Load Specifications
Load data in caliber 7 mm WSM with .284 | 140gr | Ferrobull Tripple Expand Jagd bullet and 97 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-26, Alliant Reloder-17 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.
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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>> | 82% | 55,071 psi | 86% | 2894 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 56,739 psi | 89% | 2976 fps | 98.9% |
| Accurate 3100ᴾ | <<locked>> | 100% | 54,897 psi | 86% | 3015 fps | 99.7% |
| Accurate 4064 | <<locked>> | 84% | 55,550 psi | 87% | 2953 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 56,768 psi | 89% | 3068 fps | 100% |
| Accurate MAGPROᴾ | <<locked>> | 100% | 57,406 psi | 90% | 3166 fps | 96.6% |
| ADI AR 2208 | <<locked>> | 86% | 56,101 psi | 88% | 2992 fps | 100% |
| ADI AR 2209 | <<locked>> | 96% | 54,433 psi | 85% | 3058 fps | 98% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 55,825 psi | 87% | 3114 fps | 97.2% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 55,564 psi | 87% | 3117 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 96% | 54,650 psi | 86% | 3058 fps | 98.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 56,724 psi | 89% | 3012 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 56,942 psi | 89% | 3035 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 94% | 57,725 psi | 90% | 3130 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 88% | 55,622 psi | 87% | 3100 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 98% | 57,406 psi | 90% | 3104 fps | 98.6% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 54,766 psi | 86% | 3107 fps | 98.3% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 51,692 psi | 81% | 3031 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 44,802 psi | 70% | 2953 fps | 99.2% |
| Alliant Reloder-26 | <<locked>> | 98% | 55,825 psi | 87% | 3182 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 50,024 psi | 78% | 3018 fps | 97.3% |
| Bofors RP3 | <<locked>> | 86% | 57,682 psi | 90% | 3028 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 54,766 psi | 86% | 3107 fps | 98.3% |
| Bofors RP7 | <<locked>> | 90% | 57,145 psi | 90% | 3022 fps | 99.1% |
| Hodgdon H380 | <<locked>> | 84% | 54,491 psi | 85% | 2995 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 90% | 55,550 psi | 87% | 3071 fps | 99.3% |
| Hodgdon H4350 | <<locked>> | 88% | 55,245 psi | 87% | 3025 fps | 98.4% |
| Hodgdon H4831 | <<locked>> | 98% | 56,057 psi | 88% | 3054 fps | 96.6% |
| Hodgdon H4831 SC | <<locked>> | 98% | 54,679 psi | 86% | 3031 fps | 96.3% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 54,375 psi | 85% | 2995 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 55,985 psi | 88% | 3035 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 43,772 psi | 69% | 2979 fps | 96.4% |
| Hodgdon Superformance | <<locked>> | 90% | 55,970 psi | 88% | 3107 fps | 99.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,318 psi | 57% | 1886 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 56,434 psi | 88% | 2995 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 55,521 psi | 87% | 2976 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 82% | 54,447 psi | 85% | 2953 fps | 99.1% |
| IMR 4350 | <<locked>> | 92% | 54,708 psi | 86% | 2999 fps | 98.9% |
| IMR 4451 Enduron | <<locked>> | 88% | 55,230 psi | 87% | 2989 fps | 99.2% |
| IMR 4831 | <<locked>> | 94% | 57,377 psi | 90% | 3061 fps | 100% |
| IMR 4895 | <<locked>> | 82% | 54,955 psi | 86% | 3012 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 98% | 57,319 psi | 90% | 3041 fps | 97% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 53,272 psi | 83% | 3084 fps | 96.8% |
| Lovex S060 | <<locked>> | 82% | 56,971 psi | 89% | 2959 fps | 100% |
| Lovex S062 | <<locked>> | 84% | 55,564 psi | 87% | 2966 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 55,361 psi | 87% | 2989 fps | 99.8% |
| Lovex S070 | <<locked>> | 92% | 56,753 psi | 89% | 3031 fps | 99.5% |
