Load Specifications
Load data in caliber 6 mm GT with .243 | 85gr | Barnes XLC 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, 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>> | 86% | 53,548 psi | 86% | 2963 fps | 100% |
| Accurate 2460 | <<locked>> | 84% | 55,434 psi | 89% | 3035 fps | 100% |
| Accurate 2495 | <<locked>> | 92% | 55,651 psi | 90% | 3038 fps | 100% |
| Accurate 2520 | <<locked>> | 86% | 53,185 psi | 86% | 3038 fps | 100% |
| Accurate 4064 | <<locked>> | 94% | 54,998 psi | 89% | 3074 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 49,879 psi | 80% | 3061 fps | 97.2% |
| Accurate LT-30 | <<locked>> | 82% | 55,419 psi | 89% | 2946 fps | 100% |
| Accurate LT-32 | <<locked>> | 82% | 55,767 psi | 90% | 2969 fps | 100% |
| ADI AR 2206H | <<locked>> | 90% | 55,477 psi | 89% | 3094 fps | 99.1% |
| ADI AR 2208 | <<locked>> | 94% | 52,649 psi | 85% | 3025 fps | 98.2% |
| ADI Benchmark 8208 | <<locked>> | 88% | 54,346 psi | 88% | 3045 fps | 99.6% |
| Alliant AR-Comp | <<locked>> | 88% | 54,621 psi | 88% | 3041 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 84% | 55,840 psi | 90% | 3159 fps | 99.5% |
| Alliant Power Pro 2000-MR | <<locked>> | 92% | 54,636 psi | 88% | 3199 fps | 98.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 96% | 55,593 psi | 90% | 3107 fps | 99.6% |
| Alliant Reloder-10x | <<locked>> | 82% | 53,214 psi | 86% | 2972 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 92% | 53,142 psi | 86% | 3074 fps | 98.4% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 48,530 psi | 78% | 3051 fps | 97% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 56,072 psi | 90% | 3222 fps | 99.6% |
| Baschieri & Pellagri 106 | <<locked>> | 82% | 54,476 psi | 88% | 2936 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 90% | 54,679 psi | 88% | 3094 fps | 98.2% |
| Bofors RP3 | <<locked>> | 94% | 52,895 psi | 85% | 3071 fps | 99.4% |
| Hodgdon Benchmark | <<locked>> | 86% | 53,388 psi | 86% | 2986 fps | 99.8% |
| Hodgdon BL-C2 | <<locked>> | 88% | 53,751 psi | 87% | 3081 fps | 99.8% |
| Hodgdon CFE223 | <<locked>> | 86% | 54,969 psi | 89% | 3169 fps | 98.7% |
| Hodgdon H322 | <<locked>> | 84% | 54,911 psi | 89% | 3051 fps | 100% |
| Hodgdon H335 | <<locked>> | 82% | 52,736 psi | 85% | 3025 fps | 100% |
| Hodgdon H380 | <<locked>> | 94% | 54,157 psi | 87% | 3074 fps | 97.4% |
| Hodgdon H4895 | <<locked>> | 90% | 55,985 psi | 90% | 3107 fps | 99.4% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 45,049 psi | 73% | 2936 fps | 97.8% |
| Hodgdon LEVERevolution | <<locked>> | 92% | 54,172 psi | 87% | 3130 fps | 99.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,099 psi | 57% | 1886 fps | 100% |
| Hodgdon VARGET | <<locked>> | 90% | 53,751 psi | 87% | 3054 fps | 99.2% |
| IMR 3031 | <<locked>> | 90% | 54,839 psi | 88% | 3097 fps | 100% |
| IMR 4064 | <<locked>> | 94% | 55,419 psi | 89% | 3064 fps | 98.7% |
| IMR 4198 | <<locked>> | 84% | 55,724 psi | 90% | 2969 fps | 100% |
| IMR 4831ᴾ | <<locked>> | 100% | 47,442 psi | 77% | 2995 fps | 96.8% |
| IMR 4895 | <<locked>> | 92% | 54,418 psi | 88% | 3110 fps | 99% |
| IMR 8208 XBR | <<locked>> | 88% | 54,346 psi | 88% | 3045 fps | 99.6% |
| Lovex D073.5 | <<locked>> | 84% | 55,259 psi | 89% | 3041 fps | 99.9% |
| Lovex D073.6 | <<locked>> | 90% | 54,955 psi | 89% | 3074 fps | 100% |
| Lovex S060 | <<locked>> | 90% | 55,361 psi | 89% | 3018 fps | 99.1% |
| Lovex S062 | <<locked>> | 94% | 55,492 psi | 90% | 3071 fps | 99.7% |
| Lovex S065ᴾ | <<locked>> | 100% | 54,650 psi | 88% | 3051 fps | 96.6% |
| Norma 201 | <<locked>> | 90% | 54,447 psi | 88% | 3041 fps | 99.6% |
| Norma 202 | <<locked>> | 90% | 54,462 psi | 88% | 3048 fps | 100% |
