Load data for 7 mm Rem. Mag. + .284 | 125gr | Lehigh Defense Controlled Chaos

7 mm Rem. Mag. cartridge drawing
Lehigh Defense logo

Load Specifications

Bullet Manufacturer:Lehigh Defense
Bullet Weight:125 gr
Bullet Diameter:0.284"
Bullet Length:<<locked>>
Case Length (l3):2.5"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:82 Grains of Water
Primer Size:Large Rifle Magnum (LRM)
Barrel Length:24"
Max. allowed Pressure:62,366 psi
Recommended Twist Rate:1:10.0

Load data in caliber 7 mm Rem. Mag. with .284 | 125gr | Lehigh Defense Controlled Chaos bullet and 93 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-16, ReloadSwiss RS 70 and Ramshot Hunter.

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"

PowderChargeFRMaxP%V(0)z
Accurate 2495<<locked>>84%56,144 psi90%3058 fps100%
Accurate 2700<<locked>>88%55,463 psi89%3068 fps97.7%
Accurate 3100ᴾ<<locked>>100%51,169 psi82%3084 fps98.5%
Accurate 4064<<locked>>86%56,347 psi90%3110 fps100%
Accurate 4350<<locked>>92%53,432 psi86%3156 fps99.7%
ADI AR 2206H<<locked>>82%55,579 psi89%3143 fps100%
ADI AR 2208<<locked>>86%53,345 psi86%3087 fps99.9%
ADI AR 2209<<locked>>98%54,621 psi88%3192 fps96.8%
Alliant Power Pro 2000-MR<<locked>>84%56,043 psi90%3278 fps100%
Alliant Reloder- TS 15.5<<locked>>86%53,809 psi86%3114 fps100%
Alliant Reloder-15<<locked>>84%54,070 psi87%3136 fps99.9%
Alliant Reloder-16<<locked>>94%54,244 psi87%3219 fps99.9%
Alliant Reloder-17<<locked>>90%55,448 psi89%3245 fps100%
Alliant Reloder-19<<locked>>98%53,954 psi87%3179 fps96.8%
Alliant Reloder-22ᴾ<<locked>>100%51,053 psi82%3169 fps96.3%
Alliant Reloder-23ᴾ<<locked>>100%48,182 psi77%3114 fps100%
Alliant Reloder-25ᴾ<<locked>>100%42,090 psi67%3009 fps97.3%
Alliant Reloder-26ᴾ<<locked>>100%55,492 psi89%3320 fps99.9%
Baschieri & Pellagri 107<<locked>>82%55,434 psi89%3153 fps99.9%
Bofors RP3<<locked>>86%54,607 psi88%3130 fps100%
Bofors RP5ᴾ<<locked>>100%51,053 psi82%3169 fps96.3%
Bofors RP7<<locked>>90%54,288 psi87%3104 fps97.7%
Hodgdon H380<<locked>>86%55,274 psi89%3146 fps99.6%
Hodgdon H414<<locked>>88%53,388 psi86%3166 fps98.1%
Hodgdon H4350<<locked>>92%53,896 psi86%3136 fps97%
Hodgdon H4895<<locked>>82%56,173 psi90%3153 fps100%
Hodgdon Hybrid 100V<<locked>>96%54,534 psi87%3140 fps100%
Hodgdon LEVERevolution<<locked>>84%53,026 psi85%3136 fps100%
Hodgdon Superformance<<locked>>92%56,159 psi90%3248 fps98.4%
Hodgdon TrailBossᴾ<<locked>>100%36,143 psi58%1985 fps100%
Hodgdon VARGET<<locked>>86%56,260 psi90%3140 fps100%
IMR 3031<<locked>>84%55,332 psi89%3110 fps100%
IMR 4064<<locked>>88%55,390 psi89%3117 fps100%
IMR 4166 Enduron<<locked>>88%54,476 psi87%3087 fps98.2%
IMR 4350<<locked>>94%55,085 psi88%3133 fps97.9%
IMR 4451 Enduron<<locked>>90%55,985 psi90%3136 fps98.4%
IMR 4831<<locked>>98%54,636 psi88%3159 fps99.8%
IMR 4895<<locked>>84%55,448 psi89%3166 fps100%
Lovex D073.6<<locked>>82%55,956 psi90%3114 fps100%
Lovex S060<<locked>>82%54,273 psi87%3058 fps100%
