Load Specifications
Load data in caliber 6 mm GT with .243 | 90gr | Impala RNFP KO bullet and 91 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 60, Alliant Power Pro 2000-MR 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% | 53,983 psi | 87% | 2877 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 52,634 psi | 85% | 2900 fps | 100% |
| Accurate 2495 | <<locked>> | 90% | 52,910 psi | 85% | 2907 fps | 100% |
| Accurate 2520 | <<locked>> | 86% | 54,114 psi | 87% | 2963 fps | 100% |
| Accurate 4064 | <<locked>> | 94% | 55,637 psi | 90% | 2992 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 50,415 psi | 81% | 2982 fps | 97.7% |
| Accurate LT-30 | <<locked>> | 82% | 55,622 psi | 90% | 2858 fps | 100% |
| Accurate LT-32 | <<locked>> | 82% | 55,927 psi | 90% | 2881 fps | 100% |
| ADI AR 2206H | <<locked>> | 90% | 55,927 psi | 90% | 3012 fps | 99.3% |
| ADI AR 2208 | <<locked>> | 94% | 53,476 psi | 86% | 2953 fps | 98.6% |
| ADI Benchmark 8208 | <<locked>> | 88% | 55,085 psi | 89% | 2966 fps | 99.8% |
| Alliant AR-Comp | <<locked>> | 88% | 55,259 psi | 89% | 2956 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 82% | 53,156 psi | 86% | 3018 fps | 99.4% |
| Alliant Power Pro 2000-MR | <<locked>> | 92% | 54,998 psi | 89% | 3117 fps | 98.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 94% | 53,069 psi | 86% | 2979 fps | 99.6% |
| Alliant Reloder-10x | <<locked>> | 82% | 53,853 psi | 87% | 2887 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 92% | 53,606 psi | 86% | 2992 fps | 98.8% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 49,226 psi | 79% | 2982 fps | 97.6% |
| Alliant Reloder-17 | <<locked>> | 98% | 53,040 psi | 86% | 3081 fps | 99.5% |
| Baschieri & Pellagri 106 | <<locked>> | 82% | 55,158 psi | 89% | 2854 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 90% | 55,521 psi | 90% | 3018 fps | 98.6% |
| Bofors RP3 | <<locked>> | 94% | 53,635 psi | 87% | 2992 fps | 99.6% |
| Hodgdon Benchmark | <<locked>> | 86% | 53,882 psi | 87% | 2904 fps | 99.9% |
| Hodgdon BL-C2 | <<locked>> | 88% | 54,404 psi | 88% | 2999 fps | 99.9% |
| Hodgdon CFE223 | <<locked>> | 86% | 55,622 psi | 90% | 3091 fps | 99.1% |
| Hodgdon H322 | <<locked>> | 84% | 55,535 psi | 90% | 2966 fps | 100% |
| Hodgdon H335 | <<locked>> | 82% | 53,519 psi | 86% | 2946 fps | 100% |
| Hodgdon H380 | <<locked>> | 94% | 54,969 psi | 89% | 2999 fps | 97.9% |
| Hodgdon H4895 | <<locked>> | 88% | 53,243 psi | 86% | 2972 fps | 99.4% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 45,310 psi | 73% | 2861 fps | 98.2% |
| Hodgdon LEVERevolution | <<locked>> | 92% | 54,955 psi | 89% | 3051 fps | 99.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,172 psi | 57% | 1821 fps | 100% |
| Hodgdon VARGET | <<locked>> | 90% | 54,099 psi | 87% | 2969 fps | 99.4% |
| IMR 3031 | <<locked>> | 90% | 55,680 psi | 90% | 3015 fps | 100% |
| IMR 4064 | <<locked>> | 92% | 53,098 psi | 86% | 2936 fps | 98.7% |
| IMR 4198 | <<locked>> | 82% | 53,403 psi | 86% | 2841 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 98% | 55,927 psi | 90% | 2976 fps | 95.7% |
| IMR 4831ᴾ | <<locked>> | 100% | 47,993 psi | 77% | 2923 fps | 97.3% |
| IMR 4895 | <<locked>> | 92% | 54,911 psi | 89% | 3028 fps | 99.3% |
| IMR 8208 XBR | <<locked>> | 88% | 55,085 psi | 89% | 2966 fps | 99.8% |
| Lovex D073.5 | <<locked>> | 82% | 52,475 psi | 85% | 2907 fps | 99.9% |
| Lovex D073.6 | <<locked>> | 90% | 55,666 psi | 90% | 2995 fps | 100% |
| Lovex S060 | <<locked>> | 90% | 55,651 psi | 90% | 2933 fps | 99.3% |
| Lovex S062 | <<locked>> | 94% | 56,028 psi | 90% | 2989 fps | 99.9% |
| Lovex S065ᴾ | <<locked>> | 100% | 55,013 psi | 89% | 2969 fps | 97.1% |
| Norma 201 | <<locked>> | 90% | 55,172 psi | 89% | 2963 fps | 99.8% |
