Load Specifications
Load data in caliber 7 mm Weath. Mag. with .284 | 150gr | Barnes TTSX BT bullet and 83 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.
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% | 57,595 psi | 90% | 2913 fps | 99.5% |
| Accurate 3100 | <<locked>> | 98% | 57,261 psi | 90% | 2969 fps | 100% |
| Accurate 4064 | <<locked>> | 82% | 56,971 psi | 89% | 2884 fps | 100% |
| Accurate 4350 | <<locked>> | 88% | 55,027 psi | 86% | 2956 fps | 100% |
| Accurate High Country | <<locked>> | 94% | 54,897 psi | 86% | 3061 fps | 98.2% |
| Accurate MAGPRO | <<locked>> | 96% | 55,869 psi | 88% | 3061 fps | 97.2% |
| ADI AR 2208 | <<locked>> | 84% | 57,101 psi | 89% | 2927 fps | 100% |
| ADI AR 2209 | <<locked>> | 94% | 56,260 psi | 88% | 3012 fps | 99% |
| ADI AR 2213 | <<locked>> | 98% | 57,638 psi | 90% | 3071 fps | 98.4% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 39,697 psi | 62% | 2776 fps | 97.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 54,447 psi | 85% | 2894 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 90% | 56,260 psi | 88% | 3018 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 86% | 57,638 psi | 90% | 3035 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 94% | 55,767 psi | 87% | 2999 fps | 99% |
| Alliant Reloder-22 | <<locked>> | 98% | 57,174 psi | 90% | 3064 fps | 99.3% |
| Alliant Reloder-23 | <<locked>> | 98% | 54,447 psi | 85% | 2982 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 50,169 psi | 79% | 2976 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 94% | 54,563 psi | 86% | 3068 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 56,028 psi | 88% | 3045 fps | 99.1% |
| Bofors RP3 | <<locked>> | 82% | 55,317 psi | 87% | 2910 fps | 100% |
| Bofors RP30ᴾ | <<locked>> | 100% | 46,035 psi | 72% | 2897 fps | 96.7% |
| Bofors RP5 | <<locked>> | 98% | 57,174 psi | 90% | 3064 fps | 99.3% |
| Bofors RP7 | <<locked>> | 86% | 54,650 psi | 86% | 2907 fps | 99.4% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 49,530 psi | 78% | 2923 fps | 97.8% |
| Hodgdon H380 | <<locked>> | 82% | 55,492 psi | 87% | 2930 fps | 100% |
| Hodgdon H414 | <<locked>> | 88% | 57,130 psi | 90% | 3012 fps | 99.8% |
| Hodgdon H4350 | <<locked>> | 86% | 56,608 psi | 89% | 2972 fps | 99.2% |
| Hodgdon H4831 | <<locked>> | 96% | 57,653 psi | 90% | 3009 fps | 97.8% |
| Hodgdon H4831 SC | <<locked>> | 96% | 56,579 psi | 89% | 2989 fps | 97.6% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 56,362 psi | 88% | 2933 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 49,168 psi | 77% | 3031 fps | 99% |
| Hodgdon Superformance | <<locked>> | 86% | 53,737 psi | 84% | 2989 fps | 99.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,738 psi | 58% | 1847 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 56,434 psi | 88% | 2907 fps | 100% |
| IMR 4350 | <<locked>> | 90% | 56,144 psi | 88% | 2943 fps | 99.5% |
| IMR 4451 Enduron | <<locked>> | 86% | 56,333 psi | 88% | 2933 fps | 99.7% |
| IMR 4831 | <<locked>> | 90% | 55,521 psi | 87% | 2949 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 55,259 psi | 87% | 2936 fps | 97.6% |
| IMR 7828 SSC | <<locked>> | 98% | 55,303 psi | 87% | 3045 fps | 98.2% |
| Lovex S062 | <<locked>> | 82% | 56,579 psi | 89% | 2894 fps | 100% |
| Lovex S065 | <<locked>> | 88% | 56,623 psi | 89% | 2927 fps | 100% |
| Lovex S070 | <<locked>> | 88% | 54,462 psi | 85% | 2917 fps | 99.7% |
| Lovex S071ᴾ | <<locked>> | 100% | 50,647 psi | 79% | 2867 fps | 99.7% |