Lovex S062<<locked>>86%56,289 psi90%3120 fps100%
Lovex S065<<locked>>92%55,840 psi90%3133 fps99.3%
Lovex S070<<locked>>92%53,722 psi86%3117 fps98.3%
Lovex S071ᴾ<<locked>>100%42,380 psi68%2917 fps96.6%
Norma 201<<locked>>82%54,085 psi87%3081 fps100%
Norma 202<<locked>>82%54,723 psi88%3077 fps100%
Norma 203B<<locked>>84%53,374 psi86%3120 fps100%
Norma 204<<locked>>94%55,782 psi89%3186 fps96.9%
Norma MRPᴾ<<locked>>100%54,230 psi87%3264 fps98.3%
Norma URP<<locked>>94%55,941 psi90%3202 fps99.8%
Ramshot Big Game<<locked>>84%54,230 psi87%3146 fps100%
Ramshot Hunter<<locked>>94%54,563 psi87%3192 fps99%
Ramshot Magnumᴾ<<locked>>100%50,154 psi80%3123 fps96.7%
ReloadSwiss RS 14ᴾ<<locked>>100%36,651 psi59%2031 fps100%
ReloadSwiss RS 50<<locked>>86%55,288 psi89%3127 fps98.8%
ReloadSwiss RS 52<<locked>>82%54,969 psi88%3209 fps99.9%
ReloadSwiss RS 60<<locked>>88%55,042 psi88%3245 fps100%
ReloadSwiss RS 62<<locked>>92%53,301 psi85%3176 fps99.6%
ReloadSwiss RS 70<<locked>>94%55,695 psi89%3268 fps99.8%
Rottweil R 902<<locked>>84%54,955 psi88%3084 fps100%
Rottweil R 903<<locked>>88%54,708 psi88%3123 fps100%
Rottweil R 904<<locked>>98%56,318 psi90%3159 fps95.9%
Rottweil R 905<<locked>>98%53,098 psi85%3159 fps96.7%
Rottweil R 907<<locked>>90%54,288 psi87%3104 fps97.7%
Shooters World Long Rifle<<locked>>92%55,840 psi90%3133 fps99.3%
Shooters World Match Rifle<<locked>>82%55,956 psi90%3114 fps100%
Shooters World Precision<<locked>>86%56,289 psi90%3120 fps100%
Shooters World SW4350<<locked>>92%53,722 psi86%3117 fps98.3%
SNPE Vectan SP 11<<locked>>88%56,318 psi90%3186 fps100%
SNPE Vectan SP 9<<locked>>82%53,998 psi87%3107 fps100%
SNPE Vectan Tubal 3000<<locked>>82%55,042 psi88%3012 fps100%
SNPE Vectan Tubal 5000<<locked>>88%55,970 psi90%3012 fps100%
SNPE Vectan Tubal 7000<<locked>>92%55,738 psi89%3081 fps98.4%
SNPE Vectan Tubal 8000ᴾ<<locked>>100%56,072 psi90%3215 fps97.3%
Somchem S335<<locked>>82%54,694 psi88%3009 fps100%
Somchem S341<<locked>>82%56,405 psi90%3127 fps100%
Somchem S355<<locked>>88%54,882 psi88%3123 fps100%
Somchem S365<<locked>>96%54,998 psi88%3205 fps100%
Somchem S385<<locked>>98%53,737 psi86%3136 fps97.6%
Unknown powder<<locked>>90%52,881 psi85%3146 fps99.3%
Vihtavuori N133<<locked>>84%55,201 psi89%2995 fps100%
Vihtavuori N135<<locked>>84%54,998 psi88%3045 fps100%
Vihtavuori N140<<locked>>84%54,694 psi88%3048 fps100%
Vihtavuori N150<<locked>>94%56,246 psi90%3104 fps100%
Vihtavuori N160<<locked>>90%53,374 psi86%3114 fps99.6%
Vihtavuori N165ᴾ<<locked>>100%47,761 psi77%3012 fps95.9%
Vihtavuori N540<<locked>>84%54,317 psi87%3074 fps100%
Vihtavuori N550<<locked>>90%53,896 psi86%3166 fps99.6%
Vihtavuori N555ᴾ<<locked>>100%53,766 psi86%3196 fps99.9%
Winchester 6.5 StaBALL<<locked>>92%54,331 psi87%3104 fps100%
Winchester 760<<locked>>88%53,388 psi86%3166 fps98.1%
Winchester StaBALL HDᴾ<<locked>>100%43,497 psi70%3156 fps100%
Winchester Supreme 780<<locked>>98%55,941 psi90%3163 fps97%

