Load Specifications
Load data in caliber 7 mm Weath. Mag. with .284 | 152gr | Barnes LRX 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, Norma MRP and Vihtavuori N560.
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% | 57,711 psi | 90% | 2897 fps | 99.6% |
| Accurate 3100 | <<locked>> | 98% | 57,319 psi | 90% | 2953 fps | 100% |
| Accurate 4064 | <<locked>> | 82% | 57,319 psi | 90% | 2867 fps | 100% |
| Accurate 4350 | <<locked>> | 88% | 55,201 psi | 87% | 2940 fps | 100% |
| Accurate MAGPRO | <<locked>> | 96% | 56,275 psi | 88% | 3051 fps | 97.4% |
| ADI AR 2208 | <<locked>> | 84% | 57,203 psi | 90% | 2907 fps | 100% |
| ADI AR 2209 | <<locked>> | 94% | 56,492 psi | 89% | 2995 fps | 99.1% |
| ADI AR 2213 | <<locked>> | 96% | 54,128 psi | 85% | 2995 fps | 98% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 45,049 psi | 71% | 2815 fps | 96% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 39,726 psi | 62% | 2766 fps | 97.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 54,795 psi | 86% | 2881 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 90% | 56,449 psi | 88% | 2999 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 84% | 53,780 psi | 84% | 2959 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 94% | 55,753 psi | 87% | 2982 fps | 99.1% |
| Alliant Reloder-22 | <<locked>> | 98% | 57,493 psi | 90% | 3048 fps | 99.4% |
| Alliant Reloder-23 | <<locked>> | 98% | 54,491 psi | 85% | 2966 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 50,459 psi | 79% | 2966 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 94% | 54,955 psi | 86% | 3054 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 56,333 psi | 88% | 3028 fps | 99.2% |
| Bofors RP3 | <<locked>> | 82% | 55,434 psi | 87% | 2890 fps | 100% |
| Bofors RP30ᴾ | <<locked>> | 100% | 46,137 psi | 72% | 2884 fps | 96.9% |
| Bofors RP5 | <<locked>> | 98% | 57,493 psi | 90% | 3048 fps | 99.4% |
| Bofors RP7 | <<locked>> | 86% | 54,781 psi | 86% | 2887 fps | 99.4% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 49,632 psi | 78% | 2910 fps | 97.9% |
| Hodgdon H380 | <<locked>> | 82% | 55,869 psi | 88% | 2917 fps | 100% |
| Hodgdon H414 | <<locked>> | 88% | 57,334 psi | 90% | 2995 fps | 99.9% |
| Hodgdon H4350 | <<locked>> | 86% | 56,753 psi | 89% | 2956 fps | 99.3% |
| Hodgdon H4831 | <<locked>> | 94% | 54,186 psi | 85% | 2933 fps | 97.3% |
| Hodgdon H4831 SC | <<locked>> | 96% | 56,898 psi | 89% | 2979 fps | 97.8% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 56,565 psi | 89% | 2917 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 49,284 psi | 77% | 3015 fps | 99.1% |
| Hodgdon Superformance | <<locked>> | 86% | 54,041 psi | 85% | 2976 fps | 99.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,651 psi | 57% | 1831 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 56,492 psi | 89% | 2887 fps | 100% |
| IMR 4350 | <<locked>> | 90% | 56,318 psi | 88% | 2927 fps | 99.6% |
| IMR 4451 Enduron | <<locked>> | 86% | 56,434 psi | 88% | 2917 fps | 99.7% |
| IMR 4831 | <<locked>> | 90% | 55,709 psi | 87% | 2933 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 55,492 psi | 87% | 2920 fps | 97.7% |
| IMR 7828 SSC | <<locked>> | 98% | 55,332 psi | 87% | 3028 fps | 98.3% |
| Lovex S062 | <<locked>> | 82% | 56,913 psi | 89% | 2881 fps | 100% |
| Lovex S065 | <<locked>> | 88% | 56,768 psi | 89% | 2913 fps | 100% |
| Lovex S070 | <<locked>> | 88% | 54,868 psi | 86% | 2907 fps | 99.8% |
