Load Specifications
Load data in caliber 7 mm Blaser Mag. with .284 | 120gr | Sierra Pro-Hunter bullet and 78 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 ReloadSwiss RS 70.
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% | 52,997 psi | 87% | 3173 fps | 97.9% |
| Accurate 3100ᴾ | <<locked>> | 100% | 55,085 psi | 90% | 3278 fps | 99.4% |
| Accurate 4064 | <<locked>> | 82% | 52,446 psi | 86% | 3176 fps | 100% |
| Accurate 4350 | <<locked>> | 90% | 53,171 psi | 87% | 3278 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 84% | 52,634 psi | 86% | 3205 fps | 100% |
| ADI AR 2209 | <<locked>> | 96% | 54,375 psi | 89% | 3320 fps | 97.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 53,345 psi | 88% | 3232 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 53,432 psi | 88% | 3251 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 92% | 53,925 psi | 89% | 3343 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 86% | 51,503 psi | 85% | 3307 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 96% | 53,853 psi | 88% | 3307 fps | 97.4% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 54,752 psi | 90% | 3369 fps | 97.8% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 51,619 psi | 85% | 3297 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 44,904 psi | 74% | 3205 fps | 98.7% |
| Alliant Reloder-26 | <<locked>> | 96% | 51,750 psi | 85% | 3379 fps | 99.9% |
| Bofors RP15ᴾ | <<locked>> | 100% | 50,067 psi | 82% | 3281 fps | 96.7% |
| Bofors RP3 | <<locked>> | 84% | 54,201 psi | 89% | 3248 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 54,752 psi | 90% | 3369 fps | 97.8% |
| Bofors RP7 | <<locked>> | 88% | 53,476 psi | 88% | 3222 fps | 98.1% |
| Hodgdon H380 | <<locked>> | 84% | 54,389 psi | 89% | 3261 fps | 99.8% |
| Hodgdon H414 | <<locked>> | 88% | 51,721 psi | 85% | 3268 fps | 98.4% |
| Hodgdon H4350 | <<locked>> | 88% | 54,926 psi | 90% | 3287 fps | 97.8% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 54,302 psi | 89% | 3258 fps | 100% |
| Hodgdon Superformance | <<locked>> | 88% | 51,793 psi | 85% | 3301 fps | 98.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,245 psi | 60% | 2090 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 51,866 psi | 85% | 3186 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 82% | 54,433 psi | 89% | 3219 fps | 98.7% |
| IMR 4350 | <<locked>> | 92% | 54,534 psi | 90% | 3258 fps | 98.4% |
| IMR 4451 Enduron | <<locked>> | 86% | 51,851 psi | 85% | 3196 fps | 98.2% |
| IMR 4831 | <<locked>> | 92% | 53,838 psi | 88% | 3271 fps | 99.9% |
| IMR 4895 | <<locked>> | 82% | 54,810 psi | 90% | 3287 fps | 100% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 53,055 psi | 87% | 3337 fps | 96% |
| Lovex S062 | <<locked>> | 82% | 52,286 psi | 86% | 3182 fps | 100% |
| Lovex S065 | <<locked>> | 88% | 51,938 psi | 85% | 3192 fps | 99.2% |
| Lovex S070 | <<locked>> | 90% | 53,258 psi | 87% | 3238 fps | 98.7% |
| Lovex S071ᴾ | <<locked>> | 100% | 45,629 psi | 75% | 3107 fps | 98.1% |
| Norma 203B | <<locked>> | 82% | 52,736 psi | 87% | 3235 fps | 100% |
| Norma 204 | <<locked>> | 90% | 51,793 psi | 85% | 3248 fps | 96.8% |
| Norma MRP | <<locked>> | 98% | 54,418 psi | 89% | 3399 fps | 98.9% |
| Norma URP | <<locked>> | 90% | 52,054 psi | 85% | 3261 fps | 99.8% |
| Ramshot Big Game | <<locked>> | 82% | 53,592 psi | 88% | 3264 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 53,621 psi | 88% | 3356 fps | 96.5% |
| Ramshot Hunter | <<locked>> | 92% | 54,433 psi | 89% | 3320 fps | 99.3% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 47,935 psi | 79% | 3209 fps | 97% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,941 psi | 61% | 2139 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 54,462 psi | 89% | 3245 fps | 99.1% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 54,723 psi | 90% | 3363 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 53,171 psi | 87% | 3301 fps | 99.8% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 51,750 psi | 85% | 3327 fps | 99.7% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 44,280 psi | 73% | 3225 fps | 97% |
| Rottweil R 902 | <<locked>> | 82% | 53,983 psi | 89% | 3196 fps | 100% |
| Rottweil R 903 | <<locked>> | 86% | 54,302 psi | 89% | 3245 fps | 100% |
| Rottweil R 904 | <<locked>> | 94% | 52,518 psi | 86% | 3225 fps | 95.9% |