| Lovex S071ᴾ | <<locked>> | 100% | 45,310 psi | 71% | 2854 fps | 98.5% |
| Norma 201 | <<locked>> | 82% | 56,797 psi | 89% | 2976 fps | 100% |
| Norma 202 | <<locked>> | 82% | 57,696 psi | 90% | 2972 fps | 100% |
| Norma 203B | <<locked>> | 84% | 56,231 psi | 88% | 3022 fps | 100% |
| Norma 204 | <<locked>> | 92% | 55,622 psi | 87% | 3051 fps | 98.1% |
| Norma MRP | <<locked>> | 98% | 54,433 psi | 85% | 3133 fps | 99.3% |
| Norma URP | <<locked>> | 92% | 55,680 psi | 87% | 3054 fps | 100% |
| Ramshot Big Game | <<locked>> | 84% | 57,319 psi | 90% | 3051 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 53,563 psi | 84% | 3097 fps | 97.2% |
| Ramshot Hunter | <<locked>> | 92% | 54,549 psi | 85% | 3054 fps | 99.6% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 47,703 psi | 75% | 2959 fps | 97.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,869 psi | 58% | 1929 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 54,375 psi | 85% | 2979 fps | 99.4% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 54,810 psi | 86% | 3087 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 56,927 psi | 89% | 3094 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 55,535 psi | 87% | 3123 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 43,830 psi | 69% | 2972 fps | 97.6% |
| Rottweil R 902 | <<locked>> | 84% | 57,450 psi | 90% | 2976 fps | 100% |
| Rottweil R 903 | <<locked>> | 86% | 54,244 psi | 85% | 2976 fps | 100% |
| Rottweil R 904 | <<locked>> | 96% | 55,970 psi | 88% | 3028 fps | 97.3% |
| Rottweil R 905 | <<locked>> | 98% | 56,637 psi | 89% | 3091 fps | 98.6% |
| Rottweil R 907 | <<locked>> | 90% | 57,145 psi | 90% | 3022 fps | 99.1% |
| Shooters World Long Rifle | <<locked>> | 90% | 55,361 psi | 87% | 2989 fps | 99.8% |
| Shooters World Precision | <<locked>> | 84% | 55,564 psi | 87% | 2966 fps | 100% |
| Shooters World SW4350 | <<locked>> | 92% | 56,753 psi | 89% | 3031 fps | 99.5% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 55,985 psi | 88% | 3038 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 56,826 psi | 89% | 3009 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 57,682 psi | 90% | 2907 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 55,172 psi | 86% | 2858 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 54,882 psi | 86% | 2936 fps | 99.2% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 56,144 psi | 88% | 3084 fps | 98.5% |
| Somchem S335 | <<locked>> | 82% | 57,319 psi | 90% | 2900 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 57,551 psi | 90% | 3022 fps | 100% |
| Somchem S361 | <<locked>> | 94% | 54,085 psi | 85% | 2959 fps | 96.1% |
| Somchem S365 | <<locked>> | 94% | 55,187 psi | 86% | 3058 fps | 100% |
| Somchem S385 | <<locked>> | 98% | 57,145 psi | 90% | 3061 fps | 99.1% |
| Vihtavuori N135 | <<locked>> | 82% | 54,505 psi | 85% | 2884 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 54,781 psi | 86% | 2900 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 55,535 psi | 87% | 2943 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 57,696 psi | 90% | 3045 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 53,026 psi | 83% | 2979 fps | 98.3% |
| Vihtavuori N540 | <<locked>> | 84% | 56,550 psi | 89% | 2946 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 56,840 psi | 89% | 3051 fps | 100% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 57,609 psi | 90% | 3114 fps | 100% |
| Vihtavuori N560 | <<locked>> | 98% | 54,694 psi | 86% | 3120 fps | 96.6% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 53,766 psi | 84% | 2956 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 55,825 psi | 87% | 3071 fps | 99.3% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 46,992 psi | 74% | 3094 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 82% | 57,072 psi | 89% | 3018 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 57,740 psi | 90% | 3061 fps | 98.5% |
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% | 51,590 psi | 81% | 2844 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 49,690 psi | 78% | 2858 fps | 97.8% |
