Load Specifications
Load data in caliber 7 mm Blaser Mag. with .284 | 140gr | Barnes X S bullet and 72 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Winchester StaBALL HD, IMR 7828 SSC and Norma MRP.
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% | 53,388 psi | 88% | 3025 fps | 99.8% |
| Accurate 4350 | <<locked>> | 86% | 54,795 psi | 90% | 3068 fps | 100% |
| Accurate MAGPRO | <<locked>> | 94% | 54,549 psi | 90% | 3163 fps | 96.8% |
| ADI AR 2209 | <<locked>> | 92% | 54,476 psi | 89% | 3104 fps | 98.7% |
| ADI AR 2213 | <<locked>> | 94% | 52,315 psi | 86% | 3100 fps | 97.3% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 47,239 psi | 78% | 2986 fps | 96.2% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 42,235 psi | 69% | 2946 fps | 98.1% |
| Alliant Power Pro Varmint | <<locked>> | 92% | 54,665 psi | 90% | 3097 fps | 98.7% |
| Alliant Power Pro Varmint | <<locked>> | 92% | 54,665 psi | 90% | 3097 fps | 98.7% |
| Alliant Reloder-16 | <<locked>> | 88% | 54,317 psi | 89% | 3114 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 82% | 52,141 psi | 86% | 3077 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 92% | 54,056 psi | 89% | 3091 fps | 98.6% |
| Alliant Reloder-22 | <<locked>> | 94% | 52,315 psi | 86% | 3104 fps | 98.5% |
| Alliant Reloder-23 | <<locked>> | 96% | 53,214 psi | 87% | 3091 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 52,344 psi | 86% | 3136 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 92% | 53,098 psi | 87% | 3173 fps | 100% |
| Bofors RP15 | <<locked>> | 98% | 54,607 psi | 90% | 3143 fps | 98.7% |
| Bofors RP30ᴾ | <<locked>> | 100% | 48,588 psi | 80% | 3064 fps | 97.2% |
| Bofors RP5 | <<locked>> | 94% | 52,315 psi | 86% | 3104 fps | 98.5% |
| Bofors RP7 | <<locked>> | 84% | 53,548 psi | 88% | 2999 fps | 99.1% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 51,590 psi | 85% | 3074 fps | 97.9% |
| Hodgdon H414 | <<locked>> | 84% | 52,330 psi | 86% | 3054 fps | 99.4% |
| Hodgdon H4350 | <<locked>> | 84% | 54,868 psi | 90% | 3061 fps | 98.9% |
| Hodgdon H4831 | <<locked>> | 92% | 52,446 psi | 86% | 3038 fps | 96.6% |
| Hodgdon H4831 SC | <<locked>> | 94% | 54,766 psi | 90% | 3081 fps | 97.1% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 55,071 psi | 90% | 3035 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 51,358 psi | 84% | 3196 fps | 99.2% |
| Hodgdon Superformance | <<locked>> | 84% | 51,880 psi | 85% | 3081 fps | 99.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,159 psi | 61% | 1936 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 54,476 psi | 89% | 3035 fps | 99.3% |
| IMR 4451 Enduron | <<locked>> | 84% | 54,592 psi | 90% | 3022 fps | 99.5% |
| IMR 4831 | <<locked>> | 88% | 54,781 psi | 90% | 3054 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 53,824 psi | 88% | 3025 fps | 97.1% |
| IMR 7828 SSC | <<locked>> | 96% | 53,664 psi | 88% | 3136 fps | 97.7% |
| Lovex S065 | <<locked>> | 84% | 52,417 psi | 86% | 2976 fps | 99.8% |
| Lovex S070 | <<locked>> | 86% | 53,838 psi | 88% | 3022 fps | 99.6% |
| Lovex S071ᴾ | <<locked>> | 100% | 54,317 psi | 89% | 3041 fps | 99.9% |
| Norma 204 | <<locked>> | 86% | 51,938 psi | 85% | 3031 fps | 98.1% |
| Norma 217ᴾ | <<locked>> | 100% | 38,072 psi | 63% | 2877 fps | 96.2% |
| Norma MRP | <<locked>> | 92% | 51,909 psi | 85% | 3127 fps | 99.4% |
| Norma URP | <<locked>> | 86% | 52,823 psi | 87% | 3045 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 54,143 psi | 89% | 3156 fps | 98.1% |
| Ramshot Hunter | <<locked>> | 88% | 54,752 psi | 90% | 3097 fps | 99.9% |
| Ramshot Magnum | <<locked>> | 98% | 52,475 psi | 86% | 3087 fps | 99.1% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,058 psi | 62% | 1985 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 55,114 psi | 90% | 3123 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 54,186 psi | 89% | 3084 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 52,083 psi | 86% | 3107 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 51,837 psi | 85% | 3192 fps | 99.8% |
