Load Specifications
Load data in caliber 7 mm Weath. Mag. with .284 | 145gr | Hasler Hunting bullet and 83 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Accurate MAGPRO, 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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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% | 57,174 psi | 90% | 2956 fps | 99.4% |
| Accurate 3100 | <<locked>> | 98% | 56,913 psi | 89% | 3012 fps | 100% |
| Accurate 4064 | <<locked>> | 82% | 56,681 psi | 89% | 2930 fps | 100% |
| Accurate 4350 | <<locked>> | 88% | 54,708 psi | 86% | 2999 fps | 100% |
| Accurate High Country | <<locked>> | 94% | 54,520 psi | 85% | 3100 fps | 97.9% |
| Accurate MAGPRO | <<locked>> | 96% | 55,651 psi | 87% | 3104 fps | 96.9% |
| ADI AR 2208 | <<locked>> | 84% | 56,594 psi | 89% | 2969 fps | 100% |
| ADI AR 2209 | <<locked>> | 94% | 55,796 psi | 87% | 3051 fps | 98.8% |
| ADI AR 2213 | <<locked>> | 98% | 57,261 psi | 90% | 3110 fps | 98.2% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 39,363 psi | 62% | 2808 fps | 97.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 57,711 psi | 90% | 2989 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 90% | 55,724 psi | 87% | 3061 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 86% | 57,217 psi | 90% | 3081 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 94% | 55,303 psi | 87% | 3041 fps | 98.8% |
| Alliant Reloder-22 | <<locked>> | 98% | 56,768 psi | 89% | 3104 fps | 99.1% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 57,624 psi | 90% | 3077 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 49,777 psi | 78% | 3015 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 94% | 54,331 psi | 85% | 3114 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 55,637 psi | 87% | 3084 fps | 98.9% |
| Bofors RP3 | <<locked>> | 82% | 54,984 psi | 86% | 2953 fps | 100% |
| Bofors RP30ᴾ | <<locked>> | 100% | 45,614 psi | 71% | 2933 fps | 96.3% |
| Bofors RP5 | <<locked>> | 98% | 56,768 psi | 89% | 3104 fps | 99.1% |
| Bofors RP7 | <<locked>> | 86% | 54,288 psi | 85% | 2946 fps | 99.2% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 49,168 psi | 77% | 2959 fps | 97.4% |
| Hodgdon H380 | <<locked>> | 82% | 55,143 psi | 86% | 2972 fps | 100% |
| Hodgdon H414 | <<locked>> | 88% | 56,768 psi | 89% | 3054 fps | 99.7% |
| Hodgdon H4350 | <<locked>> | 86% | 56,130 psi | 88% | 3012 fps | 99% |
| Hodgdon H4831 | <<locked>> | 96% | 57,348 psi | 90% | 3051 fps | 97.6% |
| Hodgdon H4831 SC | <<locked>> | 96% | 56,289 psi | 88% | 3031 fps | 97.4% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 56,028 psi | 88% | 2979 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 48,762 psi | 76% | 3068 fps | 98.7% |
| Hodgdon Superformance | <<locked>> | 88% | 57,406 psi | 90% | 3094 fps | 99.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,608 psi | 57% | 1883 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 55,970 psi | 88% | 2949 fps | 100% |
| IMR 4350 | <<locked>> | 90% | 55,854 psi | 88% | 2989 fps | 99.4% |
| IMR 4451 Enduron | <<locked>> | 86% | 55,956 psi | 88% | 2976 fps | 99.6% |
| IMR 4831 | <<locked>> | 90% | 55,230 psi | 87% | 2992 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 54,897 psi | 86% | 2976 fps | 97.3% |
| IMR 7828 SSC | <<locked>> | 98% | 54,940 psi | 86% | 3084 fps | 97.9% |
| Lovex S062 | <<locked>> | 82% | 56,362 psi | 88% | 2943 fps | 100% |
| Lovex S065 | <<locked>> | 88% | 56,202 psi | 88% | 2972 fps | 100% |
| Lovex S070 | <<locked>> | 90% | 57,740 psi | 90% | 3018 fps | 99.8% |
