Load Specifications
Load data in caliber 6 mm ARC with .243 | 58gr | Barnes Varminator HP FB bullet and 20 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-10x, Norma 200 and ADI AR 2207.
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"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 1680 | <<locked>> | 86% | 44,353 psi | 85% | 3153 fps | 98.2% |
| Accurate 2015ᴾ | <<locked>> | 100% | 42,264 psi | 81% | 3202 fps | 96.8% |
| Accurate LT-30 | <<locked>> | 92% | 45,208 psi | 87% | 3156 fps | 95.8% |
| ADI AR 2207 | <<locked>> | 92% | 46,064 psi | 89% | 3291 fps | 100% |
| Alliant AR-Compᴾ | <<locked>> | 100% | 39,175 psi | 75% | 3222 fps | 98.4% |
| Alliant Reloder-10x | <<locked>> | 98% | 46,238 psi | 89% | 3317 fps | 98.7% |
| Alliant Reloder-7 | <<locked>> | 90% | 45,382 psi | 87% | 3232 fps | 98.8% |
| Baschieri & Pellagri 106 | <<locked>> | 94% | 45,861 psi | 88% | 3179 fps | 96.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 30,400 psi | 58% | 2073 fps | 100% |
| IMR 4198 | <<locked>> | 96% | 45,614 psi | 88% | 3255 fps | 99.1% |
| IMR 4227 | <<locked>> | 86% | 47,050 psi | 90% | 3219 fps | 99.8% |
| Lovex S053 | <<locked>> | 86% | 45,440 psi | 87% | 3173 fps | 100% |
| Norma 200 | <<locked>> | 94% | 46,108 psi | 89% | 3301 fps | 99.1% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 30,095 psi | 58% | 2119 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 86% | 46,195 psi | 89% | 3241 fps | 99.8% |
| SNPE Vectan BA6 1/2 | <<locked>> | 90% | 46,891 psi | 90% | 3035 fps | 100% |
| SNPE Vectan SP 3 | <<locked>> | 96% | 44,512 psi | 86% | 3258 fps | 96.4% |
| Vihtavuori N120 | <<locked>> | 92% | 46,253 psi | 89% | 3245 fps | 100% |
| Vihtavuori N130 | <<locked>> | 98% | 44,367 psi | 85% | 3199 fps | 98.1% |
| Vihtavuori N133ᴾ | <<locked>> | 100% | 41,017 psi | 79% | 3130 fps | 96.2% |
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 1680 | <<locked>> | 80% | 36,405 psi | 70% | 2972 fps | 96.2% |
| Accurate 2015 | <<locked>> | 96% | 37,260 psi | 72% | 3087 fps | 95.3% |
| Accurate LT-30 | <<locked>> | 90% | 42,308 psi | 81% | 3094 fps | 95% |
| ADI AR 2207 | 21.8 gr | 80% | 31,401 psi | 60% | 2949 fps | 98.4% |
| Alliant AR-Comp | <<locked>> | 92% | 30,661 psi | 59% | 2976 fps | 95.3% |
| Alliant Reloder-10x | 24.2 gr | 88% | 33,562 psi | 65% | 3022 fps | 95.4% |
| Alliant Reloder-7 | <<locked>> | 80% | 33,286 psi | 64% | 2943 fps | 95.8% |
| Baschieri & Pellagri 106 | <<locked>> | 92% | 43,149 psi | 83% | 3123 fps | 95.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 22,495 psi | 43% | 1864 fps | 100% |
| IMR 4198 | <<locked>> | 82% | 30,632 psi | 59% | 2874 fps | 95% |
| IMR 4227 | <<locked>> | 80% | 39,131 psi | 75% | 3051 fps | 99% |
| Lovex S053 | <<locked>> | 80% | 37,942 psi | 73% | 3015 fps | 100% |
| Norma 200 | 23.4 gr | 82% | 31,502 psi | 61% | 2946 fps | 95.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 22,017 psi | 42% | 1900 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 80% | 38,232 psi | 74% | 3071 fps | 98.7% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 35,795 psi | 69% | 2828 fps | 100% |
| SNPE Vectan SP 3 | <<locked>> | 94% | 41,611 psi | 80% | 3196 fps | 95.6% |
| Vihtavuori N120 | <<locked>> | 80% | 31,633 psi | 61% | 2920 fps | 99.2% |
| Vihtavuori N130 | <<locked>> | 90% | 34,751 psi | 67% | 2979 fps | 95.5% |
| Vihtavuori N133 | <<locked>> | 98% | 38,450 psi | 74% | 3068 fps | 95.4% |
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 20 powders for 6 mm ARC loaded with the .243 | 58gr | Barnes Varminator HP FB. Alliant Reloder-10x delivers the highest muzzle velocity at 3,317 fps; across all powders the maximum-charge window runs from 2,073 fps to 3,317 fps. Accurate 2015 gives the best case fill at 100 %, and 20 of the 20 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (359 MPa), the top charges use 58–90 %, leaving at least 10 % headroom. Accurate 2015, Alliant AR-Comp, Hodgdon TrailBoss 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-10x, Norma 200, ADI AR 2207 rank at the top here: for 6 mm ARC with the .243 | 58gr | Barnes Varminator HP FB 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.