Load Specifications
Load data in caliber 7 mm WSM with .284 | 145gr | Fox Classic Hunter bullet and 97 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-26 and Alliant Reloder-17.
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% | 54,694 psi | 86% | 2835 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 56,550 psi | 89% | 2917 fps | 99% |
| Accurate 3100ᴾ | <<locked>> | 100% | 54,404 psi | 85% | 2959 fps | 99.7% |
| Accurate 4064 | <<locked>> | 84% | 55,274 psi | 87% | 2894 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 56,449 psi | 88% | 3009 fps | 100% |
| Accurate MAGPROᴾ | <<locked>> | 100% | 56,942 psi | 89% | 3107 fps | 96.7% |
| ADI AR 2208 | <<locked>> | 86% | 55,680 psi | 87% | 2930 fps | 100% |
| ADI AR 2209 | <<locked>> | 98% | 57,740 psi | 90% | 3058 fps | 98.7% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 55,434 psi | 87% | 3051 fps | 97.2% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 55,303 psi | 87% | 3058 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 96% | 54,273 psi | 85% | 2995 fps | 98.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 56,637 psi | 89% | 2956 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 56,797 psi | 89% | 2979 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 94% | 57,377 psi | 90% | 3068 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 88% | 55,013 psi | 86% | 3035 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 98% | 57,101 psi | 89% | 3048 fps | 98.7% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 54,331 psi | 85% | 3048 fps | 98.4% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 51,372 psi | 81% | 2976 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 44,382 psi | 70% | 2894 fps | 99.2% |
| Alliant Reloder-26 | <<locked>> | 98% | 55,216 psi | 87% | 3120 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 49,748 psi | 78% | 2966 fps | 97.4% |
| Bofors RP3 | <<locked>> | 86% | 57,392 psi | 90% | 2972 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 54,331 psi | 85% | 3048 fps | 98.4% |
| Bofors RP7 | <<locked>> | 90% | 56,681 psi | 89% | 2959 fps | 99.1% |
| Hodgdon H380 | <<locked>> | 84% | 54,201 psi | 85% | 2936 fps | 100% |
| Hodgdon H414 | <<locked>> | 90% | 55,274 psi | 87% | 3009 fps | 99.4% |
| Hodgdon H4350 | <<locked>> | 88% | 54,795 psi | 86% | 2966 fps | 98.5% |
| Hodgdon H4831 | <<locked>> | 98% | 55,608 psi | 87% | 2995 fps | 96.6% |
| Hodgdon H4831 SC | <<locked>> | 98% | 54,447 psi | 85% | 2976 fps | 96.4% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 54,012 psi | 85% | 2933 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 55,637 psi | 87% | 2972 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 43,395 psi | 68% | 2923 fps | 96.5% |
| Hodgdon Superformance | <<locked>> | 90% | 55,448 psi | 87% | 3045 fps | 99.3% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,318 psi | 57% | 1841 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 56,188 psi | 88% | 2936 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 55,274 psi | 87% | 2917 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 82% | 54,302 psi | 85% | 2897 fps | 99.2% |
| IMR 4350 | <<locked>> | 92% | 54,418 psi | 85% | 2940 fps | 98.9% |
| IMR 4451 Enduron | <<locked>> | 88% | 54,998 psi | 86% | 2933 fps | 99.2% |
| IMR 4831 | <<locked>> | 94% | 56,869 psi | 89% | 2999 fps | 100% |
| IMR 4895 | <<locked>> | 82% | 54,694 psi | 86% | 2953 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 98% | 57,014 psi | 89% | 2982 fps | 97.1% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 52,866 psi | 83% | 3022 fps | 96.8% |
| Lovex S060 | <<locked>> | 82% | 56,666 psi | 89% | 2900 fps | 100% |
| Lovex S062 | <<locked>> | 84% | 55,317 psi | 87% | 2907 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 54,882 psi | 86% | 2927 fps | 99.8% |
| Lovex S070 | <<locked>> | 92% | 56,405 psi | 88% | 2972 fps | 99.5% |
| Lovex S071ᴾ | <<locked>> | 100% | 44,889 psi | 70% | 2799 fps | 98.6% |
