Load Specifications
Load data in caliber 6 mm GT with .243 | 95gr | Axe Copper BullNose bullet and 96 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.
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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>> | 88% | 55,347 psi | 89% | 2838 fps | 100% |
| Accurate 2460 | <<locked>> | 84% | 53,621 psi | 86% | 2858 fps | 100% |
| Accurate 2495 | <<locked>> | 92% | 52,533 psi | 85% | 2848 fps | 100% |
| Accurate 2520 | <<locked>> | 88% | 55,114 psi | 89% | 2917 fps | 100% |
| Accurate 4064 | <<locked>> | 96% | 55,825 psi | 90% | 2936 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 48,153 psi | 78% | 2890 fps | 97.8% |
| Accurate LT-30 | <<locked>> | 82% | 54,520 psi | 88% | 2779 fps | 100% |
| Accurate LT-32 | <<locked>> | 82% | 54,926 psi | 89% | 2802 fps | 100% |
| ADI AR 2206H | <<locked>> | 90% | 53,983 psi | 87% | 2923 fps | 99.4% |
| ADI AR 2208 | <<locked>> | 96% | 55,216 psi | 89% | 2920 fps | 99.2% |
| ADI AR 2219 | <<locked>> | 82% | 55,158 psi | 89% | 2897 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 88% | 53,301 psi | 86% | 2877 fps | 99.8% |
| Alliant AR-Comp | <<locked>> | 88% | 53,287 psi | 86% | 2864 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 84% | 54,897 psi | 89% | 2986 fps | 99.8% |
| Alliant Power Pro 2000-MR | <<locked>> | 92% | 53,563 psi | 86% | 3031 fps | 99% |
| Alliant Reloder- TS 15.5 | <<locked>> | 96% | 54,433 psi | 88% | 2940 fps | 99.8% |
| Alliant Reloder-10x | <<locked>> | 84% | 54,897 psi | 89% | 2841 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 94% | 55,492 psi | 90% | 2966 fps | 99.3% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 47,674 psi | 77% | 2900 fps | 97.9% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 54,926 psi | 89% | 3054 fps | 99.9% |
| Baschieri & Pellagri 106 | <<locked>> | 82% | 53,693 psi | 87% | 2772 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 90% | 53,969 psi | 87% | 2936 fps | 98.8% |
| Bofors RP3 | <<locked>> | 96% | 54,679 psi | 88% | 2953 fps | 99.9% |
| Bofors RP7ᴾ | <<locked>> | 100% | 55,448 psi | 89% | 2910 fps | 95.7% |
| Hodgdon Benchmark | <<locked>> | 88% | 55,738 psi | 90% | 2871 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 90% | 55,753 psi | 90% | 2959 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 86% | 54,085 psi | 87% | 3002 fps | 99.2% |
| Hodgdon H322 | <<locked>> | 84% | 54,186 psi | 87% | 2884 fps | 100% |
| Hodgdon H335 | <<locked>> | 84% | 55,419 psi | 89% | 2913 fps | 100% |
| Hodgdon H380 | <<locked>> | 94% | 52,881 psi | 85% | 2910 fps | 98.1% |
| Hodgdon H4895 | <<locked>> | 90% | 54,447 psi | 88% | 2933 fps | 99.7% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 43,511 psi | 70% | 2776 fps | 98.4% |
| Hodgdon LEVERevolution | <<locked>> | 92% | 53,330 psi | 86% | 2963 fps | 99.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,824 psi | 56% | 1768 fps | 100% |
| Hodgdon VARGET | <<locked>> | 92% | 55,854 psi | 90% | 2936 fps | 99.8% |
| IMR 3031 | <<locked>> | 90% | 54,215 psi | 87% | 2930 fps | 100% |
| IMR 4064 | <<locked>> | 94% | 54,665 psi | 88% | 2904 fps | 99.2% |