| Norma 203B | <<locked>> | 94% | 55,825 psi | 90% | 3123 fps | 99.2% |
| Norma URPᴾ | <<locked>> | 100% | 49,124 psi | 79% | 3045 fps | 96.9% |
| Ramshot Big Game | <<locked>> | 94% | 55,622 psi | 90% | 3136 fps | 99% |
| Ramshot TAC | <<locked>> | 88% | 54,998 psi | 89% | 3051 fps | 96.9% |
| Ramshot Wild Boar | <<locked>> | 88% | 54,244 psi | 87% | 3077 fps | 98.9% |
| Ramshot X-Terminator | <<locked>> | 86% | 55,593 psi | 90% | 3041 fps | 98.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,752 psi | 58% | 1936 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 84% | 54,331 psi | 88% | 3038 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 94% | 54,752 psi | 88% | 3051 fps | 95.9% |
| ReloadSwiss RS 52 | <<locked>> | 92% | 56,086 psi | 90% | 3196 fps | 98.8% |
| ReloadSwiss RS 60 | <<locked>> | 98% | 55,854 psi | 90% | 3232 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 49,313 psi | 80% | 3074 fps | 96.7% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 49,937 psi | 81% | 3084 fps | 95.9% |
| Rottweil R 901 | <<locked>> | 86% | 53,243 psi | 86% | 2992 fps | 100% |
| Rottweil R 902 | <<locked>> | 92% | 55,013 psi | 89% | 3041 fps | 99.7% |
| Rottweil R 903 | <<locked>> | 96% | 52,750 psi | 85% | 3061 fps | 99.2% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 54,650 psi | 88% | 3051 fps | 96.6% |
| Shooters World Match Rifle | <<locked>> | 90% | 54,955 psi | 89% | 3074 fps | 100% |
| Shooters World Precision | <<locked>> | 94% | 55,492 psi | 90% | 3071 fps | 99.7% |
| Shooters World Tactical Rifle | <<locked>> | 82% | 53,969 psi | 87% | 2999 fps | 99.4% |
| SNPE Vectan SP 11 | <<locked>> | 96% | 54,128 psi | 87% | 3120 fps | 98.9% |
| SNPE Vectan SP 3 | <<locked>> | 82% | 53,229 psi | 86% | 2986 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 88% | 53,359 psi | 86% | 3028 fps | 97.1% |
| SNPE Vectan SP 9 | <<locked>> | 90% | 53,795 psi | 87% | 3061 fps | 98.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 53,171 psi | 86% | 2943 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 96% | 55,738 psi | 90% | 2979 fps | 100% |
| Somchem S321 | <<locked>> | 86% | 55,825 psi | 90% | 3084 fps | 99.8% |
| Somchem S335 | <<locked>> | 90% | 55,288 psi | 89% | 2982 fps | 100% |
| Somchem S341 | <<locked>> | 90% | 55,985 psi | 90% | 3077 fps | 99% |
| Somchem S355 | <<locked>> | 96% | 53,171 psi | 86% | 3058 fps | 99.1% |
| Somchem S365ᴾ | <<locked>> | 100% | 44,193 psi | 71% | 2995 fps | 98.9% |
| Vihtavuori N130 | <<locked>> | 86% | 55,709 psi | 90% | 2956 fps | 100% |
| Vihtavuori N133 | <<locked>> | 88% | 52,968 psi | 85% | 2933 fps | 100% |
| Vihtavuori N135 | <<locked>> | 92% | 54,070 psi | 87% | 3015 fps | 100% |
| Vihtavuori N140 | <<locked>> | 92% | 54,737 psi | 88% | 3022 fps | 100% |
| Vihtavuori N150 | <<locked>> | 98% | 54,766 psi | 88% | 3041 fps | 99.8% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 51,605 psi | 83% | 3045 fps | 97.3% |
| Vihtavuori N530 | <<locked>> | 88% | 55,172 psi | 89% | 3048 fps | 99.7% |
| Vihtavuori N540 | <<locked>> | 92% | 53,432 psi | 86% | 3022 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 50,763 psi | 82% | 3048 fps | 97% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 52,547 psi | 85% | 3028 fps | 99.2% |
| Winchester 748 | <<locked>> | 88% | 54,476 psi | 88% | 3097 fps | 99.9% |
| Winchester StaBALL Match | <<locked>> | 90% | 53,359 psi | 86% | 3068 fps | 99.2% |
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 2015 | <<locked>> | 80% | 45,034 psi | 73% | 2825 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 48,675 psi | 79% | 2923 fps | 99.9% |
