Load Specifications
Load data in caliber 6 mm GT with .243 | 85gr | Barnes TSX 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 Alliant Power Pro 2000-MR, Hodgdon CFE223 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>> | 90% | 53,838 psi | 87% | 2992 fps | 100% |
| Accurate 2200 | <<locked>> | 82% | 54,447 psi | 88% | 3087 fps | 98.2% |
| Accurate 2230 | <<locked>> | 82% | 55,317 psi | 89% | 3097 fps | 98.6% |
| Accurate 2460 | <<locked>> | 88% | 56,014 psi | 90% | 3064 fps | 100% |
| Accurate 2495 | <<locked>> | 96% | 54,273 psi | 88% | 3048 fps | 100% |
| Accurate 2520 | <<locked>> | 90% | 53,853 psi | 87% | 3068 fps | 100% |
| Accurate 4064 | <<locked>> | 98% | 53,867 psi | 87% | 3084 fps | 100% |
| Accurate LT-30 | <<locked>> | 84% | 54,230 psi | 87% | 2943 fps | 100% |
| Accurate LT-32 | <<locked>> | 84% | 54,679 psi | 88% | 2966 fps | 100% |
| ADI AR 2206H | <<locked>> | 92% | 53,243 psi | 86% | 3074 fps | 98.7% |
| ADI AR 2207 | <<locked>> | 82% | 55,738 psi | 90% | 2969 fps | 100% |
| ADI AR 2208 | <<locked>> | 98% | 54,172 psi | 87% | 3064 fps | 98.3% |
| ADI AR 2219 | <<locked>> | 84% | 54,926 psi | 89% | 3068 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 90% | 52,388 psi | 84% | 3028 fps | 99.4% |
| Alliant AR-Comp | <<locked>> | 92% | 55,579 psi | 90% | 3074 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 86% | 53,853 psi | 87% | 3143 fps | 99.2% |
| Alliant Power Pro 2000-MR | <<locked>> | 94% | 52,533 psi | 85% | 3173 fps | 98% |
| Alliant Reloder- TS 15.5 | <<locked>> | 98% | 53,229 psi | 86% | 3084 fps | 99.3% |
| Alliant Reloder-10x | <<locked>> | 86% | 53,882 psi | 87% | 3005 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 96% | 53,940 psi | 87% | 3104 fps | 98.5% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 50,546 psi | 82% | 3136 fps | 98.9% |
| Baschieri & Pellagri 106 | <<locked>> | 84% | 53,563 psi | 86% | 2933 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 92% | 52,837 psi | 85% | 3077 fps | 97.8% |
| Bofors RP3 | <<locked>> | 98% | 53,592 psi | 86% | 3104 fps | 99.4% |
| Hodgdon Benchmark | <<locked>> | 90% | 54,679 psi | 88% | 3018 fps | 99.8% |
| Hodgdon BL-C2 | <<locked>> | 92% | 54,998 psi | 89% | 3117 fps | 99.8% |
| Hodgdon CFE223 | <<locked>> | 88% | 52,837 psi | 85% | 3150 fps | 98.3% |
| Hodgdon H322 | <<locked>> | 86% | 52,982 psi | 85% | 3041 fps | 100% |
| Hodgdon H335 | <<locked>> | 86% | 54,273 psi | 88% | 3064 fps | 100% |
| Hodgdon H380 | <<locked>> | 98% | 55,056 psi | 89% | 3104 fps | 97.5% |
| Hodgdon H4895 | <<locked>> | 92% | 53,722 psi | 87% | 3087 fps | 99.2% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 39,668 psi | 64% | 2838 fps | 96.2% |
| Hodgdon LEVERevolution | <<locked>> | 96% | 55,869 psi | 90% | 3169 fps | 99.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,142 psi | 55% | 1873 fps | 100% |
| Hodgdon VARGET | <<locked>> | 94% | 55,317 psi | 89% | 3094 fps | 99.3% |
| IMR 3031 | <<locked>> | 94% | 55,840 psi | 90% | 3130 fps | 100% |