| Rottweil R 905 | <<locked>> | 96% | 52,895 psi | 87% | 3291 fps | 97.4% |
| Rottweil R 907 | <<locked>> | 88% | 53,476 psi | 88% | 3222 fps | 98.1% |
| Shooters World Long Rifle | <<locked>> | 88% | 51,938 psi | 85% | 3192 fps | 99.2% |
| Shooters World Precision | <<locked>> | 82% | 52,286 psi | 86% | 3182 fps | 100% |
| Shooters World SW4350 | <<locked>> | 90% | 53,258 psi | 87% | 3238 fps | 98.7% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 52,228 psi | 86% | 3248 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 55,071 psi | 90% | 3123 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 51,648 psi | 85% | 3140 fps | 98.3% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 52,431 psi | 86% | 3281 fps | 97.3% |
| Somchem S355 | <<locked>> | 86% | 54,230 psi | 89% | 3241 fps | 100% |
| Somchem S365 | <<locked>> | 94% | 54,998 psi | 90% | 3327 fps | 100% |
| Somchem S385 | <<locked>> | 96% | 53,577 psi | 88% | 3261 fps | 98.2% |
| Vihtavuori N135 | <<locked>> | 82% | 54,302 psi | 89% | 3153 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 54,520 psi | 90% | 3166 fps | 100% |
| Vihtavuori N150 | <<locked>> | 86% | 52,098 psi | 86% | 3156 fps | 100% |
| Vihtavuori N160 | <<locked>> | 90% | 53,983 psi | 89% | 3255 fps | 99.9% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 52,924 psi | 87% | 3232 fps | 97.8% |
| Vihtavuori N540 | <<locked>> | 82% | 52,910 psi | 87% | 3159 fps | 100% |
| Vihtavuori N550 | <<locked>> | 90% | 53,374 psi | 88% | 3264 fps | 99.8% |
| Vihtavuori N555 | <<locked>> | 98% | 54,056 psi | 89% | 3327 fps | 100% |
| Vihtavuori N560 | <<locked>> | 98% | 54,723 psi | 90% | 3386 fps | 96% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 53,838 psi | 88% | 3219 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 51,967 psi | 85% | 3274 fps | 98.4% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 46,818 psi | 77% | 3360 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 53,780 psi | 88% | 3255 fps | 97.4% |
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% | 49,647 psi | 82% | 3110 fps | 97.2% |
| Accurate 3100 | <<locked>> | 88% | 36,303 psi | 60% | 2894 fps | 95.3% |
| Accurate 4064 | <<locked>> | 80% | 49,110 psi | 81% | 3117 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 37,507 psi | 62% | 2949 fps | 97.5% |
| ADI AR 2208 | <<locked>> | 80% | 46,340 psi | 76% | 3087 fps | 99.5% |
| ADI AR 2209 | <<locked>> | 92% | 47,500 psi | 78% | 3186 fps | 95.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 46,978 psi | 77% | 3117 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 50,038 psi | 82% | 3192 fps | 99.9% |
| Alliant Reloder-16 | <<locked>> | 80% | 36,564 psi | 60% | 2963 fps | 97.5% |
| Alliant Reloder-17 | <<locked>> | 80% | 41,495 psi | 68% | 3107 fps | 99.7% |
| Alliant Reloder-19 | <<locked>> | 92% | 47,123 psi | 77% | 3176 fps | 95.9% |
| Alliant Reloder-22 | <<locked>> | 94% | 44,556 psi | 73% | 3163 fps | 95.3% |
| Alliant Reloder-23 | <<locked>> | 82% | 28,631 psi | 47% | 2740 fps | 95.8% |
| Alliant Reloder-25 | <<locked>> | 92% | 34,650 psi | 57% | 2933 fps | 95.1% |
| Alliant Reloder-26 | 66.8 gr | 84% | 33,025 psi | 54% | 2933 fps | 95.4% |
| Bofors RP15 | <<locked>> | 98% | 47,021 psi | 77% | 3215 fps | 95.9% |
| Bofors RP3 | <<locked>> | 80% | 47,384 psi | 78% | 3127 fps | 100% |
| Bofors RP5 | <<locked>> | 94% | 44,556 psi | 73% | 3163 fps | 95.3% |
| Bofors RP7 | <<locked>> | 80% | 41,510 psi | 68% | 2972 fps | 95.3% |
| Hodgdon H380 | <<locked>> | 80% | 47,645 psi | 78% | 3136 fps | 99.1% |
| Hodgdon H414 | <<locked>> | 80% | 39,566 psi | 65% | 3005 fps | 95.3% |
| Hodgdon H4350 | <<locked>> | 82% | 45,353 psi | 74% | 3097 fps | 95.6% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 34,040 psi | 56% | 2844 fps | 98.1% |
| Hodgdon Superformance | <<locked>> | 82% | 41,539 psi | 68% | 3081 fps | 95.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,195 psi | 45% | 1877 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 48,747 psi | 80% | 3127 fps | 99.8% |
| IMR 4166 Enduron | <<locked>> | 80% | 51,024 psi | 84% | 3156 fps | 98.2% |
| IMR 4350 | <<locked>> | 84% | 42,293 psi | 69% | 3012 fps | 95.6% |
| IMR 4451 Enduron | <<locked>> | 80% | 42,917 psi | 70% | 3012 fps | 96.2% |
| IMR 4831 | <<locked>> | 80% | 36,013 psi | 59% | 2897 fps | 97.1% |
