Load Specifications
Bullet:.284 | 139gr | Barnes LRX BT
Bullet Manufacturer:Barnes
Bullet Weight:139 gr
Bullet Diameter:0.284"
Bullet Length:<<locked>>
Caliber:7 mm WSM load data
Case Length (l3):2.09"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:81.1 Grains of Water
Primer Size:Large Rifle Magnum (LRM)
Barrel Length:24"
Max. allowed Pressure:63,817 psi
Recommended Twist Rate:1:9.5
Load data in caliber 7 mm WSM with .284 | 139gr | Barnes LRX BT bullet and 103 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 70, Alliant Reloder-16 and Alliant Reloder-26.
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 2495 | <<locked>> | 84% | 56,478 psi | 89% | 2917 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 54,578 psi | 86% | 2936 fps | 98.4% |
| Accurate 3100ᴾ | <<locked>> | 100% | 51,909 psi | 81% | 2972 fps | 99.3% |
| Accurate 4064 | <<locked>> | 86% | 56,666 psi | 89% | 2972 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 54,230 psi | 85% | 3031 fps | 100% |
| ADI AR 2206H | <<locked>> | 82% | 56,057 psi | 88% | 3005 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 57,566 psi | 90% | 3015 fps | 100% |
| ADI AR 2209 | <<locked>> | 98% | 55,492 psi | 87% | 3074 fps | 97.9% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 53,243 psi | 83% | 3061 fps | 96.2% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 56,971 psi | 89% | 3143 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 54,505 psi | 85% | 2982 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 54,984 psi | 86% | 3009 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 94% | 55,288 psi | 87% | 3094 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 90% | 56,536 psi | 89% | 3120 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 98% | 54,853 psi | 86% | 3064 fps | 97.9% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 51,880 psi | 81% | 3058 fps | 97.5% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 48,950 psi | 77% | 2995 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 42,467 psi | 67% | 2904 fps | 98.5% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 56,623 psi | 89% | 3199 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 56,289 psi | 88% | 3028 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 47,529 psi | 74% | 2976 fps | 96.4% |
| Bofors RP3 | <<locked>> | 86% | 55,419 psi | 87% | 2999 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 51,880 psi | 81% | 3058 fps | 97.5% |
| Bofors RP7 | <<locked>> | 90% | 54,940 psi | 86% | 2982 fps | 98.6% |
| Hodgdon H380 | <<locked>> | 86% | 55,956 psi | 88% | 3018 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 92% | 56,637 psi | 89% | 3087 fps | 99.3% |
| Hodgdon H4350 | <<locked>> | 90% | 56,550 psi | 89% | 3045 fps | 98.4% |
| Hodgdon H4831ᴾ | <<locked>> | 100% | 57,101 psi | 89% | 3068 fps | 96.4% |
| Hodgdon H4831 SCᴾ | <<locked>> | 100% | 55,941 psi | 88% | 3051 fps | 96.1% |
| Hodgdon H4895 | <<locked>> | 82% | 56,681 psi | 89% | 3015 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 55,347 psi | 87% | 3012 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 57,334 psi | 90% | 3058 fps | 100% |
| Hodgdon Superformance | <<locked>> | 92% | 57,363 psi | 90% | 3130 fps | 99.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,143 psi | 57% | 1877 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 54,505 psi | 85% | 2969 fps | 100% |
| IMR 3031 | <<locked>> | 82% | 57,421 psi | 90% | 2992 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 56,913 psi | 89% | 2995 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 84% | 56,202 psi | 88% | 2982 fps | 99.1% |
| IMR 4350 | <<locked>> | 94% | 56,101 psi | 88% | 3018 fps | 98.8% |
| IMR 4451 Enduron | <<locked>> | 90% | 56,826 psi | 89% | 3015 fps | 99.2% |
| IMR 4831 | <<locked>> | 94% | 54,795 psi | 86% | 3022 fps | 100% |
| IMR 4895 | <<locked>> | 84% | 56,449 psi | 88% | 3038 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 98% | 54,998 psi | 86% | 2999 fps | 96.1% |
| Lovex D073.6 | <<locked>> | 82% | 56,608 psi | 89% | 2979 fps | 100% |
| Lovex S060 | <<locked>> | 82% | 55,085 psi | 86% | 2930 fps | 100% |
| Lovex S062 | <<locked>> | 86% | 56,840 psi | 89% | 2986 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 56,652 psi | 89% | 3009 fps | 99.8% |
| Lovex S070 | <<locked>> | 92% | 54,302 psi | 85% | 2992 fps | 99.1% |
| Lovex S071ᴾ | <<locked>> | 100% | 42,989 psi | 67% | 2812 fps | 97.8% |
