
Load Specifications
Load data in caliber 7 mm WSM with .284 | 135gr | Atomic 29 HP bullet and 95 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 Hodgdon Superformance.
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% | 55,085 psi | 86% | 2936 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 56,478 psi | 89% | 3009 fps | 98.6% |
| Accurate 3100ᴾ | <<locked>> | 100% | 54,404 psi | 85% | 3051 fps | 99.5% |
| Accurate 4064 | <<locked>> | 84% | 55,724 psi | 87% | 2999 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 56,565 psi | 89% | 3107 fps | 100% |
| Accurate MAGPROᴾ | <<locked>> | 100% | 56,811 psi | 89% | 3199 fps | 95.9% |
| ADI AR 2208 | <<locked>> | 86% | 55,477 psi | 87% | 3028 fps | 100% |
| ADI AR 2209 | <<locked>> | 98% | 57,508 psi | 90% | 3150 fps | 98.2% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 55,085 psi | 86% | 3136 fps | 96.5% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 55,042 psi | 86% | 3156 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 56,449 psi | 88% | 3054 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 56,652 psi | 89% | 3077 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 94% | 57,101 psi | 89% | 3166 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 88% | 54,752 psi | 86% | 3133 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 98% | 56,608 psi | 89% | 3133 fps | 98.1% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 54,012 psi | 85% | 3133 fps | 97.8% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 50,923 psi | 80% | 3064 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 44,338 psi | 69% | 2982 fps | 98.8% |
| Alliant Reloder-26 | <<locked>> | 98% | 54,868 psi | 86% | 3212 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 49,632 psi | 78% | 3054 fps | 96.8% |
| Bofors RP3 | <<locked>> | 86% | 57,479 psi | 90% | 3074 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 54,012 psi | 85% | 3133 fps | 97.8% |
| Bofors RP7 | <<locked>> | 90% | 56,608 psi | 89% | 3051 fps | 98.8% |
| Hodgdon H380 | <<locked>> | 84% | 54,056 psi | 85% | 3031 fps | 99.8% |
| Hodgdon H414 | <<locked>> | 90% | 54,882 psi | 86% | 3100 fps | 99% |
| Hodgdon H4350 | <<locked>> | 88% | 54,578 psi | 86% | 3054 fps | 98% |
| Hodgdon H4831 | <<locked>> | 98% | 55,288 psi | 87% | 3081 fps | 95.9% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 57,537 psi | 90% | 3084 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 55,303 psi | 87% | 3068 fps | 100% |
| Hodgdon Superformance | <<locked>> | 90% | 55,405 psi | 87% | 3140 fps | 98.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,289 psi | 57% | 1916 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 56,057 psi | 88% | 3035 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 54,969 psi | 86% | 3012 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 82% | 54,215 psi | 85% | 2989 fps | 98.8% |
| IMR 4350 | <<locked>> | 94% | 57,711 psi | 90% | 3087 fps | 99% |
| IMR 4451 Enduron | <<locked>> | 88% | 54,882 psi | 86% | 3028 fps | 98.9% |
| IMR 4831 | <<locked>> | 94% | 56,768 psi | 89% | 3097 fps | 100% |
| IMR 4895 | <<locked>> | 82% | 54,433 psi | 85% | 3048 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 98% | 56,869 psi | 89% | 3071 fps | 96.4% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 52,547 psi | 82% | 3107 fps | 96% |
| Lovex S060 | <<locked>> | 82% | 56,405 psi | 88% | 2995 fps | 100% |
| Lovex S062 | <<locked>> | 84% | 55,434 psi | 87% | 3009 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 54,897 psi | 86% | 3022 fps | 99.6% |
| Lovex S070 | <<locked>> | 92% | 56,246 psi | 88% | 3064 fps | 99.2% |
| Lovex S071ᴾ | <<locked>> | 100% | 45,078 psi | 71% | 2887 fps | 98.1% |
| Norma 201 | <<locked>> | 82% | 56,478 psi | 89% | 3015 fps | 100% |
| Norma 202 | <<locked>> | 82% | 57,174 psi | 90% | 3012 fps | 100% |
| Norma 203B | <<locked>> | 84% | 55,941 psi | 88% | 3061 fps | 100% |
