Load data for 6 x 62 R Freres + .243 | 85gr | Lehigh Defense Controlled Chaos

6 x 62 R Freres cartridge drawing
Lehigh Defense logo

Load Specifications

Bullet Manufacturer:Lehigh Defense
Bullet Weight:85 gr
Bullet Diameter:0.243"
Bullet Length:<<locked>>
Case Length (l3):2.425"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:68.3 Grains of Water
Primer Size:Large Rifle (LR)
Barrel Length:23.62"
Max. allowed Pressure:62,366 psi
Recommended Twist Rate:1:8.5

Load data in caliber 6 x 62 R Freres with .243 | 85gr | Lehigh Defense Controlled Chaos bullet and 71 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-26, Winchester StaBALL HD and IMR 7828 SSC.

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: 23.62"

PowderChargeFRMaxP%V(0)z
Accurate 3100<<locked>>96%55,753 psi89%3189 fps99.7%
Accurate 4350<<locked>>86%53,055 psi85%3182 fps99.9%
ADI AR 2208<<locked>>82%54,621 psi88%3163 fps100%
ADI AR 2209<<locked>>92%54,244 psi87%3228 fps97.9%
ADI AR 2213<<locked>>96%56,043 psi90%3287 fps97.2%
ADI AR 2225ᴾ<<locked>>100%41,640 psi67%3028 fps96.9%
Alliant Reloder- TS 15.5<<locked>>82%55,782 psi89%3189 fps100%
Alliant Reloder-16<<locked>>88%54,070 psi87%3251 fps100%
Alliant Reloder-17<<locked>>84%55,303 psi89%3268 fps100%
Alliant Reloder-19<<locked>>92%53,882 psi86%3215 fps97.9%
Alliant Reloder-22<<locked>>96%55,854 psi90%3284 fps98.4%
Alliant Reloder-23<<locked>>96%52,939 psi85%3209 fps100%
Alliant Reloder-25ᴾ<<locked>>100%52,562 psi84%3255 fps99.9%
Alliant Reloder-26<<locked>>92%53,432 psi86%3287 fps100%
Bofors RP15<<locked>>98%54,694 psi88%3261 fps98.1%
Bofors RP30ᴾ<<locked>>100%48,501 psi78%3163 fps96.1%
Bofors RP5<<locked>>96%55,854 psi90%3284 fps98.4%
Bofors RP7<<locked>>86%55,927 psi90%3189 fps98.9%
Hodgdon H1000ᴾ<<locked>>100%51,779 psi83%3192 fps97.2%
Hodgdon H414<<locked>>86%55,187 psi88%3238 fps99.2%
Hodgdon H4350<<locked>>84%54,172 psi87%3192 fps98.1%
Hodgdon H4831<<locked>>94%55,767 psi89%3219 fps96.4%
Hodgdon H4831 SC<<locked>>94%54,839 psi88%3205 fps96.2%
Hodgdon Hybrid 100V<<locked>>90%54,491 psi87%3169 fps100%
Hodgdon Retumboᴾ<<locked>>100%51,329 psi82%3301 fps98.4%
Hodgdon Superformance<<locked>>86%55,999 psi90%3271 fps99.2%
Hodgdon TrailBossᴾ<<locked>>100%36,738 psi59%2110 fps100%
IMR 4350<<locked>>88%53,896 psi86%3163 fps98.7%
IMR 4451 Enduron<<locked>>84%54,012 psi87%3159 fps98.9%
IMR 4831<<locked>>88%53,751 psi86%3176 fps100%
IMR 4955 Enduron<<locked>>92%53,432 psi86%3150 fps96.1%
IMR 7828 SSC<<locked>>96%53,592 psi86%3255 fps96.7%
Lovex S065<<locked>>86%54,389 psi87%3156 fps99.7%
Lovex S070<<locked>>88%56,275 psi90%3205 fps99.4%
Lovex S071ᴾ<<locked>>100%53,185 psi85%3150 fps99.5%
Norma 204<<locked>>88%54,926 psi88%3215 fps97.9%
Norma MRP<<locked>>94%55,666 psi89%3307 fps99.3%
Norma URP<<locked>>88%55,521 psi89%3228 fps100%
Ramshot Grand<<locked>>96%54,143 psi87%3271 fps97.3%
Ramshot Hunter<<locked>>88%54,360 psi87%3222 fps99.5%
Ramshot Magnum<<locked>>98%52,634 psi84%3202 fps98.6%
ReloadSwiss RS 14ᴾ<<locked>>100%37,521 psi60%2156 fps100%
ReloadSwiss RS 60<<locked>>82%54,708 psi88%3258 fps100%
ReloadSwiss RS 62<<locked>>86%53,417 psi86%3202 fps99.9%
ReloadSwiss RS 70<<locked>>88%55,506 psi89%3291 fps100%
ReloadSwiss RS 76ᴾ<<locked>>100%52,475 psi84%3304 fps99.5%
Rottweil R 903<<locked>>82%53,592 psi86%3146 fps100%
Rottweil R 904<<locked>>92%55,521 psi89%3199 fps97.1%
Rottweil R 905<<locked>>92%53,272 psi85%3202 fps97.9%
Rottweil R 907<<locked>>86%55,927 psi90%3189 fps98.9%
Shooters World Long Rifle<<locked>>86%54,389 psi87%3156 fps99.7%
Shooters World SW4350<<locked>>88%56,275 psi90%3205 fps99.4%
SNPE Vectan SP 11<<locked>>82%55,158 psi88%3205 fps100%
SNPE Vectan Tubal 5000<<locked>>82%53,737 psi86%3028 fps100%
SNPE Vectan Tubal 7000<<locked>>86%54,041 psi87%3104 fps99%
SNPE Vectan Tubal 8000<<locked>>94%56,333 psi90%3258 fps98.4%
Somchem S355<<locked>>82%53,127 psi85%3140 fps100%
Somchem S361<<locked>>90%53,925 psi86%3123 fps96.1%
Somchem S365<<locked>>90%55,564 psi89%3232 fps100%
Somchem S385<<locked>>92%53,969 psi87%3176 fps98.7%
Vihtavuori N150<<locked>>84%54,476 psi87%3114 fps100%
Vihtavuori N160<<locked>>86%53,461 psi86%3159 fps99.9%
Vihtavuori N165<<locked>>96%53,330 psi86%3146 fps98.3%
Vihtavuori N550<<locked>>86%52,852 psi85%3159 fps99.9%
Vihtavuori N555<<locked>>94%55,274 psi89%3238 fps100%
Vihtavuori N560<<locked>>94%55,535 psi89%3294 fps96.7%
Vihtavuori N565ᴾ<<locked>>100%55,332 psi89%3261 fps97%
Winchester 6.5 StaBALL<<locked>>86%53,374 psi86%3114 fps100%
Winchester 760<<locked>>86%55,187 psi88%3238 fps99.2%
Winchester StaBALL HD<<locked>>98%54,085 psi87%3340 fps100%
Winchester Supreme 780<<locked>>94%53,838 psi86%3163 fps97.9%