| Lovex S071ᴾ | <<locked>> | 100% | 50,923 psi | 80% | 2854 fps | 99.8% |
| Norma 203B | <<locked>> | 82% | 57,638 psi | 90% | 2936 fps | 100% |
| Norma 204 | <<locked>> | 90% | 57,377 psi | 90% | 2986 fps | 99.1% |
| Norma MRP | <<locked>> | 96% | 57,450 psi | 90% | 3074 fps | 99.9% |
| Norma URP | <<locked>> | 90% | 57,522 psi | 90% | 2976 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 56,086 psi | 88% | 3048 fps | 98.7% |
| Ramshot Hunter | <<locked>> | 90% | 56,579 psi | 89% | 2986 fps | 100% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 54,172 psi | 85% | 2982 fps | 99.5% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,478 psi | 59% | 1877 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 55,492 psi | 87% | 2900 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 57,276 psi | 90% | 3005 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 55,463 psi | 87% | 2963 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 57,711 psi | 90% | 3051 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 49,719 psi | 78% | 3015 fps | 99.7% |
| Rottweil R 903 | <<locked>> | 84% | 55,825 psi | 87% | 2894 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 54,172 psi | 85% | 2907 fps | 98% |
| Rottweil R 905 | <<locked>> | 94% | 55,100 psi | 86% | 2969 fps | 99.1% |
| Rottweil R 907 | <<locked>> | 86% | 54,781 psi | 86% | 2887 fps | 99.4% |
| Shooters World Long Rifle | <<locked>> | 88% | 56,768 psi | 89% | 2913 fps | 100% |
| Shooters World Precision | <<locked>> | 82% | 56,913 psi | 89% | 2881 fps | 100% |
| Shooters World SW4350 | <<locked>> | 88% | 54,868 psi | 86% | 2907 fps | 99.8% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 57,479 psi | 90% | 2953 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 56,173 psi | 88% | 2769 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 56,275 psi | 88% | 2867 fps | 99.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 54,650 psi | 86% | 2966 fps | 99% |
| Somchem S355 | <<locked>> | 84% | 55,477 psi | 87% | 2884 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 55,680 psi | 87% | 2897 fps | 97.5% |
| Somchem S365 | <<locked>> | 90% | 53,998 psi | 85% | 2927 fps | 100% |
| Somchem S385 | <<locked>> | 94% | 55,521 psi | 87% | 2940 fps | 99.5% |
| Vihtavuori N150 | <<locked>> | 86% | 57,014 psi | 89% | 2861 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 55,869 psi | 88% | 2920 fps | 100% |
| Vihtavuori N165 | <<locked>> | 98% | 55,085 psi | 86% | 2917 fps | 99.3% |
| Vihtavuori N540 | <<locked>> | 82% | 57,667 psi | 90% | 2858 fps | 100% |
| Vihtavuori N550 | <<locked>> | 88% | 55,129 psi | 86% | 2923 fps | 100% |
| Vihtavuori N555 | <<locked>> | 96% | 56,797 psi | 89% | 2992 fps | 100% |
| Vihtavuori N560 | <<locked>> | 96% | 57,406 psi | 90% | 3068 fps | 98.2% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 52,605 psi | 82% | 2969 fps | 97.5% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 55,550 psi | 87% | 2877 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 57,595 psi | 90% | 3002 fps | 99.9% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 55,419 psi | 87% | 3100 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 55,927 psi | 88% | 2940 fps | 99% |
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% | 54,114 psi | 85% | 2841 fps | 99.3% |
| Accurate 3100 | <<locked>> | 80% | 30,661 psi | 48% | 2431 fps | 95% |
