Load Specifications
Load data in caliber 6 mm GT with .243 | 80gr | Barnes TTSX BT bullet and 87 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 52 and Hodgdon LEVERevolution.
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>> | 92% | 53,476 psi | 86% | 3064 fps | 100% |
| Accurate 2200 | <<locked>> | 84% | 54,244 psi | 87% | 3156 fps | 97.4% |
| Accurate 2230 | <<locked>> | 84% | 55,477 psi | 89% | 3173 fps | 98% |
| Accurate 2460 | <<locked>> | 90% | 55,666 psi | 90% | 3133 fps | 100% |
| Accurate 2495 | <<locked>> | 98% | 53,026 psi | 86% | 3110 fps | 100% |
| Accurate 2520 | <<locked>> | 92% | 53,330 psi | 86% | 3136 fps | 99.8% |
| Accurate 4064ᴾ | <<locked>> | 100% | 52,649 psi | 85% | 3146 fps | 100% |
| Accurate LT-30 | <<locked>> | 86% | 54,839 psi | 88% | 3025 fps | 100% |
| Accurate LT-32 | <<locked>> | 86% | 55,274 psi | 89% | 3045 fps | 99.9% |
| ADI AR 2206H | <<locked>> | 94% | 52,997 psi | 85% | 3140 fps | 98.1% |
| ADI AR 2207 | <<locked>> | 84% | 55,448 psi | 89% | 3048 fps | 100% |
| ADI AR 2208ᴾ | <<locked>> | 100% | 54,099 psi | 87% | 3130 fps | 97.6% |
| ADI AR 2219 | <<locked>> | 86% | 54,650 psi | 88% | 3143 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 94% | 56,043 psi | 90% | 3156 fps | 99.3% |
| Alliant AR-Comp | <<locked>> | 94% | 54,853 psi | 88% | 3150 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 88% | 53,287 psi | 86% | 3209 fps | 98.6% |
| Alliant Power Pro 2000-MR | <<locked>> | 96% | 52,431 psi | 85% | 3232 fps | 97% |
| Alliant Reloder- TS 15.5ᴾ | <<locked>> | 100% | 52,388 psi | 84% | 3143 fps | 98.7% |
| Alliant Reloder-10x | <<locked>> | 88% | 53,476 psi | 86% | 3081 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 98% | 53,650 psi | 87% | 3169 fps | 97.7% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 46,905 psi | 76% | 3127 fps | 97.3% |
| Alliant Reloder-7 | <<locked>> | 82% | 53,200 psi | 86% | 3015 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 86% | 53,592 psi | 86% | 3009 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 94% | 52,591 psi | 85% | 3143 fps | 96.9% |
| Bofors RP3ᴾ | <<locked>> | 100% | 52,663 psi | 85% | 3159 fps | 98.8% |
| Hodgdon Benchmark | <<locked>> | 92% | 54,679 psi | 88% | 3091 fps | 99.5% |
| Hodgdon BL-C2 | <<locked>> | 94% | 54,650 psi | 88% | 3186 fps | 99.5% |
| Hodgdon CFE223 | <<locked>> | 90% | 52,359 psi | 84% | 3212 fps | 97.5% |
| Hodgdon H322 | <<locked>> | 88% | 53,142 psi | 86% | 3120 fps | 100% |
| Hodgdon H335 | <<locked>> | 88% | 54,505 psi | 88% | 3146 fps | 100% |
| Hodgdon H380ᴾ | <<locked>> | 100% | 54,926 psi | 89% | 3169 fps | 96.6% |
| Hodgdon H4198 | <<locked>> | 82% | 53,272 psi | 86% | 3022 fps | 100% |
| Hodgdon H4895 | <<locked>> | 94% | 53,417 psi | 86% | 3153 fps | 98.6% |
| Hodgdon LEVERevolution | <<locked>> | 98% | 55,042 psi | 89% | 3232 fps | 99.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 33,562 psi | 54% | 1909 fps | 100% |
