Load data for 7 mm WSM + .284 | 135gr | Atomic 29 HP

7 mm WSM cartridge drawing
Atomic 29 logo

Load Specifications

Bullet Manufacturer:Atomic 29
Bullet Weight:135 gr
Bullet Diameter:0.284"
Bullet Length:<<locked>>
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:1:11.0

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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Max Load - Barrel Length: 24"

PowderChargeFRMaxP%V(0)z
Accurate 2495<<locked>>82%55,085 psi86%2936 fps100%
Accurate 2700<<locked>>84%56,478 psi89%3009 fps98.6%
Accurate 3100ᴾ<<locked>>100%54,404 psi85%3051 fps99.5%
Accurate 4064<<locked>>84%55,724 psi87%2999 fps100%
Accurate 4350<<locked>>92%56,565 psi89%3107 fps100%
Accurate MAGPROᴾ<<locked>>100%56,811 psi89%3199 fps95.9%
ADI AR 2208<<locked>>86%55,477 psi87%3028 fps100%
ADI AR 2209<<locked>>98%57,508 psi90%3150 fps98.2%
ADI AR 2213ᴾ<<locked>>100%55,085 psi86%3136 fps96.5%
Alliant Power Pro 2000-MR<<locked>>82%55,042 psi86%3156 fps100%
Alliant Reloder- TS 15.5<<locked>>86%56,449 psi88%3054 fps100%
Alliant Reloder-15<<locked>>84%56,652 psi89%3077 fps100%
Alliant Reloder-16<<locked>>94%57,101 psi89%3166 fps100%
Alliant Reloder-17<<locked>>88%54,752 psi86%3133 fps100%
Alliant Reloder-19<<locked>>98%56,608 psi89%3133 fps98.1%
Alliant Reloder-22ᴾ<<locked>>100%54,012 psi85%3133 fps97.8%
Alliant Reloder-23ᴾ<<locked>>100%50,923 psi80%3064 fps100%
Alliant Reloder-25ᴾ<<locked>>100%44,338 psi69%2982 fps98.8%
Alliant Reloder-26<<locked>>98%54,868 psi86%3212 fps100%
Bofors RP15ᴾ<<locked>>100%49,632 psi78%3054 fps96.8%
Bofors RP3<<locked>>86%57,479 psi90%3074 fps100%
Bofors RP5ᴾ<<locked>>100%54,012 psi85%3133 fps97.8%
Bofors RP7<<locked>>90%56,608 psi89%3051 fps98.8%
Hodgdon H380<<locked>>84%54,056 psi85%3031 fps99.8%
Hodgdon H414<<locked>>90%54,882 psi86%3100 fps99%
Hodgdon H4350<<locked>>88%54,578 psi86%3054 fps98%
Hodgdon H4831<<locked>>98%55,288 psi87%3081 fps95.9%
Hodgdon Hybrid 100V<<locked>>96%57,537 psi90%3084 fps100%
Hodgdon LEVERevolution<<locked>>82%55,303 psi87%3068 fps100%
Hodgdon Superformance<<locked>>90%55,405 psi87%3140 fps98.9%
Hodgdon TrailBossᴾ<<locked>>100%36,289 psi57%1916 fps100%
Hodgdon VARGET<<locked>>82%56,057 psi88%3035 fps100%
IMR 4064<<locked>>84%54,969 psi86%3012 fps100%
IMR 4166 Enduron<<locked>>82%54,215 psi85%2989 fps98.8%
IMR 4350<<locked>>94%57,711 psi90%3087 fps99%
IMR 4451 Enduron<<locked>>88%54,882 psi86%3028 fps98.9%
IMR 4831<<locked>>94%56,768 psi89%3097 fps100%
IMR 4895<<locked>>82%54,433 psi85%3048 fps100%
IMR 4955 Enduron<<locked>>98%56,869 psi89%3071 fps96.4%
IMR 7828 SSCᴾ<<locked>>100%52,547 psi82%3107 fps96%
Lovex S060<<locked>>82%56,405 psi88%2995 fps100%
Lovex S062<<locked>>84%55,434 psi87%3009 fps100%
Lovex S065<<locked>>90%54,897 psi86%3022 fps99.6%
Lovex S070<<locked>>92%56,246 psi88%3064 fps99.2%
Lovex S071ᴾ<<locked>>100%45,078 psi71%2887 fps98.1%