| Norma 201 | <<locked>> | 82% | 54,766 psi | 86% | 2946 fps | 100% |
| Norma 202 | <<locked>> | 82% | 55,622 psi | 87% | 2946 fps | 100% |
| Norma 203B | <<locked>> | 84% | 54,288 psi | 85% | 2995 fps | 100% |
| Norma 204 | <<locked>> | 94% | 56,942 psi | 89% | 3074 fps | 98% |
| Norma MRPᴾ | <<locked>> | 100% | 55,158 psi | 86% | 3146 fps | 99.2% |
| Norma URP | <<locked>> | 94% | 56,695 psi | 89% | 3071 fps | 100% |
| Ramshot Big Game | <<locked>> | 84% | 54,969 psi | 86% | 3018 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 50,937 psi | 80% | 3045 fps | 96.1% |
| Ramshot Hunter | <<locked>> | 94% | 55,680 psi | 87% | 3074 fps | 99.6% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 45,121 psi | 71% | 2907 fps | 96.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,680 psi | 57% | 1919 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 55,869 psi | 88% | 3002 fps | 99.4% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 55,941 psi | 88% | 3077 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 56,202 psi | 88% | 3114 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 54,331 psi | 85% | 3054 fps | 99.9% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 56,840 psi | 89% | 3146 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 41,597 psi | 65% | 2917 fps | 96.4% |
| Rottweil R 902 | <<locked>> | 84% | 55,448 psi | 87% | 2949 fps | 100% |
| Rottweil R 903 | <<locked>> | 88% | 55,274 psi | 87% | 2992 fps | 100% |
| Rottweil R 904 | <<locked>> | 98% | 57,348 psi | 90% | 3048 fps | 97.2% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 57,711 psi | 90% | 3107 fps | 98.5% |
| Rottweil R 907 | <<locked>> | 90% | 54,940 psi | 86% | 2982 fps | 98.6% |
| Shooters World Long Rifle | <<locked>> | 92% | 56,652 psi | 89% | 3009 fps | 99.8% |
| Shooters World Match Rifle | <<locked>> | 82% | 56,608 psi | 89% | 2979 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 56,840 psi | 89% | 2986 fps | 100% |
| Shooters World SW4350 | <<locked>> | 92% | 54,302 psi | 85% | 2992 fps | 99.1% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 57,217 psi | 90% | 3058 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 57,392 psi | 90% | 3012 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 54,723 psi | 86% | 2979 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 55,622 psi | 87% | 2877 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 56,608 psi | 89% | 2877 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 56,434 psi | 88% | 2959 fps | 99.2% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 57,217 psi | 90% | 3104 fps | 98.4% |
| Somchem S335 | <<locked>> | 82% | 55,405 psi | 87% | 2874 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 57,246 psi | 90% | 2999 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 55,376 psi | 87% | 2989 fps | 100% |
| Somchem S361 | <<locked>> | 96% | 55,608 psi | 87% | 2979 fps | 96% |
| Somchem S365 | <<locked>> | 96% | 55,811 psi | 87% | 3071 fps | 100% |
| Somchem S385 | <<locked>> | 98% | 54,592 psi | 86% | 3022 fps | 98.6% |
| Vihtavuori N133 | <<locked>> | 82% | 56,188 psi | 88% | 2858 fps | 100% |
| Vihtavuori N135 | <<locked>> | 84% | 55,854 psi | 88% | 2907 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 56,347 psi | 88% | 2923 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 56,811 psi | 89% | 2966 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 55,376 psi | 87% | 3012 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 50,372 psi | 79% | 2933 fps | 97.6% |
| Vihtavuori N540 | <<locked>> | 84% | 54,259 psi | 85% | 2917 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 54,433 psi | 85% | 3018 fps | 99.9% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 54,636 psi | 86% | 3074 fps | 100% |
| Vihtavuori N560ᴾ | <<locked>> | 100% | 55,550 psi | 87% | 3133 fps | 96.5% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 54,998 psi | 86% | 2979 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 56,884 psi | 89% | 3091 fps | 99.3% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 44,005 psi | 69% | 3045 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 82% | 54,955 psi | 86% | 2986 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 54,984 psi | 86% | 3018 fps | 97.8% |
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% | 49,342 psi | 77% | 2815 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 47,790 psi | 75% | 2822 fps | 97.2% |