| Norma 204 | <<locked>> | 92% | 54,897 psi | 86% | 3081 fps | 97.6% |
| Norma MRPᴾ | <<locked>> | 100% | 57,537 psi | 90% | 3225 fps | 99.4% |
| Norma URP | <<locked>> | 92% | 55,042 psi | 86% | 3091 fps | 100% |
| Ramshot Big Game | <<locked>> | 84% | 56,884 psi | 89% | 3091 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 52,765 psi | 83% | 3120 fps | 96.5% |
| Ramshot Hunter | <<locked>> | 94% | 57,609 psi | 90% | 3146 fps | 99.7% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 47,166 psi | 74% | 2986 fps | 97% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,072 psi | 58% | 1962 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 54,128 psi | 85% | 3015 fps | 99.2% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 54,273 psi | 85% | 3127 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 56,521 psi | 89% | 3130 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 54,752 psi | 86% | 3153 fps | 99.9% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 43,439 psi | 68% | 2999 fps | 96.9% |
| Rottweil R 902 | <<locked>> | 84% | 57,377 psi | 90% | 3022 fps | 100% |
| Rottweil R 903 | <<locked>> | 88% | 57,653 psi | 90% | 3068 fps | 100% |
| Rottweil R 904 | <<locked>> | 96% | 55,564 psi | 87% | 3058 fps | 96.8% |
| Rottweil R 905 | <<locked>> | 98% | 55,854 psi | 88% | 3117 fps | 98.1% |
| Rottweil R 907 | <<locked>> | 90% | 56,608 psi | 89% | 3051 fps | 98.8% |
| Shooters World Long Rifle | <<locked>> | 90% | 54,897 psi | 86% | 3022 fps | 99.6% |
| Shooters World Precision | <<locked>> | 84% | 55,434 psi | 87% | 3009 fps | 100% |
| Shooters World SW4350 | <<locked>> | 92% | 56,246 psi | 88% | 3064 fps | 99.2% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 55,347 psi | 87% | 3071 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 56,478 psi | 89% | 3048 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 57,174 psi | 90% | 2943 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 54,853 psi | 86% | 2897 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 54,679 psi | 86% | 2972 fps | 98.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 55,361 psi | 87% | 3110 fps | 98% |
| Somchem S335 | <<locked>> | 82% | 56,913 psi | 89% | 2940 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 57,290 psi | 90% | 3061 fps | 100% |
| Somchem S361 | <<locked>> | 96% | 57,406 psi | 90% | 3051 fps | 96.3% |
| Somchem S365 | <<locked>> | 94% | 54,433 psi | 85% | 3094 fps | 100% |
| Somchem S385 | <<locked>> | 98% | 56,811 psi | 89% | 3097 fps | 98.8% |
| Vihtavuori N133 | <<locked>> | 82% | 57,667 psi | 90% | 2923 fps | 100% |
| Vihtavuori N135 | <<locked>> | 84% | 57,595 psi | 90% | 2976 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 54,302 psi | 85% | 2940 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 55,288 psi | 87% | 2982 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 57,246 psi | 90% | 3084 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 52,402 psi | 82% | 3009 fps | 97.9% |
| Vihtavuori N540 | <<locked>> | 84% | 56,014 psi | 88% | 2986 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 56,231 psi | 88% | 3087 fps | 100% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 57,203 psi | 90% | 3150 fps | 100% |
| Vihtavuori N560 | <<locked>> | 98% | 53,911 psi | 84% | 3146 fps | 96% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 57,000 psi | 89% | 3048 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 55,143 psi | 86% | 3104 fps | 99% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 46,195 psi | 72% | 3127 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 82% | 56,710 psi | 89% | 3058 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 56,927 psi | 89% | 3087 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% | 51,663 psi | 81% | 2890 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 49,313 psi | 77% | 2887 fps | 97.4% |
| Accurate 3100 | <<locked>> | 88% | 36,071 psi | 57% | 2690 fps | 95.6% |