| IMR 4166 Enduron | <<locked>> | 92% | 55,390 psi | 89% | 2881 fps | 96.3% |
| IMR 4198 | <<locked>> | 84% | 55,100 psi | 89% | 2802 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 98% | 54,520 psi | 88% | 2900 fps | 96.1% |
| IMR 4831ᴾ | <<locked>> | 100% | 46,021 psi | 74% | 2835 fps | 97.4% |
| IMR 4895 | <<locked>> | 92% | 53,461 psi | 86% | 2946 fps | 99.5% |
| IMR 8208 XBR | <<locked>> | 88% | 53,301 psi | 86% | 2877 fps | 99.8% |
| Lovex D073.5 | <<locked>> | 84% | 53,592 psi | 86% | 2867 fps | 100% |
| Lovex D073.6 | <<locked>> | 90% | 53,272 psi | 86% | 2900 fps | 100% |
| Lovex S060 | <<locked>> | 90% | 54,433 psi | 88% | 2858 fps | 99.5% |
| Lovex S062 | <<locked>> | 94% | 54,302 psi | 88% | 2904 fps | 99.9% |
| Lovex S065ᴾ | <<locked>> | 100% | 53,040 psi | 86% | 2884 fps | 97.3% |
| Norma 201 | <<locked>> | 92% | 56,101 psi | 90% | 2920 fps | 100% |
| Norma 202 | <<locked>> | 90% | 53,229 psi | 86% | 2877 fps | 100% |
| Norma 203B | <<locked>> | 94% | 54,636 psi | 88% | 2953 fps | 99.5% |
| Norma URPᴾ | <<locked>> | 100% | 47,819 psi | 77% | 2884 fps | 97.6% |
| Ramshot Big Game | <<locked>> | 94% | 54,694 psi | 88% | 2972 fps | 99.4% |
| Ramshot TAC | <<locked>> | 88% | 53,983 psi | 87% | 2890 fps | 97.6% |
| Ramshot Wild Boar | <<locked>> | 88% | 53,185 psi | 86% | 2913 fps | 99.3% |
| Ramshot X-Terminator | <<locked>> | 86% | 54,766 psi | 88% | 2884 fps | 99.4% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,041 psi | 57% | 1808 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 84% | 53,098 psi | 86% | 2867 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 94% | 53,432 psi | 86% | 2890 fps | 96.6% |
| ReloadSwiss RS 52 | <<locked>> | 92% | 55,288 psi | 89% | 3028 fps | 99.3% |
| ReloadSwiss RS 60 | <<locked>> | 98% | 55,100 psi | 89% | 3064 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 47,790 psi | 77% | 2910 fps | 97.4% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 48,747 psi | 79% | 2930 fps | 96.9% |
| Rottweil R 901 | <<locked>> | 88% | 54,186 psi | 87% | 2864 fps | 100% |
| Rottweil R 902 | <<locked>> | 92% | 53,417 psi | 86% | 2871 fps | 99.9% |
| Rottweil R 903 | <<locked>> | 98% | 54,607 psi | 88% | 2943 fps | 99.8% |
| Rottweil R 907ᴾ | <<locked>> | 100% | 55,448 psi | 89% | 2910 fps | 95.7% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 53,040 psi | 86% | 2884 fps | 97.3% |
| Shooters World Match Rifle | <<locked>> | 90% | 53,272 psi | 86% | 2900 fps | 100% |
| Shooters World Precision | <<locked>> | 94% | 54,302 psi | 88% | 2904 fps | 99.9% |
| Shooters World Tactical Rifle | <<locked>> | 82% | 52,823 psi | 85% | 2835 fps | 99.7% |
| SNPE Vectan SP 10 | <<locked>> | 82% | 55,796 psi | 90% | 2913 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 96% | 53,069 psi | 86% | 2953 fps | 99.3% |
| SNPE Vectan SP 3 | <<locked>> | 84% | 55,956 psi | 90% | 2864 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 90% | 55,767 psi | 90% | 2923 fps | 98.4% |
| SNPE Vectan SP 9 | <<locked>> | 92% | 55,941 psi | 90% | 2946 fps | 99.6% |
| SNPE Vectan Tubal 3000 | <<locked>> | 90% | 54,940 psi | 89% | 2822 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 96% | 54,534 psi | 88% | 2812 fps | 100% |
