Load Specifications
Load data in caliber 7 mm Weath. Mag. with .284 | 127gr | Hasler Hunting bullet and 89 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-26, Accurate High Country and Norma MRP.
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 2495 | <<locked>> | 82% | 55,666 psi | 87% | 3054 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 57,290 psi | 90% | 3130 fps | 98.6% |
| Accurate 3100ᴾ | <<locked>> | 100% | 55,811 psi | 87% | 3169 fps | 99.5% |
| Accurate 4064 | <<locked>> | 84% | 56,130 psi | 88% | 3114 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 57,711 psi | 90% | 3228 fps | 100% |
| Accurate High Country | <<locked>> | 98% | 57,551 psi | 90% | 3330 fps | 97.3% |
| ADI AR 2208 | <<locked>> | 86% | 56,695 psi | 89% | 3153 fps | 100% |
| ADI AR 2209 | <<locked>> | 96% | 55,317 psi | 87% | 3219 fps | 97.7% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 56,739 psi | 89% | 3268 fps | 96.8% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 56,333 psi | 88% | 3284 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 57,508 psi | 90% | 3176 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 57,537 psi | 90% | 3199 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 92% | 55,027 psi | 86% | 3238 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 88% | 56,492 psi | 89% | 3258 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 96% | 54,694 psi | 86% | 3199 fps | 97.7% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 55,811 psi | 87% | 3261 fps | 98% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 52,605 psi | 82% | 3186 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 45,571 psi | 71% | 3097 fps | 98.9% |
| Alliant Reloder-26 | <<locked>> | 98% | 57,261 psi | 90% | 3343 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 50,995 psi | 80% | 3173 fps | 96.9% |
| Bofors RP3 | <<locked>> | 84% | 54,592 psi | 86% | 3133 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 55,811 psi | 87% | 3261 fps | 98% |
| Bofors RP7 | <<locked>> | 90% | 57,624 psi | 90% | 3176 fps | 98.8% |
| Hodgdon H380 | <<locked>> | 84% | 55,100 psi | 86% | 3153 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 90% | 56,318 psi | 88% | 3225 fps | 99.1% |
| Hodgdon H4350 | <<locked>> | 88% | 55,883 psi | 88% | 3186 fps | 98.1% |
| Hodgdon H4831 | <<locked>> | 98% | 56,913 psi | 89% | 3209 fps | 96.1% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 55,129 psi | 86% | 3153 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 56,623 psi | 89% | 3196 fps | 100% |
| Hodgdon Superformance | <<locked>> | 90% | 57,101 psi | 89% | 3264 fps | 99% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,289 psi | 57% | 2011 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 57,029 psi | 89% | 3159 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 55,912 psi | 88% | 3133 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 82% | 55,129 psi | 86% | 3114 fps | 98.9% |
| IMR 4350 | <<locked>> | 92% | 55,506 psi | 87% | 3156 fps | 98.6% |
| IMR 4451 Enduron | <<locked>> | 88% | 55,869 psi | 88% | 3150 fps | 98.9% |
| IMR 4831 | <<locked>> | 92% | 54,505 psi | 85% | 3159 fps | 100% |
| IMR 4895 | <<locked>> | 82% | 55,506 psi | 87% | 3173 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 54,650 psi | 86% | 3136 fps | 95.9% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 53,998 psi | 85% | 3235 fps | 96.3% |
| Lovex S060 | <<locked>> | 82% | 57,290 psi | 90% | 3120 fps | 100% |
| Lovex S062 | <<locked>> | 84% | 56,173 psi | 88% | 3127 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 55,883 psi | 88% | 3143 fps | 99.6% |
| Lovex S070 | <<locked>> | 92% | 57,421 psi | 90% | 3189 fps | 99.3% |
| Lovex S071ᴾ | <<locked>> | 100% | 46,021 psi | 72% | 2999 fps | 98.2% |