| Lovex S071ᴾ | <<locked>> | 100% | 50,430 psi | 79% | 2910 fps | 99.6% |
| Norma 203B | <<locked>> | 82% | 57,261 psi | 90% | 2999 fps | 100% |
| Norma 204 | <<locked>> | 90% | 56,695 psi | 89% | 3041 fps | 98.8% |
| Norma MRP | <<locked>> | 96% | 56,637 psi | 89% | 3130 fps | 99.8% |
| Norma URP | <<locked>> | 90% | 57,043 psi | 89% | 3038 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 55,463 psi | 87% | 3104 fps | 98.3% |
| Ramshot Hunter | <<locked>> | 90% | 55,883 psi | 88% | 3041 fps | 99.9% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 53,621 psi | 84% | 3035 fps | 99.2% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,391 psi | 59% | 1929 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 54,984 psi | 86% | 2956 fps | 99.8% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 56,724 psi | 89% | 3068 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 54,766 psi | 86% | 3022 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 57,130 psi | 90% | 3114 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 49,182 psi | 77% | 3064 fps | 99.5% |
| Rottweil R 903 | <<locked>> | 84% | 55,100 psi | 86% | 2953 fps | 100% |
| Rottweil R 904 | <<locked>> | 94% | 57,203 psi | 90% | 3022 fps | 98.2% |
| Rottweil R 905 | <<locked>> | 94% | 54,665 psi | 86% | 3025 fps | 98.8% |
| Rottweil R 907 | <<locked>> | 86% | 54,288 psi | 85% | 2946 fps | 99.2% |
| Shooters World Long Rifle | <<locked>> | 88% | 56,202 psi | 88% | 2972 fps | 100% |
| Shooters World Precision | <<locked>> | 82% | 56,362 psi | 88% | 2943 fps | 100% |
| Shooters World SW4350 | <<locked>> | 90% | 57,740 psi | 90% | 3018 fps | 99.8% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 57,101 psi | 89% | 3018 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 55,695 psi | 87% | 2831 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 55,651 psi | 87% | 2923 fps | 99.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 54,215 psi | 85% | 3022 fps | 98.7% |
| Somchem S355 | <<locked>> | 84% | 55,100 psi | 86% | 2949 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 55,347 psi | 87% | 2956 fps | 97.2% |
| Somchem S365 | <<locked>> | 92% | 57,130 psi | 90% | 3041 fps | 100% |
| Somchem S385 | <<locked>> | 94% | 55,056 psi | 86% | 2999 fps | 99.3% |
| Vihtavuori N150 | <<locked>> | 86% | 56,492 psi | 89% | 2923 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 55,419 psi | 87% | 2979 fps | 100% |
| Vihtavuori N165 | <<locked>> | 98% | 54,752 psi | 86% | 2979 fps | 99.1% |
| Vihtavuori N540 | <<locked>> | 82% | 56,985 psi | 89% | 2917 fps | 100% |
| Vihtavuori N550 | <<locked>> | 88% | 54,375 psi | 85% | 2979 fps | 100% |
| Vihtavuori N555 | <<locked>> | 96% | 56,289 psi | 88% | 3051 fps | 100% |
| Vihtavuori N560 | <<locked>> | 96% | 56,608 psi | 89% | 3120 fps | 97.7% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 52,243 psi | 82% | 3028 fps | 97.1% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 55,056 psi | 86% | 2940 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 57,029 psi | 89% | 3058 fps | 99.7% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 54,491 psi | 85% | 3156 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 55,259 psi | 87% | 2995 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% | 53,461 psi | 84% | 2897 fps | 99% |
| Accurate 3100 | <<locked>> | 82% | 32,547 psi | 51% | 2536 fps | 95.4% |
| Accurate 4064 | <<locked>> | 80% | 53,185 psi | 83% | 2881 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 41,205 psi | 65% | 2756 fps | 99.3% |