| Accurate 4064 | <<locked>> | 80% | 53,693 psi | 84% | 2815 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 41,742 psi | 65% | 2707 fps | 99.6% |
| Accurate MAGPRO | <<locked>> | 92% | 48,646 psi | 76% | 2917 fps | 95.7% |
| ADI AR 2208 | <<locked>> | 80% | 50,531 psi | 79% | 2805 fps | 100% |
| ADI AR 2209 | <<locked>> | 84% | 40,277 psi | 63% | 2694 fps | 95.7% |
| ADI AR 2213 | <<locked>> | 90% | 43,990 psi | 69% | 2799 fps | 95.4% |
| ADI AR 2217 | <<locked>> | 98% | 42,061 psi | 66% | 2753 fps | 95% |
| ADI AR 2225 | <<locked>> | 96% | 34,882 psi | 55% | 2635 fps | 95.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 51,329 psi | 80% | 2825 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 40,335 psi | 63% | 2717 fps | 99.6% |
| Alliant Reloder-17 | <<locked>> | 80% | 46,659 psi | 73% | 2844 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 84% | 40,118 psi | 63% | 2687 fps | 95.7% |
| Alliant Reloder-22 | <<locked>> | 86% | 38,072 psi | 60% | 2680 fps | 95.1% |
| Alliant Reloder-23 | <<locked>> | 80% | 29,689 psi | 47% | 2467 fps | 98.3% |
| Alliant Reloder-25 | <<locked>> | 86% | 31,633 psi | 50% | 2543 fps | 96.1% |
| Alliant Reloder-26 | 60.3 gr | 80% | 32,053 psi | 50% | 2589 fps | 97.1% |
| Bofors RP15 | <<locked>> | 90% | 40,205 psi | 63% | 2726 fps | 95.7% |
| Bofors RP3 | <<locked>> | 80% | 51,880 psi | 81% | 2838 fps | 100% |
| Bofors RP30 | <<locked>> | 96% | 40,132 psi | 63% | 2759 fps | 95% |
| Bofors RP5 | <<locked>> | 86% | 38,072 psi | 60% | 2680 fps | 95.1% |
| Bofors RP7 | <<locked>> | 80% | 45,266 psi | 71% | 2720 fps | 98.1% |
| Hodgdon H1000 | <<locked>> | 94% | 40,379 psi | 63% | 2717 fps | 95.1% |
| Hodgdon H380 | <<locked>> | 80% | 52,069 psi | 82% | 2854 fps | 100% |
| Hodgdon H414 | <<locked>> | 80% | 43,845 psi | 69% | 2759 fps | 98.3% |
| Hodgdon H4350 | <<locked>> | 80% | 46,543 psi | 73% | 2779 fps | 97.7% |
| Hodgdon H4831 | <<locked>> | 90% | 47,079 psi | 74% | 2812 fps | 95.7% |
| Hodgdon H4831 SC | <<locked>> | 90% | 46,166 psi | 72% | 2792 fps | 95.4% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 38,014 psi | 60% | 2605 fps | 99.8% |
| Hodgdon Retumbo | <<locked>> | 92% | 37,710 psi | 59% | 2749 fps | 95.5% |
| Hodgdon Superformance | <<locked>> | 80% | 43,004 psi | 67% | 2776 fps | 97.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,412 psi | 43% | 1637 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 53,185 psi | 83% | 2838 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 40,799 psi | 64% | 2648 fps | 97% |
| IMR 4451 Enduron | <<locked>> | 80% | 46,644 psi | 73% | 2746 fps | 98.7% |
| IMR 4831 | <<locked>> | 80% | 39,900 psi | 63% | 2654 fps | 99.4% |
| IMR 4955 Enduron | <<locked>> | 88% | 45,832 psi | 72% | 2749 fps | 95.5% |
| IMR 7828 SSC | <<locked>> | 92% | 45,063 psi | 71% | 2835 fps | 95.9% |
| Lovex S062 | <<locked>> | 80% | 53,374 psi | 84% | 2828 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 44,150 psi | 69% | 2697 fps | 99.2% |
| Lovex S070 | <<locked>> | 80% | 42,351 psi | 66% | 2680 fps | 98.1% |
| Lovex S071 | <<locked>> | 86% | 32,082 psi | 50% | 2470 fps | 95.7% |
| Norma 203B | <<locked>> | 80% | 54,041 psi | 85% | 2884 fps | 100% |
| Norma 204 | <<locked>> | 80% | 40,480 psi | 63% | 2677 fps | 95.6% |
| Norma MRP | 60 gr | 82% | 34,548 psi | 54% | 2621 fps | 95.3% |
| Norma URP | <<locked>> | 80% | 41,379 psi | 65% | 2700 fps | 99.5% |
| Ramshot Grand | <<locked>> | 90% | 41,785 psi | 65% | 2779 fps | 95.2% |
