Load Specifications
Load data in caliber 7 mm Blaser Mag. with .284 | 140gr | Barnes TTSX 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% | 54,607 psi | 90% | 2995 fps | 99.1% |
| Accurate 3100 | <<locked>> | 98% | 53,432 psi | 88% | 3048 fps | 99.8% |
| Accurate 4064 | <<locked>> | 82% | 53,882 psi | 88% | 2976 fps | 100% |
| Accurate 4350 | <<locked>> | 88% | 51,648 psi | 85% | 3038 fps | 100% |
| Accurate MAGPRO | <<locked>> | 96% | 51,982 psi | 85% | 3130 fps | 96.1% |
| ADI AR 2208 | <<locked>> | 84% | 54,186 psi | 89% | 3015 fps | 100% |
| ADI AR 2209 | <<locked>> | 94% | 52,823 psi | 87% | 3087 fps | 98.3% |
| ADI AR 2213 | <<locked>> | 98% | 54,099 psi | 89% | 3143 fps | 97.5% |
| Alliant Power Pro Varmint | <<locked>> | 94% | 53,084 psi | 87% | 3087 fps | 98.4% |
| Alliant Power Pro Varmint | <<locked>> | 94% | 53,084 psi | 87% | 3087 fps | 98.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 55,114 psi | 90% | 3041 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 55,100 psi | 90% | 3061 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 90% | 52,692 psi | 87% | 3104 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 86% | 53,780 psi | 88% | 3120 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 94% | 52,402 psi | 86% | 3077 fps | 98.3% |
| Alliant Reloder-22 | <<locked>> | 98% | 53,359 psi | 88% | 3136 fps | 98.6% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 54,215 psi | 89% | 3120 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 46,775 psi | 77% | 3051 fps | 99.8% |
| Alliant Reloder-26 | <<locked>> | 96% | 54,273 psi | 89% | 3212 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 52,243 psi | 86% | 3117 fps | 98.3% |
| Bofors RP3 | <<locked>> | 82% | 52,301 psi | 86% | 2999 fps | 100% |
| Bofors RP5 | <<locked>> | 98% | 53,359 psi | 88% | 3136 fps | 98.6% |
| Bofors RP7 | <<locked>> | 86% | 51,764 psi | 85% | 2986 fps | 98.8% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 46,412 psi | 76% | 2986 fps | 96.6% |
| Hodgdon H380 | <<locked>> | 82% | 52,620 psi | 86% | 3018 fps | 100% |
| Hodgdon H414 | <<locked>> | 88% | 53,925 psi | 89% | 3097 fps | 99.5% |
| Hodgdon H4350 | <<locked>> | 86% | 53,461 psi | 88% | 3054 fps | 98.6% |
| Hodgdon H4831 | <<locked>> | 96% | 54,186 psi | 89% | 3084 fps | 96.9% |
| Hodgdon H4831 SC | <<locked>> | 96% | 53,113 psi | 87% | 3064 fps | 96.7% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 53,098 psi | 87% | 3022 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 45,832 psi | 75% | 3094 fps | 97.9% |
| Hodgdon Superformance | <<locked>> | 88% | 54,215 psi | 89% | 3133 fps | 99.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,347 psi | 60% | 1923 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 53,708 psi | 88% | 2999 fps | 100% |
| IMR 4350 | <<locked>> | 90% | 53,069 psi | 87% | 3025 fps | 99.1% |
| IMR 4451 Enduron | <<locked>> | 86% | 53,476 psi | 88% | 3018 fps | 99.3% |
| IMR 4831 | <<locked>> | 90% | 52,083 psi | 86% | 3028 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 52,286 psi | 86% | 3015 fps | 96.7% |
| IMR 7828 SSC | <<locked>> | 98% | 51,735 psi | 85% | 3114 fps | 97.2% |
| Lovex S062 | <<locked>> | 82% | 53,838 psi | 88% | 2989 fps | 100% |
| Lovex S065 | <<locked>> | 88% | 53,563 psi | 88% | 3012 fps | 99.9% |
| Lovex S070 | <<locked>> | 90% | 55,085 psi | 90% | 3061 fps | 99.6% |
