Load Specifications
Load data in caliber 7 mm WSM with .284 | 140gr | Nosler Expansion Tip bullet and 100 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are IMR 4350, Alliant Reloder-16 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.
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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>> | 84% | 56,869 psi | 89% | 2913 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 55,114 psi | 86% | 2940 fps | 98.6% |
| Accurate 3100ᴾ | <<locked>> | 100% | 52,547 psi | 82% | 2972 fps | 99.4% |
| Accurate 4064 | <<locked>> | 86% | 57,348 psi | 90% | 2972 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 54,882 psi | 86% | 3031 fps | 100% |
| ADI AR 2206H | <<locked>> | 82% | 56,652 psi | 89% | 3009 fps | 100% |
| ADI AR 2208 | <<locked>> | 86% | 54,563 psi | 86% | 2963 fps | 100% |
| ADI AR 2209 | <<locked>> | 98% | 56,318 psi | 88% | 3081 fps | 98.2% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 53,998 psi | 85% | 3071 fps | 96.5% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 57,638 psi | 90% | 3143 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 55,100 psi | 86% | 2982 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 55,303 psi | 87% | 3005 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 94% | 55,898 psi | 88% | 3097 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 90% | 57,522 psi | 90% | 3123 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 98% | 55,405 psi | 87% | 3064 fps | 98.1% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 52,765 psi | 83% | 3064 fps | 97.8% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 49,545 psi | 78% | 2995 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 43,134 psi | 68% | 2910 fps | 98.7% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 57,595 psi | 90% | 3205 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 56,869 psi | 89% | 3025 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 48,080 psi | 75% | 2979 fps | 96.7% |
| Bofors RP3 | <<locked>> | 86% | 56,028 psi | 88% | 3002 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 52,765 psi | 83% | 3064 fps | 97.8% |
| Bofors RP7 | <<locked>> | 90% | 55,492 psi | 87% | 2982 fps | 98.8% |
| Hodgdon H380 | <<locked>> | 86% | 56,536 psi | 89% | 3018 fps | 100% |
| Hodgdon H414 | <<locked>> | 92% | 57,522 psi | 90% | 3091 fps | 99.4% |
| Hodgdon H4350 | <<locked>> | 90% | 57,116 psi | 90% | 3048 fps | 98.5% |
| Hodgdon H4831 SCᴾ | <<locked>> | 100% | 56,768 psi | 89% | 3058 fps | 96.4% |
| Hodgdon H4895 | <<locked>> | 82% | 57,305 psi | 90% | 3015 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 56,275 psi | 88% | 3015 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 54,070 psi | 85% | 2999 fps | 100% |
| Hodgdon Superformance | <<locked>> | 90% | 53,882 psi | 84% | 3068 fps | 98.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,158 psi | 57% | 1870 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 55,100 psi | 86% | 2969 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 57,464 psi | 90% | 2995 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 84% | 56,739 psi | 89% | 2982 fps | 99.2% |
| IMR 4350 | <<locked>> | 94% | 56,652 psi | 89% | 3018 fps | 99% |
| IMR 4451 Enduron | <<locked>> | 90% | 57,363 psi | 90% | 3015 fps | 99.3% |
| IMR 4831 | <<locked>> | 94% | 55,434 psi | 87% | 3025 fps | 100% |
| IMR 4895 | <<locked>> | 84% | 56,782 psi | 89% | 3035 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 98% | 55,753 psi | 87% | 3005 fps | 96.4% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 51,184 psi | 80% | 3031 fps | 96% |
| Lovex D073.6 | <<locked>> | 82% | 57,261 psi | 90% | 2979 fps | 100% |
| Lovex S060 | <<locked>> | 82% | 55,651 psi | 87% | 2930 fps | 100% |
| Lovex S062 | <<locked>> | 86% | 57,464 psi | 90% | 2986 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 57,203 psi | 90% | 3009 fps | 99.8% |
| Lovex S070 | <<locked>> | 92% | 54,868 psi | 86% | 2992 fps | 99.2% |
| Lovex S071ᴾ | <<locked>> | 100% | 43,555 psi | 68% | 2815 fps | 98% |
| Norma 201 | <<locked>> | 82% | 55,361 psi | 87% | 2949 fps | 100% |
