Load Specifications
Load data in caliber 6 mm GT with .243 | 95gr | Nosler Ballistic Tip Hunting bullet and 97 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.
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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% | 52,750 psi | 85% | 2808 fps | 100% |
| Accurate 2460 | <<locked>> | 84% | 54,331 psi | 88% | 2877 fps | 100% |
| Accurate 2495 | <<locked>> | 92% | 53,867 psi | 87% | 2871 fps | 100% |
| Accurate 2520 | <<locked>> | 86% | 52,446 psi | 85% | 2884 fps | 100% |
| Accurate 4064 | <<locked>> | 94% | 53,635 psi | 87% | 2913 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 49,168 psi | 79% | 2913 fps | 98.1% |
| Accurate LT-30 | <<locked>> | 82% | 55,288 psi | 89% | 2795 fps | 100% |
| Accurate LT-32 | <<locked>> | 82% | 55,695 psi | 90% | 2822 fps | 100% |
| ADI AR 2206H | <<locked>> | 90% | 55,085 psi | 89% | 2946 fps | 99.6% |
| ADI AR 2208 | <<locked>> | 94% | 52,475 psi | 85% | 2887 fps | 98.9% |
| ADI Benchmark 8208 | <<locked>> | 88% | 54,433 psi | 88% | 2904 fps | 99.9% |
| Alliant AR-Comp | <<locked>> | 88% | 54,201 psi | 87% | 2881 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 84% | 55,811 psi | 90% | 3009 fps | 99.9% |
| Alliant Power Pro 2000-MR | <<locked>> | 92% | 54,534 psi | 88% | 3058 fps | 99.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 96% | 55,477 psi | 89% | 2963 fps | 99.9% |
| Alliant Reloder-10x | <<locked>> | 84% | 55,738 psi | 90% | 2861 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 92% | 52,794 psi | 85% | 2930 fps | 99.1% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 48,544 psi | 78% | 2923 fps | 98.2% |
| Alliant Reloder-17 | <<locked>> | 98% | 52,431 psi | 85% | 3022 fps | 99.7% |
| Baschieri & Pellagri 106 | <<locked>> | 82% | 54,708 psi | 88% | 2795 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 90% | 54,969 psi | 89% | 2959 fps | 99% |
| Bofors RP3 | <<locked>> | 96% | 55,811 psi | 90% | 2976 fps | 99.9% |
| Hodgdon Benchmark | <<locked>> | 86% | 53,156 psi | 86% | 2841 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 88% | 53,461 psi | 86% | 2933 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 86% | 55,274 psi | 89% | 3031 fps | 99.4% |
| Hodgdon H322 | <<locked>> | 84% | 55,027 psi | 89% | 2904 fps | 100% |
| Hodgdon H335 | <<locked>> | 84% | 56,101 psi | 90% | 2927 fps | 100% |
| Hodgdon H380 | <<locked>> | 94% | 53,925 psi | 87% | 2936 fps | 98.3% |
| Hodgdon H414ᴾ | <<locked>> | 100% | 52,852 psi | 85% | 2972 fps | 96.2% |
| Hodgdon H4895 | <<locked>> | 90% | 55,608 psi | 90% | 2959 fps | 99.8% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 44,367 psi | 72% | 2799 fps | 98.6% |
| Hodgdon LEVERevolution | <<locked>> | 92% | 54,447 psi | 88% | 2986 fps | 99.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,882 psi | 56% | 1778 fps | 100% |
| Hodgdon VARGET | <<locked>> | 90% | 53,606 psi | 86% | 2910 fps | 99.7% |
| IMR 3031 | <<locked>> | 90% | 55,013 psi | 89% | 2946 fps | 100% |
| IMR 4064 | <<locked>> | 94% | 55,259 psi | 89% | 2920 fps | 99.4% |
| IMR 4166 Enduron | <<locked>> | 92% | 55,883 psi | 90% | 2897 fps | 96.6% |
| IMR 4198 | <<locked>> | 84% | 56,014 psi | 90% | 2822 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 98% | 55,434 psi | 89% | 2923 fps | 96.4% |
