Load Specifications
Load data in caliber 7 mm Blaser Mag. with .284 | 130gr | Barnes X BT bullet and 74 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Norma MRP, Alliant Reloder-26 and Accurate High Country.
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>> | 96% | 52,460 psi | 86% | 3104 fps | 99.4% |
| Accurate 4350 | <<locked>> | 88% | 54,085 psi | 89% | 3156 fps | 100% |
| Accurate High Country | <<locked>> | 94% | 52,736 psi | 87% | 3241 fps | 96.8% |
| ADI AR 2208 | <<locked>> | 82% | 52,301 psi | 86% | 3064 fps | 100% |
| ADI AR 2209 | <<locked>> | 94% | 54,172 psi | 89% | 3189 fps | 97.9% |
| ADI AR 2213 | <<locked>> | 96% | 51,996 psi | 85% | 3176 fps | 96.1% |
| Alliant Power Pro Varmint | <<locked>> | 94% | 54,273 psi | 89% | 3186 fps | 97.9% |
| Alliant Power Pro Varmint | <<locked>> | 94% | 54,273 psi | 89% | 3186 fps | 97.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 53,621 psi | 88% | 3097 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 90% | 53,983 psi | 89% | 3209 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 84% | 51,488 psi | 85% | 3173 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 94% | 53,592 psi | 88% | 3176 fps | 97.8% |
| Alliant Reloder-22 | <<locked>> | 98% | 54,853 psi | 90% | 3245 fps | 98.2% |
| Alliant Reloder-23 | <<locked>> | 98% | 52,025 psi | 85% | 3176 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 48,573 psi | 80% | 3159 fps | 99.6% |
| Alliant Reloder-26 | <<locked>> | 94% | 52,127 psi | 86% | 3261 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 53,838 psi | 88% | 3222 fps | 97.9% |
| Bofors RP3 | <<locked>> | 82% | 54,665 psi | 90% | 3117 fps | 100% |
| Bofors RP5 | <<locked>> | 98% | 54,853 psi | 90% | 3245 fps | 98.2% |
| Bofors RP7 | <<locked>> | 86% | 53,737 psi | 88% | 3094 fps | 98.6% |
| Hodgdon H380 | <<locked>> | 82% | 54,752 psi | 90% | 3130 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 86% | 52,040 psi | 85% | 3143 fps | 98.8% |
| Hodgdon H4350 | <<locked>> | 86% | 54,839 psi | 90% | 3153 fps | 98.2% |
| Hodgdon H4831 SC | <<locked>> | 96% | 54,447 psi | 89% | 3159 fps | 96% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 54,462 psi | 89% | 3127 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 47,442 psi | 78% | 3196 fps | 97.4% |
| Hodgdon Superformance | <<locked>> | 86% | 51,648 psi | 85% | 3169 fps | 98.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,941 psi | 61% | 1995 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 55,100 psi | 90% | 3104 fps | 100% |
| IMR 4350 | <<locked>> | 90% | 54,505 psi | 89% | 3127 fps | 98.7% |
| IMR 4451 Enduron | <<locked>> | 86% | 54,810 psi | 90% | 3117 fps | 99% |
| IMR 4831 | <<locked>> | 90% | 54,201 psi | 89% | 3143 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 53,621 psi | 88% | 3107 fps | 96.1% |
| IMR 7828 SSC | <<locked>> | 98% | 52,910 psi | 87% | 3209 fps | 96.5% |
| Lovex S065 | <<locked>> | 86% | 52,417 psi | 86% | 3068 fps | 99.5% |
| Lovex S070 | <<locked>> | 88% | 53,621 psi | 88% | 3110 fps | 99.1% |
| Lovex S071ᴾ | <<locked>> | 100% | 50,111 psi | 82% | 3064 fps | 99.2% |
| Norma 204 | <<locked>> | 88% | 51,590 psi | 85% | 3117 fps | 97.2% |
| Norma MRP | <<locked>> | 96% | 54,578 psi | 90% | 3271 fps | 99.2% |
| Norma URP | <<locked>> | 88% | 52,243 psi | 86% | 3133 fps | 99.9% |
| Ramshot Grand | <<locked>> | 98% | 53,359 psi | 88% | 3225 fps | 97% |
| Ramshot Hunter | <<locked>> | 90% | 54,447 psi | 89% | 3186 fps | 99.6% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 51,619 psi | 85% | 3163 fps | 98.3% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,623 psi | 62% | 2041 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 54,215 psi | 89% | 3104 fps | 99.3% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 54,491 psi | 89% | 3222 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 53,606 psi | 88% | 3176 fps | 99.9% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 55,042 psi | 90% | 3255 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 47,892 psi | 79% | 3192 fps | 98.5% |
| Rottweil R 903 | <<locked>> | 84% | 54,998 psi | 90% | 3117 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 52,402 psi | 86% | 3097 fps | 96.4% |