| Norma 201 | <<locked>> | 82% | 57,377 psi | 90% | 3140 fps | 100% |
| Norma 203B | <<locked>> | 84% | 56,826 psi | 89% | 3182 fps | 100% |
| Norma 204 | <<locked>> | 92% | 56,289 psi | 88% | 3205 fps | 97.7% |
| Norma MRP | <<locked>> | 98% | 55,608 psi | 87% | 3291 fps | 99% |
| Norma URP | <<locked>> | 92% | 56,420 psi | 88% | 3212 fps | 100% |
| Ramshot Big Game | <<locked>> | 82% | 54,259 psi | 85% | 3153 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 54,723 psi | 86% | 3255 fps | 96.8% |
| Ramshot Hunter | <<locked>> | 92% | 55,274 psi | 87% | 3209 fps | 99.5% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 48,791 psi | 76% | 3110 fps | 97.3% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,970 psi | 58% | 2057 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 54,984 psi | 86% | 3133 fps | 99.2% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 55,753 psi | 87% | 3251 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 53,925 psi | 85% | 3189 fps | 99.9% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 56,420 psi | 88% | 3284 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 44,773 psi | 70% | 3117 fps | 97.2% |
| Rottweil R 902 | <<locked>> | 82% | 54,433 psi | 85% | 3084 fps | 100% |
| Rottweil R 903 | <<locked>> | 86% | 54,708 psi | 86% | 3130 fps | 100% |
| Rottweil R 904 | <<locked>> | 96% | 56,927 psi | 89% | 3186 fps | 96.9% |
| Rottweil R 905 | <<locked>> | 98% | 57,595 psi | 90% | 3248 fps | 98.3% |
| Rottweil R 907 | <<locked>> | 90% | 57,624 psi | 90% | 3176 fps | 98.8% |
| Shooters World Long Rifle | <<locked>> | 90% | 55,883 psi | 88% | 3143 fps | 99.6% |
| Shooters World Precision | <<locked>> | 84% | 56,173 psi | 88% | 3127 fps | 100% |
| Shooters World SW4350 | <<locked>> | 92% | 57,421 psi | 90% | 3189 fps | 99.3% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 56,724 psi | 89% | 3196 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 57,276 psi | 90% | 3169 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 55,782 psi | 87% | 3015 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 55,608 psi | 87% | 3091 fps | 99% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 57,116 psi | 90% | 3241 fps | 98.2% |
| Somchem S355 | <<locked>> | 86% | 54,621 psi | 86% | 3127 fps | 100% |
| Somchem S365 | <<locked>> | 94% | 55,941 psi | 88% | 3215 fps | 100% |
| Somchem S385 | <<locked>> | 96% | 54,288 psi | 85% | 3156 fps | 98.4% |
| Vihtavuori N135 | <<locked>> | 82% | 54,926 psi | 86% | 3041 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 55,216 psi | 87% | 3058 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 56,231 psi | 88% | 3104 fps | 100% |
| Vihtavuori N160 | <<locked>> | 90% | 54,955 psi | 86% | 3153 fps | 99.9% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 53,838 psi | 84% | 3130 fps | 98% |
| Vihtavuori N540 | <<locked>> | 84% | 57,116 psi | 90% | 3107 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 57,682 psi | 90% | 3209 fps | 100% |
| Vihtavuori N555 | <<locked>> | 98% | 54,868 psi | 86% | 3215 fps | 100% |
| Vihtavuori N560 | <<locked>> | 98% | 55,782 psi | 87% | 3278 fps | 96.3% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 54,694 psi | 86% | 3114 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 56,579 psi | 89% | 3232 fps | 99.1% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 48,283 psi | 76% | 3248 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 54,752 psi | 86% | 3153 fps | 97.6% |
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 2495 | <<locked>> | 80% | 51,924 psi | 81% | 2999 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 50,241 psi | 79% | 3009 fps | 97.5% |