| Accurate 3100 | <<locked>> | 86% | 33,518 psi | 53% | 2595 fps | 95% |
| Accurate 4064 | <<locked>> | 80% | 48,907 psi | 77% | 2851 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 37,217 psi | 58% | 2703 fps | 98% |
| Accurate MAGPRO | <<locked>> | 98% | 53,447 psi | 84% | 3100 fps | 95.7% |
| ADI AR 2208 | <<locked>> | 80% | 46,325 psi | 73% | 2828 fps | 99.8% |
| ADI AR 2209 | <<locked>> | 90% | 44,599 psi | 70% | 2874 fps | 95.8% |
| ADI AR 2213 | <<locked>> | 96% | 48,718 psi | 76% | 2982 fps | 95.4% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 51,779 psi | 81% | 3058 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 90% | 44,657 psi | 70% | 2871 fps | 95.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 46,789 psi | 73% | 2851 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 50,038 psi | 78% | 2923 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 36,448 psi | 57% | 2720 fps | 98.2% |
| Alliant Reloder-17 | 56.8 gr | 80% | 41,597 psi | 65% | 2854 fps | 99.9% |
| Alliant Reloder-19 | <<locked>> | 90% | 44,150 psi | 69% | 2864 fps | 95.8% |
| Alliant Reloder-22 | <<locked>> | 92% | 41,539 psi | 65% | 2851 fps | 95.1% |
| Alliant Reloder-23 | <<locked>> | 80% | 26,556 psi | 42% | 2451 fps | 95.5% |
| Alliant Reloder-25 | <<locked>> | 92% | 34,418 psi | 54% | 2700 fps | 96% |
| Alliant Reloder-26 | 61.1 gr | 84% | 32,779 psi | 51% | 2697 fps | 96.2% |
| Bofors RP15 | <<locked>> | 96% | 43,671 psi | 68% | 2894 fps | 95.6% |
| Bofors RP3 | <<locked>> | 80% | 47,079 psi | 74% | 2861 fps | 100% |
| Bofors RP5 | <<locked>> | 92% | 41,539 psi | 65% | 2851 fps | 95.1% |
| Bofors RP7 | <<locked>> | 80% | 41,365 psi | 65% | 2726 fps | 96% |
| Hodgdon H380 | <<locked>> | 80% | 47,572 psi | 75% | 2874 fps | 99.5% |
| Hodgdon H414 | <<locked>> | 80% | 39,378 psi | 62% | 2756 fps | 96.1% |
| Hodgdon H4350 | <<locked>> | 80% | 42,409 psi | 66% | 2782 fps | 95.5% |
| Hodgdon H4831 | <<locked>> | 96% | 52,243 psi | 82% | 2992 fps | 95.7% |
| Hodgdon H4831 SC | <<locked>> | 96% | 51,184 psi | 80% | 2972 fps | 95.4% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 34,011 psi | 53% | 2608 fps | 98.7% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 52,069 psi | 82% | 2972 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 98% | 41,046 psi | 64% | 2913 fps | 95.3% |
| Hodgdon Superformance | <<locked>> | 80% | 38,435 psi | 60% | 2762 fps | 95.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,992 psi | 42% | 1683 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 53,040 psi | 83% | 2943 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 48,733 psi | 76% | 2864 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 80% | 51,227 psi | 80% | 2900 fps | 98.7% |
| IMR 4350 | <<locked>> | 82% | 39,697 psi | 62% | 2710 fps | 95.5% |
| IMR 4451 Enduron | <<locked>> | 80% | 43,018 psi | 67% | 2762 fps | 97% |
| IMR 4831 | <<locked>> | 80% | 35,955 psi | 56% | 2657 fps | 97.7% |
| IMR 4895 | <<locked>> | 80% | 51,329 psi | 80% | 2953 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 50,662 psi | 79% | 2927 fps | 95.5% |
| IMR 7828 SSC | <<locked>> | 98% | 49,647 psi | 78% | 3015 fps | 95.8% |
| Lovex S060 | <<locked>> | 80% | 53,621 psi | 84% | 2910 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 49,052 psi | 77% | 2864 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 40,393 psi | 63% | 2710 fps | 97.7% |
| Lovex S070 | <<locked>> | 80% | 38,450 psi | 60% | 2684 fps | 96% |
| Lovex S071 | <<locked>> | 92% | 34,795 psi | 55% | 2628 fps | 95.6% |
| Norma 201 | <<locked>> | 80% | 53,388 psi | 84% | 2927 fps | 100% |
| Norma 202 | <<locked>> | 80% | 53,969 psi | 85% | 2920 fps | 100% |
| Norma 203B | <<locked>> | 80% | 49,385 psi | 77% | 2910 fps | 100% |
| Norma 204 | <<locked>> | 86% | 45,179 psi | 71% | 2864 fps | 95.8% |
| Norma MRP | 62.1 gr | 88% | 37,942 psi | 59% | 2799 fps | 95.4% |
| Norma URP | <<locked>> | 80% | 37,130 psi | 58% | 2700 fps | 97.9% |