| Rottweil R 905 | <<locked>> | 94% | 53,026 psi | 87% | 3163 fps | 97.9% |
| Rottweil R 907 | <<locked>> | 86% | 53,737 psi | 88% | 3094 fps | 98.6% |
| Shooters World Long Rifle | <<locked>> | 86% | 52,417 psi | 86% | 3068 fps | 99.5% |
| Shooters World SW4350 | <<locked>> | 88% | 53,621 psi | 88% | 3110 fps | 99.1% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 52,315 psi | 86% | 3114 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 54,897 psi | 90% | 2982 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 51,706 psi | 85% | 3009 fps | 98.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 52,576 psi | 86% | 3159 fps | 97.8% |
| Somchem S355 | <<locked>> | 84% | 54,534 psi | 90% | 3104 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 53,954 psi | 89% | 3084 fps | 95.9% |
| Somchem S365 | <<locked>> | 90% | 51,953 psi | 85% | 3143 fps | 100% |
| Somchem S385 | <<locked>> | 94% | 54,172 psi | 89% | 3143 fps | 98.7% |
| Vihtavuori N150 | <<locked>> | 84% | 52,388 psi | 86% | 3025 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 54,099 psi | 89% | 3127 fps | 100% |
| Vihtavuori N165 | <<locked>> | 98% | 53,055 psi | 87% | 3107 fps | 98.2% |
| Vihtavuori N550 | <<locked>> | 88% | 53,635 psi | 88% | 3133 fps | 99.9% |
| Vihtavuori N555 | <<locked>> | 96% | 55,027 psi | 90% | 3209 fps | 100% |
| Vihtavuori N560 | <<locked>> | 96% | 54,621 psi | 90% | 3258 fps | 96.5% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 50,894 psi | 84% | 3166 fps | 95.9% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 53,359 psi | 88% | 3081 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 52,228 psi | 86% | 3146 fps | 98.8% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 51,053 psi | 84% | 3307 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 53,722 psi | 88% | 3130 fps | 97.8% |
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% | 33,750 psi | 55% | 2707 fps | 95% |
| Accurate 4350 | <<locked>> | 80% | 41,872 psi | 69% | 2927 fps | 98.9% |
| Accurate High Country | 66 gr | 90% | 46,282 psi | 76% | 3114 fps | 95.1% |
| ADI AR 2208 | <<locked>> | 80% | 49,255 psi | 81% | 3009 fps | 99.9% |
| ADI AR 2209 | <<locked>> | 88% | 44,860 psi | 74% | 3005 fps | 95.7% |
| ADI AR 2213 | <<locked>> | 94% | 48,878 psi | 80% | 3114 fps | 95.3% |
| Alliant Power Pro Varmint | <<locked>> | 86% | 42,351 psi | 70% | 2946 fps | 95% |
| Alliant Power Pro Varmint | <<locked>> | 86% | 42,351 psi | 70% | 2946 fps | 95% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 50,459 psi | 83% | 3045 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 39,610 psi | 65% | 2917 fps | 98.8% |
| Alliant Reloder-17 | <<locked>> | 80% | 44,918 psi | 74% | 3051 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 88% | 44,599 psi | 73% | 2999 fps | 95.7% |
| Alliant Reloder-22 | <<locked>> | 90% | 42,525 psi | 70% | 2995 fps | 95.3% |
| Alliant Reloder-23 | <<locked>> | 80% | 30,182 psi | 50% | 2674 fps | 97.4% |
| Alliant Reloder-25 | <<locked>> | 88% | 33,866 psi | 56% | 2795 fps | 95.6% |
| Alliant Reloder-26 | 60.4 gr | 80% | 32,314 psi | 53% | 2799 fps | 95.8% |
| Bofors RP15 | <<locked>> | 94% | 44,643 psi | 73% | 3041 fps | 95.8% |
| Bofors RP3 | <<locked>> | 80% | 51,401 psi | 84% | 3061 fps | 100% |
| Bofors RP5 | <<locked>> | 90% | 42,525 psi | 70% | 2995 fps | 95.3% |
| Bofors RP7 | <<locked>> | 80% | 44,976 psi | 74% | 2923 fps | 96.9% |
| Hodgdon H380 | <<locked>> | 80% | 51,329 psi | 84% | 3071 fps | 99.7% |
| Hodgdon H414 | <<locked>> | 80% | 43,018 psi | 71% | 2959 fps | 97% |
| Hodgdon H4350 | <<locked>> | 80% | 45,513 psi | 75% | 2972 fps | 96.3% |
| Hodgdon H4831 SC | <<locked>> | 94% | 51,126 psi | 84% | 3100 fps | 95.2% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 37,594 psi | 62% | 2808 fps | 99.3% |
| Hodgdon Retumbo | <<locked>> | 96% | 41,989 psi | 69% | 3061 fps | 95.5% |
| Hodgdon Superformance | <<locked>> | 80% | 41,930 psi | 69% | 2969 fps | 96.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,644 psi | 45% | 1785 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 51,822 psi | 85% | 3045 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 40,306 psi | 66% | 2841 fps | 95.6% |
