Load Specifications
Load data in caliber 7 mm Blaser Mag. with .284 | 139gr | Barnes LRX BT bullet and 83 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 Alliant Reloder-26.
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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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 2700 | <<locked>> | 82% | 54,346 psi | 89% | 2999 fps | 99% |
| Accurate 3100 | <<locked>> | 98% | 52,576 psi | 86% | 3041 fps | 99.7% |
| Accurate 4064 | <<locked>> | 82% | 53,287 psi | 87% | 2976 fps | 100% |
| Accurate 4350 | <<locked>> | 90% | 54,708 psi | 90% | 3097 fps | 100% |
| ADI AR 2208 | <<locked>> | 84% | 53,635 psi | 88% | 3015 fps | 100% |
| ADI AR 2209 | <<locked>> | 94% | 52,286 psi | 86% | 3087 fps | 98.1% |
| ADI AR 2213 | <<locked>> | 98% | 53,577 psi | 88% | 3140 fps | 97.3% |
| Alliant Power Pro Varmint | <<locked>> | 94% | 52,562 psi | 86% | 3087 fps | 98.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 54,520 psi | 90% | 3038 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 54,766 psi | 90% | 3064 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 90% | 52,083 psi | 86% | 3100 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 86% | 53,142 psi | 87% | 3123 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 94% | 51,851 psi | 85% | 3077 fps | 98.1% |
| Alliant Reloder-22 | <<locked>> | 98% | 52,750 psi | 87% | 3136 fps | 98.4% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 53,287 psi | 87% | 3117 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 46,253 psi | 76% | 3048 fps | 99.7% |
| Alliant Reloder-26 | <<locked>> | 96% | 53,592 psi | 88% | 3209 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 51,692 psi | 85% | 3117 fps | 98.2% |
| Bofors RP3 | <<locked>> | 82% | 51,735 psi | 85% | 2999 fps | 100% |
| Bofors RP5 | <<locked>> | 98% | 52,750 psi | 87% | 3136 fps | 98.4% |
| Bofors RP7 | <<locked>> | 88% | 54,679 psi | 90% | 3041 fps | 99.1% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 45,730 psi | 75% | 2979 fps | 96.2% |
| Hodgdon H380 | <<locked>> | 82% | 52,040 psi | 85% | 3015 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 88% | 53,359 psi | 88% | 3094 fps | 99.4% |
| Hodgdon H4350 | <<locked>> | 86% | 52,910 psi | 87% | 3051 fps | 98.5% |
| Hodgdon H4831 | <<locked>> | 96% | 53,621 psi | 88% | 3081 fps | 96.7% |
| Hodgdon H4831 SC | <<locked>> | 96% | 52,605 psi | 86% | 3064 fps | 96.4% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 52,489 psi | 86% | 3025 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 45,150 psi | 74% | 3084 fps | 97.6% |
| Hodgdon Superformance | <<locked>> | 88% | 53,388 psi | 88% | 3127 fps | 99.3% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,332 psi | 60% | 1929 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 53,171 psi | 87% | 2999 fps | 100% |
| IMR 4350 | <<locked>> | 90% | 52,562 psi | 86% | 3025 fps | 98.9% |
| IMR 4451 Enduron | <<locked>> | 86% | 52,953 psi | 87% | 3015 fps | 99.2% |
| IMR 4831 | <<locked>> | 92% | 55,085 psi | 90% | 3087 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 51,822 psi | 85% | 3012 fps | 96.4% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 54,592 psi | 90% | 3173 fps | 97.6% |
| Lovex S062 | <<locked>> | 82% | 53,258 psi | 87% | 2989 fps | 100% |
| Lovex S065 | <<locked>> | 88% | 53,084 psi | 87% | 3012 fps | 99.8% |
| Lovex S070 | <<locked>> | 90% | 54,549 psi | 90% | 3058 fps | 99.5% |