| Norma 201 | <<locked>> | 82% | 56,492 psi | 89% | 2917 fps | 100% |
| Norma 202 | <<locked>> | 82% | 57,377 psi | 90% | 2910 fps | 100% |
| Norma 203B | <<locked>> | 84% | 56,086 psi | 88% | 2963 fps | 100% |
| Norma 204 | <<locked>> | 92% | 55,216 psi | 87% | 2992 fps | 98.2% |
| Norma MRP | <<locked>> | 98% | 54,027 psi | 85% | 3074 fps | 99.3% |
| Norma URP | <<locked>> | 92% | 55,347 psi | 87% | 2995 fps | 100% |
| Ramshot Big Game | <<locked>> | 84% | 57,159 psi | 90% | 2992 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 53,243 psi | 83% | 3041 fps | 97.3% |
| Ramshot Hunter | <<locked>> | 92% | 54,128 psi | 85% | 2995 fps | 99.7% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 47,268 psi | 74% | 2904 fps | 97.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,898 psi | 58% | 1883 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 54,128 psi | 85% | 2920 fps | 99.5% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 54,679 psi | 86% | 3031 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 56,521 psi | 89% | 3031 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 55,230 psi | 87% | 3064 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 43,511 psi | 68% | 2920 fps | 97.7% |
| Rottweil R 902 | <<locked>> | 84% | 57,174 psi | 90% | 2917 fps | 100% |
| Rottweil R 903 | <<locked>> | 88% | 57,522 psi | 90% | 2966 fps | 100% |
| Rottweil R 904 | <<locked>> | 96% | 55,825 psi | 87% | 2972 fps | 97.4% |
| Rottweil R 905 | <<locked>> | 98% | 56,289 psi | 88% | 3028 fps | 98.6% |
| Rottweil R 907 | <<locked>> | 90% | 56,681 psi | 89% | 2959 fps | 99.1% |
| Shooters World Long Rifle | <<locked>> | 90% | 54,882 psi | 86% | 2927 fps | 99.8% |
| Shooters World Precision | <<locked>> | 84% | 55,317 psi | 87% | 2907 fps | 100% |
| Shooters World SW4350 | <<locked>> | 92% | 56,405 psi | 88% | 2972 fps | 99.5% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 55,535 psi | 87% | 2976 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 56,449 psi | 88% | 2946 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 57,522 psi | 90% | 2844 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 54,897 psi | 86% | 2799 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 54,810 psi | 86% | 2884 fps | 99.3% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 55,825 psi | 87% | 3028 fps | 98.6% |
| Somchem S335 | <<locked>> | 82% | 56,985 psi | 89% | 2841 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 57,479 psi | 90% | 2963 fps | 100% |
| Somchem S361 | <<locked>> | 96% | 57,740 psi | 90% | 2966 fps | 97% |
| Somchem S365 | <<locked>> | 94% | 54,650 psi | 86% | 2992 fps | 100% |
| Somchem S385 | <<locked>> | 98% | 56,884 psi | 89% | 3005 fps | 99.2% |
| Vihtavuori N135 | <<locked>> | 84% | 57,725 psi | 90% | 2874 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 54,520 psi | 85% | 2844 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 55,288 psi | 87% | 2884 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 57,392 psi | 90% | 2986 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 52,620 psi | 82% | 2923 fps | 98.4% |
| Vihtavuori N540 | <<locked>> | 84% | 56,231 psi | 88% | 2887 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 56,376 psi | 88% | 2992 fps | 100% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 57,290 psi | 90% | 3054 fps | 100% |
| Vihtavuori N560 | <<locked>> | 98% | 54,346 psi | 85% | 3064 fps | 96.8% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 57,276 psi | 90% | 2953 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 55,274 psi | 87% | 3009 fps | 99.4% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 46,369 psi | 73% | 3035 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 82% | 56,782 psi | 89% | 2956 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 57,334 psi | 90% | 3002 fps | 98.6% |
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% | 51,155 psi | 80% | 2785 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 49,327 psi | 77% | 2799 fps | 97.9% |