Norma 201<<locked>>82%56,478 psi89%3015 fps100%
Norma 202<<locked>>82%57,174 psi90%3012 fps100%
Norma 203B<<locked>>84%55,941 psi88%3061 fps100%
Norma 204<<locked>>92%54,897 psi86%3081 fps97.6%
Norma MRPᴾ<<locked>>100%57,537 psi90%3225 fps99.4%
Norma URP<<locked>>92%55,042 psi86%3091 fps100%
Ramshot Big Game<<locked>>84%56,884 psi89%3091 fps100%
Ramshot Grandᴾ<<locked>>100%52,765 psi83%3120 fps96.5%
Ramshot Hunter<<locked>>94%57,609 psi90%3146 fps99.7%
Ramshot Magnumᴾ<<locked>>100%47,166 psi74%2986 fps97%
ReloadSwiss RS 14ᴾ<<locked>>100%37,072 psi58%1962 fps100%
ReloadSwiss RS 50<<locked>>84%54,128 psi85%3015 fps99.2%
ReloadSwiss RS 60<<locked>>86%54,273 psi85%3127 fps100%
ReloadSwiss RS 62<<locked>>92%56,521 psi89%3130 fps100%
ReloadSwiss RS 70<<locked>>92%54,752 psi86%3153 fps99.9%
ReloadSwiss RS 76ᴾ<<locked>>100%43,439 psi68%2999 fps96.9%
Rottweil R 902<<locked>>84%57,377 psi90%3022 fps100%
Rottweil R 903<<locked>>88%57,653 psi90%3068 fps100%
Rottweil R 904<<locked>>96%55,564 psi87%3058 fps96.8%
Rottweil R 905<<locked>>98%55,854 psi88%3117 fps98.1%
Rottweil R 907<<locked>>90%56,608 psi89%3051 fps98.8%
Shooters World Long Rifle<<locked>>90%54,897 psi86%3022 fps99.6%
Shooters World Precision<<locked>>84%55,434 psi87%3009 fps100%
Shooters World SW4350<<locked>>92%56,246 psi88%3064 fps99.2%
SNPE Vectan SP 11<<locked>>86%55,347 psi87%3071 fps100%
SNPE Vectan SP 9<<locked>>82%56,478 psi89%3048 fps100%
SNPE Vectan Tubal 3000<<locked>>82%57,174 psi90%2943 fps100%
SNPE Vectan Tubal 5000<<locked>>86%54,853 psi86%2897 fps100%
SNPE Vectan Tubal 7000<<locked>>90%54,679 psi86%2972 fps98.9%
SNPE Vectan Tubal 8000<<locked>>98%55,361 psi87%3110 fps98%
Somchem S335<<locked>>82%56,913 psi89%2940 fps100%
Somchem S355<<locked>>88%57,290 psi90%3061 fps100%
Somchem S361<<locked>>96%57,406 psi90%3051 fps96.3%
Somchem S365<<locked>>94%54,433 psi85%3094 fps100%
Somchem S385<<locked>>98%56,811 psi89%3097 fps98.8%
Vihtavuori N133<<locked>>82%57,667 psi90%2923 fps100%
Vihtavuori N135<<locked>>84%57,595 psi90%2976 fps100%
Vihtavuori N140<<locked>>82%54,302 psi85%2940 fps100%
Vihtavuori N150<<locked>>88%55,288 psi87%2982 fps100%
Vihtavuori N160<<locked>>92%57,246 psi90%3084 fps100%
Vihtavuori N165ᴾ<<locked>>100%52,402 psi82%3009 fps97.9%
Vihtavuori N540<<locked>>84%56,014 psi88%2986 fps100%
Vihtavuori N550<<locked>>92%56,231 psi88%3087 fps100%
Vihtavuori N555ᴾ<<locked>>100%57,203 psi90%3150 fps100%
Vihtavuori N560<<locked>>98%53,911 psi84%3146 fps96%
Winchester 6.5 StaBALL<<locked>>92%57,000 psi89%3048 fps100%
Winchester 760<<locked>>90%55,143 psi86%3104 fps99%
Winchester StaBALL HDᴾ<<locked>>100%46,195 psi72%3127 fps100%
Winchester StaBALL Match<<locked>>82%56,710 psi89%3058 fps100%
Winchester Supreme 780ᴾ<<locked>>100%56,927 psi89%3087 fps98%

Recommended = one of the top powders for this cartridge and bullet combination.

