Load data for 6 mm Rem. + .243 | 85gr | Barnes X BT

6 mm Rem. cartridge drawing
Barnes logo

Load Specifications

Bullet Manufacturer:Barnes
Bullet Weight:85 gr
Bullet Diameter:0.243"
Bullet Length:<<locked>>
Case Length (l3):2.223"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:54.4 Grains of Water
Primer Size:Large Rifle (LR)
Barrel Length:24"
Max. allowed Pressure:62,366 psi
Recommended Twist Rate:1:9.5

Load data in caliber 6 mm Rem. with .243 | 85gr | Barnes X BT bullet and 89 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 70, ReloadSwiss RS 60 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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Max Load - Barrel Length: 24"

PowderChargeFRMaxP%V(0)z
Accurate 2015<<locked>>82%55,738 psi89%3077 fps100%
Accurate 2495<<locked>>86%56,144 psi90%3114 fps100%
Accurate 2520<<locked>>82%56,188 psi90%3166 fps100%
Accurate 3100ᴾ<<locked>>100%45,818 psi73%3028 fps95.9%
Accurate 4064<<locked>>88%55,593 psi89%3159 fps100%
Accurate 4350<<locked>>96%54,868 psi88%3228 fps99.1%
ADI AR 2206H<<locked>>84%54,505 psi87%3173 fps99.7%
ADI AR 2208<<locked>>90%55,187 psi88%3166 fps99.4%
ADI Benchmark 8208<<locked>>82%53,316 psi85%3120 fps99.9%
Alliant AR-Comp<<locked>>82%54,346 psi87%3104 fps100%
Alliant Power Pro 2000-MR<<locked>>86%53,650 psi86%3284 fps99.3%
Alliant Reloder- TS 15.5<<locked>>90%55,622 psi89%3196 fps100%
Alliant Reloder-15<<locked>>88%56,275 psi90%3219 fps99.6%
Alliant Reloder-16<<locked>>98%55,259 psi89%3284 fps99.4%
Alliant Reloder-17<<locked>>92%52,794 psi85%3258 fps99.9%
Alliant Reloder-23ᴾ<<locked>>100%42,975 psi69%3051 fps98.7%
Alliant Reloder-26ᴾ<<locked>>100%48,414 psi78%3232 fps98%
Baschieri & Pellagri 107<<locked>>84%54,099 psi87%3176 fps99.1%
Bofors RP3<<locked>>88%53,301 psi85%3159 fps99.9%
Bofors RP7<<locked>>94%56,362 psi90%3173 fps96.5%
Hodgdon Benchmark<<locked>>82%54,665 psi88%3097 fps100%
Hodgdon BL-C2<<locked>>82%52,997 psi85%3150 fps100%
Hodgdon H380<<locked>>88%54,128 psi87%3169 fps98.6%
Hodgdon H414<<locked>>94%53,316 psi85%3209 fps96.7%
Hodgdon H4895<<locked>>84%55,071 psi88%3186 fps99.9%
Hodgdon Hybrid 100Vᴾ<<locked>>100%54,955 psi88%3202 fps99.9%
Hodgdon LEVERevolution<<locked>>86%54,302 psi87%3212 fps100%
Hodgdon Superformance<<locked>>94%53,737 psi86%3238 fps96.2%
Hodgdon TrailBossᴾ<<locked>>100%36,013 psi58%1998 fps100%
Hodgdon VARGET<<locked>>86%55,970 psi90%3182 fps99.9%
IMR 3031<<locked>>84%55,027 psi88%3173 fps100%
IMR 4064<<locked>>88%54,752 psi88%3150 fps99.5%
IMR 4166 Enduron<<locked>>86%54,636 psi88%3120 fps96.8%
IMR 4350<<locked>>96%53,214 psi85%3140 fps95.9%
IMR 4451 Enduron<<locked>>92%54,462 psi87%3146 fps96.7%
IMR 4831<<locked>>98%55,027 psi88%3215 fps99.2%
IMR 4895<<locked>>86%54,244 psi87%3196 fps99.7%
IMR 8208 XBR<<locked>>82%53,316 psi85%3120 fps99.9%
