the top here: for 7 mm Blaser Mag. with the .284 | 125gr | Hasler ARIETE 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.