Start Load - Barrel Length: 24"

PowderChargeFRMaxP%V(0)z
Accurate 2495<<locked>>80%51,663 psi81%2890 fps100%
Accurate 2700<<locked>>80%49,313 psi77%2887 fps97.4%
Accurate 3100<<locked>>88%36,071 psi57%2690 fps95.6%
Accurate 4064<<locked>>80%48,936 psi77%2894 fps100%
Accurate 4350<<locked>>80%37,333 psi59%2743 fps97.7%
Accurate MAGPRO<<locked>>98%52,678 psi83%3127 fps95%
ADI AR 2208<<locked>>80%46,151 psi72%2864 fps99.6%
ADI AR 2209<<locked>>90%44,164 psi69%2900 fps95.1%
ADI AR 2213<<locked>>98%51,648 psi81%3074 fps95.7%
Alliant Power Pro 2000-MR<<locked>>80%51,053 psi80%3091 fps100%
Alliant Reloder- TS 15.5<<locked>>80%46,673 psi73%2890 fps100%
Alliant Reloder-15<<locked>>80%49,879 psi78%2963 fps99.9%
Alliant Reloder-16<<locked>>80%36,405 psi57%2753 fps97.8%
Alliant Reloder-17<<locked>>80%41,191 psi65%2887 fps99.8%
Alliant Reloder-19<<locked>>90%43,714 psi69%2894 fps95.1%
Alliant Reloder-22<<locked>>94%44,106 psi69%2946 fps95.4%
Alliant Reloder-23<<locked>>80%26,658 psi42%2484 fps95%
Alliant Reloder-25<<locked>>92%34,461 psi54%2733 fps95.4%
Alliant Reloder-2661 gr84%32,880 psi52%2733 fps95.7%
Bofors RP15<<locked>>96%43,468 psi68%2927 fps95%
Bofors RP3<<locked>>80%47,108 psi74%2904 fps100%
Bofors RP5<<locked>>94%44,106 psi69%2946 fps95.4%
Bofors RP7<<locked>>80%41,394 psi65%2762 fps95.6%
Hodgdon H380<<locked>>80%47,485 psi74%2913 fps99.3%
Hodgdon H414<<locked>>80%39,262 psi62%2792 fps95.5%
Hodgdon H4350<<locked>>80%42,279 psi66%2818 fps95%
Hodgdon H4831<<locked>>96%51,605 psi81%3018 fps95%
Hodgdon Hybrid 100V<<locked>>80%33,852 psi53%2641 fps98.3%
Hodgdon LEVERevolution<<locked>>80%51,706 psi81%3012 fps100%
Hodgdon Superformance61.4 gr82%41,249 psi65%2867 fps95.8%
Hodgdon TrailBoss<<locked>>80%27,180 psi43%1716 fps100%
Hodgdon VARGET<<locked>>80%52,489 psi82%2979 fps100%
IMR 4064<<locked>>80%48,544 psi76%2900 fps99.9%
IMR 4166 Enduron<<locked>>80%50,778 psi80%2930 fps98.3%
IMR 4350<<locked>>84%42,148 psi66%2799 fps95.8%
IMR 4451 Enduron<<locked>>80%42,888 psi67%2799 fps96.5%
IMR 4831<<locked>>80%35,824 psi56%2690 fps97.3%
IMR 4895<<locked>>80%51,155 psi80%2995 fps100%
IMR 4955 Enduron<<locked>>96%53,301 psi84%3012 fps95.7%
IMR 7828 SSC<<locked>>98%49,023 psi77%3038 fps95.1%
Lovex S060<<locked>>80%53,098 psi83%2943 fps100%
Lovex S062<<locked>>80%48,762 psi76%2897 fps100%
Lovex S065<<locked>>80%40,277 psi63%2743 fps97.2%
Lovex S070<<locked>>80%38,566 psi60%2720 fps95.5%
Lovex S071<<locked>>92%34,795 psi55%2661 fps95.1%
Norma 201<<locked>>80%53,098 psi83%2963 fps100%
Norma 202<<locked>>80%53,751 psi84%2959 fps100%
Norma 203B<<locked>>80%49,226 psi77%2949 fps100%
Norma 204<<locked>>86%44,715 psi70%2890 fps95.2%
Norma MRP<<locked>>90%40,596 psi64%2897 fps95.8%