Lovex D073.6<<locked>>84%54,650 psi88%3150 fps100%
Lovex S060<<locked>>84%53,780 psi86%3091 fps99.6%
Lovex S062<<locked>>88%55,172 psi88%3156 fps100%
Lovex S065<<locked>>94%54,679 psi88%3150 fps98.1%
Lovex S070<<locked>>96%55,463 psi89%3182 fps97.2%
Norma 201<<locked>>84%53,911 psi86%3123 fps100%
Norma 202<<locked>>84%54,012 psi87%3123 fps100%
Norma 203B<<locked>>88%55,463 psi89%3205 fps99.8%
Norma URP<<locked>>96%53,258 psi85%3205 fps98.9%
Ramshot Big Game<<locked>>88%55,883 psi90%3228 fps99.7%
Ramshot Hunter<<locked>>98%55,709 psi89%3258 fps98%
Ramshot TAC<<locked>>82%53,490 psi86%3127 fps98%
Ramshot Wild Boar<<locked>>82%53,098 psi85%3150 fps99.5%
ReloadSwiss RS 14ᴾ<<locked>>100%36,622 psi59%2047 fps100%
ReloadSwiss RS 50<<locked>>88%54,012 psi87%3140 fps97.3%
ReloadSwiss RS 52<<locked>>84%52,924 psi85%3225 fps99.2%
ReloadSwiss RS 60<<locked>>92%56,043 psi90%3323 fps100%
ReloadSwiss RS 62<<locked>>96%54,244 psi87%3245 fps98.9%
ReloadSwiss RS 70<<locked>>96%53,200 psi85%3261 fps98.5%
Rottweil R 901<<locked>>82%54,984 psi88%3110 fps100%
Rottweil R 902<<locked>>86%54,317 psi87%3120 fps100%
Rottweil R 903<<locked>>90%53,548 psi86%3156 fps99.8%
Rottweil R 907<<locked>>94%56,362 psi90%3173 fps96.5%
Shooters World Long Rifle<<locked>>94%54,679 psi88%3150 fps98.1%
Shooters World Match Rifle<<locked>>84%54,650 psi88%3150 fps100%
Shooters World Precision<<locked>>88%55,172 psi88%3156 fps100%
Shooters World SW4350<<locked>>96%55,463 psi89%3182 fps97.2%
SNPE Vectan SP 11<<locked>>90%54,244 psi87%3205 fps99.6%
SNPE Vectan SP 7<<locked>>84%56,028 psi90%3169 fps98.8%
SNPE Vectan SP 9<<locked>>86%56,318 psi90%3196 fps99.8%
SNPE Vectan Tubal 3000<<locked>>84%54,404 psi87%3051 fps100%
SNPE Vectan Tubal 5000<<locked>>90%54,810 psi88%3051 fps100%
SNPE Vectan Tubal 7000<<locked>>94%54,679 psi88%3091 fps96.8%
Somchem S335<<locked>>84%54,447 psi87%3054 fps100%
Somchem S341<<locked>>84%55,201 psi89%3156 fps99.7%
Somchem S355<<locked>>90%53,388 psi86%3146 fps99.8%
Somchem S365ᴾ<<locked>>100%55,143 psi88%3274 fps100%
Vihtavuori N133<<locked>>84%54,534 psi87%3038 fps100%
Vihtavuori N135<<locked>>86%53,954 psi87%3087 fps100%
Vihtavuori N140<<locked>>86%54,404 psi87%3097 fps100%
Vihtavuori N150<<locked>>92%54,810 psi88%3127 fps100%
Vihtavuori N160<<locked>>96%55,608 psi89%3202 fps99.1%
Vihtavuori N530<<locked>>82%53,708 psi86%3117 fps100%
Vihtavuori N540<<locked>>88%56,202 psi90%3143 fps100%
Vihtavuori N550<<locked>>96%54,781 psi88%3205 fps98.9%
Vihtavuori N555ᴾ<<locked>>100%47,529 psi76%3143 fps98.6%
Winchester 6.5 StaBALL<<locked>>96%55,738 psi89%3176 fps100%
Winchester 748<<locked>>82%53,621 psi86%3166 fps100%
Winchester 760<<locked>>94%53,737 psi86%3219 fps96.8%
Winchester StaBALL HDᴾ<<locked>>100%39,175 psi63%3064 fps98.7%
Winchester StaBALL Match<<locked>>86%56,217 psi90%3202 fps99.9%