| Lovex S071ᴾ | <<locked>> | 100% | 46,601 psi | 77% | 2940 fps | 99.1% |
| Norma 203B | <<locked>> | 82% | 54,070 psi | 89% | 3048 fps | 100% |
| Norma 204 | <<locked>> | 90% | 53,200 psi | 87% | 3077 fps | 98.1% |
| Norma MRP | <<locked>> | 96% | 52,402 psi | 86% | 3163 fps | 99.4% |
| Norma URP | <<locked>> | 90% | 53,519 psi | 88% | 3081 fps | 100% |
| Ramshot Big Game | <<locked>> | 82% | 54,926 psi | 90% | 3074 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 51,271 psi | 84% | 3123 fps | 97.3% |
| Ramshot Hunter | <<locked>> | 90% | 52,315 psi | 86% | 3081 fps | 99.7% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 49,313 psi | 81% | 3054 fps | 98.5% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,101 psi | 61% | 1975 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 52,141 psi | 86% | 3002 fps | 99.5% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 52,504 psi | 86% | 3110 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 54,824 psi | 90% | 3123 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 53,316 psi | 88% | 3150 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 45,397 psi | 75% | 3081 fps | 98.7% |
| Rottweil R 902 | <<locked>> | 82% | 55,042 psi | 90% | 3002 fps | 100% |
| Rottweil R 903 | <<locked>> | 84% | 51,851 psi | 85% | 2995 fps | 100% |
| Rottweil R 904 | <<locked>> | 94% | 53,795 psi | 88% | 3054 fps | 97.4% |
| Rottweil R 905 | <<locked>> | 96% | 54,346 psi | 89% | 3117 fps | 98.6% |
| Rottweil R 907 | <<locked>> | 88% | 54,679 psi | 90% | 3041 fps | 99.1% |
| Shooters World Long Rifle | <<locked>> | 88% | 53,084 psi | 87% | 3012 fps | 99.8% |
| Shooters World Precision | <<locked>> | 82% | 53,258 psi | 87% | 2989 fps | 100% |
| Shooters World SW4350 | <<locked>> | 90% | 54,549 psi | 90% | 3058 fps | 99.5% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 53,679 psi | 88% | 3061 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 52,997 psi | 87% | 2884 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 52,678 psi | 86% | 2963 fps | 99.2% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 53,882 psi | 88% | 3110 fps | 98.6% |
| Somchem S355 | <<locked>> | 84% | 51,996 psi | 85% | 2995 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 51,837 psi | 85% | 2986 fps | 96.2% |
| Somchem S365 | <<locked>> | 92% | 52,982 psi | 87% | 3084 fps | 100% |
| Somchem S385 | <<locked>> | 96% | 55,100 psi | 90% | 3091 fps | 99.2% |
| Vihtavuori N150 | <<locked>> | 86% | 53,200 psi | 87% | 2969 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 52,054 psi | 85% | 3022 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 54,375 psi | 89% | 3064 fps | 98.9% |
| Vihtavuori N540 | <<locked>> | 82% | 54,041 psi | 89% | 2969 fps | 100% |
| Vihtavuori N550 | <<locked>> | 90% | 54,563 psi | 90% | 3081 fps | 100% |
| Vihtavuori N555 | <<locked>> | 96% | 52,011 psi | 85% | 3087 fps | 100% |
| Vihtavuori N560 | <<locked>> | 96% | 52,634 psi | 86% | 3153 fps | 96.8% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 47,921 psi | 79% | 3048 fps | 96% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 51,445 psi | 84% | 2982 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 53,359 psi | 88% | 3094 fps | 99.4% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 49,066 psi | 81% | 3189 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 51,561 psi | 85% | 3025 fps | 98% |
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% | 50,720 psi | 83% | 2936 fps | 98.5% |