| Accurate 4064 | <<locked>> | 80% | 48,936 psi | 77% | 2894 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 37,333 psi | 59% | 2743 fps | 97.7% |
| Accurate MAGPRO | <<locked>> | 98% | 52,678 psi | 83% | 3127 fps | 95% |
| ADI AR 2208 | <<locked>> | 80% | 46,151 psi | 72% | 2864 fps | 99.6% |
| ADI AR 2209 | <<locked>> | 90% | 44,164 psi | 69% | 2900 fps | 95.1% |
| ADI AR 2213 | <<locked>> | 98% | 51,648 psi | 81% | 3074 fps | 95.7% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 51,053 psi | 80% | 3091 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 46,673 psi | 73% | 2890 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 49,879 psi | 78% | 2963 fps | 99.9% |
| Alliant Reloder-16 | <<locked>> | 80% | 36,405 psi | 57% | 2753 fps | 97.8% |
| Alliant Reloder-17 | <<locked>> | 80% | 41,191 psi | 65% | 2887 fps | 99.8% |
| Alliant Reloder-19 | <<locked>> | 90% | 43,714 psi | 69% | 2894 fps | 95.1% |
| Alliant Reloder-22 | <<locked>> | 94% | 44,106 psi | 69% | 2946 fps | 95.4% |
| Alliant Reloder-23 | <<locked>> | 80% | 26,658 psi | 42% | 2484 fps | 95% |
| Alliant Reloder-25 | <<locked>> | 92% | 34,461 psi | 54% | 2733 fps | 95.4% |
| Alliant Reloder-26 | 61 gr | 84% | 32,880 psi | 52% | 2733 fps | 95.7% |
| Bofors RP15 | <<locked>> | 96% | 43,468 psi | 68% | 2927 fps | 95% |
| Bofors RP3 | <<locked>> | 80% | 47,108 psi | 74% | 2904 fps | 100% |
| Bofors RP5 | <<locked>> | 94% | 44,106 psi | 69% | 2946 fps | 95.4% |
| Bofors RP7 | <<locked>> | 80% | 41,394 psi | 65% | 2762 fps | 95.6% |
| Hodgdon H380 | <<locked>> | 80% | 47,485 psi | 74% | 2913 fps | 99.3% |
| Hodgdon H414 | <<locked>> | 80% | 39,262 psi | 62% | 2792 fps | 95.5% |
| Hodgdon H4350 | <<locked>> | 80% | 42,279 psi | 66% | 2818 fps | 95% |
| Hodgdon H4831 | <<locked>> | 96% | 51,605 psi | 81% | 3018 fps | 95% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 33,852 psi | 53% | 2641 fps | 98.3% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 51,706 psi | 81% | 3012 fps | 100% |
| Hodgdon Superformance | 61.4 gr | 82% | 41,249 psi | 65% | 2867 fps | 95.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,180 psi | 43% | 1716 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 52,489 psi | 82% | 2979 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 48,544 psi | 76% | 2900 fps | 99.9% |
| IMR 4166 Enduron | <<locked>> | 80% | 50,778 psi | 80% | 2930 fps | 98.3% |
| IMR 4350 | <<locked>> | 84% | 42,148 psi | 66% | 2799 fps | 95.8% |
| IMR 4451 Enduron | <<locked>> | 80% | 42,888 psi | 67% | 2799 fps | 96.5% |
| IMR 4831 | <<locked>> | 80% | 35,824 psi | 56% | 2690 fps | 97.3% |
| IMR 4895 | <<locked>> | 80% | 51,155 psi | 80% | 2995 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 53,301 psi | 84% | 3012 fps | 95.7% |
| IMR 7828 SSC | <<locked>> | 98% | 49,023 psi | 77% | 3038 fps | 95.1% |
| Lovex S060 | <<locked>> | 80% | 53,098 psi | 83% | 2943 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 48,762 psi | 76% | 2897 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 40,277 psi | 63% | 2743 fps | 97.2% |
| Lovex S070 | <<locked>> | 80% | 38,566 psi | 60% | 2720 fps | 95.5% |
| Lovex S071 | <<locked>> | 92% | 34,795 psi | 55% | 2661 fps | 95.1% |
| Norma 201 | <<locked>> | 80% | 53,098 psi | 83% | 2963 fps | 100% |
| Norma 202 | <<locked>> | 80% | 53,751 psi | 84% | 2959 fps | 100% |
| Norma 203B | <<locked>> | 80% | 49,226 psi | 77% | 2949 fps | 100% |
| Norma 204 | <<locked>> | 86% | 44,715 psi | 70% | 2890 fps | 95.2% |
| Norma MRP | <<locked>> | 90% | 40,596 psi | 64% | 2897 fps | 95.8% |
| Norma URP | <<locked>> | 80% | 37,115 psi | 58% | 2740 fps | 97.5% |
| Ramshot Big Game | <<locked>> | 80% | 49,559 psi | 78% | 2969 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 49,371 psi | 77% | 3054 fps | 95.6% |
| Ramshot Hunter | <<locked>> | 80% | 36,085 psi | 57% | 2723 fps | 95.4% |