| Ramshot Big Game | <<locked>> | 80% | 50,096 psi | 79% | 2936 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 46,209 psi | 72% | 2956 fps | 95.2% |
| Ramshot Hunter | <<locked>> | 80% | 36,129 psi | 57% | 2687 fps | 95.9% |
| Ramshot Magnum | <<locked>> | 96% | 41,147 psi | 64% | 2825 fps | 95.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,557 psi | 43% | 1726 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 47,616 psi | 75% | 2861 fps | 98.6% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 44,280 psi | 69% | 2913 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 37,159 psi | 58% | 2723 fps | 97.7% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 36,230 psi | 57% | 2733 fps | 97.1% |
| ReloadSwiss RS 76 | <<locked>> | 96% | 37,913 psi | 59% | 2825 fps | 95.2% |
| Rottweil R 902 | <<locked>> | 80% | 50,720 psi | 79% | 2874 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 44,237 psi | 69% | 2805 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 49,327 psi | 77% | 2910 fps | 95.8% |
| Rottweil R 905 | <<locked>> | 90% | 43,091 psi | 68% | 2841 fps | 95.6% |
| Rottweil R 907 | <<locked>> | 80% | 41,365 psi | 65% | 2726 fps | 96% |
| Shooters World Long Rifle | <<locked>> | 80% | 40,393 psi | 63% | 2710 fps | 97.7% |
| Shooters World Precision | <<locked>> | 80% | 49,052 psi | 77% | 2864 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 38,450 psi | 60% | 2684 fps | 96% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 45,716 psi | 72% | 2864 fps | 99.9% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 53,214 psi | 83% | 2953 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 54,128 psi | 85% | 2854 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 45,788 psi | 72% | 2717 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 39,349 psi | 62% | 2648 fps | 96.1% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 42,714 psi | 67% | 2838 fps | 95.5% |
| Somchem S335 | <<locked>> | 80% | 53,940 psi | 85% | 2854 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 44,759 psi | 70% | 2808 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 50,618 psi | 79% | 2900 fps | 95.3% |
| Somchem S365 | <<locked>> | 80% | 33,576 psi | 53% | 2654 fps | 99.5% |
| Somchem S385 | <<locked>> | 88% | 40,915 psi | 64% | 2766 fps | 95.9% |
| Vihtavuori N135 | <<locked>> | 80% | 51,082 psi | 80% | 2838 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 51,227 psi | 80% | 2848 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 42,583 psi | 67% | 2733 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 38,595 psi | 60% | 2703 fps | 98.2% |
| Vihtavuori N165 | <<locked>> | 92% | 40,248 psi | 63% | 2740 fps | 95.2% |
| Vihtavuori N540 | <<locked>> | 80% | 49,574 psi | 78% | 2841 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 38,072 psi | 60% | 2703 fps | 97.9% |
| Vihtavuori N555 | <<locked>> | 80% | 29,225 psi | 46% | 2530 fps | 95.7% |
| Vihtavuori N560 | <<locked>> | 96% | 51,010 psi | 80% | 3054 fps | 95.8% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 37,782 psi | 59% | 2671 fps | 99.6% |
| Winchester 760 | <<locked>> | 80% | 39,581 psi | 62% | 2759 fps | 96.1% |
| Winchester StaBALL HD | <<locked>> | 84% | 26,701 psi | 42% | 2543 fps | 96.5% |
| Winchester StaBALL Match | <<locked>> | 80% | 53,388 psi | 84% | 2963 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 43,439 psi | 68% | 2812 fps | 95.5% |
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 97 powders for 7 mm WSM loaded with the .284 | 140gr | Ferrobull Tripple Expand Jagd. Alliant Reloder-26 delivers the highest muzzle velocity at 3,182 fps; across all powders the maximum-charge window runs from 1,886 fps to 3,182 fps. Accurate 3100 gives the best case fill at 100 %, and 97 of the 97 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 1:11.5 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. Alliant Reloder-26, Alliant Reloder-17, Norma MRP rank at the top here: for 7 mm WSM with the .284 | 140gr | Ferrobull Tripple Expand Jagd 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.