| Norma 202 | <<locked>> | 90% | 55,245 psi | 89% | 2969 fps | 100% |
| Norma 203B | <<locked>> | 92% | 52,852 psi | 85% | 2982 fps | 99% |
| Norma URPᴾ | <<locked>> | 100% | 49,559 psi | 80% | 2969 fps | 97.4% |
| Ramshot Big Game | <<locked>> | 92% | 52,968 psi | 85% | 3002 fps | 98.9% |
| Ramshot TAC | <<locked>> | 88% | 55,622 psi | 90% | 2976 fps | 97.4% |
| Ramshot Wild Boar | <<locked>> | 88% | 54,897 psi | 89% | 2999 fps | 99.2% |
| Ramshot X-Terminator | <<locked>> | 84% | 52,953 psi | 85% | 2910 fps | 98.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,897 psi | 58% | 1867 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 84% | 54,520 psi | 88% | 2949 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 94% | 55,129 psi | 89% | 2972 fps | 96.4% |
| ReloadSwiss RS 52 | <<locked>> | 90% | 53,505 psi | 86% | 3061 fps | 98.8% |
| ReloadSwiss RS 60 | <<locked>> | 96% | 53,214 psi | 86% | 3097 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 49,574 psi | 80% | 2995 fps | 97.2% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 50,647 psi | 82% | 3015 fps | 96.6% |
| Rottweil R 901 | <<locked>> | 86% | 53,635 psi | 87% | 2910 fps | 100% |
| Rottweil R 902 | <<locked>> | 92% | 55,419 psi | 89% | 2956 fps | 99.8% |
| Rottweil R 903 | <<locked>> | 96% | 53,505 psi | 86% | 2982 fps | 99.5% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 55,013 psi | 89% | 2969 fps | 97.1% |
| Shooters World Match Rifle | <<locked>> | 90% | 55,666 psi | 90% | 2995 fps | 100% |
| Shooters World Precision | <<locked>> | 94% | 56,028 psi | 90% | 2989 fps | 99.9% |
| Shooters World Tactical Rifle | <<locked>> | 82% | 54,607 psi | 88% | 2920 fps | 99.6% |
| SNPE Vectan SP 11 | <<locked>> | 96% | 54,621 psi | 88% | 3038 fps | 99.2% |
| SNPE Vectan SP 3 | <<locked>> | 82% | 53,882 psi | 87% | 2900 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 88% | 53,940 psi | 87% | 2949 fps | 97.6% |
| SNPE Vectan SP 9 | <<locked>> | 90% | 54,331 psi | 88% | 2979 fps | 99.2% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 53,621 psi | 86% | 2858 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 52,924 psi | 85% | 2851 fps | 100% |
| SNPE Vectan Tubal 7000ᴾ | <<locked>> | 100% | 55,709 psi | 90% | 2923 fps | 95.7% |
| Somchem S321 | <<locked>> | 84% | 53,200 psi | 86% | 2953 fps | 99.8% |
| Somchem S335 | <<locked>> | 90% | 55,985 psi | 90% | 2904 fps | 100% |
| Somchem S341 | <<locked>> | 88% | 53,084 psi | 86% | 2943 fps | 98.9% |
| Somchem S355 | <<locked>> | 96% | 53,809 psi | 87% | 2979 fps | 99.4% |
| Somchem S365ᴾ | <<locked>> | 100% | 44,585 psi | 72% | 2920 fps | 99.3% |
| Vihtavuori N130 | <<locked>> | 84% | 53,316 psi | 86% | 2831 fps | 100% |
| Vihtavuori N133 | <<locked>> | 88% | 53,505 psi | 86% | 2848 fps | 100% |
| Vihtavuori N135 | <<locked>> | 92% | 54,375 psi | 88% | 2930 fps | 100% |
| Vihtavuori N140 | <<locked>> | 92% | 55,622 psi | 90% | 2943 fps | 100% |
| Vihtavuori N150 | <<locked>> | 98% | 55,143 psi | 89% | 2959 fps | 99.9% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 52,098 psi | 84% | 2966 fps | 97.8% |
| Vihtavuori N530 | <<locked>> | 88% | 55,506 psi | 90% | 2963 fps | 99.8% |
| Vihtavuori N540 | <<locked>> | 92% | 54,070 psi | 87% | 2943 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 51,387 psi | 83% | 2976 fps | 97.5% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 53,345 psi | 86% | 2956 fps | 99.5% |
| Winchester 748 | <<locked>> | 88% | 55,013 psi | 89% | 3015 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 90% | 53,983 psi | 87% | 2989 fps | 99.5% |
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% | 45,585 psi | 74% | 2743 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 49,574 psi | 80% | 2851 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 39,218 psi | 63% | 2671 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 44,512 psi | 72% | 2802 fps | 99.7% |
