Load Specifications
Load data in caliber 6 mm GT with .243 | 85gr | Barnes Solid BT bullet and 91 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Power Pro 2000-MR, ReloadSwiss RS 60 and ReloadSwiss RS 52.
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.
A valid access license is required to use the Personalized Load Calculator.
You can find more information in our FAQ: How can I use the Personalized Load Calculator?
Max Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 88% | 55,405 psi | 89% | 3035 fps | 100% |
| Accurate 2460 | <<locked>> | 84% | 54,056 psi | 87% | 3058 fps | 100% |
| Accurate 2495 | <<locked>> | 92% | 53,345 psi | 86% | 3051 fps | 100% |
| Accurate 2520 | <<locked>> | 88% | 54,027 psi | 87% | 3104 fps | 100% |
| Accurate 4064 | <<locked>> | 94% | 53,258 psi | 86% | 3094 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 48,747 psi | 79% | 3084 fps | 97.4% |
| Accurate LT-30 | <<locked>> | 84% | 55,651 psi | 90% | 2963 fps | 100% |
| Accurate LT-32 | <<locked>> | 84% | 56,072 psi | 90% | 2986 fps | 100% |
| ADI AR 2206H | <<locked>> | 90% | 54,578 psi | 88% | 3127 fps | 99.3% |
| ADI AR 2208 | <<locked>> | 96% | 55,811 psi | 90% | 3123 fps | 99% |
| ADI AR 2219 | <<locked>> | 82% | 55,695 psi | 90% | 3104 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 88% | 53,722 psi | 87% | 3077 fps | 99.7% |
| Alliant AR-Comp | <<locked>> | 88% | 53,795 psi | 87% | 3068 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 86% | 55,680 psi | 90% | 3173 fps | 99.4% |
| Alliant Power Pro 2000-MR | <<locked>> | 92% | 54,375 psi | 88% | 3241 fps | 98.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 96% | 55,376 psi | 89% | 3146 fps | 99.8% |
| Alliant Reloder-10x | <<locked>> | 84% | 55,259 psi | 89% | 3045 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 94% | 56,028 psi | 90% | 3166 fps | 99.1% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 48,066 psi | 78% | 3091 fps | 97.5% |
| Alliant Reloder-17 | <<locked>> | 98% | 52,185 psi | 84% | 3199 fps | 99.5% |
| Baschieri & Pellagri 106 | <<locked>> | 82% | 54,070 psi | 87% | 2969 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 90% | 54,534 psi | 88% | 3136 fps | 98.5% |
| Bofors RP3 | <<locked>> | 96% | 55,840 psi | 90% | 3163 fps | 99.8% |
| Hodgdon Benchmark | <<locked>> | 88% | 55,898 psi | 90% | 3068 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 88% | 52,968 psi | 85% | 3107 fps | 99.9% |
| Hodgdon CFE223 | <<locked>> | 86% | 54,708 psi | 88% | 3209 fps | 99% |
| Hodgdon H322 | <<locked>> | 84% | 54,302 psi | 88% | 3084 fps | 100% |
| Hodgdon H335 | <<locked>> | 84% | 55,593 psi | 90% | 3110 fps | 100% |
| Hodgdon H380 | <<locked>> | 94% | 53,577 psi | 86% | 3110 fps | 97.8% |
| Hodgdon H4895 | <<locked>> | 90% | 55,129 psi | 89% | 3140 fps | 99.6% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 44,425 psi | 72% | 2969 fps | 98.1% |
| Hodgdon LEVERevolution | <<locked>> | 92% | 54,085 psi | 87% | 3169 fps | 99.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,824 psi | 56% | 1916 fps | 100% |
| Hodgdon VARGET | <<locked>> | 90% | 53,127 psi | 86% | 3084 fps | 99.4% |