| Norma 203B | <<locked>> | 82% | 57,551 psi | 90% | 2956 fps | 100% |
| Norma 204 | <<locked>> | 90% | 57,130 psi | 90% | 3002 fps | 99% |
| Norma MRP | <<locked>> | 96% | 57,058 psi | 89% | 3087 fps | 99.9% |
| Norma URP | <<locked>> | 90% | 57,319 psi | 90% | 2992 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 55,956 psi | 88% | 3068 fps | 98.6% |
| Ramshot Hunter | <<locked>> | 90% | 56,318 psi | 88% | 2999 fps | 100% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 53,998 psi | 85% | 2995 fps | 99.4% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,333 psi | 59% | 1890 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 55,376 psi | 87% | 2917 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 57,058 psi | 89% | 3022 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 55,216 psi | 87% | 2979 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 57,696 psi | 90% | 3071 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 49,559 psi | 78% | 3028 fps | 99.6% |
| Rottweil R 903 | <<locked>> | 84% | 55,448 psi | 87% | 2907 fps | 100% |
| Rottweil R 904 | <<locked>> | 94% | 57,580 psi | 90% | 2979 fps | 98.4% |
| Rottweil R 905 | <<locked>> | 94% | 54,839 psi | 86% | 2982 fps | 99% |
| Rottweil R 907 | <<locked>> | 86% | 54,650 psi | 86% | 2907 fps | 99.4% |
| Shooters World Long Rifle | <<locked>> | 88% | 56,623 psi | 89% | 2927 fps | 100% |
| Shooters World Precision | <<locked>> | 82% | 56,579 psi | 89% | 2894 fps | 100% |
| Shooters World SW4350 | <<locked>> | 88% | 54,462 psi | 85% | 2917 fps | 99.7% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 57,290 psi | 90% | 2969 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 56,144 psi | 88% | 2789 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 56,130 psi | 88% | 2884 fps | 99.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 54,418 psi | 85% | 2976 fps | 98.9% |
| Somchem S355 | <<locked>> | 84% | 55,390 psi | 87% | 2904 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 55,680 psi | 87% | 2917 fps | 97.4% |
| Somchem S365 | <<locked>> | 92% | 57,580 psi | 90% | 2995 fps | 100% |
| Somchem S385 | <<locked>> | 94% | 55,506 psi | 87% | 2959 fps | 99.5% |
| Vihtavuori N150 | <<locked>> | 86% | 56,623 psi | 89% | 2874 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 55,695 psi | 87% | 2933 fps | 100% |
| Vihtavuori N165 | <<locked>> | 98% | 55,071 psi | 86% | 2936 fps | 99.3% |
| Vihtavuori N540 | <<locked>> | 82% | 57,319 psi | 90% | 2871 fps | 100% |
| Vihtavuori N550 | <<locked>> | 88% | 54,926 psi | 86% | 2940 fps | 100% |
| Vihtavuori N555 | <<locked>> | 96% | 56,492 psi | 89% | 3005 fps | 100% |
| Vihtavuori N560 | <<locked>> | 96% | 57,072 psi | 89% | 3081 fps | 98% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 52,475 psi | 82% | 2986 fps | 97.4% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 55,274 psi | 87% | 2894 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 57,377 psi | 90% | 3015 fps | 99.8% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 55,274 psi | 87% | 3117 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 55,579 psi | 87% | 2953 fps | 98.9% |
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% | 53,780 psi | 84% | 2854 fps | 99.2% |
| Accurate 3100 | <<locked>> | 82% | 32,808 psi | 51% | 2503 fps | 95.8% |
| Accurate 4064 | <<locked>> | 80% | 53,388 psi | 84% | 2831 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 41,640 psi | 65% | 2720 fps | 99.5% |