| Accurate 4064 | <<locked>> | 80% | 36,941 psi | 60% | 2654 fps | 99.3% |
| Accurate 4350 | <<locked>> | 94% | 41,669 psi | 67% | 2818 fps | 95.6% |
| Accurate LT-30 | <<locked>> | 80% | 52,417 psi | 85% | 2808 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 52,779 psi | 85% | 2831 fps | 100% |
| ADI AR 2206H | <<locked>> | 80% | 41,539 psi | 67% | 2743 fps | 96.9% |
| ADI AR 2208 | <<locked>> | 84% | 40,030 psi | 65% | 2694 fps | 95.7% |
| ADI Benchmark 8208 | <<locked>> | 80% | 43,294 psi | 70% | 2756 fps | 98.4% |
| Alliant AR-Comp | <<locked>> | 80% | 42,917 psi | 69% | 2769 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 50,009 psi | 81% | 2963 fps | 99.1% |
| Alliant Power Pro 2000-MR | 31.5 gr | 82% | 40,030 psi | 65% | 2808 fps | 95.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 34,853 psi | 56% | 2612 fps | 95.9% |
| Alliant Reloder-10x | <<locked>> | 80% | 50,720 psi | 82% | 2841 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 37,521 psi | 61% | 2674 fps | 95.1% |
| Alliant Reloder-16 | <<locked>> | 94% | 41,394 psi | 67% | 2815 fps | 95.4% |
| Alliant Reloder-17 | <<locked>> | 86% | 36,622 psi | 59% | 2733 fps | 95.6% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 51,808 psi | 84% | 2805 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 40,234 psi | 65% | 2733 fps | 95.3% |
| Bofors RP3 | <<locked>> | 80% | 34,693 psi | 56% | 2618 fps | 96% |
| Hodgdon Benchmark | <<locked>> | 80% | 45,382 psi | 73% | 2753 fps | 99.2% |
| Hodgdon BL-C2 | <<locked>> | 80% | 41,974 psi | 68% | 2779 fps | 98.7% |
| Hodgdon CFE223 | <<locked>> | 80% | 45,339 psi | 73% | 2907 fps | 97.3% |
| Hodgdon H322 | <<locked>> | 80% | 49,153 psi | 79% | 2867 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 50,067 psi | 81% | 2890 fps | 100% |
| Hodgdon H380 | <<locked>> | 86% | 42,598 psi | 69% | 2772 fps | 95.2% |
| Hodgdon H4895 | <<locked>> | 80% | 41,814 psi | 67% | 2756 fps | 97.5% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 36,129 psi | 58% | 2657 fps | 95.6% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 37,666 psi | 61% | 2717 fps | 96.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,382 psi | 43% | 1627 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 40,030 psi | 65% | 2703 fps | 97% |
| IMR 3031 | <<locked>> | 80% | 40,727 psi | 66% | 2762 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 37,304 psi | 60% | 2625 fps | 95.1% |
| IMR 4198 | <<locked>> | 80% | 50,241 psi | 81% | 2795 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 96% | 52,837 psi | 85% | 2927 fps | 95% |
| IMR 4831 | <<locked>> | 94% | 39,711 psi | 64% | 2759 fps | 95.1% |
| IMR 4895 | <<locked>> | 80% | 38,305 psi | 62% | 2707 fps | 96.1% |
| IMR 8208 XBR | <<locked>> | 80% | 43,294 psi | 70% | 2756 fps | 98.4% |
| Lovex D073.5 | <<locked>> | 80% | 49,182 psi | 79% | 2851 fps | 99.7% |
| Lovex D073.6 | <<locked>> | 80% | 40,567 psi | 65% | 2733 fps | 99.2% |
| Lovex S060 | <<locked>> | 80% | 41,756 psi | 67% | 2680 fps | 97% |
| Lovex S062 | <<locked>> | 80% | 37,318 psi | 60% | 2635 fps | 97.2% |
| Lovex S065 | <<locked>> | 94% | 46,282 psi | 75% | 2815 fps | 95.1% |
| Norma 201 | <<locked>> | 80% | 41,278 psi | 67% | 2710 fps | 98.1% |
| Norma 202 | <<locked>> | 80% | 40,843 psi | 66% | 2717 fps | 99.6% |
| Norma 203B | <<locked>> | 80% | 36,927 psi | 60% | 2664 fps | 95.6% |
| Norma URP | <<locked>> | 94% | 41,553 psi | 67% | 2808 fps | 95.3% |
| Ramshot Big Game | <<locked>> | 82% | 38,653 psi | 62% | 2723 fps | 95.8% |
| Ramshot TAC | <<locked>> | 82% | 45,948 psi | 74% | 2802 fps | 95.3% |
| Ramshot Wild Boar | <<locked>> | 80% | 42,569 psi | 69% | 2776 fps | 97.1% |
