Load Specifications
Load data in caliber 7 mm Weath. Mag. with .284 | 140gr | SAKO Powerhead Blade Pro bullet and 85 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.
A valid access license is required to use the Personalized Load Calculator.
You can find more information in our FAQ: How can I use the Personalized Load Calculator?
Max Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2700 | <<locked>> | 82% | 56,246 psi | 88% | 2976 fps | 99% |
| Accurate 3100 | <<locked>> | 98% | 55,535 psi | 87% | 3028 fps | 99.8% |
| Accurate 4064 | <<locked>> | 82% | 55,970 psi | 88% | 2959 fps | 100% |
| Accurate 4350 | <<locked>> | 90% | 57,261 psi | 90% | 3077 fps | 100% |
| Accurate MAGPRO | <<locked>> | 96% | 53,809 psi | 84% | 3110 fps | 96% |
| ADI AR 2208 | <<locked>> | 84% | 55,492 psi | 87% | 2989 fps | 100% |
| ADI AR 2209 | <<locked>> | 94% | 54,418 psi | 85% | 3068 fps | 98.2% |
| ADI AR 2213 | <<locked>> | 98% | 55,695 psi | 87% | 3117 fps | 97.4% |
| Alliant Power Pro Varmint | <<locked>> | 94% | 54,491 psi | 85% | 3058 fps | 98.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 56,652 psi | 89% | 3015 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 56,869 psi | 89% | 3041 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 90% | 54,375 psi | 85% | 3081 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 86% | 55,622 psi | 87% | 3100 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 96% | 57,566 psi | 90% | 3114 fps | 98.7% |
| Alliant Reloder-22 | <<locked>> | 98% | 55,129 psi | 86% | 3117 fps | 98.5% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 55,840 psi | 88% | 3097 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 48,414 psi | 76% | 3028 fps | 99.7% |
| Alliant Reloder-26 | <<locked>> | 96% | 56,347 psi | 88% | 3189 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 54,027 psi | 85% | 3097 fps | 98.3% |
| Bofors RP3 | <<locked>> | 84% | 57,682 psi | 90% | 3035 fps | 100% |
| Bofors RP5 | <<locked>> | 98% | 55,129 psi | 86% | 3117 fps | 98.5% |
| Bofors RP7 | <<locked>> | 88% | 56,652 psi | 89% | 3022 fps | 99.2% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 47,993 psi | 75% | 2966 fps | 96.5% |
| Hodgdon H380 | <<locked>> | 82% | 54,201 psi | 85% | 2995 fps | 100% |
| Hodgdon H414 | <<locked>> | 88% | 55,434 psi | 87% | 3071 fps | 99.4% |
| Hodgdon H4350 | <<locked>> | 86% | 54,824 psi | 86% | 3028 fps | 98.5% |
| Hodgdon H4831 | <<locked>> | 96% | 55,796 psi | 87% | 3058 fps | 96.8% |
| Hodgdon H4831 SC | <<locked>> | 96% | 54,737 psi | 86% | 3041 fps | 96.5% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 54,650 psi | 86% | 2999 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 47,471 psi | 74% | 3071 fps | 97.9% |
| Hodgdon Superformance | <<locked>> | 88% | 55,985 psi | 88% | 3110 fps | 99.3% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,637 psi | 57% | 1906 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 55,100 psi | 86% | 2976 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 82% | 57,319 psi | 90% | 3009 fps | 99.5% |
| IMR 4350 | <<locked>> | 90% | 54,636 psi | 86% | 3002 fps | 99% |
| IMR 4451 Enduron | <<locked>> | 86% | 54,984 psi | 86% | 2995 fps | 99.3% |
| IMR 4831 | <<locked>> | 92% | 57,566 psi | 90% | 3064 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 57,232 psi | 90% | 3048 fps | 97.2% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 57,072 psi | 89% | 3156 fps | 97.8% |
| Lovex S062 | <<locked>> | 82% | 55,405 psi | 87% | 2966 fps | 100% |
| Lovex S065 | <<locked>> | 88% | 55,100 psi | 86% | 2992 fps | 99.8% |