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

Start Load - Barrel Length: 23.62"

PowderChargeFRMaxP%V(0)z
Accurate 3100<<locked>>84%36,854 psi59%2818 fps95.8%
Accurate 4350<<locked>>80%43,018 psi69%2995 fps98.9%
ADI AR 2208<<locked>>80%51,126 psi82%3104 fps100%
ADI AR 2209<<locked>>86%44,309 psi71%3035 fps95.4%
ADI AR 2213<<locked>>92%48,704 psi78%3146 fps95.3%
ADI AR 2225<<locked>>98%38,928 psi62%2959 fps95.7%
Alliant Reloder- TS 15.5<<locked>>80%52,156 psi84%3130 fps100%
Alliant Reloder-16<<locked>>80%41,249 psi66%3002 fps99%
Alliant Reloder-17<<locked>>80%47,688 psi76%3136 fps100%
Alliant Reloder-19<<locked>>86%43,976 psi71%3018 fps95.3%
Alliant Reloder-22<<locked>>90%45,295 psi73%3084 fps95.9%
Alliant Reloder-23<<locked>>80%30,661 psi49%2723 fps97.1%
Alliant Reloder-25<<locked>>88%34,940 psi56%2858 fps95.8%
Alliant Reloder-2650.7 gr80%33,373 psi54%2848 fps95.8%
Bofors RP15<<locked>>92%44,672 psi72%3064 fps95.6%
Bofors RP30<<locked>>98%45,121 psi72%3094 fps95.1%
Bofors RP5<<locked>>90%45,295 psi73%3084 fps95.9%
Bofors RP7<<locked>>80%46,050 psi74%3005 fps97%
Hodgdon H1000<<locked>>96%44,875 psi72%3051 fps95.1%
Hodgdon H414<<locked>>80%44,744 psi72%3041 fps97.2%
Hodgdon H4350<<locked>>80%47,398 psi76%3064 fps96.6%
Hodgdon H4831<<locked>>92%52,040 psi83%3153 fps95.5%
Hodgdon H4831 SC<<locked>>92%51,126 psi82%3136 fps95.3%
Hodgdon Hybrid 100V<<locked>>80%38,899 psi62%2881 fps99.4%
Hodgdon Retumbo<<locked>>94%41,945 psi67%3084 fps95.4%
Hodgdon Superformance<<locked>>80%44,295 psi71%3051 fps96.8%
Hodgdon TrailBoss<<locked>>80%27,398 psi44%1893 fps100%
IMR 4350<<locked>>80%41,553 psi67%2920 fps95.8%
IMR 4451 Enduron<<locked>>80%47,398 psi76%3035 fps97.8%
IMR 4831<<locked>>80%41,060 psi66%2936 fps98.6%
IMR 4955 Enduron<<locked>>90%50,053 psi80%3087 fps95.2%
IMR 7828 SSC55.7 gr94%49,937 psi80%3182 fps95.8%
Lovex S065<<locked>>80%45,121 psi72%2982 fps98.4%
Lovex S070<<locked>>80%43,410 psi70%2963 fps97.1%
Lovex S071<<locked>>88%35,781 psi57%2792 fps95.4%
Norma 204<<locked>>82%44,701 psi72%3018 fps95.3%
Norma MRP<<locked>>84%38,522 psi62%2956 fps95.1%
Norma URP<<locked>>80%42,395 psi68%2982 fps98.8%
Ramshot Grand<<locked>>92%46,775 psi75%3127 fps95.2%
Ramshot Hunter<<locked>>80%41,220 psi66%2963 fps97.1%
Ramshot Magnum<<locked>>92%41,901 psi67%2986 fps95.8%
ReloadSwiss RS 14<<locked>>80%27,934 psi45%1936 fps100%
ReloadSwiss RS 60<<locked>>80%50,618 psi81%3196 fps100%
ReloadSwiss RS 62<<locked>>80%43,134 psi69%3012 fps98.8%