| Accurate 3100 | <<locked>> | 86% | 33,272 psi | 52% | 2546 fps | 95.2% |
| Accurate 4064 | <<locked>> | 80% | 48,515 psi | 76% | 2792 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 37,101 psi | 58% | 2654 fps | 98.2% |
| Accurate MAGPRO | <<locked>> | 98% | 52,910 psi | 83% | 3038 fps | 95.8% |
| ADI AR 2208 | <<locked>> | 80% | 46,180 psi | 72% | 2772 fps | 99.8% |
| ADI AR 2209 | <<locked>> | 88% | 41,408 psi | 65% | 2756 fps | 95% |
| ADI AR 2213 | <<locked>> | 96% | 48,196 psi | 76% | 2920 fps | 95.5% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 51,445 psi | 81% | 2995 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 88% | 41,481 psi | 65% | 2756 fps | 95.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 46,659 psi | 73% | 2795 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 49,980 psi | 78% | 2871 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 36,318 psi | 57% | 2671 fps | 98.3% |
| Alliant Reloder-17 | 55 gr | 80% | 41,234 psi | 65% | 2795 fps | 99.9% |
| Alliant Reloder-19 | <<locked>> | 88% | 41,031 psi | 64% | 2749 fps | 95% |
| Alliant Reloder-22 | <<locked>> | 92% | 41,321 psi | 65% | 2799 fps | 95.3% |
| Alliant Reloder-23 | <<locked>> | 80% | 26,310 psi | 41% | 2405 fps | 95.7% |
| Alliant Reloder-25 | <<locked>> | 90% | 32,053 psi | 50% | 2589 fps | 95.1% |
| Alliant Reloder-26 | 57.8 gr | 82% | 30,211 psi | 47% | 2575 fps | 95.1% |
| Bofors RP15 | <<locked>> | 96% | 43,555 psi | 68% | 2844 fps | 95.8% |
| Bofors RP3 | <<locked>> | 80% | 46,789 psi | 73% | 2805 fps | 100% |
| Bofors RP5 | <<locked>> | 92% | 41,321 psi | 65% | 2799 fps | 95.3% |
| Bofors RP7 | <<locked>> | 80% | 41,249 psi | 65% | 2674 fps | 96.2% |
| Hodgdon H380 | <<locked>> | 80% | 47,340 psi | 74% | 2818 fps | 99.5% |
| Hodgdon H414 | <<locked>> | 80% | 39,160 psi | 61% | 2703 fps | 96.2% |
| Hodgdon H4350 | <<locked>> | 80% | 42,177 psi | 66% | 2730 fps | 95.7% |
| Hodgdon H4831 | <<locked>> | 96% | 51,996 psi | 81% | 2936 fps | 95.8% |
| Hodgdon H4831 SC | <<locked>> | 96% | 50,618 psi | 79% | 2910 fps | 95.5% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 33,866 psi | 53% | 2559 fps | 98.8% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 51,880 psi | 81% | 2917 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 98% | 40,654 psi | 64% | 2854 fps | 95.4% |
| Hodgdon Superformance | <<locked>> | 80% | 38,290 psi | 60% | 2717 fps | 95.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,122 psi | 43% | 1647 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 52,707 psi | 83% | 2881 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 48,573 psi | 76% | 2808 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 80% | 50,966 psi | 80% | 2841 fps | 98.8% |
| IMR 4350 | <<locked>> | 82% | 39,508 psi | 62% | 2657 fps | 95.7% |
| IMR 4451 Enduron | <<locked>> | 80% | 42,699 psi | 67% | 2707 fps | 97.1% |
| IMR 4831 | <<locked>> | 80% | 35,636 psi | 56% | 2605 fps | 97.9% |
| IMR 4895 | <<locked>> | 80% | 51,300 psi | 80% | 2897 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 50,241 psi | 79% | 2867 fps | 95.6% |
| IMR 7828 SSC | <<locked>> | 98% | 49,371 psi | 77% | 2956 fps | 96% |
| Lovex S060 | <<locked>> | 80% | 53,229 psi | 83% | 2848 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 48,646 psi | 76% | 2802 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 40,089 psi | 63% | 2654 fps | 97.8% |
| Lovex S070 | <<locked>> | 80% | 38,348 psi | 60% | 2635 fps | 96.2% |
| Lovex S071 | <<locked>> | 92% | 34,534 psi | 54% | 2575 fps | 95.7% |
| Norma 201 | <<locked>> | 80% | 52,982 psi | 83% | 2864 fps | 100% |
| Norma 202 | <<locked>> | 80% | 53,824 psi | 84% | 2861 fps | 100% |
| Norma 203B | <<locked>> | 80% | 49,298 psi | 77% | 2854 fps | 100% |
| Norma 204 | <<locked>> | 84% | 41,887 psi | 66% | 2746 fps | 95% |
| Norma MRP | <<locked>> | 88% | 37,695 psi | 59% | 2746 fps | 95.6% |
| Norma URP | <<locked>> | 80% | 37,043 psi | 58% | 2651 fps | 98.1% |