| Accurate 2495 | <<locked>> | 80% | 38,624 psi | 62% | 2743 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 43,976 psi | 71% | 2877 fps | 99.4% |
| Accurate 4064 | <<locked>> | 80% | 36,390 psi | 59% | 2723 fps | 98.9% |
| Accurate 4350 | <<locked>> | 96% | 43,642 psi | 70% | 2943 fps | 95.7% |
| Accurate LT-30 | <<locked>> | 80% | 52,301 psi | 84% | 2897 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 52,649 psi | 85% | 2920 fps | 100% |
| ADI AR 2206H | <<locked>> | 80% | 41,278 psi | 67% | 2822 fps | 96.4% |
| ADI AR 2208 | <<locked>> | 84% | 39,363 psi | 63% | 2759 fps | 95% |
| ADI Benchmark 8208 | <<locked>> | 80% | 43,062 psi | 69% | 2835 fps | 98.1% |
| Alliant AR-Comp | <<locked>> | 80% | 42,221 psi | 68% | 2844 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 49,676 psi | 80% | 3048 fps | 98.7% |
| Alliant Power Pro 2000-MR | 33.3 gr | 84% | 42,105 psi | 68% | 2940 fps | 95.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 34,606 psi | 56% | 2684 fps | 95.3% |
| Alliant Reloder-10x | <<locked>> | 80% | 50,227 psi | 81% | 2927 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 39,407 psi | 64% | 2799 fps | 95.2% |
| Alliant Reloder-16 | <<locked>> | 96% | 43,381 psi | 70% | 2943 fps | 95.5% |
| Alliant Reloder-17 | <<locked>> | 88% | 38,319 psi | 62% | 2854 fps | 95.8% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 51,213 psi | 83% | 2887 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 42,366 psi | 68% | 2861 fps | 95.4% |
| Bofors RP3 | <<locked>> | 80% | 34,345 psi | 55% | 2687 fps | 95.4% |
| Hodgdon Benchmark | <<locked>> | 80% | 44,860 psi | 72% | 2828 fps | 98.8% |
| Hodgdon BL-C2 | <<locked>> | 80% | 41,481 psi | 67% | 2851 fps | 98.3% |
| Hodgdon CFE223 | <<locked>> | 80% | 44,730 psi | 72% | 2979 fps | 96.7% |
| Hodgdon H322 | <<locked>> | 80% | 48,370 psi | 78% | 2946 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 49,458 psi | 80% | 2969 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 44,802 psi | 72% | 2900 fps | 95.3% |
| Hodgdon H4895 | <<locked>> | 80% | 41,539 psi | 67% | 2835 fps | 97.1% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 37,652 psi | 61% | 2772 fps | 95.6% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 37,260 psi | 60% | 2785 fps | 96.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,266 psi | 42% | 1686 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 39,755 psi | 64% | 2779 fps | 96.5% |
| IMR 3031 | <<locked>> | 80% | 40,524 psi | 65% | 2844 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 39,044 psi | 63% | 2746 fps | 95.2% |
| IMR 4198 | <<locked>> | 80% | 49,908 psi | 80% | 2881 fps | 100% |
| IMR 4831 | <<locked>> | 96% | 41,901 psi | 68% | 2887 fps | 95.3% |
| IMR 4895 | <<locked>> | 80% | 38,029 psi | 61% | 2779 fps | 95.5% |
| IMR 8208 XBR | <<locked>> | 80% | 43,062 psi | 69% | 2835 fps | 98.1% |
| Lovex D073.5 | <<locked>> | 80% | 48,530 psi | 78% | 2927 fps | 99.5% |
| Lovex D073.6 | <<locked>> | 80% | 40,190 psi | 65% | 2808 fps | 98.9% |
| Lovex S060 | <<locked>> | 80% | 41,263 psi | 67% | 2753 fps | 96.5% |
| Lovex S062 | <<locked>> | 80% | 36,796 psi | 59% | 2703 fps | 96.6% |
| Lovex S065 | <<locked>> | 96% | 48,515 psi | 78% | 2940 fps | 95.3% |
| Norma 201 | <<locked>> | 80% | 40,770 psi | 66% | 2779 fps | 97.6% |
| Norma 202 | <<locked>> | 80% | 40,596 psi | 65% | 2795 fps | 99.4% |
| Norma 203B | <<locked>> | 80% | 36,666 psi | 59% | 2736 fps | 95% |
| Norma URP | <<locked>> | 96% | 43,439 psi | 70% | 2933 fps | 95.4% |
| Ramshot Big Game | <<locked>> | 82% | 38,145 psi | 62% | 2789 fps | 95.1% |
| Ramshot TAC | <<locked>> | 84% | 48,588 psi | 78% | 2936 fps | 95.5% |
| Ramshot Wild Boar | <<locked>> | 80% | 42,032 psi | 68% | 2844 fps | 96.6% |
