Load Specifications
Load data in caliber 6 mm GT with .243 | 85gr | Lehigh Defense Controlled Chaos 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% | 54,462 psi | 88% | 3015 fps | 100% |
| Accurate 2460 | <<locked>> | 84% | 53,156 psi | 86% | 3038 fps | 100% |
| Accurate 2495 | <<locked>> | 94% | 55,695 psi | 90% | 3077 fps | 100% |
| Accurate 2520 | <<locked>> | 88% | 53,156 psi | 86% | 3087 fps | 100% |
| Accurate 2520 | <<locked>> | 88% | 53,156 psi | 86% | 3087 fps | 100% |
| Accurate 4064 | <<locked>> | 96% | 55,579 psi | 90% | 3123 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 47,587 psi | 77% | 3054 fps | 97.1% |
| Accurate LT-30 | <<locked>> | 84% | 54,752 psi | 88% | 2940 fps | 100% |
| Accurate LT-32 | <<locked>> | 84% | 55,129 psi | 89% | 2963 fps | 100% |
| ADI AR 2206H | <<locked>> | 90% | 53,853 psi | 87% | 3104 fps | 99.1% |
| ADI AR 2208 | <<locked>> | 96% | 54,665 psi | 88% | 3094 fps | 98.7% |
| ADI AR 2219 | <<locked>> | 82% | 54,752 psi | 88% | 3084 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 88% | 52,939 psi | 85% | 3058 fps | 99.6% |
| Alliant AR-Comp | <<locked>> | 88% | 52,707 psi | 85% | 3048 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 92% | 53,316 psi | 86% | 3212 fps | 98.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 96% | 54,143 psi | 87% | 3120 fps | 99.6% |
| Alliant Reloder-10x | <<locked>> | 84% | 54,621 psi | 88% | 3031 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 94% | 54,810 psi | 88% | 3140 fps | 98.9% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 47,108 psi | 76% | 3064 fps | 97.1% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 54,810 psi | 88% | 3238 fps | 99.6% |
| Baschieri & Pellagri 106 | <<locked>> | 82% | 53,330 psi | 86% | 2953 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 90% | 53,447 psi | 86% | 3110 fps | 98.3% |
| Bofors RP3 | <<locked>> | 96% | 54,607 psi | 88% | 3136 fps | 99.7% |
| Hodgdon Benchmark | <<locked>> | 88% | 55,114 psi | 89% | 3048 fps | 99.9% |
| Hodgdon BL-C2 | <<locked>> | 90% | 55,361 psi | 89% | 3140 fps | 99.9% |
| Hodgdon CFE223 | <<locked>> | 86% | 53,359 psi | 86% | 3179 fps | 98.7% |
| Hodgdon H322 | <<locked>> | 84% | 53,345 psi | 86% | 3064 fps | 100% |
| Hodgdon H335 | <<locked>> | 84% | 54,781 psi | 88% | 3091 fps | 100% |
| Hodgdon H380 | <<locked>> | 94% | 52,460 psi | 85% | 3084 fps | 97.5% |
| Hodgdon H4895 | <<locked>> | 90% | 54,302 psi | 88% | 3117 fps | 99.5% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 43,439 psi | 70% | 2943 fps | 97.8% |
| Hodgdon LEVERevolution | <<locked>> | 92% | 52,866 psi | 85% | 3140 fps | 99.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,505 psi | 56% | 1903 fps | 100% |
| Hodgdon VARGET | <<locked>> | 92% | 55,506 psi | 90% | 3117 fps | 99.5% |
| IMR 3031 | <<locked>> | 90% | 53,403 psi | 86% | 3107 fps | 100% |
| IMR 4064 | <<locked>> | 94% | 54,360 psi | 88% | 3084 fps | 98.8% |
| IMR 4198 | <<locked>> | 84% | 54,433 psi | 88% | 2986 fps | 100% |
| IMR 4831ᴾ | <<locked>> | 100% | 45,614 psi | 74% | 2999 fps | 96.7% |
| IMR 4895 | <<locked>> | 92% | 53,026 psi | 86% | 3123 fps | 99.1% |
| IMR 8208 XBR | <<locked>> | 88% | 52,939 psi | 85% | 3058 fps | 99.6% |
| Lovex D073.5 | <<locked>> | 84% | 52,953 psi | 85% | 3045 fps | 99.9% |
| Lovex D073.6 | <<locked>> | 90% | 52,707 psi | 85% | 3077 fps | 100% |
| Lovex S060 | <<locked>> | 90% | 53,693 psi | 87% | 3028 fps | 99.1% |
| Lovex S062 | <<locked>> | 94% | 53,490 psi | 86% | 3077 fps | 99.7% |
| Lovex S065ᴾ | <<locked>> | 100% | 52,910 psi | 85% | 3061 fps | 96.7% |
| Norma 201 | <<locked>> | 92% | 55,985 psi | 90% | 3107 fps | 99.8% |
| Norma 202 | <<locked>> | 90% | 52,808 psi | 85% | 3058 fps | 100% |