| IMR 3031 | <<locked>> | 90% | 54,389 psi | 88% | 3127 fps | 100% |
| IMR 4064 | <<locked>> | 94% | 55,114 psi | 89% | 3104 fps | 99% |
| IMR 4166 Enduron | <<locked>> | 92% | 55,985 psi | 90% | 3081 fps | 96% |
| IMR 4198 | <<locked>> | 84% | 55,593 psi | 90% | 3009 fps | 100% |
| IMR 4831ᴾ | <<locked>> | 100% | 46,673 psi | 75% | 3025 fps | 97.1% |
| IMR 4895 | <<locked>> | 92% | 53,838 psi | 87% | 3143 fps | 99.2% |
| IMR 8208 XBR | <<locked>> | 88% | 53,722 psi | 87% | 3077 fps | 99.7% |
| Lovex D073.5 | <<locked>> | 84% | 54,230 psi | 87% | 3071 fps | 100% |
| Lovex D073.6 | <<locked>> | 90% | 54,027 psi | 87% | 3104 fps | 100% |
| Lovex S060 | <<locked>> | 90% | 54,882 psi | 89% | 3058 fps | 99.3% |
| Lovex S062 | <<locked>> | 94% | 54,737 psi | 88% | 3104 fps | 99.8% |
| Lovex S065ᴾ | <<locked>> | 100% | 53,940 psi | 87% | 3084 fps | 97% |
| Norma 201 | <<locked>> | 90% | 53,650 psi | 87% | 3074 fps | 99.8% |
| Norma 202 | <<locked>> | 90% | 54,099 psi | 87% | 3084 fps | 100% |
| Norma 203B | <<locked>> | 94% | 55,172 psi | 89% | 3156 fps | 99.4% |
| Norma URPᴾ | <<locked>> | 100% | 48,544 psi | 78% | 3077 fps | 97.3% |
| Ramshot Big Game | <<locked>> | 94% | 55,767 psi | 90% | 3179 fps | 99.3% |
| Ramshot TAC | <<locked>> | 88% | 54,331 psi | 88% | 3087 fps | 97.3% |
| Ramshot Wild Boar | <<locked>> | 88% | 53,708 psi | 87% | 3110 fps | 99.1% |
| Ramshot X-Terminator | <<locked>> | 86% | 55,100 psi | 89% | 3081 fps | 99.2% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,954 psi | 56% | 1955 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 84% | 53,476 psi | 86% | 3064 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 94% | 54,317 psi | 88% | 3091 fps | 96.4% |
| ReloadSwiss RS 52 | <<locked>> | 90% | 52,460 psi | 85% | 3176 fps | 98.7% |
| ReloadSwiss RS 60 | <<locked>> | 98% | 55,724 psi | 90% | 3271 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 48,631 psi | 78% | 3107 fps | 97.2% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 49,676 psi | 80% | 3127 fps | 96.6% |
| Rottweil R 901 | <<locked>> | 88% | 54,389 psi | 88% | 3061 fps | 100% |
| Rottweil R 902 | <<locked>> | 92% | 53,795 psi | 87% | 3068 fps | 99.7% |
| Rottweil R 903 | <<locked>> | 98% | 55,216 psi | 89% | 3143 fps | 99.7% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 53,940 psi | 87% | 3084 fps | 97% |
| Shooters World Match Rifle | <<locked>> | 90% | 54,027 psi | 87% | 3104 fps | 100% |
| Shooters World Precision | <<locked>> | 94% | 54,737 psi | 88% | 3104 fps | 99.8% |
| Shooters World Tactical Rifle | <<locked>> | 82% | 53,359 psi | 86% | 3031 fps | 99.6% |
| SNPE Vectan SP 11 | <<locked>> | 96% | 53,780 psi | 87% | 3156 fps | 99.2% |
| SNPE Vectan SP 3 | <<locked>> | 84% | 53,388 psi | 86% | 3002 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 88% | 52,765 psi | 85% | 3064 fps | 97.5% |
| SNPE Vectan SP 9 | <<locked>> | 90% | 53,301 psi | 86% | 3094 fps | 99.1% |
| SNPE Vectan Tubal 3000 | <<locked>> | 90% | 55,405 psi | 89% | 3018 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 96% | 55,100 psi | 89% | 3012 fps | 100% |