| Accurate 3100 | <<locked>> | 84% | 32,256 psi | 53% | 2621 fps | 95.2% |
| Accurate 4064 | <<locked>> | 80% | 50,111 psi | 82% | 2927 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 38,377 psi | 63% | 2789 fps | 98.7% |
| ADI AR 2208 | <<locked>> | 80% | 47,326 psi | 78% | 2907 fps | 100% |
| ADI AR 2209 | <<locked>> | 88% | 42,670 psi | 70% | 2897 fps | 95.8% |
| ADI AR 2213 | <<locked>> | 94% | 46,746 psi | 77% | 3009 fps | 95.6% |
| Alliant Power Pro Varmint | <<locked>> | 86% | 40,190 psi | 66% | 2838 fps | 95.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 48,051 psi | 79% | 2933 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 51,300 psi | 84% | 3009 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 37,376 psi | 61% | 2805 fps | 98.9% |
| Alliant Reloder-17 | <<locked>> | 80% | 42,728 psi | 70% | 2940 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 86% | 39,769 psi | 65% | 2831 fps | 95% |
| Alliant Reloder-22 | <<locked>> | 90% | 39,929 psi | 66% | 2877 fps | 95.2% |
| Alliant Reloder-23 | <<locked>> | 80% | 27,282 psi | 45% | 2536 fps | 96.7% |
| Alliant Reloder-25 | <<locked>> | 88% | 31,038 psi | 51% | 2664 fps | 95.1% |
| Alliant Reloder-26 | 60.1 gr | 80% | 29,240 psi | 48% | 2651 fps | 95.1% |
| Bofors RP15 | <<locked>> | 94% | 42,148 psi | 69% | 2927 fps | 95.8% |
| Bofors RP3 | <<locked>> | 80% | 48,327 psi | 79% | 2943 fps | 100% |
| Bofors RP5 | <<locked>> | 90% | 39,929 psi | 66% | 2877 fps | 95.2% |
| Bofors RP7 | <<locked>> | 80% | 42,250 psi | 69% | 2808 fps | 96.9% |
| Hodgdon H1000 | <<locked>> | 98% | 42,670 psi | 70% | 2910 fps | 95.2% |
| Hodgdon H380 | <<locked>> | 80% | 48,704 psi | 80% | 2959 fps | 99.8% |
| Hodgdon H414 | <<locked>> | 80% | 40,451 psi | 66% | 2844 fps | 97% |
| Hodgdon H4350 | <<locked>> | 80% | 43,468 psi | 71% | 2871 fps | 96.5% |
| Hodgdon H4831 | <<locked>> | 94% | 50,067 psi | 82% | 3018 fps | 95.8% |
| Hodgdon H4831 SC | <<locked>> | 94% | 49,110 psi | 81% | 2999 fps | 95.6% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 34,998 psi | 57% | 2690 fps | 99.3% |
| Hodgdon Retumbo | <<locked>> | 96% | 39,479 psi | 65% | 2943 fps | 95.5% |
| Hodgdon Superformance | <<locked>> | 80% | 39,436 psi | 65% | 2851 fps | 96.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,108 psi | 45% | 1726 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 49,792 psi | 82% | 2940 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 38,087 psi | 63% | 2733 fps | 95.6% |
| IMR 4451 Enduron | <<locked>> | 80% | 43,859 psi | 72% | 2844 fps | 97.7% |
| IMR 4831 | <<locked>> | 80% | 36,869 psi | 61% | 2740 fps | 98.5% |
| IMR 4955 Enduron | <<locked>> | 92% | 48,573 psi | 80% | 2949 fps | 95.6% |
| IMR 7828 SSC | <<locked>> | 94% | 44,440 psi | 73% | 2976 fps | 95% |
| Lovex S062 | <<locked>> | 80% | 50,125 psi | 82% | 2940 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 41,321 psi | 68% | 2789 fps | 98.3% |
| Lovex S070 | <<locked>> | 80% | 39,523 psi | 65% | 2769 fps | 96.9% |
| Lovex S071 | <<locked>> | 90% | 33,431 psi | 55% | 2651 fps | 95.7% |
| Norma 203B | <<locked>> | 80% | 50,633 psi | 83% | 2992 fps | 100% |
| Norma 204 | <<locked>> | 84% | 43,265 psi | 71% | 2887 fps | 95.9% |
| Norma MRP | 62.7 gr | 86% | 36,564 psi | 60% | 2828 fps | 95.6% |
| Norma URP | <<locked>> | 80% | 38,290 psi | 63% | 2789 fps | 98.6% |
| Ramshot Big Game | <<locked>> | 80% | 51,198 psi | 84% | 3015 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 44,251 psi | 73% | 2982 fps | 95.3% |