| Lovex S070 | <<locked>> | 90% | 56,623 psi | 89% | 3038 fps | 99.6% |
| Lovex S071ᴾ | <<locked>> | 100% | 49,240 psi | 77% | 2927 fps | 99.2% |
| Norma 203B | <<locked>> | 82% | 56,159 psi | 88% | 3025 fps | 100% |
| Norma 204 | <<locked>> | 90% | 55,390 psi | 87% | 3054 fps | 98.2% |
| Norma MRP | <<locked>> | 96% | 54,897 psi | 86% | 3140 fps | 99.4% |
| Norma URP | <<locked>> | 90% | 55,651 psi | 87% | 3058 fps | 100% |
| Ramshot Big Game | <<locked>> | 82% | 56,985 psi | 89% | 3048 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 57,740 psi | 90% | 3176 fps | 98.2% |
| Ramshot Hunter | <<locked>> | 90% | 54,592 psi | 86% | 3058 fps | 99.7% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 51,880 psi | 81% | 3041 fps | 98.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,434 psi | 59% | 1952 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 54,070 psi | 85% | 2979 fps | 99.5% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 54,969 psi | 86% | 3091 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 57,363 psi | 90% | 3100 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 55,608 psi | 87% | 3130 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 47,776 psi | 75% | 3068 fps | 98.9% |
| Rottweil R 902 | <<locked>> | 82% | 57,276 psi | 90% | 2979 fps | 100% |
| Rottweil R 903 | <<locked>> | 84% | 54,186 psi | 85% | 2976 fps | 100% |
| Rottweil R 904 | <<locked>> | 94% | 55,941 psi | 88% | 3035 fps | 97.5% |
| Rottweil R 905 | <<locked>> | 96% | 56,753 psi | 89% | 3097 fps | 98.7% |
| Rottweil R 907 | <<locked>> | 88% | 56,652 psi | 89% | 3022 fps | 99.2% |
| Shooters World Long Rifle | <<locked>> | 88% | 55,100 psi | 86% | 2992 fps | 99.8% |
| Shooters World Precision | <<locked>> | 82% | 55,405 psi | 87% | 2966 fps | 100% |
| Shooters World SW4350 | <<locked>> | 90% | 56,623 psi | 89% | 3038 fps | 99.6% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 55,724 psi | 87% | 3038 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 54,636 psi | 86% | 2854 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 54,621 psi | 86% | 2940 fps | 99.3% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 56,275 psi | 88% | 3091 fps | 98.7% |
| Somchem S355 | <<locked>> | 86% | 57,638 psi | 90% | 3025 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 54,143 psi | 85% | 2966 fps | 96.4% |
| Somchem S365 | <<locked>> | 92% | 55,593 psi | 87% | 3064 fps | 100% |
| Somchem S385 | <<locked>> | 96% | 57,479 psi | 90% | 3074 fps | 99.3% |
| Vihtavuori N150 | <<locked>> | 86% | 55,303 psi | 87% | 2943 fps | 100% |
| Vihtavuori N160 | <<locked>> | 90% | 57,711 psi | 90% | 3051 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 56,884 psi | 89% | 3045 fps | 99% |
| Vihtavuori N540 | <<locked>> | 82% | 56,043 psi | 88% | 2943 fps | 100% |
| Vihtavuori N550 | <<locked>> | 90% | 56,884 psi | 89% | 3054 fps | 100% |
| Vihtavuori N555 | <<locked>> | 96% | 54,723 psi | 86% | 3071 fps | 100% |
| Vihtavuori N560 | <<locked>> | 96% | 54,955 psi | 86% | 3130 fps | 96.9% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 50,662 psi | 79% | 3035 fps | 96.2% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 57,609 psi | 90% | 3015 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 55,695 psi | 87% | 3077 fps | 99.4% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 52,286 psi | 82% | 3173 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 57,609 psi | 90% | 3064 fps | 98.7% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2700 | <<locked>> | 80% | 52,576 psi | 82% | 2917 fps | 98.5% |