| Ramshot Magnum | <<locked>> | 96% | 40,857 psi | 64% | 2851 fps | 95% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,572 psi | 43% | 1752 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 47,471 psi | 74% | 2894 fps | 98.2% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 43,772 psi | 69% | 2946 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 37,130 psi | 58% | 2759 fps | 97.3% |
| ReloadSwiss RS 70 | 57.5 gr | 80% | 36,042 psi | 56% | 2762 fps | 96.5% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 40,567 psi | 64% | 2927 fps | 95.8% |
| Rottweil R 902 | <<locked>> | 80% | 50,705 psi | 79% | 2917 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 44,251 psi | 69% | 2844 fps | 99.9% |
| Rottweil R 904 | <<locked>> | 92% | 48,791 psi | 76% | 2940 fps | 95.2% |
| Rottweil R 905 | <<locked>> | 90% | 42,902 psi | 67% | 2874 fps | 95.1% |
| Rottweil R 907 | <<locked>> | 80% | 41,394 psi | 65% | 2762 fps | 95.6% |
| Shooters World Long Rifle | <<locked>> | 80% | 40,277 psi | 63% | 2743 fps | 97.2% |
| Shooters World Precision | <<locked>> | 80% | 48,762 psi | 76% | 2897 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 38,566 psi | 60% | 2720 fps | 95.5% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 45,527 psi | 71% | 2900 fps | 99.8% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 52,953 psi | 83% | 2992 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 53,940 psi | 85% | 2894 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 45,629 psi | 72% | 2756 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 39,465 psi | 62% | 2684 fps | 95.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 45,382 psi | 71% | 2930 fps | 95.8% |
| Somchem S335 | <<locked>> | 80% | 53,606 psi | 84% | 2890 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 44,556 psi | 70% | 2844 fps | 99.9% |
| Somchem S361 | <<locked>> | 94% | 53,809 psi | 84% | 2989 fps | 95.5% |
| Somchem S365 | <<locked>> | 80% | 33,605 psi | 53% | 2694 fps | 99.3% |
| Somchem S385 | <<locked>> | 88% | 40,698 psi | 64% | 2795 fps | 95.3% |
| Vihtavuori N133 | <<locked>> | 80% | 54,491 psi | 85% | 2877 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 50,981 psi | 80% | 2881 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 51,010 psi | 80% | 2890 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 42,583 psi | 67% | 2772 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 38,522 psi | 60% | 2740 fps | 97.9% |
| Vihtavuori N165 | <<locked>> | 94% | 42,772 psi | 67% | 2828 fps | 95.5% |
| Vihtavuori N540 | <<locked>> | 80% | 49,429 psi | 77% | 2884 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 38,072 psi | 60% | 2740 fps | 97.6% |
| Vihtavuori N555 | <<locked>> | 80% | 29,269 psi | 46% | 2566 fps | 95.2% |
| Vihtavuori N560 | <<locked>> | 96% | 50,372 psi | 79% | 3081 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 37,724 psi | 59% | 2707 fps | 99.4% |
| Winchester 760 | <<locked>> | 80% | 39,479 psi | 62% | 2795 fps | 95.6% |
| Winchester StaBALL HD | <<locked>> | 84% | 26,847 psi | 42% | 2572 fps | 95.9% |
| Winchester StaBALL Match | <<locked>> | 80% | 52,866 psi | 83% | 2995 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 46,151 psi | 72% | 2904 fps | 95.8% |
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 103 powders for 7 mm WSM loaded with the .284 | 135gr | Atomic 29 HP. Norma MRP delivers the highest muzzle velocity at 3,225 fps; across all powders the maximum-charge window runs from 1,916 fps to 3,225 fps. Accurate 3100 gives the best case fill at 100 %, and 103 of the 103 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 56–90 %, leaving at least 10 % headroom. The 135.0 gr projectile in 0.284" calls for a 1:11.0 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, Hodgdon Superformance rank at the top here: for 7 mm WSM with the .284 | 135gr | Atomic 29 HP they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, ADI AR 2217, ADI AR 2225, Baschieri & Pellagri 109 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.