| Ramshot Hunter | <<locked>> | 80% | 40,161 psi | 63% | 2687 fps | 98.1% |
| Ramshot Magnum | <<locked>> | 90% | 37,086 psi | 58% | 2651 fps | 95.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,021 psi | 44% | 1680 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 52,098 psi | 82% | 2844 fps | 99.7% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 49,559 psi | 78% | 2894 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 41,771 psi | 65% | 2726 fps | 99.4% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 40,321 psi | 63% | 2743 fps | 99.1% |
| ReloadSwiss RS 76 | <<locked>> | 90% | 34,403 psi | 54% | 2654 fps | 95.2% |
| Rottweil R 903 | <<locked>> | 80% | 48,849 psi | 77% | 2785 fps | 100% |
| Rottweil R 904 | <<locked>> | 86% | 44,657 psi | 70% | 2736 fps | 95.8% |
| Rottweil R 905 | <<locked>> | 84% | 39,363 psi | 62% | 2671 fps | 95.6% |
| Rottweil R 907 | <<locked>> | 80% | 45,266 psi | 71% | 2720 fps | 98.1% |
| Shooters World Long Rifle | <<locked>> | 80% | 44,150 psi | 69% | 2697 fps | 99.2% |
| Shooters World Precision | <<locked>> | 80% | 53,374 psi | 84% | 2828 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 42,351 psi | 66% | 2680 fps | 98.1% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 50,256 psi | 79% | 2841 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 49,705 psi | 78% | 2677 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 43,091 psi | 68% | 2641 fps | 98.2% |
| SNPE Vectan Tubal 8000 | <<locked>> | 84% | 39,030 psi | 61% | 2667 fps | 95.5% |
| Somchem S355 | <<locked>> | 80% | 48,950 psi | 77% | 2782 fps | 100% |
| Somchem S361 | <<locked>> | 86% | 45,672 psi | 72% | 2723 fps | 95.2% |
| Somchem S365 | <<locked>> | 80% | 38,043 psi | 60% | 2654 fps | 100% |
| Somchem S385 | <<locked>> | 82% | 37,159 psi | 58% | 2592 fps | 95.8% |
| Vihtavuori N150 | <<locked>> | 80% | 46,833 psi | 73% | 2710 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 42,786 psi | 67% | 2697 fps | 99.6% |
| Vihtavuori N165 | <<locked>> | 86% | 36,796 psi | 58% | 2575 fps | 95.3% |
| Vihtavuori N540 | <<locked>> | 80% | 53,911 psi | 84% | 2805 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 42,119 psi | 66% | 2697 fps | 99.4% |
| Vihtavuori N555 | <<locked>> | 80% | 33,112 psi | 52% | 2543 fps | 98.2% |
| Vihtavuori N560 | 65.9 gr | 90% | 46,441 psi | 73% | 2874 fps | 95.8% |
| Vihtavuori N565 | <<locked>> | 96% | 45,934 psi | 72% | 2848 fps | 95.9% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 41,959 psi | 66% | 2664 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 43,845 psi | 69% | 2759 fps | 98.3% |
| Winchester StaBALL HD | <<locked>> | 80% | 26,092 psi | 41% | 2448 fps | 97.7% |
| Winchester Supreme 780 | <<locked>> | 86% | 39,189 psi | 61% | 2635 fps | 95.4% |
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 | 152gr | Barnes LRX BT. Winchester StaBALL HD delivers the highest muzzle velocity at 3,100 fps; across all powders the maximum-charge window runs from 1,831 fps to 3,100 fps. ADI AR 2217 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 57–90 %, leaving at least 10 % headroom. The 152.0 gr projectile in 0.284" calls for a 1:9.0 twist; slower twists will usually not stabilise this weight. ADI AR 2217, ADI AR 2225, Alliant Reloder-25 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, Norma MRP, Vihtavuori N560 rank at the top here: for 7 mm Weath. Mag. with the .284 | 152gr | Barnes LRX 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.