| Ramshot X-Terminator | <<locked>> | 80% | 46,978 psi | 76% | 2805 fps | 97.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,760 psi | 43% | 1670 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 48,472 psi | 78% | 2848 fps | 99.8% |
| ReloadSwiss RS 50 | <<locked>> | 92% | 52,112 psi | 84% | 2923 fps | 95.7% |
| ReloadSwiss RS 52 | 29.8 gr | 80% | 38,740 psi | 62% | 2769 fps | 95.4% |
| ReloadSwiss RS 60 | 30.2 gr | 80% | 32,198 psi | 52% | 2621 fps | 96.5% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 43,656 psi | 70% | 2881 fps | 95.7% |
| ReloadSwiss RS 70 | <<locked>> | 98% | 47,384 psi | 76% | 2949 fps | 95.7% |
| Rottweil R 901 | <<locked>> | 80% | 45,498 psi | 73% | 2766 fps | 99.8% |
| Rottweil R 902 | <<locked>> | 80% | 39,465 psi | 64% | 2661 fps | 97.7% |
| Rottweil R 903 | <<locked>> | 82% | 34,911 psi | 56% | 2615 fps | 95.7% |
| Shooters World Long Rifle | <<locked>> | 94% | 46,282 psi | 75% | 2815 fps | 95.1% |
| Shooters World Match Rifle | <<locked>> | 80% | 40,567 psi | 65% | 2733 fps | 99.2% |
| Shooters World Precision | <<locked>> | 80% | 37,318 psi | 60% | 2635 fps | 97.2% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 51,126 psi | 82% | 2861 fps | 99.3% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 37,579 psi | 61% | 2703 fps | 95.6% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 50,720 psi | 82% | 2851 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 44,527 psi | 72% | 2782 fps | 95.5% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 40,118 psi | 65% | 2710 fps | 96.5% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 42,163 psi | 68% | 2664 fps | 99.7% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 34,998 psi | 56% | 2523 fps | 99.3% |
| SNPE Vectan Tubal 7000 | <<locked>> | 98% | 52,373 psi | 84% | 2871 fps | 95% |
| Somchem S321 | <<locked>> | 80% | 46,673 psi | 75% | 2838 fps | 99.2% |
| Somchem S335 | <<locked>> | 80% | 42,090 psi | 68% | 2674 fps | 99.9% |
| Somchem S341 | <<locked>> | 80% | 41,031 psi | 66% | 2720 fps | 96.7% |
| Somchem S355 | <<locked>> | 80% | 33,794 psi | 55% | 2572 fps | 95% |
| Somchem S365 | <<locked>> | 88% | 31,299 psi | 50% | 2592 fps | 95.2% |
| Vihtavuori N130 | <<locked>> | 80% | 47,413 psi | 76% | 2736 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 42,105 psi | 68% | 2664 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 38,000 psi | 61% | 2648 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 38,754 psi | 63% | 2651 fps | 99.5% |
| Vihtavuori N150 | <<locked>> | 80% | 31,966 psi | 52% | 2507 fps | 96% |
| Vihtavuori N160 | <<locked>> | 94% | 43,511 psi | 70% | 2812 fps | 95.8% |
| Vihtavuori N530 | <<locked>> | 80% | 43,294 psi | 70% | 2749 fps | 98.5% |
| Vihtavuori N540 | <<locked>> | 80% | 37,289 psi | 60% | 2635 fps | 99% |
| Vihtavuori N550 | <<locked>> | 94% | 42,714 psi | 69% | 2812 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 36,521 psi | 59% | 2625 fps | 95.8% |
| Winchester 748 | <<locked>> | 80% | 42,598 psi | 69% | 2799 fps | 99% |
| Winchester StaBALL Match | <<locked>> | 80% | 39,305 psi | 63% | 2713 fps | 97% |
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 | 90gr | Impala RNFP KO. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 3,117 fps; across all powders the maximum-charge window runs from 1,821 fps to 3,117 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 57–90 %, leaving at least 10 % headroom. The 90.0 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, Hodgdon Hybrid 100V 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. ReloadSwiss RS 60, Alliant Power Pro 2000-MR, ReloadSwiss RS 52 rank at the top here: for 6 mm GT with the .243 | 90gr | Impala RNFP KO 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.