| Accurate 3100 | <<locked>> | 84% | 34,490 psi | 54% | 2618 fps | 95.7% |
| Accurate 4064 | <<locked>> | 80% | 52,504 psi | 82% | 2907 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 40,538 psi | 64% | 2776 fps | 98.9% |
| Accurate MAGPRO | <<locked>> | 94% | 50,096 psi | 79% | 3041 fps | 95% |
| ADI AR 2208 | <<locked>> | 80% | 49,124 psi | 77% | 2884 fps | 100% |
| ADI AR 2209 | <<locked>> | 86% | 41,814 psi | 66% | 2818 fps | 95.1% |
| ADI AR 2213 | <<locked>> | 94% | 48,776 psi | 76% | 2992 fps | 95.7% |
| Alliant Power Pro Varmint | <<locked>> | 86% | 42,018 psi | 66% | 2818 fps | 95.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 49,908 psi | 78% | 2910 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 53,127 psi | 83% | 2982 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 39,204 psi | 61% | 2789 fps | 99% |
| Alliant Reloder-17 | <<locked>> | 80% | 44,788 psi | 70% | 2917 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 86% | 41,597 psi | 65% | 2812 fps | 95.2% |
| Alliant Reloder-22 | <<locked>> | 90% | 42,090 psi | 66% | 2864 fps | 95.5% |
| Alliant Reloder-23 | <<locked>> | 80% | 28,921 psi | 45% | 2526 fps | 97.1% |
| Alliant Reloder-25 | <<locked>> | 88% | 32,895 psi | 52% | 2657 fps | 95.5% |
| Alliant Reloder-26 | 60.8 gr | 80% | 31,140 psi | 49% | 2644 fps | 95.5% |
| Bofors RP15 | <<locked>> | 92% | 41,524 psi | 65% | 2848 fps | 95.1% |
| Bofors RP3 | <<locked>> | 80% | 50,676 psi | 79% | 2923 fps | 100% |
| Bofors RP5 | <<locked>> | 90% | 42,090 psi | 66% | 2864 fps | 95.5% |
| Bofors RP7 | <<locked>> | 80% | 44,150 psi | 69% | 2792 fps | 97% |
| Hodgdon H1000 | <<locked>> | 98% | 44,643 psi | 70% | 2894 fps | 95.4% |
| Hodgdon H380 | <<locked>> | 80% | 50,821 psi | 80% | 2940 fps | 99.8% |
| Hodgdon H414 | <<locked>> | 80% | 42,438 psi | 67% | 2825 fps | 97.2% |
| Hodgdon H4350 | <<locked>> | 80% | 45,310 psi | 71% | 2851 fps | 96.6% |
| Hodgdon H4831 | <<locked>> | 92% | 48,849 psi | 77% | 2936 fps | 95.1% |
| Hodgdon H4831 SC | <<locked>> | 94% | 51,242 psi | 80% | 2982 fps | 95.7% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 36,767 psi | 58% | 2671 fps | 99.3% |
| Hodgdon Retumbo | <<locked>> | 96% | 41,510 psi | 65% | 2930 fps | 95.8% |
| Hodgdon Superformance | <<locked>> | 80% | 41,510 psi | 65% | 2838 fps | 96.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,499 psi | 43% | 1709 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 51,692 psi | 81% | 2920 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 80% | 53,882 psi | 84% | 2953 fps | 99.2% |
| IMR 4350 | <<locked>> | 80% | 39,639 psi | 62% | 2710 fps | 95.7% |
| IMR 4451 Enduron | <<locked>> | 80% | 45,585 psi | 71% | 2822 fps | 97.8% |
| IMR 4831 | <<locked>> | 80% | 38,928 psi | 61% | 2726 fps | 98.6% |
| IMR 4955 Enduron | <<locked>> | 92% | 50,517 psi | 79% | 2930 fps | 95.8% |
| IMR 7828 SSC | <<locked>> | 94% | 46,499 psi | 73% | 2959 fps | 95.2% |
| Lovex S062 | <<locked>> | 80% | 52,011 psi | 82% | 2913 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 43,062 psi | 67% | 2769 fps | 98.4% |
| Lovex S070 | <<locked>> | 80% | 41,292 psi | 65% | 2749 fps | 97.1% |
| Lovex S071 | <<locked>> | 88% | 33,489 psi | 52% | 2589 fps | 95.2% |
| Norma 203B | <<locked>> | 80% | 52,489 psi | 82% | 2966 fps | 100% |
| Norma 204 | <<locked>> | 82% | 42,047 psi | 66% | 2799 fps | 95.1% |
| Norma MRP | 63.4 gr | 86% | 38,508 psi | 60% | 2812 fps | 95.8% |
| Norma URP | <<locked>> | 80% | 40,103 psi | 63% | 2769 fps | 98.7% |
| Ramshot Big Game | <<locked>> | 80% | 53,214 psi | 83% | 2992 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 46,412 psi | 73% | 2969 fps | 95.6% |