| SNPE Vectan Tubal 7000ᴾ | <<locked>> | 100% | 53,896 psi | 87% | 2838 fps | 96% |
| Somchem S321 | <<locked>> | 86% | 54,418 psi | 88% | 2913 fps | 100% |
| Somchem S335 | <<locked>> | 90% | 53,838 psi | 87% | 2815 fps | 100% |
| Somchem S341 | <<locked>> | 90% | 55,158 psi | 89% | 2917 fps | 99.5% |
| Somchem S355 | <<locked>> | 98% | 55,042 psi | 89% | 2940 fps | 99.7% |
| Somchem S365ᴾ | <<locked>> | 100% | 42,656 psi | 69% | 2831 fps | 99.3% |
| Vihtavuori N130 | <<locked>> | 86% | 54,984 psi | 89% | 2792 fps | 100% |
| Vihtavuori N133 | <<locked>> | 90% | 54,926 psi | 89% | 2805 fps | 100% |
| Vihtavuori N135 | <<locked>> | 94% | 55,666 psi | 90% | 2884 fps | 100% |
| Vihtavuori N140 | <<locked>> | 92% | 53,809 psi | 87% | 2858 fps | 100% |
| Vihtavuori N150 | <<locked>> | 98% | 53,287 psi | 86% | 2874 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 50,473 psi | 81% | 2887 fps | 98% |
| Vihtavuori N530 | <<locked>> | 88% | 54,114 psi | 87% | 2884 fps | 99.9% |
| Vihtavuori N540 | <<locked>> | 94% | 55,492 psi | 90% | 2900 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 49,603 psi | 80% | 2890 fps | 97.7% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 51,547 psi | 83% | 2871 fps | 99.6% |
| Winchester 748 | <<locked>> | 88% | 53,287 psi | 86% | 2927 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 92% | 55,651 psi | 90% | 2953 fps | 99.8% |
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% | 42,888 psi | 69% | 2644 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 46,862 psi | 76% | 2753 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 35,723 psi | 58% | 2562 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 41,901 psi | 68% | 2700 fps | 99.6% |
| Accurate 4064 | <<locked>> | 80% | 33,750 psi | 54% | 2543 fps | 99.1% |
| Accurate 4350 | <<locked>> | 94% | 39,117 psi | 63% | 2720 fps | 95.5% |
| Accurate LT-30 | <<locked>> | 80% | 51,184 psi | 83% | 2730 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 51,576 psi | 83% | 2753 fps | 100% |
| ADI AR 2206H | <<locked>> | 80% | 39,639 psi | 64% | 2654 fps | 97% |
| ADI AR 2208 | <<locked>> | 84% | 38,072 psi | 61% | 2605 fps | 95.7% |
| ADI AR 2219 | <<locked>> | 80% | 51,764 psi | 83% | 2848 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 80% | 41,626 psi | 67% | 2671 fps | 98.6% |
| Alliant AR-Comp | <<locked>> | 80% | 41,002 psi | 66% | 2677 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 48,269 psi | 78% | 2874 fps | 99.2% |
| Alliant Power Pro 2000-MR | 31.1 gr | 82% | 38,159 psi | 62% | 2717 fps | 95.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 32,779 psi | 53% | 2516 fps | 95.8% |
| Alliant Reloder-10x | <<locked>> | 80% | 48,747 psi | 79% | 2753 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 35,476 psi | 57% | 2582 fps | 95% |
| Alliant Reloder-16 | <<locked>> | 94% | 39,595 psi | 64% | 2730 fps | 95.5% |
| Alliant Reloder-17 | <<locked>> | 86% | 34,548 psi | 56% | 2638 fps | 95.6% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 50,256 psi | 81% | 2723 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 38,261 psi | 62% | 2644 fps | 95.3% |