| IMR 4831ᴾ | <<locked>> | 100% | 46,992 psi | 76% | 2858 fps | 97.7% |
| IMR 4895 | <<locked>> | 92% | 54,099 psi | 87% | 2963 fps | 99.6% |
| IMR 8208 XBR | <<locked>> | 88% | 54,433 psi | 88% | 2904 fps | 99.9% |
| Lovex D073.5 | <<locked>> | 84% | 54,244 psi | 87% | 2884 fps | 100% |
| Lovex D073.6 | <<locked>> | 90% | 54,476 psi | 88% | 2927 fps | 100% |
| Lovex S060 | <<locked>> | 90% | 55,042 psi | 89% | 2874 fps | 99.6% |
| Lovex S062 | <<locked>> | 94% | 54,969 psi | 89% | 2920 fps | 100% |
| Lovex S065ᴾ | <<locked>> | 100% | 53,969 psi | 87% | 2907 fps | 97.6% |
| Lovex S070ᴾ | <<locked>> | 100% | 51,401 psi | 83% | 2884 fps | 96% |
| Norma 201 | <<locked>> | 90% | 53,867 psi | 87% | 2894 fps | 99.9% |
| Norma 202 | <<locked>> | 90% | 54,418 psi | 88% | 2904 fps | 100% |
| Norma 203B | <<locked>> | 94% | 55,259 psi | 89% | 2969 fps | 99.6% |
| Norma URPᴾ | <<locked>> | 100% | 48,820 psi | 79% | 2907 fps | 97.9% |
| Ramshot Big Game | <<locked>> | 92% | 52,417 psi | 85% | 2943 fps | 99.3% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 48,153 psi | 78% | 2897 fps | 96% |
| Ramshot TAC | <<locked>> | 88% | 54,955 psi | 89% | 2917 fps | 97.9% |
| Ramshot Wild Boar | <<locked>> | 88% | 54,259 psi | 88% | 2936 fps | 99.5% |
| Ramshot X-Terminator | <<locked>> | 86% | 55,288 psi | 89% | 2900 fps | 99.5% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,099 psi | 57% | 1818 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 84% | 53,795 psi | 87% | 2884 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 94% | 54,360 psi | 88% | 2913 fps | 97% |
| ReloadSwiss RS 52 | <<locked>> | 90% | 52,997 psi | 85% | 2999 fps | 99.1% |
| ReloadSwiss RS 60 | <<locked>> | 98% | 55,985 psi | 90% | 3084 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 49,139 psi | 79% | 2940 fps | 97.8% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 49,850 psi | 80% | 2959 fps | 97.3% |
| Rottweil R 901 | <<locked>> | 88% | 54,998 psi | 89% | 2881 fps | 100% |
| Rottweil R 902 | <<locked>> | 92% | 54,128 psi | 87% | 2887 fps | 99.9% |
| Rottweil R 903 | <<locked>> | 98% | 55,724 psi | 90% | 2966 fps | 99.9% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 53,969 psi | 87% | 2907 fps | 97.6% |
| Shooters World Match Rifle | <<locked>> | 90% | 54,476 psi | 88% | 2927 fps | 100% |
| Shooters World Precision | <<locked>> | 94% | 54,969 psi | 89% | 2920 fps | 100% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 51,401 psi | 83% | 2884 fps | 96% |
| Shooters World Tactical Rifle | <<locked>> | 82% | 53,432 psi | 86% | 2851 fps | 99.8% |
| SNPE Vectan SP 11 | <<locked>> | 96% | 54,041 psi | 87% | 2976 fps | 99.5% |
| SNPE Vectan SP 3 | <<locked>> | 82% | 53,388 psi | 86% | 2838 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 88% | 52,924 psi | 85% | 2887 fps | 98.1% |
| SNPE Vectan SP 9 | <<locked>> | 90% | 53,664 psi | 87% | 2917 fps | 99.5% |
| SNPE Vectan Tubal 3000 | <<locked>> | 90% | 55,680 psi | 90% | 2838 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 96% | 55,666 psi | 90% | 2835 fps | 100% |
| SNPE Vectan Tubal 7000ᴾ | <<locked>> | 100% | 54,839 psi | 88% | 2861 fps | 96.3% |
| Somchem S321 | <<locked>> | 86% | 55,521 psi | 90% | 2936 fps | 100% |