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%49,168 psi79%2953 fps100%
Accurate 2700<<locked>>82%45,455 psi73%2887 fps95.5%
Accurate 3100<<locked>>92%38,899 psi62%2838 fps95.5%
Accurate 4064<<locked>>80%46,557 psi75%2953 fps100%
Accurate 4350<<locked>>80%35,157 psi56%2772 fps96%
ADI AR 2206H<<locked>>80%52,040 psi83%3081 fps99.9%
ADI AR 2208<<locked>>80%44,222 psi71%2917 fps98.9%
ADI AR 2209<<locked>>94%47,906 psi77%3061 fps95.1%
Alliant Power Pro 2000-MR<<locked>>80%48,617 psi78%3140 fps99.6%
Alliant Reloder- TS 15.5<<locked>>80%44,527 psi71%2943 fps99.7%
Alliant Reloder-15<<locked>>80%47,616 psi76%3018 fps99.5%
Alliant Reloder-1653.2 gr80%34,635 psi56%2785 fps96%
Alliant Reloder-17<<locked>>80%39,102 psi63%2927 fps99%
Alliant Reloder-19<<locked>>94%47,442 psi76%3051 fps95.1%
Alliant Reloder-22<<locked>>98%47,674 psi76%3104 fps95.4%
Alliant Reloder-23<<locked>>86%30,545 psi49%2687 fps96%
Alliant Reloder-25<<locked>>96%37,043 psi59%2877 fps95.3%
Alliant Reloder-26<<locked>>88%35,650 psi57%2887 fps95.7%
Baschieri & Pellagri 107<<locked>>80%51,982 psi83%3094 fps99.6%
Bofors RP3<<locked>>80%44,744 psi72%2953 fps99.8%
Bofors RP5<<locked>>98%47,674 psi76%3104 fps95.4%
Bofors RP7<<locked>>84%44,991 psi72%2923 fps95.6%
Hodgdon H380<<locked>>80%45,223 psi73%2959 fps98.3%
Hodgdon H414<<locked>>82%43,453 psi70%2972 fps95.8%
Hodgdon H4350<<locked>>88%47,703 psi76%3018 fps95.5%
Hodgdon H4895<<locked>>80%52,620 psi84%3094 fps100%
Hodgdon Hybrid 100V<<locked>>80%32,024 psi51%2674 fps96.8%
Hodgdon LEVERevolution<<locked>>80%46,369 psi74%3015 fps99.9%
Hodgdon Superformance<<locked>>86%45,165 psi72%3035 fps95.9%
Hodgdon TrailBoss<<locked>>80%26,963 psi43%1778 fps100%
Hodgdon VARGET<<locked>>80%46,586 psi75%2969 fps99.8%
IMR 3031<<locked>>80%48,602 psi78%3005 fps100%
IMR 4064<<locked>>80%43,424 psi70%2894 fps98.9%
IMR 4166 Enduron<<locked>>80%42,772 psi69%2854 fps95.6%
IMR 4350<<locked>>86%42,844 psi69%2897 fps95%
IMR 4451 Enduron<<locked>>82%43,627 psi70%2900 fps95.7%
IMR 4831<<locked>>82%32,866 psi53%2697 fps95.2%
IMR 4895<<locked>>80%48,820 psi78%3048 fps99.8%
Lovex D073.6<<locked>>80%52,315 psi84%3058 fps100%
Lovex S060<<locked>>80%51,111 psi82%3005 fps99.9%
Lovex S062<<locked>>80%46,630 psi75%2956 fps100%
Lovex S065<<locked>>80%38,479 psi62%2785 fps95.7%
Lovex S070<<locked>>84%41,713 psi67%2874 fps95.5%
Lovex S071<<locked>>98%39,682 psi64%2858 fps95.8%
Norma 201<<locked>>80%50,850 psi82%3025 fps100%
Norma 202<<locked>>80%51,474 psi83%3025 fps100%
Norma 203B<<locked>>80%46,963 psi75%3002 fps99.6%
Norma 204<<locked>>90%48,689 psi78%3058 fps95.2%
Norma MRP<<locked>>94%43,845 psi70%3054 fps95.8%
Norma URP<<locked>>80%35,128 psi56%2769 fps95.8%
Ramshot Big Game<<locked>>80%47,239 psi76%3025 fps99.6%
Ramshot Hunter59.2 gr84%39,059 psi63%2877 fps95.4%
Ramshot Magnum<<locked>>98%46,383 psi74%3048 fps95.7%
ReloadSwiss RS 14<<locked>>80%27,499 psi44%1821 fps100%
ReloadSwiss RS 50<<locked>>80%45,339 psi73%2940 fps97%
ReloadSwiss RS 52<<locked>>80%51,314 psi82%3143 fps99.7%