Norma URP<<locked>>80%37,115 psi58%2740 fps97.5%
Ramshot Big Game<<locked>>80%49,559 psi78%2969 fps100%
Ramshot Grand<<locked>>98%49,371 psi77%3054 fps95.6%
Ramshot Hunter<<locked>>80%36,085 psi57%2723 fps95.4%
Ramshot Magnum<<locked>>96%40,857 psi64%2851 fps95%
ReloadSwiss RS 14<<locked>>80%27,572 psi43%1752 fps100%
ReloadSwiss RS 50<<locked>>80%47,471 psi74%2894 fps98.2%
ReloadSwiss RS 60<<locked>>80%43,772 psi69%2946 fps100%
ReloadSwiss RS 62<<locked>>80%37,130 psi58%2759 fps97.3%
ReloadSwiss RS 7057.5 gr80%36,042 psi56%2762 fps96.5%
ReloadSwiss RS 76<<locked>>98%40,567 psi64%2927 fps95.8%
Rottweil R 902<<locked>>80%50,705 psi79%2917 fps100%
Rottweil R 903<<locked>>80%44,251 psi69%2844 fps99.9%
Rottweil R 904<<locked>>92%48,791 psi76%2940 fps95.2%
Rottweil R 905<<locked>>90%42,902 psi67%2874 fps95.1%
Rottweil R 907<<locked>>80%41,394 psi65%2762 fps95.6%
Shooters World Long Rifle<<locked>>80%40,277 psi63%2743 fps97.2%
Shooters World Precision<<locked>>80%48,762 psi76%2897 fps100%
Shooters World SW4350<<locked>>80%38,566 psi60%2720 fps95.5%
SNPE Vectan SP 11<<locked>>80%45,527 psi71%2900 fps99.8%
SNPE Vectan SP 9<<locked>>80%52,953 psi83%2992 fps100%
SNPE Vectan Tubal 3000<<locked>>80%53,940 psi85%2894 fps100%
SNPE Vectan Tubal 5000<<locked>>80%45,629 psi72%2756 fps100%
SNPE Vectan Tubal 7000<<locked>>80%39,465 psi62%2684 fps95.7%
SNPE Vectan Tubal 8000<<locked>>92%45,382 psi71%2930 fps95.8%
Somchem S335<<locked>>80%53,606 psi84%2890 fps100%
Somchem S355<<locked>>80%44,556 psi70%2844 fps99.9%
Somchem S361<<locked>>94%53,809 psi84%2989 fps95.5%
Somchem S365<<locked>>80%33,605 psi53%2694 fps99.3%
Somchem S385<<locked>>88%40,698 psi64%2795 fps95.3%
Vihtavuori N133<<locked>>80%54,491 psi85%2877 fps100%
Vihtavuori N135<<locked>>80%50,981 psi80%2881 fps100%
Vihtavuori N140<<locked>>80%51,010 psi80%2890 fps100%
Vihtavuori N150<<locked>>80%42,583 psi67%2772 fps100%
Vihtavuori N160<<locked>>80%38,522 psi60%2740 fps97.9%
Vihtavuori N165<<locked>>94%42,772 psi67%2828 fps95.5%
Vihtavuori N540<<locked>>80%49,429 psi77%2884 fps100%
Vihtavuori N550<<locked>>80%38,072 psi60%2740 fps97.6%
Vihtavuori N555<<locked>>80%29,269 psi46%2566 fps95.2%
Vihtavuori N560<<locked>>96%50,372 psi79%3081 fps95.1%
Winchester 6.5 StaBALL<<locked>>80%37,724 psi59%2707 fps99.4%
Winchester 760<<locked>>80%39,479 psi62%2795 fps95.6%
Winchester StaBALL HD<<locked>>84%26,847 psi42%2572 fps95.9%
Winchester StaBALL Match<<locked>>80%52,866 psi83%2995 fps100%
Winchester Supreme 780<<locked>>94%46,151 psi72%2904 fps95.8%

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.

<<locked>> you need an access license to unlock this data.

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.

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