| Accurate 3100 | <<locked>> | 88% | 34,098 psi | 53% | 2615 fps | 95% |
| Accurate 4064 | <<locked>> | 80% | 46,746 psi | 73% | 2822 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 35,331 psi | 55% | 2661 fps | 97.2% |
| ADI AR 2206H | <<locked>> | 80% | 52,576 psi | 82% | 2953 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 44,715 psi | 70% | 2795 fps | 99.5% |
| ADI AR 2209 | <<locked>> | 92% | 45,643 psi | 72% | 2894 fps | 95.7% |
| ADI AR 2213 | <<locked>> | 98% | 49,748 psi | 78% | 2999 fps | 95.3% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 49,240 psi | 77% | 3015 fps | 99.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 45,049 psi | 71% | 2822 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 48,080 psi | 75% | 2890 fps | 99.9% |
| Alliant Reloder-16 | 50.9 gr | 80% | 34,983 psi | 55% | 2680 fps | 97.4% |
| Alliant Reloder-17 | <<locked>> | 80% | 39,610 psi | 62% | 2815 fps | 99.7% |
| Alliant Reloder-19 | <<locked>> | 92% | 45,049 psi | 71% | 2881 fps | 95.7% |
| Alliant Reloder-22 | <<locked>> | 94% | 42,409 psi | 66% | 2871 fps | 95% |
| Alliant Reloder-23 | <<locked>> | 82% | 27,006 psi | 42% | 2470 fps | 95.4% |
| Alliant Reloder-25 | <<locked>> | 94% | 35,085 psi | 55% | 2717 fps | 95.9% |
| Alliant Reloder-26 | 60.4 gr | 86% | 33,446 psi | 52% | 2720 fps | 96.2% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 52,562 psi | 82% | 2966 fps | 99.9% |
| Bofors RP15 | <<locked>> | 98% | 44,454 psi | 70% | 2913 fps | 95.5% |
| Bofors RP3 | <<locked>> | 80% | 45,107 psi | 71% | 2828 fps | 100% |
| Bofors RP5 | <<locked>> | 94% | 42,409 psi | 66% | 2871 fps | 95% |
| Bofors RP7 | <<locked>> | 80% | 39,900 psi | 63% | 2694 fps | 95.2% |
| Hodgdon H380 | <<locked>> | 80% | 45,716 psi | 72% | 2841 fps | 99.1% |
| Hodgdon H414 | <<locked>> | 80% | 37,637 psi | 59% | 2717 fps | 95.1% |
| Hodgdon H4350 | <<locked>> | 82% | 43,482 psi | 68% | 2805 fps | 95.5% |
| Hodgdon H4831 | <<locked>> | 98% | 53,374 psi | 84% | 3009 fps | 95.6% |
| Hodgdon H4831 SC | <<locked>> | 98% | 52,243 psi | 82% | 2989 fps | 95.3% |
| Hodgdon H4895 | <<locked>> | 80% | 53,200 psi | 83% | 2959 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 32,271 psi | 51% | 2569 fps | 98% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 50,067 psi | 78% | 2943 fps | 100% |
| Hodgdon Superformance | <<locked>> | 82% | 39,566 psi | 62% | 2792 fps | 95.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,934 psi | 42% | 1677 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 51,082 psi | 80% | 2913 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 53,925 psi | 85% | 2943 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 47,021 psi | 74% | 2835 fps | 99.8% |
| IMR 4166 Enduron | <<locked>> | 80% | 49,516 psi | 78% | 2867 fps | 98.2% |
| IMR 4350 | <<locked>> | 84% | 40,712 psi | 64% | 2730 fps | 95.5% |
| IMR 4451 Enduron | <<locked>> | 80% | 41,379 psi | 65% | 2726 fps | 96.2% |
| IMR 4831 | <<locked>> | 80% | 34,214 psi | 54% | 2618 fps | 96.9% |
| IMR 4895 | <<locked>> | 80% | 49,342 psi | 77% | 2923 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 51,590 psi | 81% | 2943 fps | 95.4% |
| Lovex D073.6 | <<locked>> | 80% | 52,736 psi | 83% | 2923 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 51,706 psi | 81% | 2877 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 47,079 psi | 74% | 2831 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 38,740 psi | 61% | 2674 fps | 96.9% |
| Lovex S070 | <<locked>> | 80% | 36,999 psi | 58% | 2648 fps | 95.1% |
| Lovex S071 | <<locked>> | 94% | 35,012 psi | 55% | 2635 fps | 95.3% |
| Norma 201 | <<locked>> | 80% | 51,329 psi | 80% | 2894 fps | 100% |
| Norma 202 | <<locked>> | 80% | 52,127 psi | 82% | 2894 fps | 100% |
| Norma 203B | <<locked>> | 80% | 47,413 psi | 74% | 2877 fps | 99.9% |
| Norma 204 | <<locked>> | 88% | 46,137 psi | 72% | 2881 fps | 95.7% |
| Norma MRP | <<locked>> | 90% | 38,667 psi | 61% | 2818 fps | 95.3% |
| Norma URP | <<locked>> | 80% | 35,563 psi | 56% | 2667 fps | 97.2% |
| Ramshot Big Game | <<locked>> | 80% | 47,761 psi | 75% | 2897 fps | 99.9% |
| Ramshot Grand | <<locked>> | 98% | 47,181 psi | 74% | 2972 fps | 95% |
| Ramshot Hunter | <<locked>> | 82% | 36,941 psi | 58% | 2710 fps | 95.9% |