| IMR 4064 | <<locked>> | 96% | 53,635 psi | 87% | 3048 fps | 98.4% |
| IMR 4198 | <<locked>> | 86% | 54,375 psi | 88% | 2966 fps | 100% |
| IMR 4895 | <<locked>> | 96% | 55,288 psi | 89% | 3143 fps | 99.1% |
| IMR 8208 XBR | <<locked>> | 90% | 52,388 psi | 84% | 3028 fps | 99.4% |
| Lovex D073.4 | <<locked>> | 82% | 56,057 psi | 90% | 3081 fps | 100% |
| Lovex D073.5 | <<locked>> | 86% | 52,475 psi | 85% | 3018 fps | 99.8% |
| Lovex D073.6 | <<locked>> | 94% | 55,347 psi | 89% | 3104 fps | 100% |
| Lovex S060 | <<locked>> | 92% | 53,838 psi | 87% | 3009 fps | 98.8% |
| Lovex S062 | <<locked>> | 96% | 52,881 psi | 85% | 3045 fps | 99.5% |
| Norma 200 | <<locked>> | 82% | 53,708 psi | 87% | 2976 fps | 100% |
| Norma 201 | <<locked>> | 94% | 55,288 psi | 89% | 3074 fps | 99.7% |
| Norma 202 | <<locked>> | 94% | 55,405 psi | 89% | 3081 fps | 100% |
| Norma 203B | <<locked>> | 96% | 53,011 psi | 86% | 3091 fps | 98.8% |
| Ramshot Big Game | <<locked>> | 96% | 53,708 psi | 87% | 3120 fps | 98.7% |
| Ramshot TAC | <<locked>> | 90% | 53,258 psi | 86% | 3035 fps | 96.5% |
| Ramshot Wild Boar | <<locked>> | 92% | 56,014 psi | 90% | 3120 fps | 99% |
| Ramshot X-Terminator | <<locked>> | 88% | 54,157 psi | 87% | 3035 fps | 98.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,185 psi | 55% | 1913 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 88% | 55,651 psi | 90% | 3074 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 94% | 53,737 psi | 87% | 3173 fps | 98.5% |
| ReloadSwiss RS 60ᴾ | <<locked>> | 100% | 54,085 psi | 87% | 3215 fps | 100% |
| Rottweil R 901 | <<locked>> | 92% | 55,898 psi | 90% | 3061 fps | 100% |
| Rottweil R 902 | <<locked>> | 96% | 55,506 psi | 90% | 3068 fps | 99.7% |
| Rottweil R 903ᴾ | <<locked>> | 100% | 52,968 psi | 85% | 3081 fps | 99.2% |
| Shooters World AR Plus | <<locked>> | 82% | 56,057 psi | 90% | 3081 fps | 100% |
| Shooters World Match Rifle | <<locked>> | 94% | 55,347 psi | 89% | 3104 fps | 100% |
| Shooters World Precision | <<locked>> | 96% | 52,881 psi | 85% | 3045 fps | 99.5% |
| Shooters World Tactical Rifle | <<locked>> | 86% | 55,869 psi | 90% | 3041 fps | 99.5% |
| SNPE Vectan BA6 1/2 | <<locked>> | 82% | 54,984 psi | 89% | 2697 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 84% | 55,317 psi | 89% | 3077 fps | 100% |
| SNPE Vectan SP 11ᴾ | <<locked>> | 100% | 55,448 psi | 89% | 3153 fps | 99% |
| SNPE Vectan SP 3 | <<locked>> | 86% | 55,158 psi | 89% | 3031 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 92% | 54,607 psi | 88% | 3061 fps | 97.3% |
| SNPE Vectan SP 9 | <<locked>> | 94% | 55,027 psi | 89% | 3094 fps | 98.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 92% | 53,954 psi | 87% | 2972 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 98% | 53,664 psi | 87% | 2966 fps | 100% |
| Somchem S321 | <<locked>> | 88% | 53,969 psi | 87% | 3071 fps | 99.7% |
| Somchem S335 | <<locked>> | 92% | 52,837 psi | 85% | 2966 fps | 100% |