| Norma 203B | <<locked>> | 94% | 53,969 psi | 87% | 3127 fps | 99.1% |
| Norma URPᴾ | <<locked>> | 100% | 47,514 psi | 77% | 3051 fps | 96.9% |
| Ramshot Big Game | <<locked>> | 94% | 54,694 psi | 88% | 3156 fps | 99.1% |
| Ramshot TAC | <<locked>> | 88% | 53,751 psi | 87% | 3068 fps | 97% |
| Ramshot Wild Boar | <<locked>> | 88% | 52,562 psi | 85% | 3084 fps | 98.9% |
| Ramshot X-Terminator | <<locked>> | 86% | 54,418 psi | 88% | 3061 fps | 99% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,012 psi | 56% | 1949 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 84% | 52,576 psi | 85% | 3045 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 94% | 53,214 psi | 86% | 3064 fps | 96% |
| ReloadSwiss RS 52 | <<locked>> | 92% | 54,839 psi | 88% | 3209 fps | 98.9% |
| ReloadSwiss RS 60 | <<locked>> | 98% | 54,737 psi | 88% | 3248 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 47,659 psi | 77% | 3077 fps | 96.8% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 48,472 psi | 78% | 3094 fps | 96.1% |
| Rottweil R 901 | <<locked>> | 88% | 53,461 psi | 86% | 3038 fps | 100% |
| Rottweil R 902 | <<locked>> | 92% | 52,997 psi | 85% | 3048 fps | 99.6% |
| Rottweil R 903 | <<locked>> | 98% | 53,983 psi | 87% | 3117 fps | 99.5% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 52,910 psi | 85% | 3061 fps | 96.7% |
| Shooters World Match Rifle | <<locked>> | 90% | 52,707 psi | 85% | 3077 fps | 100% |
| Shooters World Precision | <<locked>> | 94% | 53,490 psi | 86% | 3077 fps | 99.7% |
| Shooters World Tactical Rifle | <<locked>> | 82% | 52,547 psi | 85% | 3009 fps | 99.4% |
| SNPE Vectan SP 10 | <<locked>> | 82% | 55,448 psi | 89% | 3097 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 96% | 52,707 psi | 85% | 3130 fps | 98.9% |
| SNPE Vectan SP 3 | <<locked>> | 86% | 55,724 psi | 90% | 3028 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 90% | 55,259 psi | 89% | 3097 fps | 97.8% |
| SNPE Vectan SP 9 | <<locked>> | 92% | 55,637 psi | 90% | 3127 fps | 99.3% |
| SNPE Vectan Tubal 3000 | <<locked>> | 90% | 54,491 psi | 88% | 2999 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 96% | 54,331 psi | 88% | 2992 fps | 100% |
| Somchem S321 | <<locked>> | 86% | 54,462 psi | 88% | 3100 fps | 99.8% |
| Somchem S335 | <<locked>> | 90% | 53,505 psi | 86% | 2995 fps | 100% |
| Somchem S341 | <<locked>> | 90% | 54,650 psi | 88% | 3091 fps | 99.1% |
| Somchem S355 | <<locked>> | 98% | 54,607 psi | 88% | 3117 fps | 99.5% |
| Somchem S365ᴾ | <<locked>> | 100% | 42,322 psi | 68% | 2992 fps | 98.8% |
| Vihtavuori N130 | <<locked>> | 86% | 54,085 psi | 87% | 2969 fps | 100% |
| Vihtavuori N133 | <<locked>> | 90% | 54,447 psi | 88% | 2989 fps | 100% |
| Vihtavuori N135 | <<locked>> | 96% | 55,085 psi | 89% | 3041 fps | 100% |
| Vihtavuori N140 | <<locked>> | 92% | 53,505 psi | 86% | 3038 fps | 100% |
| Vihtavuori N150 | <<locked>> | 98% | 52,750 psi | 85% | 3045 fps | 99.8% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 50,009 psi | 81% | 3054 fps | 97.4% |
| Vihtavuori N530 | <<locked>> | 88% | 53,592 psi | 86% | 3061 fps | 99.7% |
| Vihtavuori N540 | <<locked>> | 94% | 55,056 psi | 89% | 3081 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 49,371 psi | 80% | 3061 fps | 97.1% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 51,213 psi | 83% | 3041 fps | 99.2% |
| Winchester 748 | <<locked>> | 88% | 52,823 psi | 85% | 3107 fps | 99.9% |
| Winchester StaBALL Match | <<locked>> | 92% | 55,564 psi | 90% | 3136 fps | 99.6% |
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% | 42,583 psi | 69% | 2818 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 46,485 psi | 75% | 2927 fps | 99.9% |
| Accurate 2495 | <<locked>> | 80% | 35,215 psi | 57% | 2717 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 40,045 psi | 65% | 2844 fps | 99.1% |