| Accurate High Country | 66 gr | 88% | 43,947 psi | 69% | 2897 fps | 95.3% |
| Accurate MAGPRO | 70.3 gr | 92% | 48,008 psi | 75% | 2966 fps | 95% |
| ADI AR 2208 | <<locked>> | 80% | 49,922 psi | 78% | 2861 fps | 100% |
| ADI AR 2209 | <<locked>> | 84% | 39,914 psi | 63% | 2743 fps | 95.1% |
| ADI AR 2213 | <<locked>> | 92% | 46,702 psi | 73% | 2917 fps | 95.8% |
| ADI AR 2225 | <<locked>> | 98% | 36,724 psi | 58% | 2740 fps | 96% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 50,865 psi | 80% | 2884 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 39,914 psi | 63% | 2769 fps | 99.4% |
| Alliant Reloder-17 | <<locked>> | 80% | 45,905 psi | 72% | 2897 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 84% | 39,726 psi | 62% | 2736 fps | 95.1% |
| Alliant Reloder-22 | <<locked>> | 88% | 40,335 psi | 63% | 2792 fps | 95.5% |
| Alliant Reloder-23 | <<locked>> | 80% | 29,327 psi | 46% | 2510 fps | 97.7% |
| Alliant Reloder-25 | <<locked>> | 86% | 31,241 psi | 49% | 2579 fps | 95.3% |
| Alliant Reloder-26 | 61.8 gr | 80% | 31,589 psi | 50% | 2628 fps | 96.4% |
| Bofors RP15 | <<locked>> | 90% | 39,798 psi | 62% | 2776 fps | 95.1% |
| Bofors RP3 | <<locked>> | 80% | 51,256 psi | 80% | 2897 fps | 100% |
| Bofors RP30 | <<locked>> | 98% | 42,627 psi | 67% | 2871 fps | 95.4% |
| Bofors RP5 | <<locked>> | 88% | 40,335 psi | 63% | 2792 fps | 95.5% |
| Bofors RP7 | <<locked>> | 80% | 44,875 psi | 70% | 2772 fps | 97.7% |
| Hodgdon H1000 | <<locked>> | 96% | 42,757 psi | 67% | 2828 fps | 95.5% |
| Hodgdon H380 | <<locked>> | 80% | 51,721 psi | 81% | 2917 fps | 100% |
| Hodgdon H414 | <<locked>> | 80% | 43,265 psi | 68% | 2808 fps | 97.8% |
| Hodgdon H4350 | <<locked>> | 80% | 46,021 psi | 72% | 2831 fps | 97.3% |
| Hodgdon H4831 | <<locked>> | 90% | 46,543 psi | 73% | 2858 fps | 95% |
| Hodgdon H4831 SC | <<locked>> | 92% | 49,037 psi | 77% | 2907 fps | 95.7% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 37,420 psi | 59% | 2651 fps | 99.6% |
| Hodgdon Retumbo | <<locked>> | 94% | 39,871 psi | 62% | 2861 fps | 95.9% |
| Hodgdon Superformance | <<locked>> | 80% | 42,554 psi | 67% | 2828 fps | 97.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,412 psi | 43% | 1686 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 52,533 psi | 82% | 2897 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 40,379 psi | 63% | 2697 fps | 96.5% |
| IMR 4451 Enduron | <<locked>> | 80% | 46,238 psi | 72% | 2802 fps | 98.3% |
| IMR 4831 | <<locked>> | 80% | 39,436 psi | 62% | 2703 fps | 99% |
| IMR 4955 Enduron | <<locked>> | 90% | 48,457 psi | 76% | 2861 fps | 95.8% |
| IMR 7828 SSC | <<locked>> | 92% | 44,527 psi | 70% | 2887 fps | 95.2% |
| Lovex S062 | <<locked>> | 80% | 52,939 psi | 83% | 2890 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 43,729 psi | 69% | 2749 fps | 98.9% |
| Lovex S070 | <<locked>> | 80% | 41,930 psi | 66% | 2733 fps | 97.7% |
| Lovex S071 | <<locked>> | 86% | 31,749 psi | 50% | 2516 fps | 95% |
| Norma 203B | <<locked>> | 80% | 53,519 psi | 84% | 2943 fps | 100% |
| Norma 204 | <<locked>> | 80% | 40,103 psi | 63% | 2726 fps | 95% |
| Norma MRP | <<locked>> | 84% | 36,651 psi | 57% | 2733 fps | 95.6% |
| Norma URP | <<locked>> | 80% | 40,915 psi | 64% | 2749 fps | 99.2% |
| Ramshot Grand | <<locked>> | 92% | 44,353 psi | 70% | 2894 fps | 95.6% |
| Ramshot Hunter | <<locked>> | 80% | 39,784 psi | 62% | 2740 fps | 97.7% |