| Ramshot Hunter | <<locked>> | 80% | 37,115 psi | 61% | 2772 fps | 96.9% |
| Ramshot Magnum | <<locked>> | 94% | 39,392 psi | 65% | 2851 fps | 95.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,644 psi | 45% | 1768 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 48,675 psi | 80% | 2940 fps | 99.1% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 45,426 psi | 75% | 2995 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 38,218 psi | 63% | 2808 fps | 98.5% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 37,101 psi | 61% | 2818 fps | 98% |
| ReloadSwiss RS 76 | <<locked>> | 94% | 36,318 psi | 60% | 2851 fps | 95.4% |
| Rottweil R 902 | <<locked>> | 80% | 51,822 psi | 85% | 2949 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 45,469 psi | 75% | 2887 fps | 100% |
| Rottweil R 904 | <<locked>> | 88% | 44,309 psi | 73% | 2877 fps | 95.1% |
| Rottweil R 905 | <<locked>> | 88% | 41,495 psi | 68% | 2871 fps | 95.8% |
| Rottweil R 907 | <<locked>> | 80% | 42,250 psi | 69% | 2808 fps | 96.9% |
| Shooters World Long Rifle | <<locked>> | 80% | 41,321 psi | 68% | 2789 fps | 98.3% |
| Shooters World Precision | <<locked>> | 80% | 50,125 psi | 82% | 2940 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 39,523 psi | 65% | 2769 fps | 96.9% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 46,862 psi | 77% | 2946 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 46,601 psi | 77% | 2782 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 40,393 psi | 66% | 2730 fps | 97% |
| SNPE Vectan Tubal 8000 | <<locked>> | 88% | 41,104 psi | 67% | 2864 fps | 95.7% |
| Somchem S355 | <<locked>> | 80% | 45,774 psi | 75% | 2887 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 48,631 psi | 80% | 2927 fps | 95.4% |
| Somchem S365 | <<locked>> | 80% | 34,737 psi | 57% | 2740 fps | 99.9% |
| Somchem S385 | <<locked>> | 84% | 36,724 psi | 60% | 2730 fps | 95.1% |
| Vihtavuori N150 | <<locked>> | 80% | 43,758 psi | 72% | 2808 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 39,711 psi | 65% | 2789 fps | 98.9% |
| Vihtavuori N165 | <<locked>> | 90% | 38,899 psi | 64% | 2769 fps | 95.5% |
| Vihtavuori N540 | <<locked>> | 80% | 50,676 psi | 83% | 2917 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 39,073 psi | 64% | 2785 fps | 98.6% |
| Vihtavuori N555 | <<locked>> | 80% | 30,168 psi | 50% | 2618 fps | 96.8% |
| Vihtavuori N560 | 68.5 gr | 94% | 48,936 psi | 80% | 3084 fps | 95.9% |
| Vihtavuori N565 | <<locked>> | 98% | 44,744 psi | 73% | 2982 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 38,783 psi | 64% | 2753 fps | 99.9% |
| Winchester 760 | <<locked>> | 80% | 40,625 psi | 67% | 2848 fps | 97% |
| Winchester StaBALL HD | <<locked>> | 80% | 23,946 psi | 39% | 2497 fps | 95.2% |
| Winchester Supreme 780 | <<locked>> | 90% | 41,597 psi | 68% | 2835 fps | 95.6% |
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 83 powders for 7 mm Blaser Mag. loaded with the .284 | 139gr | Barnes LRX BT. Alliant Reloder-26 delivers the highest muzzle velocity at 3,209 fps; across all powders the maximum-charge window runs from 1,929 fps to 3,209 fps. Alliant Reloder-23 gives the best case fill at 100 %, and 83 of the 83 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 139.0 gr projectile in 0.284" calls for a 1:9.5 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, Alliant Reloder-26 rank at the top here: for 7 mm Blaser Mag. with the .284 | 139gr | Barnes LRX 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.