| Somchem S335 | <<locked>> | 90% | 54,969 psi | 89% | 2838 fps | 100% |
| Somchem S341 | <<locked>> | 88% | 52,402 psi | 85% | 2881 fps | 99.3% |
| Somchem S355 | <<locked>> | 96% | 52,765 psi | 85% | 2913 fps | 99.6% |
| Somchem S365ᴾ | <<locked>> | 100% | 43,526 psi | 70% | 2854 fps | 99.5% |
| Vihtavuori N130 | <<locked>> | 86% | 55,767 psi | 90% | 2808 fps | 100% |
| Vihtavuori N133 | <<locked>> | 90% | 55,680 psi | 90% | 2825 fps | 100% |
| Vihtavuori N135 | <<locked>> | 92% | 53,417 psi | 86% | 2858 fps | 100% |
| Vihtavuori N140 | <<locked>> | 92% | 54,926 psi | 89% | 2881 fps | 100% |
| Vihtavuori N150 | <<locked>> | 98% | 54,273 psi | 88% | 2897 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 51,430 psi | 83% | 2907 fps | 98.3% |
| Vihtavuori N530 | <<locked>> | 88% | 54,766 psi | 88% | 2900 fps | 99.9% |
| Vihtavuori N540 | <<locked>> | 92% | 52,721 psi | 85% | 2871 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 50,546 psi | 82% | 2913 fps | 98% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 52,663 psi | 85% | 2897 fps | 99.7% |
| Winchester 748 | <<locked>> | 88% | 54,433 psi | 88% | 2949 fps | 100% |
| Winchester 760ᴾ | <<locked>> | 100% | 52,852 psi | 85% | 2972 fps | 96.2% |
| Winchester StaBALL Match | <<locked>> | 90% | 53,287 psi | 86% | 2927 fps | 99.7% |
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% | 43,685 psi | 70% | 2667 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 47,587 psi | 77% | 2772 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 36,143 psi | 58% | 2572 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 43,018 psi | 69% | 2726 fps | 99.8% |
| Accurate 4064 | <<locked>> | 80% | 34,171 psi | 55% | 2556 fps | 99.2% |
| Accurate 4350 | <<locked>> | 92% | 37,159 psi | 60% | 2680 fps | 95% |
| Accurate LT-30 | <<locked>> | 80% | 52,011 psi | 84% | 2749 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 52,373 psi | 84% | 2772 fps | 100% |
| ADI AR 2206H | <<locked>> | 80% | 40,277 psi | 65% | 2677 fps | 97.3% |
| ADI AR 2208 | <<locked>> | 82% | 36,376 psi | 59% | 2572 fps | 95.3% |
| ADI Benchmark 8208 | <<locked>> | 80% | 42,322 psi | 68% | 2694 fps | 98.8% |
| Alliant AR-Comp | <<locked>> | 80% | 41,510 psi | 67% | 2690 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 49,153 psi | 79% | 2900 fps | 99.4% |
| Alliant Power Pro 2000-MR | 31.6 gr | 82% | 38,682 psi | 62% | 2740 fps | 95.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 33,489 psi | 54% | 2539 fps | 96.2% |
| Alliant Reloder-10x | <<locked>> | 80% | 49,211 psi | 79% | 2766 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 36,143 psi | 58% | 2605 fps | 95.4% |
| Alliant Reloder-16 | <<locked>> | 92% | 38,058 psi | 61% | 2700 fps | 95.1% |
| Alliant Reloder-17 | <<locked>> | 84% | 32,953 psi | 53% | 2598 fps | 95% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 51,227 psi | 83% | 2746 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 39,204 psi | 63% | 2671 fps | 95.8% |
| Bofors RP3 | <<locked>> | 80% | 32,866 psi | 53% | 2539 fps | 96.1% |
| Hodgdon Benchmark | <<locked>> | 80% | 44,063 psi | 71% | 2684 fps | 99.4% |
| Hodgdon BL-C2 | <<locked>> | 80% | 40,669 psi | 66% | 2707 fps | 98.9% |
| Hodgdon CFE223 | <<locked>> | 80% | 44,556 psi | 72% | 2844 fps | 97.8% |