| Somchem S321 | <<locked>> | 86% | 55,187 psi | 89% | 3117 fps | 99.9% |
| Somchem S335 | <<locked>> | 90% | 54,752 psi | 88% | 3018 fps | 100% |
| Somchem S341 | <<locked>> | 90% | 55,695 psi | 90% | 3114 fps | 99.3% |
| Somchem S355 | <<locked>> | 98% | 55,811 psi | 90% | 3143 fps | 99.6% |
| Somchem S365ᴾ | <<locked>> | 100% | 43,236 psi | 70% | 3018 fps | 99.1% |
| Vihtavuori N130 | <<locked>> | 86% | 55,027 psi | 89% | 2989 fps | 100% |
| Vihtavuori N133 | <<locked>> | 90% | 55,376 psi | 89% | 3005 fps | 100% |
| Vihtavuori N135 | <<locked>> | 96% | 56,043 psi | 90% | 3061 fps | 100% |
| Vihtavuori N140 | <<locked>> | 92% | 54,288 psi | 88% | 3054 fps | 100% |
| Vihtavuori N150 | <<locked>> | 98% | 53,882 psi | 87% | 3071 fps | 99.9% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 51,097 psi | 82% | 3081 fps | 97.7% |
| Vihtavuori N530 | <<locked>> | 88% | 54,418 psi | 88% | 3081 fps | 99.8% |
| Vihtavuori N540 | <<locked>> | 92% | 52,663 psi | 85% | 3051 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 50,372 psi | 81% | 3084 fps | 97.4% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 52,344 psi | 84% | 3064 fps | 99.4% |
| Winchester 748 | <<locked>> | 88% | 54,085 psi | 87% | 3133 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 90% | 52,692 psi | 85% | 3097 fps | 99.4% |
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 2015 | <<locked>> | 80% | 43,497 psi | 70% | 2841 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 47,398 psi | 76% | 2946 fps | 99.9% |
| Accurate 2495 | <<locked>> | 80% | 35,795 psi | 58% | 2733 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 40,872 psi | 66% | 2871 fps | 99.3% |
| Accurate 4064 | <<locked>> | 80% | 33,852 psi | 55% | 2710 fps | 98.7% |
| Accurate 4350 | <<locked>> | 94% | 39,639 psi | 64% | 2900 fps | 95% |
| Accurate LT-30 | <<locked>> | 80% | 49,356 psi | 80% | 2864 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 49,719 psi | 80% | 2884 fps | 99.9% |
| ADI AR 2206H | <<locked>> | 80% | 39,798 psi | 64% | 2835 fps | 96.5% |
| ADI AR 2208 | <<locked>> | 84% | 38,406 psi | 62% | 2782 fps | 95.2% |
| ADI AR 2219 | <<locked>> | 80% | 52,083 psi | 84% | 3048 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 80% | 41,814 psi | 67% | 2854 fps | 98.2% |
| Alliant AR-Comp | <<locked>> | 80% | 41,176 psi | 66% | 2864 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 45,701 psi | 74% | 2989 fps | 98% |
| Alliant Power Pro 2000-MR | 35 gr | 84% | 41,133 psi | 66% | 2966 fps | 95.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 33,141 psi | 53% | 2690 fps | 95.2% |
| Alliant Reloder-10x | <<locked>> | 80% | 48,747 psi | 79% | 2946 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 38,159 psi | 62% | 2815 fps | 95.3% |
| Alliant Reloder-16 | <<locked>> | 94% | 39,914 psi | 64% | 2907 fps | 95% |
| Alliant Reloder-17 | <<locked>> | 86% | 34,940 psi | 56% | 2812 fps | 95% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 50,894 psi | 82% | 2920 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 41,466 psi | 67% | 2887 fps | 95.7% |
| Bofors RP3 | <<locked>> | 80% | 32,619 psi | 53% | 2687 fps | 95.2% |