| Accurate High Country | 64.8 gr | 88% | 44,338 psi | 69% | 2861 fps | 95.8% |
| Accurate MAGPRO | <<locked>> | 92% | 48,341 psi | 76% | 2930 fps | 95.5% |
| ADI AR 2208 | <<locked>> | 80% | 50,241 psi | 79% | 2818 fps | 100% |
| ADI AR 2209 | <<locked>> | 84% | 40,205 psi | 63% | 2707 fps | 95.5% |
| ADI AR 2213 | <<locked>> | 90% | 43,801 psi | 69% | 2815 fps | 95.2% |
| ADI AR 2225 | <<locked>> | 96% | 34,664 psi | 54% | 2644 fps | 95.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 51,053 psi | 80% | 2841 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 40,263 psi | 63% | 2730 fps | 99.6% |
| Alliant Reloder-17 | <<locked>> | 80% | 46,282 psi | 73% | 2858 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 84% | 40,030 psi | 63% | 2700 fps | 95.5% |
| Alliant Reloder-22 | <<locked>> | 88% | 40,596 psi | 64% | 2756 fps | 95.9% |
| Alliant Reloder-23 | <<locked>> | 80% | 29,457 psi | 46% | 2474 fps | 98.1% |
| Alliant Reloder-25 | <<locked>> | 86% | 31,517 psi | 49% | 2552 fps | 95.9% |
| Alliant Reloder-26 | 60.7 gr | 80% | 31,908 psi | 50% | 2602 fps | 96.9% |
| Bofors RP15 | <<locked>> | 90% | 40,045 psi | 63% | 2740 fps | 95.5% |
| Bofors RP3 | <<locked>> | 80% | 51,764 psi | 81% | 2854 fps | 100% |
| Bofors RP30 | <<locked>> | 98% | 42,960 psi | 67% | 2835 fps | 95.8% |
| Bofors RP5 | <<locked>> | 88% | 40,596 psi | 64% | 2756 fps | 95.9% |
| Bofors RP7 | <<locked>> | 80% | 45,034 psi | 71% | 2733 fps | 97.9% |
| Hodgdon H1000 | <<locked>> | 96% | 43,004 psi | 67% | 2792 fps | 95.9% |
| Hodgdon H380 | <<locked>> | 80% | 51,967 psi | 81% | 2871 fps | 100% |
| Hodgdon H414 | <<locked>> | 80% | 43,555 psi | 68% | 2769 fps | 98.1% |
| Hodgdon H4350 | <<locked>> | 80% | 46,456 psi | 73% | 2792 fps | 97.6% |
| Hodgdon H4831 | <<locked>> | 90% | 46,876 psi | 73% | 2822 fps | 95.5% |
| Hodgdon H4831 SC | <<locked>> | 90% | 45,977 psi | 72% | 2805 fps | 95.2% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 37,739 psi | 59% | 2615 fps | 99.8% |
| Hodgdon Retumbo | <<locked>> | 92% | 37,521 psi | 59% | 2756 fps | 95.2% |
| Hodgdon Superformance | <<locked>> | 80% | 42,830 psi | 67% | 2789 fps | 97.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,354 psi | 43% | 1650 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 52,881 psi | 83% | 2851 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 40,756 psi | 64% | 2661 fps | 96.9% |
| IMR 4451 Enduron | <<locked>> | 80% | 46,601 psi | 73% | 2766 fps | 98.6% |
| IMR 4831 | <<locked>> | 80% | 39,827 psi | 62% | 2671 fps | 99.3% |
| IMR 4955 Enduron | <<locked>> | 88% | 45,687 psi | 72% | 2762 fps | 95.4% |
| IMR 7828 SSC | <<locked>> | 92% | 44,860 psi | 70% | 2848 fps | 95.7% |
| Lovex S062 | <<locked>> | 80% | 53,084 psi | 83% | 2844 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 43,874 psi | 69% | 2707 fps | 99.1% |
| Lovex S070 | <<locked>> | 80% | 42,322 psi | 66% | 2697 fps | 98% |
| Lovex S071 | <<locked>> | 86% | 31,981 psi | 50% | 2480 fps | 95.5% |
| Norma 203B | <<locked>> | 80% | 53,969 psi | 85% | 2904 fps | 100% |
| Norma 204 | <<locked>> | 80% | 40,393 psi | 63% | 2690 fps | 95.4% |
| Norma MRP | 60.4 gr | 82% | 34,447 psi | 54% | 2635 fps | 95% |
| Norma URP | <<locked>> | 80% | 41,292 psi | 65% | 2713 fps | 99.4% |
| Ramshot Grand | <<locked>> | 92% | 44,831 psi | 70% | 2861 fps | 96.1% |
| Ramshot Hunter | <<locked>> | 80% | 40,089 psi | 63% | 2703 fps | 98% |