| Lovex S071ᴾ | <<locked>> | 100% | 47,413 psi | 78% | 2943 fps | 99.3% |
| Norma 203B | <<locked>> | 82% | 54,404 psi | 89% | 3045 fps | 100% |
| Norma 204 | <<locked>> | 90% | 53,737 psi | 88% | 3077 fps | 98.3% |
| Norma MRP | <<locked>> | 96% | 52,997 psi | 87% | 3166 fps | 99.5% |
| Norma URP | <<locked>> | 90% | 54,114 psi | 89% | 3084 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 52,083 psi | 86% | 3130 fps | 97.6% |
| Ramshot Hunter | <<locked>> | 90% | 52,866 psi | 87% | 3081 fps | 99.8% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 50,125 psi | 82% | 3061 fps | 98.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,115 psi | 61% | 1972 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 52,678 psi | 86% | 3002 fps | 99.6% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 53,156 psi | 87% | 3114 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 51,561 psi | 85% | 3061 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 53,911 psi | 89% | 3153 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 45,876 psi | 75% | 3084 fps | 98.9% |
| Rottweil R 903 | <<locked>> | 84% | 52,417 psi | 86% | 2995 fps | 100% |
| Rottweil R 904 | <<locked>> | 94% | 54,360 psi | 89% | 3058 fps | 97.6% |
| Rottweil R 905 | <<locked>> | 94% | 51,590 psi | 85% | 3061 fps | 98.3% |
| Rottweil R 907 | <<locked>> | 86% | 51,764 psi | 85% | 2986 fps | 98.8% |
| Shooters World Long Rifle | <<locked>> | 88% | 53,563 psi | 88% | 3012 fps | 99.9% |
| Shooters World Precision | <<locked>> | 82% | 53,838 psi | 88% | 2989 fps | 100% |
| Shooters World SW4350 | <<locked>> | 90% | 55,085 psi | 90% | 3061 fps | 99.6% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 54,259 psi | 89% | 3061 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 53,316 psi | 88% | 2877 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 53,171 psi | 87% | 2963 fps | 99.4% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 54,781 psi | 90% | 3120 fps | 98.8% |
| Somchem S355 | <<locked>> | 84% | 52,547 psi | 86% | 2995 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 52,576 psi | 86% | 2989 fps | 96.5% |
| Somchem S365 | <<locked>> | 92% | 53,650 psi | 88% | 3081 fps | 100% |
| Somchem S385 | <<locked>> | 94% | 52,127 psi | 86% | 3035 fps | 98.9% |
| Vihtavuori N150 | <<locked>> | 86% | 53,766 psi | 88% | 2966 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 52,620 psi | 86% | 3022 fps | 100% |
| Vihtavuori N165 | <<locked>> | 98% | 51,605 psi | 85% | 3012 fps | 98.6% |
| Vihtavuori N540 | <<locked>> | 82% | 54,592 psi | 90% | 2969 fps | 100% |
| Vihtavuori N550 | <<locked>> | 90% | 55,114 psi | 90% | 3081 fps | 100% |
| Vihtavuori N555 | <<locked>> | 96% | 52,895 psi | 87% | 3091 fps | 100% |
| Vihtavuori N560 | <<locked>> | 96% | 53,229 psi | 87% | 3156 fps | 97.1% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 48,733 psi | 80% | 3054 fps | 96.3% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 52,199 psi | 86% | 2982 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 53,925 psi | 89% | 3097 fps | 99.5% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 50,111 psi | 82% | 3196 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 52,069 psi | 85% | 3028 fps | 98.2% |
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% | 51,213 psi | 84% | 2940 fps | 98.6% |
| Accurate 3100 | <<locked>> | 84% | 32,721 psi | 54% | 2625 fps | 95.5% |