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

Start Load - Barrel Length: 24"

PowderChargeFRMaxP%V(0)z
Accurate 2015<<locked>>80%52,388 psi84%3025 fps100%
Accurate 2495<<locked>>80%46,543 psi75%2959 fps100%
Accurate 2520<<locked>>80%52,837 psi85%3114 fps100%
Accurate 3100<<locked>>98%42,975 psi69%2969 fps95%
Accurate 4064<<locked>>80%43,961 psi70%2953 fps100%
Accurate 4350<<locked>>84%37,202 psi60%2867 fps95.1%
ADI AR 2206H<<locked>>80%48,298 psi77%3054 fps99%
ADI AR 2208<<locked>>80%41,075 psi66%2884 fps97%
ADI Benchmark 8208<<locked>>80%50,169 psi80%3061 fps99.8%
Alliant AR-Comp<<locked>>80%50,952 psi82%3051 fps100%
Alliant Power Pro 2000-MR<<locked>>80%43,947 psi70%3084 fps97.6%
Alliant Reloder- TS 15.5<<locked>>80%41,307 psi66%2920 fps98.5%
Alliant Reloder-15<<locked>>80%44,164 psi71%2986 fps97.9%
Alliant Reloder-16<<locked>>86%38,638 psi62%2927 fps95.7%
Alliant Reloder-1737.9 gr80%36,085 psi58%2884 fps96.7%
Alliant Reloder-23<<locked>>92%34,127 psi55%2825 fps95.7%
Alliant Reloder-26<<locked>>94%39,682 psi64%3028 fps95.3%
Baschieri & Pellagri 107<<locked>>80%47,384 psi76%3051 fps98.1%
Bofors RP3<<locked>>80%41,655 psi67%2933 fps98.6%
Bofors RP7<<locked>>90%49,893 psi80%3054 fps95.1%
Hodgdon Benchmark<<locked>>80%51,517 psi83%3045 fps100%
Hodgdon BL-C2<<locked>>80%49,559 psi79%3087 fps99.9%
Hodgdon H380<<locked>>80%42,090 psi67%2927 fps96.1%
Hodgdon H414<<locked>>90%47,166 psi76%3091 fps95.1%
Hodgdon H4895<<locked>>80%48,805 psi78%3071 fps99.4%
Hodgdon Hybrid 100V<<locked>>82%31,923 psi51%2703 fps95%
Hodgdon LEVERevolution<<locked>>80%44,817 psi72%3038 fps99.2%
Hodgdon Superformance<<locked>>92%50,154 psi80%3169 fps95.3%
Hodgdon TrailBoss<<locked>>80%27,108 psi43%1791 fps100%
Hodgdon VARGET<<locked>>80%46,630 psi75%3015 fps99.1%
IMR 3031<<locked>>80%48,718 psi78%3071 fps100%
IMR 4064<<locked>>80%43,076 psi69%2923 fps97.7%
IMR 4166 Enduron<<locked>>82%48,515 psi78%3005 fps95.4%
IMR 4350<<locked>>94%50,154 psi80%3081 fps95.2%
IMR 4451 Enduron<<locked>>88%48,385 psi78%3031 fps95.2%
IMR 4831<<locked>>86%37,869 psi61%2867 fps95.5%
IMR 4895<<locked>>80%45,179 psi72%3022 fps98.6%
IMR 8208 XBR<<locked>>80%50,169 psi80%3061 fps99.8%
Lovex D073.6<<locked>>80%48,254 psi77%3041 fps100%
Lovex S060<<locked>>80%47,718 psi77%2979 fps99%
Lovex S062<<locked>>80%43,598 psi70%2936 fps99.2%
Lovex S065<<locked>>86%43,381 psi70%2927 fps95.5%
Lovex S070<<locked>>90%46,601 psi75%3015 fps95.1%
Norma 201<<locked>>80%47,761 psi77%3012 fps99.6%
Norma 202<<locked>>80%47,761 psi77%3015 fps100%
Norma 203B<<locked>>80%43,569 psi70%2976 fps98.2%
Norma URP<<locked>>86%39,204 psi63%2917 fps95.7%
Ramshot Big Game<<locked>>80%42,873 psi69%2982 fps97.9%
Ramshot Hunter<<locked>>92%46,122 psi74%3074 fps95.8%
Ramshot TAC<<locked>>80%50,140 psi80%3064 fps97.4%
Ramshot Wild Boar<<locked>>80%49,995 psi80%3094 fps99.2%
ReloadSwiss RS 14<<locked>>80%27,441 psi44%1834 fps100%