| Rottweil R 904 | <<locked>> | 90% | 52,591 psi | 86% | 3015 fps | 97.4% |
| Rottweil R 905 | <<locked>> | 92% | 53,664 psi | 88% | 3081 fps | 98.7% |
| Rottweil R 907 | <<locked>> | 84% | 53,548 psi | 88% | 2999 fps | 99.1% |
| Shooters World Long Rifle | <<locked>> | 84% | 52,417 psi | 86% | 2976 fps | 99.8% |
| Shooters World SW4350 | <<locked>> | 86% | 53,838 psi | 88% | 3022 fps | 99.6% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 54,534 psi | 90% | 2877 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 54,969 psi | 90% | 2976 fps | 99.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 53,214 psi | 87% | 3074 fps | 98.6% |
| Somchem S355 | <<locked>> | 82% | 54,592 psi | 90% | 3005 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 54,201 psi | 89% | 3002 fps | 96.9% |
| Somchem S365 | <<locked>> | 88% | 52,678 psi | 86% | 3048 fps | 100% |
| Somchem S385 | <<locked>> | 92% | 54,505 psi | 89% | 3058 fps | 99.3% |
| Vihtavuori N150 | <<locked>> | 82% | 52,388 psi | 86% | 2927 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 54,520 psi | 90% | 3035 fps | 100% |
| Vihtavuori N165 | <<locked>> | 96% | 53,795 psi | 88% | 3031 fps | 99% |
| Vihtavuori N550 | <<locked>> | 86% | 53,911 psi | 89% | 3041 fps | 100% |
| Vihtavuori N555 | <<locked>> | 92% | 52,620 psi | 86% | 3068 fps | 100% |
| Vihtavuori N560 | <<locked>> | 92% | 51,837 psi | 85% | 3114 fps | 96.8% |
| Vihtavuori N565 | <<locked>> | 98% | 51,909 psi | 85% | 3097 fps | 97.1% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 53,606 psi | 88% | 2986 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 52,533 psi | 86% | 3054 fps | 99.4% |
| Winchester StaBALL HD | <<locked>> | 98% | 53,403 psi | 88% | 3225 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 54,085 psi | 89% | 3048 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>> | 80% | 34,374 psi | 56% | 2638 fps | 96.3% |
| Accurate 4350 | <<locked>> | 80% | 45,136 psi | 74% | 2897 fps | 99.8% |
| Accurate MAGPRO | <<locked>> | 90% | 47,572 psi | 78% | 3031 fps | 95% |
| ADI AR 2209 | <<locked>> | 82% | 39,827 psi | 65% | 2805 fps | 95.1% |
| ADI AR 2213 | <<locked>> | 90% | 46,035 psi | 76% | 2972 fps | 95.6% |
| ADI AR 2217 | <<locked>> | 98% | 44,208 psi | 73% | 2920 fps | 95.2% |
| ADI AR 2225 | <<locked>> | 94% | 35,317 psi | 58% | 2762 fps | 95.4% |
| Alliant Power Pro Varmint | <<locked>> | 82% | 40,161 psi | 66% | 2812 fps | 95.3% |
| Alliant Power Pro Varmint | <<locked>> | 82% | 40,161 psi | 66% | 2812 fps | 95.3% |
| Alliant Reloder-16 | <<locked>> | 80% | 42,525 psi | 70% | 2894 fps | 99.7% |
| Alliant Reloder-17 | <<locked>> | 80% | 48,675 psi | 80% | 3018 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 82% | 39,798 psi | 65% | 2805 fps | 95.3% |
| Alliant Reloder-22 | <<locked>> | 86% | 40,509 psi | 67% | 2864 fps | 95.7% |
| Alliant Reloder-23 | <<locked>> | 80% | 32,401 psi | 53% | 2661 fps | 98.9% |
| Alliant Reloder-25 | <<locked>> | 82% | 30,472 psi | 50% | 2618 fps | 95.1% |
| Alliant Reloder-26 | <<locked>> | 80% | 35,186 psi | 58% | 2799 fps | 98.1% |
| Bofors RP15 | <<locked>> | 88% | 40,176 psi | 66% | 2854 fps | 95.4% |
| Bofors RP30 | <<locked>> | 96% | 42,917 psi | 70% | 2949 fps | 95.7% |
| Bofors RP5 | <<locked>> | 86% | 40,509 psi | 67% | 2864 fps | 95.7% |
| Bofors RP7 | <<locked>> | 80% | 47,529 psi | 78% | 2887 fps | 98.2% |
| Hodgdon H1000 | <<locked>> | 94% | 42,569 psi | 70% | 2887 fps | 95.4% |
| Hodgdon H414 | <<locked>> | 80% | 46,122 psi | 76% | 2936 fps | 98.5% |
| Hodgdon H4350 | <<locked>> | 80% | 48,486 psi | 80% | 2946 fps | 97.9% |
| Hodgdon H4831 | <<locked>> | 88% | 46,108 psi | 76% | 2917 fps | 95% |
| Hodgdon H4831 SC | <<locked>> | 90% | 48,138 psi | 79% | 2959 fps | 95.6% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 40,379 psi | 66% | 2776 fps | 99.9% |
| Hodgdon Retumbo | <<locked>> | 90% | 37,869 psi | 62% | 2874 fps | 95.1% |