| Norma 202 | <<locked>> | 82% | 55,956 psi | 88% | 2943 fps | 100% |
| Norma 203B | <<locked>> | 84% | 54,607 psi | 86% | 2989 fps | 100% |
| Norma 204 | <<locked>> | 94% | 57,551 psi | 90% | 3074 fps | 98.2% |
| Norma MRPᴾ | <<locked>> | 100% | 56,101 psi | 88% | 3153 fps | 99.3% |
| Norma URP | <<locked>> | 94% | 57,319 psi | 90% | 3071 fps | 100% |
| Ramshot Big Game | <<locked>> | 84% | 55,550 psi | 87% | 3018 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 51,445 psi | 81% | 3048 fps | 96.4% |
| Ramshot Hunter | <<locked>> | 94% | 56,246 psi | 88% | 3077 fps | 99.7% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 45,861 psi | 72% | 2917 fps | 96.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,709 psi | 58% | 1913 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 56,405 psi | 88% | 3002 fps | 99.5% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 56,565 psi | 89% | 3077 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 56,927 psi | 89% | 3114 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 54,955 psi | 86% | 3058 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 57,450 psi | 90% | 3146 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 42,018 psi | 66% | 2923 fps | 96.7% |
| Rottweil R 902 | <<locked>> | 84% | 56,014 psi | 88% | 2949 fps | 100% |
| Rottweil R 903 | <<locked>> | 88% | 55,912 psi | 88% | 2992 fps | 100% |
| Rottweil R 904 | <<locked>> | 96% | 54,259 psi | 85% | 2989 fps | 96.7% |
| Rottweil R 905 | <<locked>> | 98% | 54,520 psi | 85% | 3048 fps | 98.1% |
| Rottweil R 907 | <<locked>> | 90% | 55,492 psi | 87% | 2982 fps | 98.8% |
| Shooters World Long Rifle | <<locked>> | 92% | 57,203 psi | 90% | 3009 fps | 99.8% |
| Shooters World Match Rifle | <<locked>> | 82% | 57,261 psi | 90% | 2979 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 57,464 psi | 90% | 2986 fps | 100% |
| Shooters World SW4350 | <<locked>> | 92% | 54,868 psi | 86% | 2992 fps | 99.2% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 54,230 psi | 85% | 3002 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 55,303 psi | 87% | 2979 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 56,188 psi | 88% | 2877 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 57,174 psi | 90% | 2877 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 56,985 psi | 89% | 2959 fps | 99.3% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 54,041 psi | 85% | 3041 fps | 98% |
| Somchem S335 | <<locked>> | 82% | 55,941 psi | 88% | 2874 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 55,970 psi | 88% | 2992 fps | 100% |
| Somchem S361 | <<locked>> | 96% | 56,086 psi | 88% | 2982 fps | 96.3% |
| Somchem S365 | <<locked>> | 96% | 56,797 psi | 89% | 3074 fps | 100% |
| Somchem S385 | <<locked>> | 98% | 55,158 psi | 86% | 3025 fps | 98.8% |
| Vihtavuori N133 | <<locked>> | 82% | 56,753 psi | 89% | 2858 fps | 100% |
| Vihtavuori N135 | <<locked>> | 84% | 56,217 psi | 88% | 2904 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 56,652 psi | 89% | 2920 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 57,392 psi | 90% | 2963 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 56,014 psi | 88% | 3015 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 50,894 psi | 80% | 2936 fps | 97.8% |
| Vihtavuori N540 | <<locked>> | 84% | 54,810 psi | 86% | 2917 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 54,998 psi | 86% | 3018 fps | 100% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 55,608 psi | 87% | 3077 fps | 100% |
| Vihtavuori N560ᴾ | <<locked>> | 100% | 56,434 psi | 88% | 3143 fps | 96.8% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 55,854 psi | 88% | 2982 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 57,522 psi | 90% | 3091 fps | 99.4% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 44,788 psi | 70% | 3051 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 82% | 55,535 psi | 87% | 2986 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 55,521 psi | 87% | 3018 fps | 98% |
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% | 49,966 psi | 78% | 2815 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 48,312 psi | 76% | 2822 fps | 97.4% |