| Ramshot Hunter | <<locked>> | 80% | 39,030 psi | 61% | 2756 fps | 97% |
| Ramshot Magnum | <<locked>> | 92% | 38,566 psi | 60% | 2769 fps | 95% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,920 psi | 44% | 1745 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 50,589 psi | 79% | 2920 fps | 99.2% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 47,529 psi | 74% | 2972 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 40,335 psi | 63% | 2795 fps | 98.6% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 38,943 psi | 61% | 2805 fps | 98.2% |
| ReloadSwiss RS 76 | <<locked>> | 94% | 38,493 psi | 60% | 2844 fps | 95.8% |
| Rottweil R 902 | <<locked>> | 80% | 53,766 psi | 84% | 2927 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 47,558 psi | 75% | 2867 fps | 100% |
| Rottweil R 904 | <<locked>> | 88% | 46,108 psi | 72% | 2854 fps | 95.2% |
| Rottweil R 905 | <<locked>> | 86% | 40,683 psi | 64% | 2792 fps | 95.1% |
| Rottweil R 907 | <<locked>> | 80% | 44,150 psi | 69% | 2792 fps | 97% |
| Shooters World Long Rifle | <<locked>> | 80% | 43,062 psi | 67% | 2769 fps | 98.4% |
| Shooters World Precision | <<locked>> | 80% | 52,011 psi | 82% | 2913 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 41,292 psi | 65% | 2749 fps | 97.1% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 48,834 psi | 77% | 2923 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 48,457 psi | 76% | 2762 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 42,221 psi | 66% | 2713 fps | 97.2% |
| SNPE Vectan Tubal 8000 | <<locked>> | 88% | 43,105 psi | 68% | 2848 fps | 95.8% |
| Somchem S355 | <<locked>> | 80% | 47,645 psi | 75% | 2864 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 50,647 psi | 79% | 2907 fps | 95.6% |
| Somchem S365 | <<locked>> | 80% | 36,709 psi | 58% | 2723 fps | 99.9% |
| Somchem S385 | <<locked>> | 84% | 38,725 psi | 61% | 2717 fps | 95.4% |
| Vihtavuori N150 | <<locked>> | 80% | 45,542 psi | 71% | 2789 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 41,481 psi | 65% | 2769 fps | 99% |
| Vihtavuori N165 | <<locked>> | 90% | 40,770 psi | 64% | 2753 fps | 95.6% |
| Vihtavuori N540 | <<locked>> | 80% | 52,649 psi | 83% | 2894 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 41,060 psi | 64% | 2772 fps | 98.8% |
| Vihtavuori N555 | <<locked>> | 80% | 32,155 psi | 50% | 2608 fps | 97.1% |
| Vihtavuori N560 | 67.9 gr | 92% | 47,950 psi | 75% | 2999 fps | 95.2% |
| Vihtavuori N565 | <<locked>> | 98% | 47,137 psi | 74% | 2966 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 40,553 psi | 64% | 2733 fps | 99.9% |
| Winchester 760 | <<locked>> | 80% | 42,612 psi | 67% | 2831 fps | 97.2% |
| Winchester StaBALL HD | <<locked>> | 80% | 25,643 psi | 40% | 2500 fps | 95.9% |
| Winchester Supreme 780 | <<locked>> | 90% | 43,729 psi | 69% | 2822 fps | 95.8% |
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 85 powders for 7 mm Weath. Mag. loaded with the .284 | 140gr | SAKO Powerhead Blade Pro. Alliant Reloder-26 delivers the highest muzzle velocity at 3,189 fps; across all powders the maximum-charge window runs from 1,906 fps to 3,189 fps. Alliant Reloder-23 gives the best case fill at 100 %, and 85 of the 85 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 57–90 %, leaving at least 10 % headroom. The 140.0 gr projectile in 0.284" calls for a 1:9.0 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 Weath. Mag. with the .284 | 140gr | SAKO Powerhead Blade Pro 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.