| Ramshot Magnum | <<locked>> | 90% | 36,869 psi | 58% | 2661 fps | 95.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,963 psi | 44% | 1690 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 51,750 psi | 81% | 2858 fps | 99.6% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 49,168 psi | 77% | 2907 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 41,669 psi | 65% | 2743 fps | 99.3% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 40,205 psi | 63% | 2756 fps | 99% |
| ReloadSwiss RS 76 | <<locked>> | 90% | 34,360 psi | 54% | 2667 fps | 95% |
| Rottweil R 903 | <<locked>> | 80% | 48,791 psi | 76% | 2802 fps | 100% |
| Rottweil R 904 | <<locked>> | 86% | 44,338 psi | 69% | 2746 fps | 95.6% |
| Rottweil R 905 | <<locked>> | 84% | 39,073 psi | 61% | 2680 fps | 95.4% |
| Rottweil R 907 | <<locked>> | 80% | 45,034 psi | 71% | 2733 fps | 97.9% |
| Shooters World Long Rifle | <<locked>> | 80% | 43,874 psi | 69% | 2707 fps | 99.1% |
| Shooters World Precision | <<locked>> | 80% | 53,084 psi | 83% | 2844 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 42,322 psi | 66% | 2697 fps | 98% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 50,154 psi | 79% | 2858 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 49,472 psi | 78% | 2694 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 43,047 psi | 67% | 2657 fps | 98.1% |
| SNPE Vectan Tubal 8000 | <<locked>> | 84% | 38,725 psi | 61% | 2674 fps | 95.3% |
| Somchem S355 | <<locked>> | 80% | 48,689 psi | 76% | 2799 fps | 100% |
| Somchem S361 | <<locked>> | 86% | 45,484 psi | 71% | 2736 fps | 95% |
| Somchem S365 | <<locked>> | 80% | 37,971 psi | 60% | 2671 fps | 100% |
| Somchem S385 | <<locked>> | 82% | 37,072 psi | 58% | 2605 fps | 95.6% |
| Vihtavuori N150 | <<locked>> | 80% | 46,775 psi | 73% | 2726 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 42,728 psi | 67% | 2713 fps | 99.5% |
| Vihtavuori N165 | <<locked>> | 86% | 36,680 psi | 57% | 2589 fps | 95.1% |
| Vihtavuori N540 | <<locked>> | 80% | 53,838 psi | 84% | 2825 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 42,047 psi | 66% | 2710 fps | 99.4% |
| Vihtavuori N555 | <<locked>> | 80% | 33,040 psi | 52% | 2559 fps | 98.1% |
| Vihtavuori N560 | <<locked>> | 90% | 46,224 psi | 72% | 2887 fps | 95.6% |
| Vihtavuori N565 | <<locked>> | 96% | 45,658 psi | 72% | 2858 fps | 95.7% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 41,843 psi | 66% | 2677 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 43,758 psi | 69% | 2776 fps | 98.2% |
| Winchester StaBALL HD | <<locked>> | 80% | 26,005 psi | 41% | 2457 fps | 97.5% |
| Winchester Supreme 780 | <<locked>> | 86% | 39,059 psi | 61% | 2648 fps | 95.2% |
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 83 powders for 7 mm Weath. Mag. loaded with the .284 | 150gr | Barnes TTSX BT. Winchester StaBALL HD delivers the highest muzzle velocity at 3,117 fps; across all powders the maximum-charge window runs from 1,847 fps to 3,117 fps. ADI AR 2225 gives the best case fill at 100 %, and 83 of the 83 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 58–90 %, leaving at least 10 % headroom. The 150.0 gr projectile in 0.284" calls for a 1:11.5 twist; slower twists will usually not stabilise this weight. ADI AR 2225, 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. Alliant Reloder-26, Accurate High Country, Norma MRP rank at the top here: for 7 mm Weath. Mag. with the .284 | 150gr | 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.