| Ramshot Magnum | <<locked>> | 92% | 39,479 psi | 62% | 2762 fps | 96% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,992 psi | 44% | 1726 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 51,445 psi | 81% | 2900 fps | 99.5% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 48,762 psi | 76% | 2949 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 41,321 psi | 65% | 2779 fps | 99.1% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 39,842 psi | 62% | 2789 fps | 98.8% |
| ReloadSwiss RS 76 | <<locked>> | 92% | 36,622 psi | 57% | 2769 fps | 95.7% |
| Rottweil R 903 | <<locked>> | 80% | 48,356 psi | 76% | 2844 fps | 100% |
| Rottweil R 904 | <<locked>> | 86% | 44,222 psi | 69% | 2785 fps | 95.2% |
| Rottweil R 905 | <<locked>> | 84% | 38,754 psi | 61% | 2713 fps | 95% |
| Rottweil R 907 | <<locked>> | 80% | 44,875 psi | 70% | 2772 fps | 97.7% |
| Shooters World Long Rifle | <<locked>> | 80% | 43,729 psi | 69% | 2749 fps | 98.9% |
| Shooters World Precision | <<locked>> | 80% | 52,939 psi | 83% | 2890 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 41,930 psi | 66% | 2733 fps | 97.7% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 49,864 psi | 78% | 2904 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 49,182 psi | 77% | 2736 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 42,641 psi | 67% | 2690 fps | 97.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 86% | 41,292 psi | 65% | 2776 fps | 95.8% |
| Somchem S355 | <<locked>> | 80% | 48,515 psi | 76% | 2841 fps | 100% |
| Somchem S361 | <<locked>> | 88% | 48,298 psi | 76% | 2831 fps | 95.5% |
| Somchem S365 | <<locked>> | 80% | 37,521 psi | 59% | 2703 fps | 100% |
| Somchem S385 | <<locked>> | 82% | 36,811 psi | 58% | 2638 fps | 95.2% |
| Vihtavuori N150 | <<locked>> | 80% | 46,369 psi | 73% | 2766 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 42,322 psi | 66% | 2749 fps | 99.4% |
| Vihtavuori N165 | <<locked>> | 88% | 39,015 psi | 61% | 2684 fps | 95.6% |
| Vihtavuori N540 | <<locked>> | 80% | 53,563 psi | 84% | 2867 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 41,771 psi | 65% | 2749 fps | 99.2% |
| Vihtavuori N555 | <<locked>> | 80% | 32,677 psi | 51% | 2589 fps | 97.7% |
| Vihtavuori N560 | <<locked>> | 90% | 45,759 psi | 72% | 2923 fps | 95.1% |
| Vihtavuori N565 | <<locked>> | 96% | 45,310 psi | 71% | 2897 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 41,452 psi | 65% | 2713 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 43,453 psi | 68% | 2812 fps | 97.9% |
| Winchester StaBALL HD | <<locked>> | 80% | 25,802 psi | 40% | 2484 fps | 96.8% |
| Winchester Supreme 780 | <<locked>> | 88% | 41,568 psi | 65% | 2743 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 88 powders for 7 mm Weath. Mag. loaded with the .284 | 145gr | Hasler Hunting. Winchester StaBALL HD delivers the highest muzzle velocity at 3,156 fps; across all powders the maximum-charge window runs from 1,883 fps to 3,156 fps. ADI AR 2217 gives the best case fill at 100 %, and 88 of the 88 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 54–90 %, leaving at least 10 % headroom. The 145.0 gr projectile in 0.284" calls for a 1:10.0 twist; slower twists will usually not stabilise this weight. ADI AR 2217, ADI AR 2225, 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. Accurate MAGPRO, Alliant Reloder-26, Accurate High Country rank at the top here: for 7 mm Weath. Mag. with the .284 | 145gr | Hasler Hunting they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Baschieri & Pellagri 109, Norma 217, ReloadSwiss RS 80 burn incompletely and react more sensitively to barrel length and temperature. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.