ReloadSwiss RS 60<<locked>>80%41,582 psi67%2995 fps100%
ReloadSwiss RS 62<<locked>>80%34,867 psi56%2789 fps95.5%
ReloadSwiss RS 7059.6 gr82%36,680 psi59%2854 fps95.5%
Rottweil R 902<<locked>>80%48,385 psi78%2972 fps100%
Rottweil R 903<<locked>>80%42,047 psi67%2890 fps99.4%
Rottweil R 904<<locked>>96%52,910 psi85%3100 fps95.1%
Rottweil R 905<<locked>>94%46,398 psi74%3035 fps95%
Rottweil R 907<<locked>>84%44,991 psi72%2923 fps95.6%
Shooters World Long Rifle<<locked>>80%38,479 psi62%2785 fps95.7%
Shooters World Match Rifle<<locked>>80%52,315 psi84%3058 fps100%
Shooters World Precision<<locked>>80%46,630 psi75%2956 fps100%
Shooters World SW4350<<locked>>84%41,713 psi67%2874 fps95.5%
SNPE Vectan SP 11<<locked>>80%43,207 psi69%2946 fps99.1%
SNPE Vectan SP 9<<locked>>80%50,604 psi81%3048 fps99.9%
SNPE Vectan Tubal 3000<<locked>>80%51,663 psi83%2959 fps100%
SNPE Vectan Tubal 5000<<locked>>80%43,555 psi70%2812 fps100%
SNPE Vectan Tubal 7000<<locked>>84%43,091 psi69%2841 fps95.8%
SNPE Vectan Tubal 8000<<locked>>96%49,081 psi79%3091 fps95.8%
Somchem S335<<locked>>80%51,517 psi83%2959 fps100%
Somchem S341<<locked>>80%52,837 psi85%3071 fps100%
Somchem S355<<locked>>80%42,453 psi68%2894 fps99.3%
Somchem S365<<locked>>80%31,618 psi51%2720 fps98.1%
Somchem S385<<locked>>92%44,150 psi71%2953 fps95.3%
Unknown powder<<locked>>80%37,927 psi61%2835 fps96.1%
Vihtavuori N133<<locked>>80%48,994 psi79%2900 fps100%
Vihtavuori N135<<locked>>80%48,414 psi78%2940 fps100%
Vihtavuori N140<<locked>>80%48,124 psi77%2943 fps100%
Vihtavuori N150<<locked>>80%36,361 psi58%2726 fps99.2%
Vihtavuori N160<<locked>>80%37,971 psi61%2808 fps96.8%
Vihtavuori N165<<locked>>98%44,802 psi72%2953 fps95.1%
Vihtavuori N540<<locked>>80%47,935 psi77%2966 fps100%
Vihtavuori N550<<locked>>80%38,638 psi62%2854 fps96.9%
Vihtavuori N555<<locked>>84%31,473 psi50%2710 fps95.1%
Winchester 6.5 StaBALL<<locked>>80%35,969 psi58%2746 fps98.4%
Winchester 760<<locked>>82%43,453 psi70%2972 fps95.8%
Winchester StaBALL HD<<locked>>88%28,964 psi46%2717 fps95.8%
Winchester Supreme 780<<locked>>94%48,254 psi77%3025 fps95.3%

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 106 powders for 7 mm Rem. Mag. loaded with the .284 | 125gr | Lehigh Defense Controlled Chaos. Alliant Reloder-26 delivers the highest muzzle velocity at 3,320 fps; across all powders the maximum-charge window runs from 1,985 fps to 3,320 fps. Accurate 3100 gives the best case fill at 100 %, and 106 of the 106 powders fall inside the usable 80–100 % fill window.

Relative to the caliber's maximum pressure (430 MPa), the top charges use 58–90 %, leaving at least 10 % headroom. The 125.0 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. Alliant Reloder-16, ReloadSwiss RS 70, Ramshot Hunter rank at the top here: for 7 mm Rem. Mag. with the .284 | 125gr | Lehigh Defense Controlled Chaos they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate MAGPRO, ADI AR 2213, Bofors RP15 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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