| Hodgdon VARGET | <<locked>> | 96% | 55,274 psi | 89% | 3163 fps | 98.8% |
| IMR 3031 | <<locked>> | 96% | 55,245 psi | 89% | 3202 fps | 100% |
| IMR 4064 | <<locked>> | 98% | 53,476 psi | 86% | 3114 fps | 97.7% |
| IMR 4198 | <<locked>> | 88% | 54,665 psi | 88% | 3051 fps | 100% |
| IMR 4895 | <<locked>> | 98% | 54,926 psi | 89% | 3209 fps | 98.5% |
| IMR 8208 XBR | <<locked>> | 94% | 56,043 psi | 90% | 3156 fps | 99.3% |
| Lovex D073.4 | <<locked>> | 84% | 55,709 psi | 90% | 3150 fps | 99.9% |
| Lovex D073.5 | <<locked>> | 88% | 52,098 psi | 84% | 3084 fps | 99.4% |
| Lovex D073.6 | <<locked>> | 96% | 54,839 psi | 88% | 3169 fps | 99.9% |
| Lovex S060 | <<locked>> | 94% | 53,432 psi | 86% | 3068 fps | 98.1% |
| Lovex S062ᴾ | <<locked>> | 100% | 55,477 psi | 89% | 3159 fps | 99.3% |
| Norma 200 | <<locked>> | 84% | 53,243 psi | 86% | 3051 fps | 100% |
| Norma 201 | <<locked>> | 96% | 54,607 psi | 88% | 3136 fps | 99.2% |
| Norma 202 | <<locked>> | 96% | 55,056 psi | 89% | 3153 fps | 100% |
| Norma 203B | <<locked>> | 98% | 52,663 psi | 85% | 3156 fps | 98.1% |
| Ramshot Big Game | <<locked>> | 98% | 53,461 psi | 86% | 3182 fps | 98% |
| Ramshot Wild Boar | <<locked>> | 94% | 55,854 psi | 90% | 3186 fps | 98.4% |
| Ramshot X-Terminator | <<locked>> | 90% | 54,128 psi | 87% | 3100 fps | 98% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 33,910 psi | 55% | 1959 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 90% | 55,999 psi | 90% | 3153 fps | 99.9% |
| ReloadSwiss RS 52 | <<locked>> | 96% | 53,171 psi | 86% | 3235 fps | 97.6% |
| ReloadSwiss RS 60ᴾ | <<locked>> | 100% | 50,227 psi | 81% | 3212 fps | 99.7% |
| Rottweil R 901 | <<locked>> | 94% | 55,550 psi | 90% | 3133 fps | 100% |
| Rottweil R 902 | <<locked>> | 98% | 54,824 psi | 88% | 3127 fps | 99.2% |
| Rottweil R 903ᴾ | <<locked>> | 100% | 48,617 psi | 78% | 3077 fps | 98% |
| Shooters World AR Plus | <<locked>> | 84% | 55,709 psi | 90% | 3150 fps | 99.9% |
| Shooters World Match Rifle | <<locked>> | 96% | 54,839 psi | 88% | 3169 fps | 99.9% |
| Shooters World Precisionᴾ | <<locked>> | 100% | 55,477 psi | 89% | 3159 fps | 99.3% |
| Shooters World Tactical Rifle | <<locked>> | 86% | 52,417 psi | 85% | 3054 fps | 98.6% |
| SNPE Vectan BA6 1/2 | <<locked>> | 84% | 55,129 psi | 89% | 2776 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 86% | 55,013 psi | 89% | 3150 fps | 100% |
| SNPE Vectan SP 11ᴾ | <<locked>> | 100% | 51,372 psi | 83% | 3153 fps | 97.7% |
| SNPE Vectan SP 3 | <<locked>> | 88% | 54,766 psi | 88% | 3104 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 94% | 54,476 psi | 88% | 3127 fps | 96.3% |
| SNPE Vectan SP 9 | <<locked>> | 96% | 54,868 psi | 88% | 3163 fps | 98.3% |
| SNPE Vectan Tubal 3000 | <<locked>> | 94% | 53,983 psi | 87% | 3041 fps | 100% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 53,650 psi | 87% | 3038 fps | 100% |