| Hodgdon Benchmark | <<locked>> | 80% | 43,729 psi | 71% | 2851 fps | 99% |
| Hodgdon BL-C2 | <<locked>> | 80% | 40,364 psi | 65% | 2871 fps | 98.4% |
| Hodgdon CFE223 | <<locked>> | 80% | 44,005 psi | 71% | 3009 fps | 97.1% |
| Hodgdon H322 | <<locked>> | 80% | 47,877 psi | 77% | 2979 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 48,834 psi | 79% | 2999 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 43,903 psi | 71% | 2930 fps | 95.6% |
| Hodgdon H4895 | <<locked>> | 80% | 40,132 psi | 65% | 2851 fps | 97.2% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 36,608 psi | 59% | 2795 fps | 95.9% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 36,056 psi | 58% | 2802 fps | 96.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,976 psi | 42% | 1716 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 38,609 psi | 62% | 2795 fps | 96.6% |
| IMR 3031 | <<locked>> | 80% | 39,363 psi | 63% | 2864 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 38,058 psi | 61% | 2769 fps | 95.4% |
| IMR 4166 Enduron | <<locked>> | 90% | 52,533 psi | 85% | 3022 fps | 95.2% |
| IMR 4198 | <<locked>> | 80% | 49,400 psi | 80% | 2913 fps | 100% |
| IMR 4831 | <<locked>> | 96% | 40,698 psi | 66% | 2904 fps | 95.5% |
| IMR 4895 | <<locked>> | 80% | 36,521 psi | 59% | 2789 fps | 95.5% |
| IMR 8208 XBR | <<locked>> | 80% | 41,814 psi | 67% | 2854 fps | 98.2% |
| Lovex D073.5 | <<locked>> | 80% | 47,181 psi | 76% | 2949 fps | 99.6% |
| Lovex D073.6 | <<locked>> | 80% | 38,537 psi | 62% | 2818 fps | 98.9% |
| Lovex S060 | <<locked>> | 80% | 40,524 psi | 65% | 2782 fps | 96.7% |
| Lovex S062 | <<locked>> | 80% | 35,447 psi | 57% | 2720 fps | 96.6% |
| Lovex S065 | <<locked>> | 96% | 47,776 psi | 77% | 2976 fps | 95.7% |
| Norma 201 | <<locked>> | 80% | 38,972 psi | 63% | 2789 fps | 97.6% |
| Norma 202 | <<locked>> | 80% | 39,160 psi | 63% | 2808 fps | 99.4% |
| Norma 203B | <<locked>> | 82% | 37,492 psi | 60% | 2802 fps | 95.8% |
| Norma URP | <<locked>> | 96% | 42,815 psi | 69% | 2963 fps | 95.9% |
| Ramshot Big Game | <<locked>> | 82% | 37,028 psi | 60% | 2808 fps | 95.3% |
| Ramshot TAC | <<locked>> | 82% | 44,701 psi | 72% | 2907 fps | 95.1% |
| Ramshot Wild Boar | <<locked>> | 80% | 41,191 psi | 66% | 2871 fps | 96.8% |
| Ramshot X-Terminator | <<locked>> | 80% | 45,310 psi | 73% | 2904 fps | 97.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,194 psi | 42% | 1759 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 46,905 psi | 76% | 2953 fps | 99.7% |
| ReloadSwiss RS 50 | <<locked>> | 92% | 50,894 psi | 82% | 3031 fps | 95.6% |
| ReloadSwiss RS 52 | 33.1 gr | 82% | 39,421 psi | 64% | 2913 fps | 95.7% |
| ReloadSwiss RS 60 | 32.8 gr | 80% | 30,429 psi | 49% | 2687 fps | 95.5% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 42,482 psi | 69% | 2982 fps | 95.5% |
| ReloadSwiss RS 70 | <<locked>> | 98% | 46,470 psi | 75% | 3061 fps | 95.7% |
| Rottweil R 901 | <<locked>> | 80% | 42,685 psi | 69% | 2851 fps | 99.6% |
| Rottweil R 902 | <<locked>> | 80% | 37,217 psi | 60% | 2740 fps | 97.1% |
| Rottweil R 903 | <<locked>> | 84% | 34,824 psi | 56% | 2740 fps | 95.7% |
