Load Specifications
Load data in caliber 7 mm Weath. Mag. with .284 | 140gr | Barnes TTSX BT bullet and 88 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 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.
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% | 55,608 psi | 87% | 2976 fps | 99% |
| Accurate 3100 | <<locked>> | 98% | 54,621 psi | 86% | 3022 fps | 99.8% |
| Accurate 4064 | <<locked>> | 82% | 54,940 psi | 86% | 2953 fps | 100% |
| Accurate 4350 | <<locked>> | 90% | 56,521 psi | 89% | 3074 fps | 100% |
| Accurate High Country | <<locked>> | 96% | 56,391 psi | 88% | 3176 fps | 97.9% |
| Accurate MAGPRO | <<locked>> | 98% | 57,580 psi | 90% | 3179 fps | 96.9% |
| ADI AR 2208 | <<locked>> | 84% | 55,317 psi | 87% | 2995 fps | 100% |
| ADI AR 2209 | <<locked>> | 96% | 57,682 psi | 90% | 3127 fps | 98.8% |
| ADI AR 2213 | <<locked>> | 98% | 55,419 psi | 87% | 3120 fps | 97.4% |
| Alliant Power Pro Varmint | <<locked>> | 94% | 54,244 psi | 85% | 3061 fps | 98.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 56,014 psi | 88% | 3015 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 56,246 psi | 88% | 3038 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 92% | 57,493 psi | 90% | 3133 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 86% | 55,187 psi | 86% | 3100 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 96% | 57,072 psi | 89% | 3110 fps | 98.7% |
| Alliant Reloder-22 | <<locked>> | 98% | 54,737 psi | 86% | 3114 fps | 98.5% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 55,463 psi | 87% | 3094 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 47,964 psi | 75% | 3028 fps | 99.7% |
| Alliant Reloder-26 | <<locked>> | 96% | 56,144 psi | 88% | 3189 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 53,650 psi | 84% | 3094 fps | 98.3% |
| Bofors RP3 | <<locked>> | 84% | 57,087 psi | 89% | 3031 fps | 100% |
| Bofors RP5 | <<locked>> | 98% | 54,737 psi | 86% | 3114 fps | 98.5% |
| Bofors RP7 | <<locked>> | 88% | 56,217 psi | 88% | 3022 fps | 99.2% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 47,500 psi | 74% | 2963 fps | 96.4% |
| Hodgdon H380 | <<locked>> | 84% | 57,276 psi | 90% | 3051 fps | 100% |
| Hodgdon H414 | <<locked>> | 88% | 54,969 psi | 86% | 3071 fps | 99.4% |
| Hodgdon H4350 | <<locked>> | 86% | 54,462 psi | 85% | 3028 fps | 98.5% |
| Hodgdon H4831 | <<locked>> | 96% | 55,521 psi | 87% | 3061 fps | 96.8% |
| Hodgdon H4831 SC | <<locked>> | 96% | 54,447 psi | 85% | 3041 fps | 96.6% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 54,201 psi | 85% | 2999 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 47,007 psi | 74% | 3071 fps | 97.8% |
| Hodgdon Superformance | <<locked>> | 88% | 55,434 psi | 87% | 3110 fps | 99.3% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,492 psi | 57% | 1909 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 54,621 psi | 86% | 2976 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 82% | 57,101 psi | 89% | 3015 fps | 99.5% |
| IMR 4350 | <<locked>> | 92% | 57,696 psi | 90% | 3058 fps | 99.4% |
| IMR 4451 Enduron | <<locked>> | 86% | 54,462 psi | 85% | 2992 fps | 99.2% |
| IMR 4831 | <<locked>> | 92% | 57,000 psi | 89% | 3064 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 56,753 psi | 89% | 3048 fps | 97.2% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 56,768 psi | 89% | 3156 fps | 97.8% |
| Lovex S062 | <<locked>> | 82% | 54,766 psi | 86% | 2966 fps | 100% |
| Lovex S065 | <<locked>> | 88% | 54,578 psi | 86% | 2989 fps | 99.8% |
| Lovex S070 | <<locked>> | 90% | 56,072 psi | 88% | 3035 fps | 99.6% |
| Lovex S071ᴾ | <<locked>> | 100% | 48,573 psi | 76% | 2920 fps | 99.2% |