| Ramshot Magnum | <<locked>> | 98% | 41,829 psi | 66% | 2838 fps | 95.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,282 psi | 43% | 1716 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 45,701 psi | 72% | 2822 fps | 98% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 51,996 psi | 81% | 3015 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 42,148 psi | 66% | 2877 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 35,215 psi | 55% | 2680 fps | 96.9% |
| ReloadSwiss RS 70 | 55.6 gr | 80% | 34,432 psi | 54% | 2684 fps | 96% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 38,725 psi | 61% | 2844 fps | 95.1% |
| Rottweil R 902 | <<locked>> | 80% | 48,950 psi | 77% | 2844 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 42,453 psi | 67% | 2772 fps | 99.8% |
| Rottweil R 904 | <<locked>> | 94% | 50,299 psi | 79% | 2927 fps | 95.7% |
| Rottweil R 905 | <<locked>> | 92% | 43,918 psi | 69% | 2861 fps | 95.5% |
| Rottweil R 907 | <<locked>> | 80% | 39,900 psi | 63% | 2694 fps | 95.2% |
| Shooters World Long Rifle | <<locked>> | 80% | 38,740 psi | 61% | 2674 fps | 96.9% |
| Shooters World Match Rifle | <<locked>> | 80% | 52,736 psi | 83% | 2923 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 47,079 psi | 74% | 2831 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 36,999 psi | 58% | 2648 fps | 95.1% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 43,642 psi | 68% | 2828 fps | 99.7% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 53,577 psi | 84% | 2953 fps | 99.8% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 51,111 psi | 80% | 2920 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 52,330 psi | 82% | 2828 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 44,121 psi | 69% | 2690 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 38,000 psi | 60% | 2615 fps | 95.4% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 43,511 psi | 68% | 2854 fps | 95.4% |
| Somchem S335 | <<locked>> | 80% | 52,011 psi | 82% | 2825 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 53,447 psi | 84% | 2943 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 42,873 psi | 67% | 2776 fps | 99.8% |
| Somchem S361 | <<locked>> | 94% | 51,909 psi | 81% | 2917 fps | 95.2% |
| Somchem S365 | <<locked>> | 80% | 32,010 psi | 50% | 2618 fps | 99.1% |
| Somchem S385 | <<locked>> | 90% | 41,684 psi | 65% | 2782 fps | 95.8% |
| Vihtavuori N133 | <<locked>> | 80% | 52,924 psi | 83% | 2812 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 49,095 psi | 77% | 2808 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 49,501 psi | 78% | 2825 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 41,002 psi | 64% | 2703 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 36,840 psi | 58% | 2664 fps | 97.5% |
| Vihtavuori N165 | <<locked>> | 94% | 41,118 psi | 64% | 2759 fps | 95.2% |
| Vihtavuori N540 | <<locked>> | 80% | 47,776 psi | 75% | 2815 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 36,405 psi | 57% | 2667 fps | 97.2% |
| Vihtavuori N555 | <<locked>> | 82% | 29,602 psi | 46% | 2549 fps | 95.6% |
| Vihtavuori N560 | <<locked>> | 98% | 51,967 psi | 81% | 3074 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 36,216 psi | 57% | 2638 fps | 99.2% |
| Winchester 760 | <<locked>> | 80% | 37,840 psi | 59% | 2723 fps | 95.2% |
| Winchester StaBALL HD | <<locked>> | 86% | 27,166 psi | 43% | 2559 fps | 96.4% |
| Winchester StaBALL Match | <<locked>> | 80% | 51,271 psi | 80% | 2930 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 44,367 psi | 70% | 2831 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 111 powders for 7 mm WSM loaded with the .284 | 139gr | Barnes LRX BT. Alliant Reloder-26 delivers the highest muzzle velocity at 3,199 fps; across all powders the maximum-charge window runs from 1,877 fps to 3,199 fps. Accurate 3100 gives the best case fill at 100 %, and 111 of the 111 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 53–90 %, leaving at least 10 % headroom. The 139.0 gr projectile in 0.284" calls for a 1:9.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate MAGPRO, ADI AR 2213 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. ReloadSwiss RS 70, Alliant Reloder-16, Alliant Reloder-26 rank at the top here: for 7 mm WSM with the .284 | 139gr | Barnes LRX BT they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, ADI AR 2225, Baschieri & Pellagri 109, Bofors RP30 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.