| Somchem S321 | <<locked>> | 90% | 53,722 psi | 87% | 3140 fps | 99.3% |
| Somchem S335 | <<locked>> | 96% | 56,086 psi | 90% | 3091 fps | 100% |
| Somchem S341 | <<locked>> | 94% | 53,853 psi | 87% | 3123 fps | 98.1% |
| Somchem S355ᴾ | <<locked>> | 100% | 49,647 psi | 80% | 3084 fps | 97.9% |
| Vihtavuori N120 | <<locked>> | 84% | 55,376 psi | 89% | 2992 fps | 100% |
| Vihtavuori N130 | <<locked>> | 90% | 53,969 psi | 87% | 3028 fps | 100% |
| Vihtavuori N133 | <<locked>> | 94% | 53,679 psi | 87% | 3035 fps | 100% |
| Vihtavuori N135 | <<locked>> | 98% | 53,635 psi | 87% | 3114 fps | 100% |
| Vihtavuori N140 | <<locked>> | 98% | 55,738 psi | 90% | 3127 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 48,051 psi | 78% | 3018 fps | 98.7% |
| Vihtavuori N530 | <<locked>> | 92% | 52,968 psi | 85% | 3100 fps | 99% |
| Vihtavuori N540 | <<locked>> | 98% | 54,273 psi | 88% | 3127 fps | 100% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 44,164 psi | 71% | 2940 fps | 96.6% |
| Winchester 748 | <<locked>> | 94% | 55,245 psi | 89% | 3202 fps | 99.7% |
| Winchester StaBALL Match | <<locked>> | 96% | 54,215 psi | 87% | 3166 fps | 98.7% |
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% | 36,347 psi | 59% | 2749 fps | 99.6% |
| Accurate 2200 | <<locked>> | 80% | 47,587 psi | 77% | 3031 fps | 96% |
| Accurate 2230 | <<locked>> | 80% | 47,659 psi | 77% | 3031 fps | 96.5% |
| Accurate 2460 | <<locked>> | 80% | 39,479 psi | 64% | 2841 fps | 98.4% |
| Accurate 2495 | <<locked>> | 80% | 28,369 psi | 46% | 2605 fps | 98.2% |
| Accurate 2520 | <<locked>> | 80% | 34,780 psi | 56% | 2772 fps | 96.8% |
| Accurate 4064 | <<locked>> | 82% | 28,805 psi | 46% | 2631 fps | 95.8% |
| Accurate LT-30 | <<locked>> | 80% | 45,353 psi | 73% | 2864 fps | 99.9% |
| Accurate LT-32 | <<locked>> | 80% | 45,716 psi | 74% | 2881 fps | 99.1% |
| ADI AR 2206H | <<locked>> | 86% | 40,770 psi | 66% | 2897 fps | 95.2% |
| ADI AR 2207 | <<locked>> | 80% | 49,095 psi | 79% | 2953 fps | 100% |
| ADI AR 2208 | <<locked>> | 94% | 44,759 psi | 72% | 2959 fps | 95.5% |
| ADI AR 2219 | <<locked>> | 80% | 44,425 psi | 72% | 2969 fps | 99.8% |
| ADI Benchmark 8208 | <<locked>> | 80% | 35,650 psi | 57% | 2753 fps | 95% |
| Alliant AR-Comp | <<locked>> | 80% | 33,634 psi | 54% | 2772 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 40,814 psi | 66% | 2959 fps | 96% |
| Alliant Power Pro 2000-MR | 35 gr | 92% | 45,745 psi | 74% | 3097 fps | 95.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 37,797 psi | 61% | 2854 fps | 95.4% |
| Alliant Reloder-10x | <<locked>> | 80% | 41,524 psi | 67% | 2874 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 92% | 43,859 psi | 71% | 2986 fps | 95.5% |
| Alliant Reloder-17 | <<locked>> | 96% | 40,915 psi | 66% | 2992 fps | 95.4% |
| Alliant Reloder-7 | <<locked>> | 80% | 49,937 psi | 81% | 2966 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 44,048 psi | 71% | 2851 fps | 99.9% |