| Shooters World Long Rifle | <<locked>> | 96% | 47,776 psi | 77% | 2976 fps | 95.7% |
| Shooters World Match Rifle | <<locked>> | 80% | 38,537 psi | 62% | 2818 fps | 98.9% |
| Shooters World Precision | <<locked>> | 80% | 35,447 psi | 57% | 2720 fps | 96.6% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 49,937 psi | 81% | 2976 fps | 99.2% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 36,332 psi | 59% | 2799 fps | 95.1% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 47,050 psi | 76% | 2897 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 42,612 psi | 69% | 2871 fps | 95.1% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 38,290 psi | 62% | 2795 fps | 96% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 40,596 psi | 65% | 2762 fps | 99.5% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 33,446 psi | 54% | 2608 fps | 99% |
| Somchem S321 | <<locked>> | 80% | 45,107 psi | 73% | 2940 fps | 99% |
| Somchem S335 | <<locked>> | 80% | 40,045 psi | 65% | 2762 fps | 99.8% |
| Somchem S341 | <<locked>> | 80% | 39,581 psi | 64% | 2815 fps | 96.3% |
| Somchem S355 | <<locked>> | 82% | 33,721 psi | 54% | 2694 fps | 95% |
| Somchem S365 | <<locked>> | 90% | 31,299 psi | 50% | 2717 fps | 95.3% |
| Vihtavuori N130 | <<locked>> | 80% | 45,977 psi | 74% | 2844 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 40,756 psi | 66% | 2762 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 33,852 psi | 55% | 2664 fps | 99.7% |
| Vihtavuori N140 | <<locked>> | 80% | 37,130 psi | 60% | 2740 fps | 99.3% |
| Vihtavuori N150 | <<locked>> | 80% | 30,052 psi | 48% | 2575 fps | 95.1% |
| Vihtavuori N160 | <<locked>> | 94% | 42,076 psi | 68% | 2907 fps | 95.5% |
| Vihtavuori N530 | <<locked>> | 80% | 42,003 psi | 68% | 2854 fps | 98.3% |
| Vihtavuori N540 | <<locked>> | 80% | 35,708 psi | 58% | 2720 fps | 98.7% |
| Vihtavuori N550 | <<locked>> | 94% | 41,292 psi | 67% | 2907 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 35,186 psi | 57% | 2713 fps | 95.4% |
| Winchester 748 | <<locked>> | 80% | 41,031 psi | 66% | 2894 fps | 98.8% |
| Winchester StaBALL Match | <<locked>> | 80% | 37,608 psi | 61% | 2799 fps | 96.5% |
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 108 powders for 6 mm GT loaded with the .243 | 85gr | Barnes Solid BT. ReloadSwiss RS 60 delivers the highest muzzle velocity at 3,271 fps; across all powders the maximum-charge window runs from 1,916 fps to 3,271 fps. Accurate 4350 gives the best case fill at 100 %, and 108 of the 108 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (427 MPa), the top charges use 55–90 %, leaving at least 10 % headroom. The 85.0 gr projectile in 0.243" calls for a 1:9.0 twist; slower twists will usually not stabilise this weight. Accurate 4350, Alliant Reloder-16, Alliant Reloder-23 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 Power Pro 2000-MR, ReloadSwiss RS 60, ReloadSwiss RS 52 rank at the top here: for 6 mm GT with the .243 | 85gr | Barnes Solid BT they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate 2700, Alliant Reloder-23, Alliant Reloder-26 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.