| Accurate 2520 | <<locked>> | 80% | 40,045 psi | 65% | 2844 fps | 99.1% |
| Accurate 4064 | <<locked>> | 80% | 33,301 psi | 54% | 2694 fps | 98.5% |
| Accurate 4350 | <<locked>> | 96% | 41,452 psi | 67% | 2933 fps | 95.4% |
| Accurate LT-30 | <<locked>> | 80% | 48,356 psi | 78% | 2838 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 48,718 psi | 79% | 2858 fps | 99.8% |
| ADI AR 2206H | <<locked>> | 80% | 39,001 psi | 63% | 2812 fps | 96.1% |
| ADI AR 2208 | <<locked>> | 86% | 40,277 psi | 65% | 2818 fps | 95.7% |
| ADI AR 2219 | <<locked>> | 80% | 51,111 psi | 82% | 3028 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 80% | 40,988 psi | 66% | 2828 fps | 97.9% |
| Alliant AR-Comp | <<locked>> | 80% | 40,132 psi | 65% | 2841 fps | 100% |
| Alliant Power Pro 2000-MR | 34.4 gr | 84% | 40,538 psi | 65% | 2943 fps | 95.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 34,679 psi | 56% | 2723 fps | 95.7% |
| Alliant Reloder-10x | <<locked>> | 80% | 48,095 psi | 78% | 2927 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 39,958 psi | 64% | 2851 fps | 95.8% |
| Alliant Reloder-16 | <<locked>> | 96% | 41,669 psi | 67% | 2943 fps | 95.4% |
| Alliant Reloder-17 | <<locked>> | 88% | 36,738 psi | 59% | 2851 fps | 95.6% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 50,140 psi | 81% | 2900 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 40,770 psi | 66% | 2864 fps | 95.4% |
| Bofors RP3 | <<locked>> | 82% | 34,171 psi | 55% | 2726 fps | 95.7% |
| Hodgdon Benchmark | <<locked>> | 80% | 43,294 psi | 70% | 2835 fps | 98.8% |
| Hodgdon BL-C2 | <<locked>> | 80% | 39,262 psi | 63% | 2841 fps | 98.1% |
| Hodgdon CFE223 | <<locked>> | 80% | 43,207 psi | 70% | 2982 fps | 96.7% |
| Hodgdon H322 | <<locked>> | 80% | 46,905 psi | 76% | 2956 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 47,601 psi | 77% | 2972 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 42,801 psi | 69% | 2900 fps | 95.2% |
| Hodgdon H4895 | <<locked>> | 80% | 39,291 psi | 63% | 2822 fps | 96.8% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 35,708 psi | 58% | 2766 fps | 95.3% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 35,346 psi | 57% | 2779 fps | 96% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,875 psi | 42% | 1706 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 37,811 psi | 61% | 2772 fps | 96.3% |
| IMR 3031 | <<locked>> | 80% | 38,377 psi | 62% | 2838 fps | 99.9% |
| IMR 4064 | <<locked>> | 84% | 39,523 psi | 64% | 2795 fps | 95.7% |
| IMR 4198 | <<locked>> | 80% | 48,718 psi | 79% | 2897 fps | 100% |
| IMR 4831 | <<locked>> | 96% | 39,711 psi | 64% | 2877 fps | 95% |
| IMR 4895 | <<locked>> | 80% | 35,708 psi | 58% | 2762 fps | 95% |
| IMR 8208 XBR | <<locked>> | 80% | 40,988 psi | 66% | 2828 fps | 97.9% |
| Lovex D073.5 | <<locked>> | 80% | 46,325 psi | 75% | 2927 fps | 99.4% |
| Lovex D073.6 | <<locked>> | 80% | 37,681 psi | 61% | 2795 fps | 98.6% |
| Lovex S060 | <<locked>> | 80% | 39,755 psi | 64% | 2759 fps | 96.4% |
| Lovex S062 | <<locked>> | 80% | 34,650 psi | 56% | 2694 fps | 96.2% |
| Lovex S065 | <<locked>> | 96% | 46,746 psi | 75% | 2946 fps | 95.2% |
| Norma 201 | <<locked>> | 80% | 38,493 psi | 62% | 2772 fps | 97.3% |
| Norma 202 | <<locked>> | 80% | 38,334 psi | 62% | 2785 fps | 99.2% |
| Norma 203B | <<locked>> | 82% | 36,724 psi | 59% | 2779 fps | 95.4% |
| Norma URP | <<locked>> | 96% | 41,785 psi | 67% | 2933 fps | 95.3% |
| Ramshot Big Game | <<locked>> | 84% | 38,870 psi | 63% | 2848 fps | 95.8% |
| Ramshot TAC | <<locked>> | 84% | 46,934 psi | 76% | 2943 fps | 95.5% |
| Ramshot Wild Boar | <<locked>> | 80% | 40,074 psi | 65% | 2841 fps | 96.4% |