| Hodgdon H322 | <<locked>> | 80% | 47,993 psi | 77% | 2795 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 49,211 psi | 79% | 2825 fps | 100% |
| Hodgdon H380 | <<locked>> | 86% | 41,263 psi | 67% | 2707 fps | 95.6% |
| Hodgdon H414 | <<locked>> | 98% | 49,255 psi | 79% | 2910 fps | 95.3% |
| Hodgdon H4895 | <<locked>> | 80% | 40,625 psi | 66% | 2690 fps | 97.9% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 32,445 psi | 52% | 2530 fps | 95% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 36,521 psi | 59% | 2651 fps | 97.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,049 psi | 42% | 1591 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 39,044 psi | 63% | 2641 fps | 97.4% |
| IMR 3031 | <<locked>> | 80% | 39,668 psi | 64% | 2694 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 35,810 psi | 58% | 2552 fps | 95.4% |
| IMR 4166 Enduron | <<locked>> | 88% | 49,574 psi | 80% | 2792 fps | 95.2% |
| IMR 4198 | <<locked>> | 80% | 49,835 psi | 80% | 2733 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 96% | 52,170 psi | 84% | 2867 fps | 95.7% |
| IMR 4831 | <<locked>> | 94% | 38,435 psi | 62% | 2690 fps | 95.5% |
| IMR 4895 | <<locked>> | 80% | 36,999 psi | 60% | 2635 fps | 96.4% |
| IMR 8208 XBR | <<locked>> | 80% | 42,322 psi | 68% | 2694 fps | 98.8% |
| Lovex D073.5 | <<locked>> | 80% | 47,543 psi | 77% | 2779 fps | 99.8% |
| Lovex D073.6 | <<locked>> | 80% | 38,928 psi | 63% | 2657 fps | 99.3% |
| Lovex S060 | <<locked>> | 80% | 40,785 psi | 66% | 2621 fps | 97.4% |
| Lovex S062 | <<locked>> | 80% | 35,694 psi | 58% | 2562 fps | 97.4% |
| Lovex S065 | <<locked>> | 94% | 45,049 psi | 73% | 2753 fps | 95.7% |
| Lovex S070 | <<locked>> | 98% | 48,341 psi | 78% | 2831 fps | 95.2% |
| Norma 201 | <<locked>> | 80% | 39,291 psi | 63% | 2628 fps | 98.2% |
| Norma 202 | <<locked>> | 80% | 39,523 psi | 64% | 2644 fps | 99.7% |
| Norma 203B | <<locked>> | 80% | 35,549 psi | 57% | 2592 fps | 95.9% |
| Norma URP | <<locked>> | 92% | 37,927 psi | 61% | 2687 fps | 95% |
| Ramshot Big Game | <<locked>> | 80% | 34,983 psi | 56% | 2598 fps | 95.4% |
| Ramshot Hunter | <<locked>> | 98% | 45,295 psi | 73% | 2841 fps | 95.2% |
| Ramshot TAC | <<locked>> | 80% | 42,018 psi | 68% | 2680 fps | 95% |
| Ramshot Wild Boar | <<locked>> | 80% | 41,524 psi | 67% | 2710 fps | 97.5% |
| Ramshot X-Terminator | <<locked>> | 80% | 45,600 psi | 74% | 2736 fps | 98.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,339 psi | 42% | 1631 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 47,195 psi | 76% | 2776 fps | 99.9% |
| ReloadSwiss RS 50 | <<locked>> | 90% | 47,776 psi | 77% | 2802 fps | 95.5% |
| ReloadSwiss RS 52 | 29.9 gr | 80% | 37,188 psi | 60% | 2694 fps | 95.7% |
| ReloadSwiss RS 60 | 30.4 gr | 80% | 30,835 psi | 50% | 2552 fps | 96.8% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 39,900 psi | 64% | 2762 fps | 95.4% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 43,352 psi | 70% | 2828 fps | 95.5% |
| Rottweil R 901 | <<locked>> | 80% | 43,163 psi | 70% | 2684 fps | 99.9% |
| Rottweil R 902 | <<locked>> | 80% | 37,391 psi | 60% | 2579 fps | 97.8% |
| Rottweil R 903 | <<locked>> | 80% | 30,980 psi | 50% | 2480 fps | 95% |