| Ramshot Big Game | <<locked>> | 80% | 49,748 psi | 78% | 2877 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 46,064 psi | 72% | 2904 fps | 95.4% |
| Ramshot Hunter | <<locked>> | 80% | 35,969 psi | 56% | 2638 fps | 96.1% |
| Ramshot Magnum | <<locked>> | 96% | 40,843 psi | 64% | 2772 fps | 95.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,499 psi | 43% | 1683 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 47,485 psi | 74% | 2805 fps | 98.7% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 43,874 psi | 69% | 2854 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 37,014 psi | 58% | 2674 fps | 97.9% |
| ReloadSwiss RS 70 | 55.9 gr | 80% | 35,998 psi | 56% | 2680 fps | 97.2% |
| ReloadSwiss RS 76 | <<locked>> | 96% | 37,710 psi | 59% | 2776 fps | 95.5% |
| Rottweil R 902 | <<locked>> | 80% | 50,531 psi | 79% | 2815 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 44,106 psi | 69% | 2749 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 45,890 psi | 72% | 2795 fps | 95.1% |
| Rottweil R 905 | <<locked>> | 90% | 42,946 psi | 67% | 2792 fps | 95.8% |
| Rottweil R 907 | <<locked>> | 80% | 41,249 psi | 65% | 2674 fps | 96.2% |
| Shooters World Long Rifle | <<locked>> | 80% | 40,089 psi | 63% | 2654 fps | 97.8% |
| Shooters World Precision | <<locked>> | 80% | 48,646 psi | 76% | 2802 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 38,348 psi | 60% | 2635 fps | 96.2% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 45,542 psi | 71% | 2812 fps | 99.9% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 53,040 psi | 83% | 2897 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 53,853 psi | 84% | 2795 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 45,513 psi | 71% | 2661 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 39,320 psi | 62% | 2598 fps | 96.4% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 42,554 psi | 67% | 2785 fps | 95.7% |
| Somchem S335 | <<locked>> | 80% | 53,563 psi | 84% | 2792 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 44,382 psi | 70% | 2749 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 50,415 psi | 79% | 2844 fps | 95.4% |
| Somchem S365 | <<locked>> | 80% | 33,460 psi | 52% | 2605 fps | 99.6% |
| Somchem S385 | <<locked>> | 86% | 37,985 psi | 60% | 2654 fps | 95.1% |
| Vihtavuori N135 | <<locked>> | 80% | 50,792 psi | 80% | 2779 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 51,140 psi | 80% | 2795 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 42,496 psi | 67% | 2680 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 38,522 psi | 60% | 2654 fps | 98.4% |
| Vihtavuori N165 | <<locked>> | 92% | 40,016 psi | 63% | 2687 fps | 95.4% |
| Vihtavuori N540 | <<locked>> | 80% | 49,356 psi | 77% | 2785 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 37,855 psi | 59% | 2651 fps | 98.1% |
| Vihtavuori N555 | <<locked>> | 80% | 28,950 psi | 45% | 2480 fps | 95.9% |
| Vihtavuori N560 | <<locked>> | 96% | 50,604 psi | 79% | 2995 fps | 95.9% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 37,724 psi | 59% | 2625 fps | 99.7% |
| Winchester 760 | <<locked>> | 80% | 39,363 psi | 62% | 2710 fps | 96.3% |
| Winchester StaBALL HD | <<locked>> | 82% | 24,743 psi | 39% | 2425 fps | 95.2% |
| Winchester StaBALL Match | <<locked>> | 80% | 53,026 psi | 83% | 2900 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 43,047 psi | 67% | 2756 fps | 95.6% |
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 | 145gr | Fox Classic Hunter. Alliant Reloder-26 delivers the highest muzzle velocity at 3,120 fps; across all powders the maximum-charge window runs from 1,841 fps to 3,120 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 145.0 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. ReloadSwiss RS 70, Alliant Reloder-26, Alliant Reloder-17 rank at the top here: for 7 mm WSM with the .284 | 145gr | Fox Classic Hunter 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.