ReloadSwiss RS 50<<locked>>82%44,860 psi72%2963 fps95.1%
ReloadSwiss RS 52<<locked>>80%46,572 psi75%3104 fps98.3%
ReloadSwiss RS 6037.9 gr80%38,174 psi61%2956 fps99.4%
ReloadSwiss RS 62<<locked>>86%39,073 psi63%2936 fps95.4%
ReloadSwiss RS 7042.3 gr88%41,147 psi66%2999 fps95.2%
Rottweil R 901<<locked>>80%52,141 psi84%3061 fps100%
Rottweil R 902<<locked>>80%45,614 psi73%2959 fps99.4%
Rottweil R 903<<locked>>80%39,247 psi63%2871 fps97.9%
Rottweil R 907<<locked>>90%49,893 psi80%3054 fps95.1%
Shooters World Long Rifle<<locked>>86%43,381 psi70%2927 fps95.5%
Shooters World Match Rifle<<locked>>80%48,254 psi77%3041 fps100%
Shooters World Precision<<locked>>80%43,598 psi70%2936 fps99.2%
Shooters World SW4350<<locked>>90%46,601 psi75%3015 fps95.1%
SNPE Vectan SP 11<<locked>>80%39,653 psi64%2913 fps97.2%
SNPE Vectan SP 7<<locked>>80%48,936 psi78%3041 fps97.6%
SNPE Vectan SP 9<<locked>>80%46,804 psi75%3022 fps98.8%
SNPE Vectan Tubal 3000<<locked>>80%48,356 psi78%2953 fps100%
SNPE Vectan Tubal 5000<<locked>>80%40,654 psi65%2805 fps100%
SNPE Vectan Tubal 7000<<locked>>90%48,385 psi78%2976 fps95.4%
Somchem S335<<locked>>80%48,341 psi78%2953 fps100%
Somchem S341<<locked>>80%48,225 psi77%3031 fps98.9%
Somchem S355<<locked>>80%39,740 psi64%2874 fps97.8%
Somchem S365<<locked>>80%29,559 psi47%2690 fps95.5%
Vihtavuori N133<<locked>>80%48,573 psi78%2940 fps100%
Vihtavuori N135<<locked>>80%44,933 psi72%2936 fps100%
Vihtavuori N140<<locked>>80%45,310 psi73%2943 fps100%
Vihtavuori N150<<locked>>80%37,811 psi61%2802 fps98.5%
Vihtavuori N160<<locked>>84%38,247 psi61%2858 fps95.3%
Vihtavuori N530<<locked>>80%50,488 psi81%3061 fps99.8%
Vihtavuori N540<<locked>>80%43,947 psi70%2933 fps100%
Vihtavuori N550<<locked>>86%40,248 psi65%2917 fps95.7%
Vihtavuori N555<<locked>>90%34,954 psi56%2854 fps95%
Winchester 6.5 StaBALL<<locked>>80%33,446 psi54%2707 fps95.9%
Winchester 748<<locked>>80%50,401 psi81%3110 fps100%
Winchester 760<<locked>>90%47,166 psi76%3091 fps95.1%
Winchester StaBALL HD<<locked>>94%32,634 psi52%2854 fps95.5%
Winchester StaBALL Match<<locked>>80%46,557 psi75%3028 fps99.2%

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 89 powders for 6 mm Rem. loaded with the .243 | 85gr | Barnes X BT. ReloadSwiss RS 60 delivers the highest muzzle velocity at 3,323 fps; across all powders the maximum-charge window runs from 1,998 fps to 3,323 fps. Accurate 3100 gives the best case fill at 100 %, and 89 of the 89 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 85.0 gr projectile in 0.243" calls for a 1:9.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, Alliant Reloder-23, Alliant Reloder-26 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, ReloadSwiss RS 60, Alliant Reloder-17 rank at the top here: for 6 mm Rem. with the .243 | 85gr | Barnes X BT 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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