| Accurate 3100 | <<locked>> | 88% | 36,550 psi | 57% | 2785 fps | 95.4% |
| Accurate 4064 | <<locked>> | 80% | 49,284 psi | 77% | 3002 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 37,724 psi | 59% | 2841 fps | 97.5% |
| Accurate High Country | 72.2 gr | 94% | 49,705 psi | 78% | 3182 fps | 95.5% |
| ADI AR 2208 | <<locked>> | 80% | 46,876 psi | 73% | 2979 fps | 99.6% |
| ADI AR 2209 | <<locked>> | 90% | 45,136 psi | 71% | 3018 fps | 95.2% |
| ADI AR 2213 | <<locked>> | 98% | 52,866 psi | 83% | 3199 fps | 95.9% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 52,243 psi | 82% | 3212 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 47,253 psi | 74% | 3002 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 50,604 psi | 79% | 3081 fps | 99.9% |
| Alliant Reloder-16 | <<locked>> | 80% | 36,898 psi | 58% | 2858 fps | 97.7% |
| Alliant Reloder-17 | <<locked>> | 80% | 42,134 psi | 66% | 2999 fps | 99.8% |
| Alliant Reloder-19 | <<locked>> | 90% | 44,831 psi | 70% | 3009 fps | 95.2% |
| Alliant Reloder-22 | <<locked>> | 94% | 45,397 psi | 71% | 3061 fps | 95.6% |
| Alliant Reloder-23 | <<locked>> | 82% | 28,718 psi | 45% | 2635 fps | 95.8% |
| Alliant Reloder-25 | <<locked>> | 92% | 35,027 psi | 55% | 2835 fps | 95.4% |
| Alliant Reloder-26 | 66.5 gr | 84% | 33,373 psi | 52% | 2828 fps | 95.5% |
| Bofors RP15 | <<locked>> | 96% | 44,541 psi | 70% | 3041 fps | 95.1% |
| Bofors RP3 | <<locked>> | 80% | 47,558 psi | 75% | 3012 fps | 100% |
| Bofors RP5 | <<locked>> | 94% | 45,397 psi | 71% | 3061 fps | 95.6% |
| Bofors RP7 | <<locked>> | 80% | 41,771 psi | 65% | 2867 fps | 95.4% |
| Hodgdon H380 | <<locked>> | 80% | 48,124 psi | 75% | 3028 fps | 99.2% |
| Hodgdon H414 | <<locked>> | 80% | 39,856 psi | 62% | 2894 fps | 95.4% |
| Hodgdon H4350 | <<locked>> | 82% | 45,803 psi | 72% | 2989 fps | 95.8% |
| Hodgdon H4831 | <<locked>> | 96% | 53,055 psi | 83% | 3143 fps | 95.2% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 34,360 psi | 54% | 2743 fps | 98.2% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 52,678 psi | 83% | 3130 fps | 100% |
| Hodgdon Superformance | <<locked>> | 82% | 41,989 psi | 66% | 2976 fps | 95.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,977 psi | 42% | 1798 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 53,359 psi | 84% | 3100 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 49,313 psi | 77% | 3018 fps | 99.9% |
| IMR 4166 Enduron | <<locked>> | 80% | 51,619 psi | 81% | 3051 fps | 98.4% |
| IMR 4350 | <<locked>> | 84% | 42,786 psi | 67% | 2907 fps | 95.8% |
| IMR 4451 Enduron | <<locked>> | 80% | 43,366 psi | 68% | 2907 fps | 96.4% |
| IMR 4831 | <<locked>> | 80% | 36,274 psi | 57% | 2792 fps | 97.2% |
| IMR 4895 | <<locked>> | 80% | 51,938 psi | 81% | 3110 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 51,169 psi | 80% | 3071 fps | 95% |
| IMR 7828 SSC | <<locked>> | 98% | 50,575 psi | 79% | 3169 fps | 95.4% |
| Lovex S060 | <<locked>> | 80% | 53,925 psi | 85% | 3064 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 49,385 psi | 77% | 3015 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 40,654 psi | 64% | 2848 fps | 97.1% |
| Lovex S070 | <<locked>> | 80% | 39,001 psi | 61% | 2825 fps | 95.4% |
| Lovex S071 | <<locked>> | 94% | 37,623 psi | 59% | 2815 fps | 95.8% |
| Norma 201 | <<locked>> | 80% | 53,693 psi | 84% | 3081 fps | 100% |
| Norma 203B | <<locked>> | 80% | 49,951 psi | 78% | 3064 fps | 100% |
| Norma 204 | <<locked>> | 86% | 45,803 psi | 72% | 3009 fps | 95.3% |
| Norma MRP | 69.1 gr | 90% | 41,452 psi | 65% | 3005 fps | 95.9% |
| Norma URP | <<locked>> | 80% | 37,724 psi | 59% | 2841 fps | 97.4% |
| Ramshot Big Game | <<locked>> | 80% | 50,517 psi | 79% | 3087 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 50,821 psi | 80% | 3182 fps | 95.9% |