| Norma 203B | <<locked>> | 82% | 55,579 psi | 87% | 3022 fps | 100% |
| Norma 204 | <<locked>> | 90% | 54,926 psi | 86% | 3054 fps | 98.2% |
| Norma MRP | <<locked>> | 96% | 54,476 psi | 85% | 3140 fps | 99.4% |
| Norma URP | <<locked>> | 90% | 55,201 psi | 87% | 3058 fps | 100% |
| Ramshot Big Game | <<locked>> | 82% | 56,594 psi | 89% | 3051 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 57,624 psi | 90% | 3182 fps | 98.3% |
| Ramshot Hunter | <<locked>> | 90% | 54,070 psi | 85% | 3058 fps | 99.7% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 51,358 psi | 80% | 3038 fps | 98.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,246 psi | 58% | 1959 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 57,130 psi | 90% | 3035 fps | 99.8% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 54,621 psi | 86% | 3091 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 56,724 psi | 89% | 3100 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 55,143 psi | 86% | 3130 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 47,152 psi | 74% | 3061 fps | 98.8% |
| Rottweil R 902 | <<locked>> | 82% | 56,565 psi | 89% | 2976 fps | 100% |
| Rottweil R 903 | <<locked>> | 86% | 57,188 psi | 90% | 3028 fps | 100% |
| Rottweil R 904 | <<locked>> | 94% | 55,477 psi | 87% | 3035 fps | 97.5% |
| Rottweil R 905 | <<locked>> | 96% | 56,434 psi | 88% | 3097 fps | 98.7% |
| Rottweil R 907 | <<locked>> | 88% | 56,217 psi | 88% | 3022 fps | 99.2% |
| Shooters World Long Rifle | <<locked>> | 88% | 54,578 psi | 86% | 2989 fps | 99.8% |
| Shooters World Precision | <<locked>> | 82% | 54,766 psi | 86% | 2966 fps | 100% |
| Shooters World SW4350 | <<locked>> | 90% | 56,072 psi | 88% | 3035 fps | 99.6% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 55,332 psi | 87% | 3035 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 54,404 psi | 85% | 2858 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 54,085 psi | 85% | 2940 fps | 99.3% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 55,970 psi | 88% | 3094 fps | 98.7% |
| Somchem S355 | <<locked>> | 86% | 56,942 psi | 89% | 3022 fps | 100% |
| Somchem S361 | <<locked>> | 94% | 57,450 psi | 90% | 3028 fps | 97.1% |
| Somchem S365 | <<locked>> | 92% | 55,056 psi | 86% | 3061 fps | 100% |
| Somchem S385 | <<locked>> | 96% | 57,058 psi | 89% | 3071 fps | 99.3% |
| Vihtavuori N135 | <<locked>> | 82% | 57,145 psi | 90% | 2933 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 57,537 psi | 90% | 2949 fps | 100% |
| Vihtavuori N150 | <<locked>> | 86% | 54,853 psi | 86% | 2943 fps | 100% |
| Vihtavuori N160 | <<locked>> | 90% | 57,246 psi | 90% | 3051 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 56,550 psi | 89% | 3048 fps | 99% |
| Vihtavuori N540 | <<locked>> | 82% | 55,651 psi | 87% | 2946 fps | 100% |
| Vihtavuori N550 | <<locked>> | 90% | 56,333 psi | 88% | 3054 fps | 100% |
| Vihtavuori N555 | <<locked>> | 96% | 54,201 psi | 85% | 3068 fps | 100% |
| Vihtavuori N560 | <<locked>> | 96% | 54,621 psi | 86% | 3130 fps | 96.9% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 50,038 psi | 78% | 3028 fps | 96.1% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 57,145 psi | 90% | 3012 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 55,216 psi | 87% | 3074 fps | 99.4% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 51,895 psi | 81% | 3169 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 57,203 psi | 90% | 3068 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% | 51,996 psi | 81% | 2913 fps | 98.5% |
| Accurate 3100 | <<locked>> | 84% | 33,460 psi | 52% | 2598 fps | 95.3% |