| Somchem S341 | <<locked>> | 92% | 54,070 psi | 87% | 3061 fps | 98.8% |
| Somchem S355ᴾ | <<locked>> | 100% | 53,766 psi | 87% | 3084 fps | 99.1% |
| Somchem S365ᴾ | <<locked>> | 100% | 38,551 psi | 62% | 2887 fps | 97.5% |
| Vihtavuori N120 | <<locked>> | 82% | 55,637 psi | 90% | 2913 fps | 100% |
| Vihtavuori N130 | <<locked>> | 88% | 54,157 psi | 87% | 2953 fps | 100% |
| Vihtavuori N133 | <<locked>> | 92% | 53,853 psi | 87% | 2963 fps | 100% |
| Vihtavuori N135 | <<locked>> | 96% | 54,215 psi | 87% | 3038 fps | 100% |
| Vihtavuori N140 | <<locked>> | 94% | 52,576 psi | 85% | 3005 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 52,054 psi | 84% | 3015 fps | 99.6% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 45,977 psi | 74% | 2956 fps | 95.9% |
| Vihtavuori N530 | <<locked>> | 90% | 53,113 psi | 86% | 3031 fps | 99.5% |
| Vihtavuori N540 | <<locked>> | 96% | 54,447 psi | 88% | 3051 fps | 100% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 47,630 psi | 77% | 2949 fps | 98.3% |
| Winchester 748 | <<locked>> | 92% | 55,637 psi | 90% | 3133 fps | 99.9% |
| Winchester StaBALL Match | <<locked>> | 94% | 54,955 psi | 89% | 3107 fps | 99.3% |
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% | 39,059 psi | 63% | 2736 fps | 100% |
| Accurate 2200 | <<locked>> | 80% | 50,633 psi | 82% | 3022 fps | 97.6% |
| Accurate 2230 | <<locked>> | 80% | 51,358 psi | 83% | 3031 fps | 98% |
| Accurate 2460 | <<locked>> | 80% | 42,714 psi | 69% | 2838 fps | 99.4% |
| Accurate 2495 | <<locked>> | 80% | 31,343 psi | 51% | 2618 fps | 99.4% |
| Accurate 2520 | <<locked>> | 80% | 37,898 psi | 61% | 2776 fps | 98.4% |
| Accurate 4064 | <<locked>> | 80% | 29,675 psi | 48% | 2589 fps | 97% |
| Accurate LT-30 | <<locked>> | 80% | 47,935 psi | 77% | 2841 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 48,312 psi | 78% | 2861 fps | 99.8% |
| ADI AR 2206H | <<locked>> | 82% | 38,392 psi | 62% | 2779 fps | 95.4% |
| ADI AR 2207 | <<locked>> | 80% | 52,330 psi | 84% | 2920 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 39,740 psi | 64% | 2789 fps | 95% |
| ADI AR 2219 | <<locked>> | 80% | 47,427 psi | 76% | 2946 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 80% | 38,072 psi | 61% | 2749 fps | 96.7% |
| Alliant AR-Comp | <<locked>> | 80% | 36,492 psi | 59% | 2759 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 43,903 psi | 71% | 2956 fps | 97.6% |
| Alliant Power Pro 2000-MR | 34.2 gr | 88% | 42,757 psi | 69% | 2972 fps | 95.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 36,071 psi | 58% | 2746 fps | 95.8% |
| Alliant Reloder-10x | <<locked>> | 80% | 44,425 psi | 72% | 2851 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 39,088 psi | 63% | 2815 fps | 95% |
| Alliant Reloder-17 | <<locked>> | 92% | 38,363 psi | 62% | 2874 fps | 95.7% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 46,905 psi | 76% | 2831 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 86% | 43,207 psi | 70% | 2900 fps | 95.6% |