| Accurate 4064 | <<locked>> | 80% | 50,459 psi | 83% | 2923 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 38,740 psi | 64% | 2792 fps | 98.9% |
| Accurate MAGPRO | <<locked>> | 94% | 48,283 psi | 79% | 3064 fps | 95.1% |
| ADI AR 2208 | <<locked>> | 80% | 47,819 psi | 79% | 2907 fps | 100% |
| ADI AR 2209 | <<locked>> | 86% | 40,335 psi | 66% | 2838 fps | 95.2% |
| ADI AR 2213 | <<locked>> | 94% | 47,239 psi | 78% | 3012 fps | 95.9% |
| Alliant Power Pro Varmint | <<locked>> | 86% | 40,669 psi | 67% | 2841 fps | 95.4% |
| Alliant Power Pro Varmint | <<locked>> | 86% | 40,669 psi | 67% | 2841 fps | 95.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 48,370 psi | 79% | 2930 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 51,634 psi | 85% | 3005 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 37,869 psi | 62% | 2808 fps | 99% |
| Alliant Reloder-17 | <<locked>> | 80% | 43,279 psi | 71% | 2940 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 86% | 40,248 psi | 66% | 2835 fps | 95.3% |
| Alliant Reloder-22 | <<locked>> | 90% | 40,408 psi | 66% | 2881 fps | 95.5% |
| Alliant Reloder-23 | <<locked>> | 80% | 27,528 psi | 45% | 2539 fps | 97% |
| Alliant Reloder-25 | <<locked>> | 88% | 31,430 psi | 52% | 2671 fps | 95.5% |
| Alliant Reloder-26 | 60.4 gr | 80% | 29,617 psi | 49% | 2657 fps | 95.5% |
| Bofors RP15 | <<locked>> | 92% | 40,059 psi | 66% | 2871 fps | 95.3% |
| Bofors RP3 | <<locked>> | 80% | 48,921 psi | 80% | 2943 fps | 100% |
| Bofors RP5 | <<locked>> | 90% | 40,408 psi | 66% | 2881 fps | 95.5% |
| Bofors RP7 | <<locked>> | 80% | 42,714 psi | 70% | 2812 fps | 97.1% |
| Hodgdon H1000 | <<locked>> | 98% | 43,105 psi | 71% | 2917 fps | 95.5% |
| Hodgdon H380 | <<locked>> | 80% | 49,255 psi | 81% | 2959 fps | 99.8% |
| Hodgdon H414 | <<locked>> | 80% | 40,973 psi | 67% | 2844 fps | 97.2% |
| Hodgdon H4350 | <<locked>> | 80% | 43,990 psi | 72% | 2874 fps | 96.7% |
| Hodgdon H4831 | <<locked>> | 92% | 47,239 psi | 78% | 2956 fps | 95.2% |
| Hodgdon H4831 SC | <<locked>> | 94% | 49,617 psi | 81% | 3002 fps | 95.8% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 35,317 psi | 58% | 2690 fps | 99.4% |
| Hodgdon Retumbo | <<locked>> | 96% | 39,943 psi | 66% | 2949 fps | 95.9% |
| Hodgdon Superformance | <<locked>> | 80% | 39,914 psi | 66% | 2854 fps | 96.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,151 psi | 45% | 1722 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 50,314 psi | 83% | 2943 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 38,363 psi | 63% | 2733 fps | 95.8% |
| IMR 4451 Enduron | <<locked>> | 80% | 44,353 psi | 73% | 2848 fps | 97.9% |
| IMR 4831 | <<locked>> | 80% | 37,362 psi | 61% | 2743 fps | 98.7% |
| IMR 4955 Enduron | <<locked>> | 90% | 45,977 psi | 75% | 2894 fps | 95% |
| IMR 7828 SSC | <<locked>> | 94% | 45,136 psi | 74% | 2982 fps | 95.4% |
| Lovex S062 | <<locked>> | 80% | 50,459 psi | 83% | 2936 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 41,597 psi | 68% | 2789 fps | 98.5% |
| Lovex S070 | <<locked>> | 80% | 39,798 psi | 65% | 2766 fps | 97.1% |
| Lovex S071 | <<locked>> | 88% | 31,749 psi | 52% | 2598 fps | 95.1% |
| Norma 203B | <<locked>> | 80% | 50,952 psi | 84% | 2989 fps | 100% |
| Norma 204 | <<locked>> | 82% | 40,698 psi | 67% | 2822 fps | 95.2% |
| Norma MRP | 63 gr | 86% | 37,028 psi | 61% | 2831 fps | 95.9% |