ReloadSwiss RS 70<<locked>>80%41,466 psi66%3018 fps98.3%
ReloadSwiss RS 76<<locked>>92%38,856 psi62%2989 fps95.5%
Rottweil R 903<<locked>>80%50,053 psi80%3091 fps100%
Rottweil R 904<<locked>>88%48,820 psi78%3074 fps95.5%
Rottweil R 905<<locked>>86%43,424 psi70%3009 fps95.4%
Rottweil R 907<<locked>>80%46,050 psi74%3005 fps97%
Shooters World Long Rifle<<locked>>80%45,121 psi72%2982 fps98.4%
Shooters World SW4350<<locked>>80%43,410 psi70%2963 fps97.1%
SNPE Vectan SP 11<<locked>>80%51,314 psi82%3140 fps100%
SNPE Vectan Tubal 5000<<locked>>80%50,227 psi81%2976 fps100%
SNPE Vectan Tubal 7000<<locked>>80%44,179 psi71%2920 fps97.2%
SNPE Vectan Tubal 8000<<locked>>86%43,047 psi69%3002 fps95.2%
Somchem S355<<locked>>80%49,995 psi80%3084 fps100%
Somchem S361<<locked>>88%50,241 psi81%3054 fps95.1%
Somchem S365<<locked>>80%39,001 psi63%2930 fps99.9%
Somchem S385<<locked>>84%41,133 psi66%2923 fps95.6%
Vihtavuori N150<<locked>>80%47,834 psi77%3002 fps100%
Vihtavuori N160<<locked>>80%43,787 psi70%2982 fps99%
Vihtavuori N165<<locked>>88%40,712 psi65%2900 fps95.1%
Vihtavuori N550<<locked>>80%43,221 psi69%2979 fps98.8%
Vihtavuori N555<<locked>>80%34,330 psi55%2812 fps97.1%
Vihtavuori N560<<locked>>92%51,503 psi83%3219 fps95.7%
Vihtavuori N565<<locked>>96%48,109 psi77%3127 fps95.1%
Winchester 6.5 StaBALL<<locked>>80%43,105 psi69%2940 fps100%
Winchester 760<<locked>>80%45,005 psi72%3045 fps97.3%
Winchester StaBALL HD48.7 gr80%27,180 psi44%2690 fps96.1%
Winchester Supreme 780<<locked>>88%43,526 psi70%2966 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 71 powders for 6 x 62 R Freres loaded with the .243 | 85gr | Lehigh Defense Controlled Chaos. Winchester StaBALL HD delivers the highest muzzle velocity at 3,340 fps; across all powders the maximum-charge window runs from 2,110 fps to 3,340 fps. ADI AR 2225 gives the best case fill at 100 %, and 71 of the 71 powders fall inside the usable 80–100 % fill window.

Relative to the caliber's maximum pressure (430 MPa), the top charges use 59–90 %, leaving at least 10 % headroom. The 85.0 gr projectile in 0.243" calls for a 1:8.5 twist; slower twists will usually not stabilise this weight. ADI AR 2225, Alliant Reloder-25, Bofors RP30 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, Winchester StaBALL HD, IMR 7828 SSC rank at the top here: for 6 x 62 R Freres with the .243 | 85gr | Lehigh Defense Controlled Chaos 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.

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