| Bofors RP3 | <<locked>> | 86% | 35,128 psi | 57% | 2736 fps | 95.6% |
| Hodgdon Benchmark | <<locked>> | 80% | 40,089 psi | 65% | 2749 fps | 97.9% |
| Hodgdon BL-C2 | <<locked>> | 80% | 35,984 psi | 58% | 2749 fps | 96.8% |
| Hodgdon CFE223 | 31.8 gr | 80% | 39,610 psi | 64% | 2884 fps | 95.1% |
| Hodgdon H322 | <<locked>> | 80% | 43,671 psi | 70% | 2881 fps | 99.9% |
| Hodgdon H335 | <<locked>> | 80% | 44,222 psi | 71% | 2894 fps | 99.7% |
| Hodgdon H380 | <<locked>> | 92% | 45,020 psi | 73% | 2927 fps | 95.3% |
| Hodgdon H4895 | <<locked>> | 80% | 36,260 psi | 58% | 2736 fps | 95.4% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 37,217 psi | 60% | 2782 fps | 95.4% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 34,795 psi | 56% | 2746 fps | 95.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,092 psi | 40% | 1670 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 37,376 psi | 60% | 2746 fps | 95.7% |
| IMR 3031 | <<locked>> | 80% | 34,911 psi | 56% | 2749 fps | 99.5% |
| IMR 4064 | <<locked>> | 86% | 39,160 psi | 63% | 2769 fps | 95.1% |
| IMR 4198 | <<locked>> | 80% | 45,672 psi | 74% | 2831 fps | 100% |
| IMR 4895 | <<locked>> | 84% | 37,550 psi | 61% | 2792 fps | 95.3% |
| IMR 8208 XBR | <<locked>> | 80% | 38,072 psi | 61% | 2749 fps | 96.7% |
| Lovex D073.4 | <<locked>> | 80% | 52,083 psi | 84% | 3018 fps | 99.9% |
| Lovex D073.5 | <<locked>> | 80% | 42,279 psi | 68% | 2835 fps | 98.6% |
| Lovex D073.6 | <<locked>> | 80% | 34,084 psi | 55% | 2697 fps | 97.4% |
| Lovex S060 | <<locked>> | 80% | 37,028 psi | 60% | 2674 fps | 95% |
| Lovex S062 | <<locked>> | 82% | 33,707 psi | 54% | 2654 fps | 95.4% |
| Norma 200 | <<locked>> | 80% | 50,415 psi | 81% | 2927 fps | 100% |
| Norma 201 | <<locked>> | 80% | 35,288 psi | 57% | 2680 fps | 96% |
| Norma 202 | <<locked>> | 80% | 35,172 psi | 57% | 2697 fps | 98.3% |
| Norma 203B | <<locked>> | 86% | 38,392 psi | 62% | 2802 fps | 95.5% |
| Ramshot Big Game | <<locked>> | 86% | 38,014 psi | 61% | 2808 fps | 95% |
| Ramshot TAC | <<locked>> | 88% | 49,748 psi | 80% | 2972 fps | 95.7% |
| Ramshot Wild Boar | <<locked>> | 82% | 39,769 psi | 64% | 2818 fps | 95.8% |
| Ramshot X-Terminator | <<locked>> | 80% | 41,582 psi | 67% | 2799 fps | 96.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,237 psi | 41% | 1713 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 43,033 psi | 69% | 2854 fps | 99% |
| ReloadSwiss RS 52 | 32.4 gr | 86% | 40,582 psi | 65% | 2920 fps | 95.4% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 31,473 psi | 51% | 2697 fps | 95.3% |
| Rottweil R 901 | <<locked>> | 80% | 38,493 psi | 62% | 2743 fps | 98.8% |
| Rottweil R 902 | <<locked>> | 80% | 33,257 psi | 54% | 2621 fps | 95.1% |
| Rottweil R 903 | <<locked>> | 88% | 35,360 psi | 57% | 2733 fps | 95.3% |
| Shooters World AR Plus | <<locked>> | 80% | 52,083 psi | 84% | 3018 fps | 99.9% |
| Shooters World Match Rifle | <<locked>> | 80% | 34,084 psi | 55% | 2697 fps | 97.4% |