| IMR 4895 | <<locked>> | 80% | 51,300 psi | 84% | 3222 fps | 100% |
| IMR 7828 SSC | <<locked>> | 98% | 49,719 psi | 82% | 3271 fps | 95.1% |
| Lovex S062 | <<locked>> | 80% | 48,979 psi | 80% | 3123 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 40,437 psi | 66% | 2953 fps | 97% |
| Lovex S070 | <<locked>> | 80% | 38,754 psi | 64% | 2930 fps | 95.3% |
| Lovex S071 | <<locked>> | 94% | 37,492 psi | 62% | 2923 fps | 95.8% |
| Norma 203B | <<locked>> | 80% | 49,414 psi | 81% | 3176 fps | 100% |
| Norma 204 | <<locked>> | 86% | 45,020 psi | 74% | 3110 fps | 95% |
| Norma MRP | 69.5 gr | 90% | 40,959 psi | 67% | 3114 fps | 95.7% |
| Norma URP | <<locked>> | 80% | 37,333 psi | 61% | 2949 fps | 97.3% |
| Ramshot Big Game | <<locked>> | 80% | 49,951 psi | 82% | 3199 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 49,922 psi | 82% | 3284 fps | 95.5% |
| Ramshot Hunter | <<locked>> | 80% | 36,289 psi | 60% | 2927 fps | 95.1% |
| Ramshot Magnum | <<locked>> | 98% | 44,614 psi | 73% | 3140 fps | 96.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,543 psi | 45% | 1916 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 47,659 psi | 78% | 3117 fps | 98.1% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 44,063 psi | 72% | 3173 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 37,405 psi | 61% | 2969 fps | 97.1% |
| ReloadSwiss RS 70 | 63.1 gr | 80% | 36,303 psi | 60% | 2972 fps | 96.3% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 41,205 psi | 68% | 3146 fps | 95.8% |
| Rottweil R 902 | <<locked>> | 80% | 50,792 psi | 83% | 3143 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 44,527 psi | 73% | 3068 fps | 99.9% |
| Rottweil R 904 | <<locked>> | 92% | 49,124 psi | 81% | 3159 fps | 95% |
| Rottweil R 905 | <<locked>> | 92% | 46,282 psi | 76% | 3159 fps | 95.8% |
| Rottweil R 907 | <<locked>> | 80% | 41,510 psi | 68% | 2972 fps | 95.3% |
| Shooters World Long Rifle | <<locked>> | 80% | 40,437 psi | 66% | 2953 fps | 97% |
| Shooters World Precision | <<locked>> | 80% | 48,979 psi | 80% | 3123 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 38,754 psi | 64% | 2930 fps | 95.3% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 45,788 psi | 75% | 3123 fps | 99.7% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 45,658 psi | 75% | 2969 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 39,581 psi | 65% | 2887 fps | 95.4% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 45,861 psi | 75% | 3150 fps | 95.6% |
| Somchem S355 | <<locked>> | 80% | 44,701 psi | 73% | 3064 fps | 99.8% |
| Somchem S365 | <<locked>> | 80% | 33,765 psi | 55% | 2897 fps | 99.1% |
| Somchem S385 | <<locked>> | 88% | 41,017 psi | 67% | 3005 fps | 95.1% |
| Vihtavuori N135 | <<locked>> | 80% | 51,010 psi | 84% | 3104 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 51,300 psi | 84% | 3117 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 42,815 psi | 70% | 2986 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 38,682 psi | 64% | 2946 fps | 97.7% |
| Vihtavuori N165 | <<locked>> | 94% | 43,352 psi | 71% | 3045 fps | 95.5% |
| Vihtavuori N540 | <<locked>> | 80% | 49,603 psi | 81% | 3104 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 38,218 psi | 63% | 2946 fps | 97.3% |
| Vihtavuori N555 | <<locked>> | 82% | 31,604 psi | 52% | 2828 fps | 95.9% |
| Vihtavuori N560 | <<locked>> | 96% | 51,111 psi | 84% | 3314 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 37,927 psi | 62% | 2910 fps | 99.3% |
| Winchester 760 | <<locked>> | 80% | 39,566 psi | 65% | 3005 fps | 95.3% |
| Winchester StaBALL HD | <<locked>> | 84% | 27,079 psi | 44% | 2766 fps | 95.5% |
| Winchester Supreme 780 | <<locked>> | 94% | 46,731 psi | 77% | 3120 fps | 95.7% |
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 78 powders for 7 mm Blaser Mag. loaded with the .284 | 120gr | Sierra Pro-Hunter. Norma MRP delivers the highest muzzle velocity at 3,399 fps; across all powders the maximum-charge window runs from 2,090 fps to 3,399 fps. Accurate 3100 gives the best case fill at 100 %, and 78 of the 78 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 120.0 gr projectile in 0.284" calls for a 1:16.0 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, ReloadSwiss RS 70 rank at the top here: for 7 mm Blaser Mag. with the .284 | 120gr | Sierra Pro-Hunter 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.