| Accurate 4064 | <<locked>> | 80% | 51,503 psi | 81% | 2900 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 39,842 psi | 62% | 2769 fps | 98.8% |
| Accurate High Country | <<locked>> | 90% | 45,411 psi | 71% | 2972 fps | 95.3% |
| Accurate MAGPRO | <<locked>> | 94% | 49,632 psi | 78% | 3038 fps | 95% |
| ADI AR 2208 | <<locked>> | 80% | 48,718 psi | 76% | 2884 fps | 100% |
| ADI AR 2209 | <<locked>> | 86% | 41,205 psi | 65% | 2812 fps | 95% |
| ADI AR 2213 | <<locked>> | 94% | 48,240 psi | 76% | 2989 fps | 95.7% |
| Alliant Power Pro Varmint | <<locked>> | 86% | 41,582 psi | 65% | 2815 fps | 95.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 49,313 psi | 77% | 2904 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 52,808 psi | 83% | 2982 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 38,711 psi | 61% | 2782 fps | 98.9% |
| Alliant Reloder-17 | <<locked>> | 80% | 44,396 psi | 70% | 2917 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 86% | 41,147 psi | 64% | 2808 fps | 95.1% |
| Alliant Reloder-22 | <<locked>> | 90% | 41,510 psi | 65% | 2858 fps | 95.4% |
| Alliant Reloder-23 | <<locked>> | 80% | 28,181 psi | 44% | 2513 fps | 96.7% |
| Alliant Reloder-25 | <<locked>> | 88% | 32,126 psi | 50% | 2641 fps | 95.2% |
| Alliant Reloder-26 | <<locked>> | 80% | 30,414 psi | 48% | 2628 fps | 95.2% |
| Bofors RP15 | <<locked>> | 92% | 40,944 psi | 64% | 2841 fps | 95% |
| Bofors RP3 | <<locked>> | 80% | 49,835 psi | 78% | 2920 fps | 100% |
| Bofors RP5 | <<locked>> | 90% | 41,510 psi | 65% | 2858 fps | 95.4% |
| Bofors RP7 | <<locked>> | 80% | 43,526 psi | 68% | 2789 fps | 97% |
| Hodgdon H1000 | <<locked>> | 98% | 44,208 psi | 69% | 2894 fps | 95.4% |
| Hodgdon H380 | <<locked>> | 80% | 50,154 psi | 79% | 2933 fps | 99.8% |
| Hodgdon H414 | <<locked>> | 80% | 41,974 psi | 66% | 2825 fps | 97.1% |
| Hodgdon H4350 | <<locked>> | 80% | 44,773 psi | 70% | 2848 fps | 96.6% |
| Hodgdon H4831 | <<locked>> | 92% | 48,356 psi | 76% | 2933 fps | 95.1% |
| Hodgdon H4831 SC | <<locked>> | 94% | 50,705 psi | 79% | 2979 fps | 95.7% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 36,187 psi | 57% | 2667 fps | 99.3% |
| Hodgdon Retumbo | <<locked>> | 96% | 41,046 psi | 64% | 2927 fps | 95.8% |
| Hodgdon Superformance | <<locked>> | 80% | 40,959 psi | 64% | 2831 fps | 96.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,267 psi | 43% | 1709 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 51,227 psi | 80% | 2920 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 80% | 53,403 psi | 84% | 2953 fps | 99.2% |
| IMR 4350 | <<locked>> | 80% | 39,102 psi | 61% | 2707 fps | 95.6% |
| IMR 4451 Enduron | <<locked>> | 80% | 45,136 psi | 71% | 2822 fps | 97.7% |
| IMR 4831 | <<locked>> | 80% | 38,189 psi | 60% | 2717 fps | 98.5% |
| IMR 4955 Enduron | <<locked>> | 92% | 50,082 psi | 78% | 2933 fps | 95.8% |
| IMR 7828 SSC | <<locked>> | 94% | 46,180 psi | 72% | 2959 fps | 95.2% |
| Lovex S062 | <<locked>> | 80% | 51,372 psi | 81% | 2913 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 42,395 psi | 66% | 2762 fps | 98.3% |
| Lovex S070 | <<locked>> | 80% | 40,582 psi | 64% | 2740 fps | 96.9% |
| Lovex S071 | <<locked>> | 90% | 34,809 psi | 55% | 2635 fps | 95.8% |
| Norma 203B | <<locked>> | 80% | 52,127 psi | 82% | 2969 fps | 100% |
| Norma 204 | <<locked>> | 82% | 41,626 psi | 65% | 2799 fps | 95% |
| Norma MRP | 64.2 gr | 86% | 37,869 psi | 59% | 2802 fps | 95.6% |
| Norma URP | <<locked>> | 80% | 39,450 psi | 62% | 2762 fps | 98.6% |
| Ramshot Big Game | <<locked>> | 80% | 52,881 psi | 83% | 2992 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 46,021 psi | 72% | 2966 fps | 95.6% |