| Ramshot Hunter | <<locked>> | 80% | 36,550 psi | 57% | 2818 fps | 95.2% |
| Ramshot Magnum | <<locked>> | 96% | 41,901 psi | 66% | 2966 fps | 95.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,470 psi | 43% | 1841 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 48,182 psi | 76% | 3009 fps | 98.2% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 44,846 psi | 70% | 3064 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 37,681 psi | 59% | 2858 fps | 97.2% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 36,550 psi | 57% | 2864 fps | 96.4% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 41,568 psi | 65% | 3038 fps | 96% |
| Rottweil R 902 | <<locked>> | 80% | 51,155 psi | 80% | 3028 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 44,860 psi | 70% | 2956 fps | 99.9% |
| Rottweil R 904 | <<locked>> | 92% | 49,951 psi | 78% | 3061 fps | 95.3% |
| Rottweil R 905 | <<locked>> | 90% | 43,888 psi | 69% | 2989 fps | 95.1% |
| Rottweil R 907 | <<locked>> | 80% | 41,771 psi | 65% | 2867 fps | 95.4% |
| Shooters World Long Rifle | <<locked>> | 80% | 40,654 psi | 64% | 2848 fps | 97.1% |
| Shooters World Precision | <<locked>> | 80% | 49,385 psi | 77% | 3015 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 39,001 psi | 61% | 2825 fps | 95.4% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 46,195 psi | 72% | 3012 fps | 99.8% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 53,693 psi | 84% | 3110 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 46,122 psi | 72% | 2864 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 39,798 psi | 62% | 2782 fps | 95.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 43,511 psi | 68% | 2982 fps | 95% |
| Somchem S355 | <<locked>> | 80% | 45,049 psi | 71% | 2953 fps | 99.9% |
| Somchem S365 | <<locked>> | 80% | 34,098 psi | 53% | 2789 fps | 99.2% |
| Somchem S385 | <<locked>> | 88% | 41,539 psi | 65% | 2907 fps | 95.4% |
| Vihtavuori N135 | <<locked>> | 80% | 51,503 psi | 81% | 2992 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 51,895 psi | 81% | 3009 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 43,192 psi | 68% | 2881 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 39,073 psi | 61% | 2841 fps | 97.8% |
| Vihtavuori N165 | <<locked>> | 94% | 43,874 psi | 69% | 2943 fps | 95.7% |
| Vihtavuori N540 | <<locked>> | 80% | 50,125 psi | 79% | 2995 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 38,551 psi | 60% | 2841 fps | 97.4% |
| Vihtavuori N555 | <<locked>> | 82% | 31,763 psi | 50% | 2717 fps | 96% |
| Vihtavuori N560 | <<locked>> | 96% | 52,054 psi | 82% | 3209 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 38,392 psi | 60% | 2808 fps | 99.4% |
| Winchester 760 | <<locked>> | 80% | 40,059 psi | 63% | 2900 fps | 95.5% |
| Winchester StaBALL HD | <<locked>> | 84% | 27,108 psi | 42% | 2657 fps | 95.5% |
| Winchester Supreme 780 | <<locked>> | 92% | 44,150 psi | 69% | 2953 fps | 95% |
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 89 powders for 7 mm Weath. Mag. loaded with the .284 | 127gr | Hasler Hunting. Alliant Reloder-26 delivers the highest muzzle velocity at 3,343 fps; across all powders the maximum-charge window runs from 2,011 fps to 3,343 fps. Accurate 3100 gives the best case fill at 100 %, and 89 of the 89 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 127.0 gr projectile in 0.284" calls for a 1:10.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, ADI AR 2213, Alliant Reloder-22 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, Accurate High Country, Norma MRP rank at the top here: for 7 mm Weath. Mag. with the .284 | 127gr | Hasler Hunting 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.