| Baschieri & Pellagri 107 | <<locked>> | 90% | 45,992 psi | 74% | 3018 fps | 95.4% |
| Bofors RP3 | <<locked>> | 90% | 37,159 psi | 60% | 2854 fps | 95.4% |
| Hodgdon Benchmark | <<locked>> | 80% | 37,710 psi | 61% | 2759 fps | 96.4% |
| Hodgdon BL-C2 | <<locked>> | 82% | 35,708 psi | 58% | 2808 fps | 95.8% |
| Hodgdon CFE223 | <<locked>> | 86% | 45,643 psi | 74% | 3081 fps | 95.9% |
| Hodgdon H322 | <<locked>> | 80% | 40,335 psi | 65% | 2887 fps | 99.4% |
| Hodgdon H335 | <<locked>> | 80% | 41,017 psi | 66% | 2900 fps | 98.9% |
| Hodgdon H380 | <<locked>> | 98% | 51,372 psi | 83% | 3110 fps | 95.9% |
| Hodgdon H4198 | <<locked>> | 80% | 49,966 psi | 81% | 2969 fps | 99.9% |
| Hodgdon H4895 | <<locked>> | 84% | 38,493 psi | 62% | 2854 fps | 95.2% |
| Hodgdon LEVERevolution | 32.1 gr | 86% | 36,883 psi | 59% | 2864 fps | 95% |
| Hodgdon TrailBoss | <<locked>> | 80% | 24,758 psi | 40% | 1709 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 39,784 psi | 64% | 2864 fps | 95.5% |
| IMR 3031 | <<locked>> | 80% | 32,184 psi | 52% | 2753 fps | 98.4% |
| IMR 4064 | <<locked>> | 92% | 44,077 psi | 71% | 2940 fps | 95.6% |
| IMR 4198 | <<locked>> | 80% | 42,801 psi | 69% | 2858 fps | 100% |
| IMR 4895 | <<locked>> | 90% | 42,090 psi | 68% | 2966 fps | 95.8% |
| IMR 8208 XBR | <<locked>> | 80% | 35,650 psi | 57% | 2753 fps | 95% |
| Lovex D073.4 | <<locked>> | 80% | 48,341 psi | 78% | 3028 fps | 99.3% |
| Lovex D073.5 | <<locked>> | 80% | 39,073 psi | 63% | 2835 fps | 97.2% |
| Lovex D073.6 | <<locked>> | 80% | 31,154 psi | 50% | 2687 fps | 95.4% |
| Lovex S060 | <<locked>> | 86% | 42,061 psi | 68% | 2851 fps | 95.6% |
| Lovex S062 | <<locked>> | 86% | 35,708 psi | 58% | 2769 fps | 95.2% |
| Norma 200 | <<locked>> | 80% | 46,789 psi | 75% | 2946 fps | 100% |
| Norma 201 | <<locked>> | 84% | 37,130 psi | 60% | 2792 fps | 95.7% |
| Norma 202 | <<locked>> | 80% | 32,677 psi | 53% | 2700 fps | 96.8% |
| Norma 203B | <<locked>> | 90% | 40,350 psi | 65% | 2913 fps | 95.1% |
| Ramshot Big Game | <<locked>> | 92% | 43,410 psi | 70% | 2992 fps | 95.7% |
| Ramshot Wild Boar | <<locked>> | 86% | 42,279 psi | 68% | 2936 fps | 95.6% |
| Ramshot X-Terminator | <<locked>> | 82% | 41,655 psi | 67% | 2864 fps | 95.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 24,845 psi | 40% | 1749 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 39,972 psi | 64% | 2854 fps | 97.8% |
| ReloadSwiss RS 52 | 33.2 gr | 90% | 43,091 psi | 70% | 3041 fps | 95.2% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 33,446 psi | 54% | 2808 fps | 95% |
| Rottweil R 901 | <<locked>> | 80% | 35,911 psi | 58% | 2749 fps | 97.5% |
| Rottweil R 902 | <<locked>> | 86% | 37,637 psi | 61% | 2795 fps | 95.8% |
| Rottweil R 903 | <<locked>> | 94% | 39,682 psi | 64% | 2900 fps | 95.8% |
| Shooters World AR Plus | <<locked>> | 80% | 48,341 psi | 78% | 3028 fps | 99.3% |