| Ramshot X-Terminator | <<locked>> | 80% | 44,556 psi | 72% | 2881 fps | 97.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,092 psi | 42% | 1749 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 46,035 psi | 74% | 2930 fps | 99.6% |
| ReloadSwiss RS 50 | <<locked>> | 92% | 49,879 psi | 80% | 3005 fps | 95.2% |
| ReloadSwiss RS 52 | 32.5 gr | 82% | 38,580 psi | 62% | 2890 fps | 95.3% |
| ReloadSwiss RS 60 | 32.2 gr | 80% | 29,849 psi | 48% | 2664 fps | 95% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 41,539 psi | 67% | 2953 fps | 95% |
| ReloadSwiss RS 70 | <<locked>> | 98% | 45,339 psi | 73% | 3028 fps | 95.1% |
| Rottweil R 901 | <<locked>> | 80% | 42,119 psi | 68% | 2831 fps | 99.5% |
| Rottweil R 902 | <<locked>> | 80% | 36,376 psi | 59% | 2713 fps | 96.7% |
| Rottweil R 903 | <<locked>> | 84% | 34,040 psi | 55% | 2713 fps | 95.2% |
| Shooters World Long Rifle | <<locked>> | 96% | 46,746 psi | 75% | 2946 fps | 95.2% |
| Shooters World Match Rifle | <<locked>> | 80% | 37,681 psi | 61% | 2795 fps | 98.6% |
| Shooters World Precision | <<locked>> | 80% | 34,650 psi | 56% | 2694 fps | 96.2% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 48,733 psi | 79% | 2946 fps | 99% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 51,532 psi | 83% | 3035 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 37,797 psi | 61% | 2828 fps | 95.5% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 45,934 psi | 74% | 2874 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 44,817 psi | 72% | 2910 fps | 95.6% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 37,550 psi | 61% | 2772 fps | 95.6% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 40,074 psi | 65% | 2743 fps | 99.4% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 32,967 psi | 53% | 2592 fps | 98.9% |
| Somchem S321 | <<locked>> | 80% | 44,338 psi | 72% | 2917 fps | 98.8% |
| Somchem S335 | <<locked>> | 80% | 39,581 psi | 64% | 2746 fps | 99.7% |
| Somchem S341 | <<locked>> | 80% | 38,899 psi | 63% | 2792 fps | 95.9% |
| Somchem S355 | <<locked>> | 84% | 35,302 psi | 57% | 2730 fps | 95.4% |
| Somchem S365 | <<locked>> | 92% | 32,851 psi | 53% | 2756 fps | 95.8% |
| Vihtavuori N130 | <<locked>> | 80% | 45,397 psi | 73% | 2828 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 40,205 psi | 65% | 2749 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 32,938 psi | 53% | 2638 fps | 99.6% |
| Vihtavuori N140 | <<locked>> | 80% | 36,303 psi | 59% | 2717 fps | 99.1% |
| Vihtavuori N150 | <<locked>> | 82% | 31,459 psi | 51% | 2608 fps | 95.6% |
| Vihtavuori N160 | <<locked>> | 94% | 41,089 psi | 66% | 2877 fps | 95% |
| Vihtavuori N530 | <<locked>> | 80% | 41,176 psi | 66% | 2828 fps | 98% |
| Vihtavuori N540 | <<locked>> | 80% | 34,954 psi | 56% | 2697 fps | 98.4% |
| Vihtavuori N550 | <<locked>> | 96% | 43,120 psi | 70% | 2940 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 36,753 psi | 59% | 2743 fps | 95.8% |
| Winchester 748 | <<locked>> | 80% | 40,190 psi | 65% | 2871 fps | 98.5% |
| Winchester StaBALL Match | <<locked>> | 80% | 36,883 psi | 59% | 2776 fps | 96.1% |
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 91 powders for 6 mm GT loaded with the .243 | 85gr | Lehigh Defense Controlled Chaos. ReloadSwiss RS 60 delivers the highest muzzle velocity at 3,248 fps; across all powders the maximum-charge window runs from 1,903 fps to 3,248 fps. Accurate 4350 gives the best case fill at 100 %, and 91 of the 91 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (427 MPa), the top charges use 56–90 %, leaving at least 10 % headroom. The 85.0 gr projectile in 0.243" calls for a 1:8.5 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 | Lehigh Defense Controlled Chaos 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.