| Accurate 3100 | <<locked>> | 88% | 34,577 psi | 54% | 2618 fps | 95.3% |
| Accurate 4064 | <<locked>> | 80% | 47,369 psi | 74% | 2822 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 35,853 psi | 56% | 2667 fps | 97.5% |
| ADI AR 2206H | <<locked>> | 80% | 53,156 psi | 83% | 2953 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 45,237 psi | 71% | 2799 fps | 99.6% |
| ADI AR 2209 | <<locked>> | 90% | 43,178 psi | 68% | 2835 fps | 95% |
| ADI AR 2213 | <<locked>> | 98% | 50,227 psi | 79% | 3002 fps | 95.6% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 49,850 psi | 78% | 3018 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 45,614 psi | 71% | 2825 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 48,646 psi | 76% | 2894 fps | 99.9% |
| Alliant Reloder-16 | 51.1 gr | 80% | 35,259 psi | 55% | 2680 fps | 97.6% |
| Alliant Reloder-17 | <<locked>> | 80% | 40,103 psi | 63% | 2818 fps | 99.8% |
| Alliant Reloder-19 | <<locked>> | 90% | 42,714 psi | 67% | 2825 fps | 95.1% |
| Alliant Reloder-22 | <<locked>> | 94% | 42,917 psi | 67% | 2874 fps | 95.3% |
| Alliant Reloder-23 | <<locked>> | 82% | 27,369 psi | 43% | 2474 fps | 95.8% |
| Alliant Reloder-25 | <<locked>> | 92% | 33,272 psi | 52% | 2661 fps | 95.2% |
| Alliant Reloder-26 | <<locked>> | 84% | 31,517 psi | 49% | 2654 fps | 95.3% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 53,127 psi | 83% | 2969 fps | 100% |
| Bofors RP15 | <<locked>> | 98% | 44,976 psi | 70% | 2917 fps | 95.8% |
| Bofors RP3 | <<locked>> | 80% | 45,658 psi | 72% | 2831 fps | 100% |
| Bofors RP5 | <<locked>> | 94% | 42,917 psi | 67% | 2874 fps | 95.3% |
| Bofors RP7 | <<locked>> | 80% | 40,176 psi | 63% | 2694 fps | 95.5% |
| Hodgdon H380 | <<locked>> | 80% | 46,253 psi | 72% | 2844 fps | 99.2% |
| Hodgdon H414 | <<locked>> | 80% | 38,159 psi | 60% | 2723 fps | 95.5% |
| Hodgdon H4350 | <<locked>> | 82% | 43,961 psi | 69% | 2808 fps | 95.8% |
| Hodgdon H4831 SC | <<locked>> | 98% | 52,794 psi | 83% | 2992 fps | 95.6% |
| Hodgdon H4895 | <<locked>> | 80% | 53,766 psi | 84% | 2963 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 32,764 psi | 51% | 2572 fps | 98.2% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 50,676 psi | 79% | 2946 fps | 100% |
| Hodgdon Superformance | <<locked>> | 82% | 40,030 psi | 63% | 2795 fps | 95.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,977 psi | 42% | 1673 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 51,401 psi | 81% | 2910 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 47,572 psi | 75% | 2835 fps | 99.9% |
| IMR 4166 Enduron | <<locked>> | 80% | 49,792 psi | 78% | 2864 fps | 98.3% |
| IMR 4350 | 54.8 gr | 84% | 40,973 psi | 64% | 2730 fps | 95.7% |
| IMR 4451 Enduron | <<locked>> | 80% | 41,843 psi | 66% | 2730 fps | 96.5% |
| IMR 4831 | <<locked>> | 80% | 34,693 psi | 54% | 2625 fps | 97.2% |
| IMR 4895 | <<locked>> | 80% | 49,908 psi | 78% | 2923 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 52,330 psi | 82% | 2946 fps | 95.7% |
| IMR 7828 SSC | <<locked>> | 98% | 47,848 psi | 75% | 2969 fps | 95% |
| Lovex D073.6 | <<locked>> | 80% | 53,359 psi | 84% | 2923 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 52,257 psi | 82% | 2877 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 47,616 psi | 75% | 2831 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 39,204 psi | 61% | 2677 fps | 97.2% |
| Lovex S070 | <<locked>> | 80% | 37,260 psi | 58% | 2648 fps | 95.4% |
| Lovex S071 | <<locked>> | 94% | 35,737 psi | 56% | 2644 fps | 95.7% |
| Norma 201 | <<locked>> | 80% | 51,909 psi | 81% | 2894 fps | 100% |
| Norma 202 | <<locked>> | 80% | 52,707 psi | 83% | 2894 fps | 100% |
| Norma 203B | <<locked>> | 80% | 48,008 psi | 75% | 2877 fps | 100% |
| Norma 204 | <<locked>> | 86% | 43,656 psi | 68% | 2825 fps | 95.1% |
| Norma MRP | <<locked>> | 90% | 39,131 psi | 61% | 2822 fps | 95.6% |
| Norma URP | <<locked>> | 80% | 35,853 psi | 56% | 2664 fps | 97.4% |
| Ramshot Big Game | <<locked>> | 80% | 48,341 psi | 76% | 2900 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 47,950 psi | 75% | 2982 fps | 95.5% |