| Hodgdon Superformance | <<locked>> | 80% | 45,237 psi | 74% | 2953 fps | 98.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,934 psi | 46% | 1732 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 42,989 psi | 71% | 2815 fps | 97.3% |
| IMR 4451 Enduron | <<locked>> | 80% | 48,530 psi | 80% | 2913 fps | 98.7% |
| IMR 4831 | <<locked>> | 80% | 42,743 psi | 70% | 2838 fps | 99.6% |
| IMR 4955 Enduron | <<locked>> | 88% | 47,601 psi | 78% | 2913 fps | 95.6% |
| IMR 7828 SSC | 64.4 gr | 90% | 44,295 psi | 73% | 2949 fps | 95.2% |
| Lovex S065 | <<locked>> | 80% | 46,601 psi | 77% | 2867 fps | 99.3% |
| Lovex S070 | <<locked>> | 80% | 45,150 psi | 74% | 2861 fps | 98.4% |
| Lovex S071 | <<locked>> | 82% | 31,778 psi | 52% | 2569 fps | 95.3% |
| Norma 204 | <<locked>> | 80% | 42,656 psi | 70% | 2848 fps | 95.9% |
| Norma 217 | <<locked>> | 98% | 35,868 psi | 59% | 2818 fps | 95.2% |
| Norma MRP | 59.5 gr | 80% | 35,027 psi | 57% | 2756 fps | 95.2% |
| Norma URP | <<locked>> | 80% | 43,932 psi | 72% | 2881 fps | 99.6% |
| Ramshot Grand | <<locked>> | 90% | 44,092 psi | 72% | 2956 fps | 95.6% |
| Ramshot Hunter | <<locked>> | 80% | 42,496 psi | 70% | 2864 fps | 98.5% |
| Ramshot Magnum | <<locked>> | 88% | 37,362 psi | 61% | 2776 fps | 95.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,616 psi | 47% | 1775 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 51,416 psi | 84% | 3068 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 44,469 psi | 73% | 2910 fps | 99.6% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 42,482 psi | 70% | 2920 fps | 99.3% |
| ReloadSwiss RS 76 | <<locked>> | 88% | 34,853 psi | 57% | 2782 fps | 95% |
| Rottweil R 904 | <<locked>> | 84% | 43,845 psi | 72% | 2841 fps | 95.2% |
| Rottweil R 905 | <<locked>> | 82% | 39,305 psi | 65% | 2792 fps | 95.3% |
| Rottweil R 907 | <<locked>> | 80% | 47,529 psi | 78% | 2887 fps | 98.2% |
| Shooters World Long Rifle | <<locked>> | 80% | 46,601 psi | 77% | 2867 fps | 99.3% |
| Shooters World SW4350 | <<locked>> | 80% | 45,150 psi | 74% | 2861 fps | 98.4% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 51,532 psi | 85% | 2835 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 45,745 psi | 75% | 2812 fps | 98.4% |
| SNPE Vectan Tubal 8000 | <<locked>> | 82% | 38,972 psi | 64% | 2785 fps | 95.1% |
| Somchem S355 | <<locked>> | 80% | 51,401 psi | 84% | 2956 fps | 100% |
| Somchem S361 | <<locked>> | 86% | 47,848 psi | 79% | 2890 fps | 95.4% |
| Somchem S365 | <<locked>> | 80% | 40,843 psi | 67% | 2841 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 37,710 psi | 62% | 2720 fps | 95.7% |
| Vihtavuori N150 | <<locked>> | 80% | 49,327 psi | 81% | 2877 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 45,179 psi | 74% | 2871 fps | 99.7% |
| Vihtavuori N165 | <<locked>> | 84% | 36,912 psi | 61% | 2697 fps | 95% |
| Vihtavuori N550 | <<locked>> | 80% | 44,701 psi | 73% | 2874 fps | 99.6% |
| Vihtavuori N555 | <<locked>> | 80% | 36,535 psi | 60% | 2749 fps | 98.9% |
| Vihtavuori N560 | <<locked>> | 88% | 45,469 psi | 75% | 2986 fps | 95.1% |
| Vihtavuori N565 | <<locked>> | 94% | 45,672 psi | 75% | 2976 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 43,918 psi | 72% | 2828 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 46,122 psi | 76% | 2936 fps | 98.5% |
| Winchester StaBALL HD | 58.8 gr | 80% | 29,182 psi | 48% | 2674 fps | 99% |
| Winchester Supreme 780 | <<locked>> | 84% | 39,001 psi | 64% | 2753 fps | 95% |
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 72 powders for 7 mm Blaser Mag. loaded with the .284 | 140gr | Barnes X S. Winchester StaBALL HD delivers the highest muzzle velocity at 3,225 fps; across all powders the maximum-charge window runs from 1,936 fps to 3,225 fps. ADI AR 2217 gives the best case fill at 100 %, and 72 of the 72 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 140.0 gr projectile in 0.284" calls for a 1:10.5 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, IMR 7828 SSC, Norma MRP rank at the top here: for 7 mm Blaser Mag. with the .284 | 140gr | Barnes X S 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.