| Shooters World Long Rifle | <<locked>> | 94% | 45,049 psi | 73% | 2753 fps | 95.7% |
| Shooters World Match Rifle | <<locked>> | 80% | 38,928 psi | 63% | 2657 fps | 99.3% |
| Shooters World Precision | <<locked>> | 80% | 35,694 psi | 58% | 2562 fps | 97.4% |
| Shooters World SW4350 | <<locked>> | 98% | 48,341 psi | 78% | 2831 fps | 95.2% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 50,256 psi | 81% | 2799 fps | 99.6% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 34,243 psi | 55% | 2585 fps | 95.2% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 50,111 psi | 81% | 2789 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 40,248 psi | 65% | 2654 fps | 95.1% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 38,682 psi | 62% | 2641 fps | 96.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 40,973 psi | 66% | 2598 fps | 99.8% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 33,765 psi | 54% | 2457 fps | 99.5% |
| SNPE Vectan Tubal 7000 | <<locked>> | 98% | 51,401 psi | 83% | 2808 fps | 95.6% |
| Somchem S321 | <<locked>> | 80% | 45,513 psi | 73% | 2772 fps | 99.4% |
| Somchem S335 | <<locked>> | 80% | 40,364 psi | 65% | 2598 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 39,987 psi | 64% | 2657 fps | 97.1% |
| Somchem S355 | <<locked>> | 80% | 31,821 psi | 51% | 2487 fps | 95% |
| Somchem S365 | <<locked>> | 88% | 29,689 psi | 48% | 2516 fps | 95.4% |
| Vihtavuori N130 | <<locked>> | 80% | 46,369 psi | 75% | 2674 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 41,133 psi | 66% | 2598 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 36,564 psi | 59% | 2579 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 37,507 psi | 60% | 2585 fps | 99.6% |
| Vihtavuori N150 | <<locked>> | 80% | 30,385 psi | 49% | 2431 fps | 96.1% |
| Vihtavuori N160 | <<locked>> | 92% | 39,595 psi | 64% | 2687 fps | 95.5% |
| Vihtavuori N530 | <<locked>> | 80% | 42,192 psi | 68% | 2687 fps | 98.8% |
| Vihtavuori N540 | <<locked>> | 80% | 35,955 psi | 58% | 2566 fps | 99.2% |
| Vihtavuori N550 | <<locked>> | 92% | 38,740 psi | 62% | 2687 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 33,040 psi | 53% | 2503 fps | 95.3% |
| Winchester 748 | <<locked>> | 80% | 41,263 psi | 67% | 2726 fps | 99.2% |
| Winchester 760 | <<locked>> | 98% | 49,676 psi | 80% | 2917 fps | 95.4% |
| Winchester StaBALL Match | <<locked>> | 80% | 38,130 psi | 61% | 2648 fps | 97.3% |
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 110 powders for 6 mm GT loaded with the .243 | 95gr | Nosler Ballistic Tip Hunting. ReloadSwiss RS 60 delivers the highest muzzle velocity at 3,084 fps; across all powders the maximum-charge window runs from 1,778 fps to 3,084 fps. Accurate 3100 gives the best case fill at 100 %, and 110 of the 110 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (427 MPa), the top charges use 49–90 %, leaving at least 10 % headroom. The 95.0 gr projectile in 0.243" calls for a 1:9.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate 4350, Alliant Reloder-16 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 | 95gr | Nosler Ballistic Tip Hunting they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate 3100, Alliant Reloder-26, Hodgdon H4350 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.