| IMR 4451 Enduron | <<locked>> | 80% | 45,803 psi | 75% | 2946 fps | 97.5% |
| IMR 4831 | <<locked>> | 80% | 39,740 psi | 65% | 2861 fps | 98.6% |
| IMR 4955 Enduron | <<locked>> | 92% | 50,546 psi | 83% | 3054 fps | 95.3% |
| IMR 7828 SSC | <<locked>> | 96% | 49,705 psi | 82% | 3143 fps | 95.6% |
| Lovex S065 | <<locked>> | 80% | 44,048 psi | 72% | 2907 fps | 98.3% |
| Lovex S070 | <<locked>> | 80% | 42,395 psi | 70% | 2887 fps | 97% |
| Lovex S071 | <<locked>> | 88% | 35,157 psi | 58% | 2743 fps | 95.6% |
| Norma 204 | <<locked>> | 84% | 45,310 psi | 74% | 2992 fps | 95.7% |
| Norma MRP | 63 gr | 86% | 39,146 psi | 64% | 2949 fps | 95.7% |
| Norma URP | <<locked>> | 80% | 40,915 psi | 67% | 2907 fps | 98.7% |
| Ramshot Grand | <<locked>> | 94% | 46,615 psi | 77% | 3091 fps | 95.1% |
| Ramshot Hunter | <<locked>> | 80% | 39,566 psi | 65% | 2890 fps | 96.9% |
| Ramshot Magnum | <<locked>> | 94% | 42,061 psi | 69% | 2963 fps | 95.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,297 psi | 46% | 1831 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 51,097 psi | 84% | 3048 fps | 99% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 47,485 psi | 78% | 3104 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 41,234 psi | 68% | 2936 fps | 98.6% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 39,624 psi | 65% | 2940 fps | 98% |
| ReloadSwiss RS 76 | <<locked>> | 94% | 39,291 psi | 65% | 2982 fps | 95.7% |
| Rottweil R 903 | <<locked>> | 80% | 48,573 psi | 80% | 3005 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 49,240 psi | 81% | 3038 fps | 95.6% |
| Rottweil R 905 | <<locked>> | 88% | 43,845 psi | 72% | 2982 fps | 95.7% |
| Rottweil R 907 | <<locked>> | 80% | 44,976 psi | 74% | 2923 fps | 96.9% |
| Shooters World Long Rifle | <<locked>> | 80% | 44,048 psi | 72% | 2907 fps | 98.3% |
| Shooters World SW4350 | <<locked>> | 80% | 42,395 psi | 70% | 2887 fps | 97% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 48,994 psi | 80% | 3054 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 48,660 psi | 80% | 2887 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 43,062 psi | 71% | 2841 fps | 97% |
| SNPE Vectan Tubal 8000 | <<locked>> | 88% | 43,439 psi | 71% | 2976 fps | 95.6% |
| Somchem S355 | <<locked>> | 80% | 48,515 psi | 80% | 3002 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 50,691 psi | 83% | 3025 fps | 95.1% |
| Somchem S365 | <<locked>> | 80% | 37,521 psi | 62% | 2867 fps | 99.9% |
| Somchem S385 | <<locked>> | 84% | 39,740 psi | 65% | 2854 fps | 95.3% |
| Vihtavuori N150 | <<locked>> | 80% | 46,282 psi | 76% | 2920 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 42,206 psi | 69% | 2900 fps | 98.9% |
| Vihtavuori N165 | <<locked>> | 90% | 41,278 psi | 68% | 2881 fps | 95.4% |
| Vihtavuori N550 | <<locked>> | 80% | 41,771 psi | 69% | 2904 fps | 98.7% |
| Vihtavuori N555 | <<locked>> | 80% | 33,547 psi | 55% | 2762 fps | 97.4% |
| Vihtavuori N560 | <<locked>> | 94% | 51,126 psi | 84% | 3189 fps | 95.6% |
| Vihtavuori N565 | <<locked>> | 98% | 47,587 psi | 78% | 3100 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 41,147 psi | 68% | 2864 fps | 99.9% |
| Winchester 760 | <<locked>> | 80% | 43,018 psi | 71% | 2959 fps | 97% |
| Winchester StaBALL HD | <<locked>> | 80% | 27,050 psi | 44% | 2661 fps | 96.7% |
| Winchester Supreme 780 | <<locked>> | 90% | 44,048 psi | 72% | 2946 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 74 powders for 7 mm Blaser Mag. loaded with the .284 | 130gr | Barnes X BT. Winchester StaBALL HD delivers the highest muzzle velocity at 3,307 fps; across all powders the maximum-charge window runs from 1,995 fps to 3,307 fps. Alliant Reloder-25 gives the best case fill at 100 %, and 74 of the 74 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 130.0 gr projectile in 0.284" calls for a 1:11.0 twist; slower twists will usually not stabilise this weight. Alliant Reloder-25, Bofors RP15, Hodgdon Retumbo 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, Alliant Reloder-26, Accurate High Country rank at the top here: for 7 mm Blaser Mag. with the .284 | 130gr | Barnes X 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.