| Shooters World Match Rifle | <<locked>> | 80% | 31,154 psi | 50% | 2687 fps | 95.4% |
| Shooters World Precision | <<locked>> | 86% | 35,708 psi | 58% | 2769 fps | 95.2% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 42,395 psi | 68% | 2867 fps | 96.7% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 49,443 psi | 80% | 2697 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 44,744 psi | 72% | 2969 fps | 99.3% |
| SNPE Vectan SP 11 | <<locked>> | 94% | 42,119 psi | 68% | 2969 fps | 95.4% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 42,380 psi | 68% | 2890 fps | 99.9% |
| SNPE Vectan SP 7 | <<locked>> | 92% | 50,575 psi | 82% | 3058 fps | 95.5% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 41,945 psi | 68% | 2920 fps | 95.5% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 34,606 psi | 56% | 2667 fps | 97.3% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 28,036 psi | 45% | 2510 fps | 96.1% |
| Somchem S321 | <<locked>> | 80% | 37,739 psi | 61% | 2825 fps | 96.1% |
| Somchem S335 | <<locked>> | 80% | 33,895 psi | 55% | 2667 fps | 98% |
| Somchem S341 | <<locked>> | 86% | 40,567 psi | 65% | 2874 fps | 95% |
| Somchem S355 | <<locked>> | 92% | 38,276 psi | 62% | 2854 fps | 95.1% |
| Vihtavuori N120 | <<locked>> | 80% | 49,095 psi | 79% | 2900 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 39,494 psi | 64% | 2776 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 34,621 psi | 56% | 2680 fps | 99.3% |
| Vihtavuori N135 | <<locked>> | 80% | 29,530 psi | 48% | 2631 fps | 98.4% |
| Vihtavuori N140 | <<locked>> | 80% | 31,009 psi | 50% | 2638 fps | 96.6% |
| Vihtavuori N150 | <<locked>> | 90% | 34,403 psi | 55% | 2736 fps | 95.3% |
| Vihtavuori N530 | <<locked>> | 80% | 35,360 psi | 57% | 2743 fps | 95% |
| Vihtavuori N540 | <<locked>> | 80% | 29,675 psi | 48% | 2612 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 98% | 41,510 psi | 67% | 2881 fps | 95.7% |
| Winchester 748 | <<locked>> | 80% | 34,026 psi | 55% | 2772 fps | 95.5% |
| Winchester StaBALL Match | <<locked>> | 86% | 38,551 psi | 62% | 2864 fps | 95.2% |
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.
This overview compares 87 powders for 6 mm GT loaded with the .243 | 80gr | Barnes TTSX BT. ReloadSwiss RS 52 delivers the highest muzzle velocity at 3,235 fps; across all powders the maximum-charge window runs from 1,909 fps to 3,235 fps. Accurate 4064 gives the best case fill at 100 %, and 87 of the 87 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (427 MPa), the top charges use 54–90 %, leaving at least 10 % headroom. The 80.0 gr projectile in 0.243" calls for a 1:9.0 twist; slower twists will usually not stabilise this weight. Accurate 4064, ADI AR 2208, Alliant Reloder- TS 15.5 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 52, Hodgdon LEVERevolution rank at the top here: for 6 mm GT with the .243 | 80gr | Barnes TTSX 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.