| Ramshot Hunter | <<locked>> | 80% | 38,377 psi | 60% | 2746 fps | 96.9% |
| Ramshot Magnum | <<locked>> | 94% | 40,930 psi | 64% | 2831 fps | 96% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,818 psi | 44% | 1752 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 50,169 psi | 79% | 2920 fps | 99.1% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 47,181 psi | 74% | 2969 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 39,740 psi | 62% | 2785 fps | 98.5% |
| ReloadSwiss RS 70 | 61 gr | 80% | 38,450 psi | 60% | 2799 fps | 98.1% |
| ReloadSwiss RS 76 | <<locked>> | 94% | 37,840 psi | 59% | 2838 fps | 95.7% |
| Rottweil R 902 | <<locked>> | 80% | 53,084 psi | 83% | 2923 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 46,746 psi | 73% | 2861 fps | 100% |
| Rottweil R 904 | <<locked>> | 88% | 45,701 psi | 72% | 2854 fps | 95.2% |
| Rottweil R 905 | <<locked>> | 88% | 42,960 psi | 67% | 2848 fps | 95.9% |
| Rottweil R 907 | <<locked>> | 80% | 43,526 psi | 68% | 2789 fps | 97% |
| Shooters World Long Rifle | <<locked>> | 80% | 42,395 psi | 66% | 2762 fps | 98.3% |
| Shooters World Precision | <<locked>> | 80% | 51,372 psi | 81% | 2913 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 40,582 psi | 64% | 2740 fps | 96.9% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 48,269 psi | 76% | 2920 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 47,776 psi | 75% | 2759 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 41,524 psi | 65% | 2707 fps | 97.1% |
| SNPE Vectan Tubal 8000 | <<locked>> | 88% | 42,583 psi | 67% | 2841 fps | 95.7% |
| Somchem S355 | <<locked>> | 80% | 47,007 psi | 74% | 2861 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 50,067 psi | 78% | 2904 fps | 95.5% |
| Somchem S365 | <<locked>> | 80% | 35,998 psi | 56% | 2713 fps | 99.9% |
| Somchem S385 | <<locked>> | 84% | 38,087 psi | 60% | 2710 fps | 95.2% |
| Vihtavuori N135 | <<locked>> | 80% | 53,534 psi | 84% | 2881 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 53,751 psi | 84% | 2897 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 44,904 psi | 70% | 2785 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 41,060 psi | 64% | 2766 fps | 98.9% |
| Vihtavuori N165 | <<locked>> | 90% | 40,205 psi | 63% | 2749 fps | 95.5% |
| Vihtavuori N540 | <<locked>> | 80% | 52,069 psi | 82% | 2890 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 40,364 psi | 63% | 2762 fps | 98.7% |
| Vihtavuori N555 | <<locked>> | 80% | 31,314 psi | 49% | 2592 fps | 96.8% |
| Vihtavuori N560 | 68.7 gr | 92% | 47,369 psi | 74% | 2995 fps | 95.1% |
| Vihtavuori N565 | <<locked>> | 98% | 46,543 psi | 73% | 2963 fps | 95.2% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 40,089 psi | 63% | 2730 fps | 99.9% |
| Winchester 760 | <<locked>> | 80% | 41,974 psi | 66% | 2825 fps | 97.1% |
| Winchester StaBALL HD | <<locked>> | 80% | 24,816 psi | 39% | 2470 fps | 95.2% |
| Winchester Supreme 780 | <<locked>> | 90% | 43,149 psi | 68% | 2815 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 | 140gr | Barnes TTSX BT. Alliant Reloder-26 delivers the highest muzzle velocity at 3,189 fps; across all powders the maximum-charge window runs from 1,909 fps to 3,189 fps. Alliant Reloder-23 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 57–90 %, leaving at least 10 % headroom. The 140.0 gr projectile in 0.284" calls for a 1:10.0 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, ReloadSwiss RS 70 rank at the top here: for 7 mm Weath. Mag. with the .284 | 140gr | Barnes TTSX 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.