| Ramshot Hunter | <<locked>> | 80% | 34,838 psi | 55% | 2648 fps | 95.2% |
| Ramshot Magnum | <<locked>> | 98% | 42,511 psi | 67% | 2848 fps | 95.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,354 psi | 43% | 1713 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 46,224 psi | 72% | 2825 fps | 98.2% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 52,649 psi | 83% | 3015 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 42,714 psi | 67% | 2877 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 35,723 psi | 56% | 2684 fps | 97.1% |
| ReloadSwiss RS 70 | 55.9 gr | 80% | 34,867 psi | 55% | 2690 fps | 96.4% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 39,088 psi | 61% | 2848 fps | 95.5% |
| Rottweil R 902 | <<locked>> | 80% | 49,269 psi | 77% | 2841 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 42,815 psi | 67% | 2772 fps | 99.9% |
| Rottweil R 904 | <<locked>> | 92% | 47,601 psi | 75% | 2871 fps | 95.1% |
| Rottweil R 905 | <<locked>> | 92% | 44,483 psi | 70% | 2864 fps | 95.9% |
| Rottweil R 907 | <<locked>> | 80% | 40,176 psi | 63% | 2694 fps | 95.5% |
| Shooters World Long Rifle | <<locked>> | 80% | 39,204 psi | 61% | 2677 fps | 97.2% |
| Shooters World Match Rifle | <<locked>> | 80% | 53,359 psi | 84% | 2923 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 47,616 psi | 75% | 2831 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 37,260 psi | 58% | 2648 fps | 95.4% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 44,208 psi | 69% | 2828 fps | 99.8% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 51,677 psi | 81% | 2923 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 52,910 psi | 83% | 2828 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 44,628 psi | 70% | 2690 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 38,261 psi | 60% | 2615 fps | 95.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 44,063 psi | 69% | 2858 fps | 95.7% |
| Somchem S335 | <<locked>> | 80% | 52,547 psi | 82% | 2825 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 43,410 psi | 68% | 2776 fps | 99.9% |
| Somchem S361 | <<locked>> | 94% | 52,402 psi | 82% | 2923 fps | 95.5% |
| Somchem S365 | <<locked>> | 80% | 32,300 psi | 51% | 2618 fps | 99.2% |
| Somchem S385 | <<locked>> | 88% | 39,494 psi | 62% | 2726 fps | 95.2% |
| Vihtavuori N133 | <<locked>> | 80% | 53,519 psi | 84% | 2812 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 49,734 psi | 78% | 2812 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 49,821 psi | 78% | 2822 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 41,292 psi | 65% | 2700 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 37,333 psi | 59% | 2671 fps | 97.8% |
| Vihtavuori N165 | <<locked>> | 94% | 41,597 psi | 65% | 2762 fps | 95.4% |
| Vihtavuori N540 | <<locked>> | 80% | 48,327 psi | 76% | 2818 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 36,883 psi | 58% | 2671 fps | 97.5% |
| Vihtavuori N555 | <<locked>> | 82% | 30,095 psi | 47% | 2556 fps | 96% |
| Vihtavuori N560 | <<locked>> | 96% | 49,168 psi | 77% | 3012 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 36,637 psi | 57% | 2641 fps | 99.4% |
| Winchester 760 | <<locked>> | 80% | 38,159 psi | 60% | 2723 fps | 95.5% |
| Winchester StaBALL HD | <<locked>> | 84% | 25,657 psi | 40% | 2493 fps | 95.3% |
| Winchester StaBALL Match | <<locked>> | 80% | 51,822 psi | 81% | 2930 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 44,846 psi | 70% | 2835 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 108 powders for 7 mm WSM loaded with the .284 | 140gr | Nosler Expansion Tip. Alliant Reloder-26 delivers the highest muzzle velocity at 3,205 fps; across all powders the maximum-charge window runs from 1,870 fps to 3,205 fps. Accurate 3100 gives the best case fill at 100 %, and 108 of the 108 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 54–90 %, 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. 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. IMR 4350, Alliant Reloder-16, ReloadSwiss RS 70 rank at the top here: for 7 mm WSM with the .284 | 140gr | Nosler Expansion Tip 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.