| Bofors RP3 | <<locked>> | 80% | 32,198 psi | 52% | 2516 fps | 95.7% |
| Bofors RP7 | <<locked>> | 98% | 52,127 psi | 84% | 2858 fps | 95% |
| Hodgdon Benchmark | <<locked>> | 80% | 43,381 psi | 70% | 2664 fps | 99.2% |
| Hodgdon BL-C2 | <<locked>> | 80% | 39,668 psi | 64% | 2680 fps | 98.7% |
| Hodgdon CFE223 | <<locked>> | 80% | 43,845 psi | 71% | 2822 fps | 97.5% |
| Hodgdon H322 | <<locked>> | 80% | 47,645 psi | 77% | 2785 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 48,095 psi | 78% | 2799 fps | 100% |
| Hodgdon H380 | <<locked>> | 86% | 40,669 psi | 66% | 2687 fps | 95.3% |
| Hodgdon H4895 | <<locked>> | 80% | 39,900 psi | 64% | 2667 fps | 97.6% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 34,026 psi | 55% | 2566 fps | 95.5% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 35,882 psi | 58% | 2628 fps | 97% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,875 psi | 42% | 1581 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 38,377 psi | 62% | 2618 fps | 97.1% |
| IMR 3031 | <<locked>> | 80% | 38,827 psi | 63% | 2671 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 35,157 psi | 57% | 2530 fps | 95% |
| IMR 4166 Enduron | <<locked>> | 90% | 52,098 psi | 84% | 2828 fps | 95.6% |
| IMR 4198 | <<locked>> | 80% | 48,878 psi | 79% | 2713 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 96% | 51,314 psi | 83% | 2844 fps | 95.3% |
| IMR 4831 | <<locked>> | 94% | 37,550 psi | 61% | 2664 fps | 95.1% |
| IMR 4895 | <<locked>> | 80% | 36,303 psi | 59% | 2615 fps | 96.1% |
| IMR 8208 XBR | <<locked>> | 80% | 41,626 psi | 67% | 2671 fps | 98.6% |
| Lovex D073.5 | <<locked>> | 80% | 46,891 psi | 76% | 2762 fps | 99.7% |
| Lovex D073.6 | <<locked>> | 80% | 37,869 psi | 61% | 2631 fps | 99.1% |
| Lovex S060 | <<locked>> | 80% | 40,118 psi | 65% | 2598 fps | 97.1% |
| Lovex S062 | <<locked>> | 80% | 35,027 psi | 56% | 2539 fps | 97.1% |
| Lovex S065 | <<locked>> | 94% | 44,121 psi | 71% | 2726 fps | 95.2% |
| Norma 201 | <<locked>> | 80% | 38,899 psi | 63% | 2615 fps | 98.1% |
| Norma 202 | <<locked>> | 80% | 38,798 psi | 63% | 2625 fps | 99.6% |
| Norma 203B | <<locked>> | 80% | 34,867 psi | 56% | 2572 fps | 95.5% |
| Norma URP | <<locked>> | 94% | 39,494 psi | 64% | 2717 fps | 95.4% |
| Ramshot Big Game | <<locked>> | 82% | 36,637 psi | 59% | 2631 fps | 95.8% |
| Ramshot TAC | <<locked>> | 82% | 44,396 psi | 72% | 2723 fps | 95.5% |
| Ramshot Wild Boar | <<locked>> | 80% | 40,524 psi | 65% | 2684 fps | 97.2% |
| Ramshot X-Terminator | <<locked>> | 80% | 44,991 psi | 73% | 2717 fps | 98% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,150 psi | 42% | 1621 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 46,470 psi | 75% | 2759 fps | 99.8% |
| ReloadSwiss RS 50 | <<locked>> | 90% | 46,847 psi | 76% | 2776 fps | 95.1% |
| ReloadSwiss RS 52 | 29.4 gr | 80% | 36,521 psi | 59% | 2671 fps | 95.4% |
| ReloadSwiss RS 60 | 29.9 gr | 80% | 30,356 psi | 49% | 2530 fps | 96.4% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 39,088 psi | 63% | 2736 fps | 95% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 42,627 psi | 69% | 2805 fps | 95% |