| Ramshot X-Terminator | <<locked>> | 80% | 46,456 psi | 75% | 2881 fps | 97.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,600 psi | 43% | 1729 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 47,747 psi | 77% | 2923 fps | 99.6% |
| ReloadSwiss RS 50 | <<locked>> | 92% | 51,416 psi | 83% | 2995 fps | 95.1% |
| ReloadSwiss RS 52 | 31.5 gr | 82% | 40,625 psi | 66% | 2897 fps | 95.5% |
| ReloadSwiss RS 60 | 31.2 gr | 80% | 31,894 psi | 51% | 2684 fps | 95.7% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 43,178 psi | 70% | 2949 fps | 95% |
| ReloadSwiss RS 70 | <<locked>> | 98% | 46,804 psi | 75% | 3018 fps | 95% |
| Rottweil R 901 | <<locked>> | 80% | 45,020 psi | 73% | 2844 fps | 99.7% |
| Rottweil R 902 | <<locked>> | 80% | 38,986 psi | 63% | 2730 fps | 97.1% |
| Rottweil R 903 | <<locked>> | 82% | 34,534 psi | 56% | 2684 fps | 95.1% |
| Shooters World Long Rifle | <<locked>> | 96% | 48,515 psi | 78% | 2940 fps | 95.3% |
| Shooters World Match Rifle | <<locked>> | 80% | 40,190 psi | 65% | 2808 fps | 98.9% |
| Shooters World Precision | <<locked>> | 80% | 36,796 psi | 59% | 2703 fps | 96.6% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 50,560 psi | 82% | 2940 fps | 99% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 37,434 psi | 60% | 2779 fps | 95% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 50,154 psi | 81% | 2936 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 46,833 psi | 76% | 2907 fps | 95.7% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 39,436 psi | 64% | 2776 fps | 95.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 41,771 psi | 67% | 2740 fps | 99.4% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 34,635 psi | 56% | 2595 fps | 99% |
| Somchem S321 | <<locked>> | 80% | 46,093 psi | 74% | 2913 fps | 98.9% |
| Somchem S335 | <<locked>> | 80% | 41,611 psi | 67% | 2746 fps | 99.8% |
| Somchem S341 | <<locked>> | 80% | 40,509 psi | 65% | 2789 fps | 96.1% |
| Somchem S355 | <<locked>> | 82% | 35,259 psi | 57% | 2687 fps | 95% |
| Somchem S365 | <<locked>> | 90% | 32,793 psi | 53% | 2710 fps | 95.3% |
| Vihtavuori N130 | <<locked>> | 80% | 46,905 psi | 76% | 2818 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 41,698 psi | 67% | 2740 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 37,550 psi | 61% | 2723 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 38,189 psi | 62% | 2720 fps | 99.2% |
| Vihtavuori N150 | <<locked>> | 80% | 31,473 psi | 51% | 2566 fps | 95.2% |
| Vihtavuori N160 | <<locked>> | 94% | 43,033 psi | 69% | 2881 fps | 95.2% |
| Vihtavuori N530 | <<locked>> | 80% | 42,989 psi | 69% | 2828 fps | 98.1% |
| Vihtavuori N540 | <<locked>> | 80% | 36,999 psi | 60% | 2707 fps | 98.6% |
| Vihtavuori N550 | <<locked>> | 96% | 44,947 psi | 72% | 2940 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 36,143 psi | 58% | 2687 fps | 95.1% |
| Winchester 748 | <<locked>> | 80% | 41,742 psi | 67% | 2864 fps | 98.6% |
| Winchester StaBALL Match | <<locked>> | 80% | 38,856 psi | 63% | 2782 fps | 96.4% |
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 107 powders for 6 mm GT loaded with the .243 | 85gr | Barnes XLC BT. ReloadSwiss RS 60 delivers the highest muzzle velocity at 3,232 fps; across all powders the maximum-charge window runs from 1,886 fps to 3,232 fps. Accurate 4350 gives the best case fill at 100 %, and 107 of the 107 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (427 MPa), the top charges use 57–90 %, 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 4350, Alliant Reloder-16, Alliant Reloder-17 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 XLC 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.