| Shooters World Precision | <<locked>> | 82% | 33,707 psi | 54% | 2654 fps | 95.4% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 45,426 psi | 73% | 2864 fps | 98.2% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 52,170 psi | 84% | 2657 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 48,080 psi | 78% | 2959 fps | 99.9% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 39,581 psi | 64% | 2851 fps | 95.6% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 45,397 psi | 73% | 2874 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 88% | 47,703 psi | 77% | 2943 fps | 95.8% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 39,813 psi | 64% | 2808 fps | 95.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 36,999 psi | 60% | 2661 fps | 98.6% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 30,168 psi | 49% | 2510 fps | 97.8% |
| Somchem S321 | <<locked>> | 80% | 40,727 psi | 66% | 2828 fps | 97.8% |
| Somchem S335 | <<locked>> | 80% | 36,579 psi | 59% | 2667 fps | 99.1% |
| Somchem S341 | <<locked>> | 82% | 38,218 psi | 62% | 2759 fps | 95.2% |
| Somchem S355 | <<locked>> | 88% | 36,448 psi | 59% | 2746 fps | 95.4% |
| Somchem S365 | <<locked>> | 96% | 33,678 psi | 54% | 2759 fps | 95.6% |
| Vihtavuori N120 | <<locked>> | 80% | 52,228 psi | 84% | 2864 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 42,134 psi | 68% | 2756 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 37,101 psi | 60% | 2671 fps | 99.9% |
| Vihtavuori N135 | <<locked>> | 80% | 32,126 psi | 52% | 2628 fps | 99.5% |
| Vihtavuori N140 | <<locked>> | 80% | 33,373 psi | 54% | 2635 fps | 98.1% |
| Vihtavuori N150 | <<locked>> | 86% | 32,445 psi | 52% | 2621 fps | 95.6% |
| Vihtavuori N160 | <<locked>> | 98% | 43,134 psi | 70% | 2900 fps | 95.1% |
| Vihtavuori N530 | <<locked>> | 80% | 37,869 psi | 61% | 2740 fps | 96.8% |
| Vihtavuori N540 | <<locked>> | 80% | 31,894 psi | 51% | 2608 fps | 97.2% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 38,667 psi | 62% | 2766 fps | 95.9% |
| Winchester 748 | <<locked>> | 80% | 36,883 psi | 59% | 2782 fps | 97.4% |
| Winchester StaBALL Match | <<locked>> | 82% | 36,013 psi | 58% | 2740 fps | 95.3% |
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.
This overview compares 89 powders for 6 mm GT loaded with the .243 | 85gr | Barnes TSX BT. ReloadSwiss RS 60 delivers the highest muzzle velocity at 3,215 fps; across all powders the maximum-charge window runs from 1,873 fps to 3,215 fps. Alliant Reloder-17 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 (427 MPa), the top charges use 55–90 %, leaving at least 10 % headroom. The 85.0 gr projectile in 0.243" calls for a 1:9.5 twist; slower twists will usually not stabilise this weight. Alliant Reloder-17, Hodgdon Hybrid 100V, 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 Power Pro 2000-MR, Hodgdon CFE223, ReloadSwiss RS 52 rank at the top here: for 6 mm GT with the .243 | 85gr | Barnes TSX 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.