| Rottweil R 901 | <<locked>> | 80% | 42,714 psi | 69% | 2671 fps | 99.8% |
| Rottweil R 902 | <<locked>> | 80% | 37,043 psi | 60% | 2566 fps | 97.6% |
| Rottweil R 903 | <<locked>> | 82% | 32,401 psi | 52% | 2513 fps | 95.4% |
| Rottweil R 907 | <<locked>> | 98% | 52,127 psi | 84% | 2858 fps | 95% |
| Shooters World Long Rifle | <<locked>> | 94% | 44,121 psi | 71% | 2726 fps | 95.2% |
| Shooters World Match Rifle | <<locked>> | 80% | 37,869 psi | 61% | 2631 fps | 99.1% |
| Shooters World Precision | <<locked>> | 80% | 35,027 psi | 56% | 2539 fps | 97.1% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 49,168 psi | 79% | 2776 fps | 99.4% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 52,054 psi | 84% | 2858 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 35,882 psi | 58% | 2618 fps | 95.6% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 49,153 psi | 79% | 2766 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 42,221 psi | 68% | 2687 fps | 95.6% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 38,043 psi | 61% | 2618 fps | 96.5% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 40,248 psi | 65% | 2579 fps | 99.7% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 33,112 psi | 53% | 2438 fps | 99.3% |
| SNPE Vectan Tubal 7000 | <<locked>> | 98% | 50,444 psi | 81% | 2785 fps | 95.3% |
| Somchem S321 | <<locked>> | 80% | 44,454 psi | 72% | 2746 fps | 99.2% |
| Somchem S335 | <<locked>> | 80% | 40,045 psi | 65% | 2585 fps | 99.9% |
| Somchem S341 | <<locked>> | 80% | 39,015 psi | 63% | 2631 fps | 96.7% |
| Somchem S355 | <<locked>> | 82% | 33,562 psi | 54% | 2526 fps | 95.6% |
| Somchem S365 | <<locked>> | 90% | 31,096 psi | 50% | 2552 fps | 95.9% |
| Vihtavuori N130 | <<locked>> | 80% | 45,585 psi | 74% | 2654 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 40,393 psi | 65% | 2579 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 35,752 psi | 58% | 2556 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 36,854 psi | 59% | 2562 fps | 99.5% |
| Vihtavuori N150 | <<locked>> | 80% | 29,805 psi | 48% | 2411 fps | 95.7% |
| Vihtavuori N160 | <<locked>> | 92% | 39,059 psi | 63% | 2671 fps | 95.1% |
| Vihtavuori N530 | <<locked>> | 80% | 41,495 psi | 67% | 2664 fps | 98.6% |
| Vihtavuori N540 | <<locked>> | 80% | 35,360 psi | 57% | 2546 fps | 99% |
| Vihtavuori N550 | <<locked>> | 94% | 40,712 psi | 66% | 2723 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 34,650 psi | 56% | 2536 fps | 95.8% |
| Winchester 748 | <<locked>> | 80% | 40,524 psi | 65% | 2703 fps | 99.1% |
| Winchester StaBALL Match | <<locked>> | 80% | 37,188 psi | 60% | 2618 fps | 96.9% |
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 | Axe Copper BullNose. ReloadSwiss RS 60 delivers the highest muzzle velocity at 3,064 fps; across all powders the maximum-charge window runs from 1,768 fps to 3,064 fps. Accurate 4350 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 1:8.5 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 | 95gr | Axe Copper BullNose 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.