| Norma URP | <<locked>> | 80% | 38,595 psi | 63% | 2785 fps | 98.8% |
| Ramshot Grand | <<locked>> | 94% | 44,991 psi | 74% | 2992 fps | 95.7% |
| Ramshot Hunter | <<locked>> | 80% | 37,608 psi | 62% | 2776 fps | 97.1% |
| Ramshot Magnum | <<locked>> | 92% | 36,941 psi | 61% | 2782 fps | 95% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,717 psi | 46% | 1765 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 49,168 psi | 81% | 2940 fps | 99.2% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 46,035 psi | 76% | 2995 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 38,725 psi | 64% | 2812 fps | 98.7% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 37,565 psi | 62% | 2825 fps | 98.2% |
| ReloadSwiss RS 76 | <<locked>> | 94% | 36,883 psi | 61% | 2861 fps | 95.9% |
| Rottweil R 903 | <<locked>> | 80% | 45,803 psi | 75% | 2884 fps | 100% |
| Rottweil R 904 | <<locked>> | 88% | 44,788 psi | 74% | 2877 fps | 95.3% |
| Rottweil R 905 | <<locked>> | 86% | 39,204 psi | 64% | 2812 fps | 95.1% |
| Rottweil R 907 | <<locked>> | 80% | 42,714 psi | 70% | 2812 fps | 97.1% |
| Shooters World Long Rifle | <<locked>> | 80% | 41,597 psi | 68% | 2789 fps | 98.5% |
| Shooters World Precision | <<locked>> | 80% | 50,459 psi | 83% | 2936 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 39,798 psi | 65% | 2766 fps | 97.1% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 47,384 psi | 78% | 2946 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 47,123 psi | 77% | 2782 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 40,799 psi | 67% | 2733 fps | 97.2% |
| SNPE Vectan Tubal 8000 | <<locked>> | 86% | 38,841 psi | 64% | 2805 fps | 95% |
| Somchem S355 | <<locked>> | 80% | 46,079 psi | 76% | 2884 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 49,110 psi | 81% | 2930 fps | 95.7% |
| Somchem S365 | <<locked>> | 80% | 35,070 psi | 58% | 2740 fps | 99.9% |
| Somchem S385 | <<locked>> | 84% | 37,188 psi | 61% | 2733 fps | 95.4% |
| Vihtavuori N150 | <<locked>> | 80% | 44,048 psi | 72% | 2808 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 40,016 psi | 66% | 2785 fps | 99% |
| Vihtavuori N165 | <<locked>> | 90% | 39,363 psi | 65% | 2776 fps | 95.8% |
| Vihtavuori N540 | <<locked>> | 80% | 51,227 psi | 84% | 2917 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 39,581 psi | 65% | 2789 fps | 98.8% |
| Vihtavuori N555 | <<locked>> | 80% | 30,472 psi | 50% | 2618 fps | 97% |
| Vihtavuori N560 | 67.4 gr | 92% | 46,296 psi | 76% | 3022 fps | 95.3% |
| Vihtavuori N565 | <<locked>> | 98% | 45,266 psi | 74% | 2986 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 39,233 psi | 64% | 2753 fps | 99.9% |
| Winchester 760 | <<locked>> | 80% | 41,147 psi | 68% | 2851 fps | 97.3% |
| Winchester StaBALL HD | <<locked>> | 80% | 24,279 psi | 40% | 2503 fps | 95.7% |
| Winchester Supreme 780 | <<locked>> | 90% | 42,076 psi | 69% | 2838 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 83 powders for 7 mm Blaser Mag. loaded with the .284 | 140gr | Barnes TTSX BT. Alliant Reloder-26 delivers the highest muzzle velocity at 3,212 fps; across all powders the maximum-charge window runs from 1,923 fps to 3,212 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 140.0 gr projectile in 0.284" calls for a 1:10.0 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 | 140gr | Barnes TTSX 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.