Load Specifications
Load data in caliber 6 mm GT with .243 | 95gr | Barnes LRX BT 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 52 and Hodgdon LEVERevolution.
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% | 54,041 psi | 87% | 2831 fps | 100% |
| Accurate 2460 | <<locked>> | 86% | 56,086 psi | 90% | 2904 fps | 100% |
| Accurate 2495 | <<locked>> | 94% | 54,752 psi | 88% | 2890 fps | 100% |
| Accurate 2520 | <<locked>> | 88% | 54,230 psi | 87% | 2917 fps | 100% |
| Accurate 4064 | <<locked>> | 96% | 54,549 psi | 88% | 2933 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 47,079 psi | 76% | 2884 fps | 97.7% |
| Accurate LT-30 | <<locked>> | 82% | 54,186 psi | 87% | 2782 fps | 100% |
| Accurate LT-32 | <<locked>> | 82% | 54,607 psi | 88% | 2808 fps | 100% |
| ADI AR 2206H | <<locked>> | 90% | 53,301 psi | 86% | 2923 fps | 99.4% |
| ADI AR 2208 | <<locked>> | 96% | 54,592 psi | 88% | 2920 fps | 99.1% |
| ADI AR 2219 | <<locked>> | 82% | 54,679 psi | 88% | 2900 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 90% | 56,043 psi | 90% | 2930 fps | 100% |
| Alliant AR-Comp | <<locked>> | 88% | 52,634 psi | 85% | 2864 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 84% | 54,331 psi | 88% | 2989 fps | 99.8% |
| Alliant Power Pro 2000-MR | <<locked>> | 92% | 52,895 psi | 85% | 3031 fps | 99% |
| Alliant Reloder- TS 15.5 | <<locked>> | 96% | 53,635 psi | 87% | 2940 fps | 99.8% |
| Alliant Reloder-10x | <<locked>> | 84% | 54,273 psi | 88% | 2844 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 94% | 54,752 psi | 88% | 2963 fps | 99.3% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 46,963 psi | 76% | 2897 fps | 97.8% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 54,636 psi | 88% | 3061 fps | 99.9% |
| Baschieri & Pellagri 106 | <<locked>> | 82% | 53,185 psi | 86% | 2776 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 90% | 53,258 psi | 86% | 2936 fps | 98.8% |
| Bofors RP3 | <<locked>> | 96% | 54,259 psi | 88% | 2956 fps | 99.9% |
| Bofors RP7ᴾ | <<locked>> | 100% | 55,158 psi | 89% | 2913 fps | 95.7% |
| Hodgdon Benchmark | <<locked>> | 88% | 54,723 psi | 88% | 2864 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 90% | 55,419 psi | 89% | 2966 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 86% | 53,403 psi | 86% | 3002 fps | 99.2% |
| Hodgdon H322 | <<locked>> | 84% | 53,664 psi | 87% | 2887 fps | 100% |
| Hodgdon H335 | <<locked>> | 84% | 54,752 psi | 88% | 2913 fps | 100% |
| Hodgdon H380 | <<locked>> | 96% | 55,506 psi | 90% | 2963 fps | 98.5% |
| Hodgdon H4895 | <<locked>> | 90% | 53,766 psi | 87% | 2933 fps | 99.7% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 43,105 psi | 70% | 2776 fps | 98.3% |
| Hodgdon LEVERevolution | <<locked>> | 92% | 52,634 psi | 85% | 2963 fps | 99.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,548 psi | 56% | 1772 fps | 100% |
| Hodgdon VARGET | <<locked>> | 92% | 55,767 psi | 90% | 2943 fps | 99.8% |
| IMR 3031 | <<locked>> | 90% | 53,548 psi | 86% | 2927 fps | 100% |
| IMR 4064 | <<locked>> | 94% | 54,041 psi | 87% | 2904 fps | 99.2% |
| IMR 4166 Enduron | <<locked>> | 92% | 54,752 psi | 88% | 2881 fps | 96.3% |
| IMR 4198 | <<locked>> | 84% | 54,824 psi | 88% | 2808 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 98% | 53,882 psi | 87% | 2897 fps | 96% |
| IMR 4831ᴾ | <<locked>> | 100% | 45,092 psi | 73% | 2828 fps | 97.3% |
| IMR 4895 | <<locked>> | 92% | 52,721 psi | 85% | 2946 fps | 99.4% |
| IMR 8208 XBR | <<locked>> | 90% | 56,043 psi | 90% | 2930 fps | 100% |
| Lovex D073.5 | <<locked>> | 84% | 52,634 psi | 85% | 2867 fps | 100% |
| Lovex D073.6 | <<locked>> | 90% | 52,330 psi | 84% | 2897 fps | 100% |
| Lovex S060 | <<locked>> | 90% | 53,882 psi | 87% | 2858 fps | 99.5% |
| Lovex S062 | <<locked>> | 94% | 53,505 psi | 86% | 2904 fps | 99.9% |
| Lovex S065ᴾ | <<locked>> | 100% | 52,649 psi | 85% | 2887 fps | 97.3% |
| Norma 201 | <<locked>> | 92% | 55,245 psi | 89% | 2917 fps | 100% |
| Norma 202 | <<locked>> | 92% | 55,912 psi | 90% | 2927 fps | 100% |
| Norma 203B | <<locked>> | 94% | 53,838 psi | 87% | 2949 fps | 99.5% |
| Norma URPᴾ | <<locked>> | 100% | 47,036 psi | 76% | 2881 fps | 97.6% |
| Ramshot Big Game | <<locked>> | 94% | 54,447 psi | 88% | 2976 fps | 99.5% |
| Ramshot TAC | <<locked>> | 88% | 53,301 psi | 86% | 2890 fps | 97.6% |
| Ramshot Wild Boar | <<locked>> | 88% | 52,533 psi | 85% | 2913 fps | 99.3% |
| Ramshot X-Terminator | <<locked>> | 86% | 54,070 psi | 87% | 2884 fps | 99.4% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,693 psi | 56% | 1811 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 86% | 55,898 psi | 90% | 2917 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 94% | 52,649 psi | 85% | 2887 fps | 96.6% |
| ReloadSwiss RS 52 | <<locked>> | 92% | 54,578 psi | 88% | 3025 fps | 99.3% |
| ReloadSwiss RS 60 | <<locked>> | 98% | 54,288 psi | 88% | 3061 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 47,326 psi | 76% | 2910 fps | 97.4% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 48,298 psi | 78% | 2930 fps | 96.9% |
| Rottweil R 901 | <<locked>> | 90% | 56,086 psi | 90% | 2904 fps | 100% |
| Rottweil R 902 | <<locked>> | 94% | 55,999 psi | 90% | 2920 fps | 100% |
| Rottweil R 903 | <<locked>> | 98% | 53,577 psi | 86% | 2940 fps | 99.8% |
| Rottweil R 907ᴾ | <<locked>> | 100% | 55,158 psi | 89% | 2913 fps | 95.7% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 52,649 psi | 85% | 2887 fps | 97.3% |
| Shooters World Match Rifle | <<locked>> | 90% | 52,330 psi | 84% | 2897 fps | 100% |
| Shooters World Precision | <<locked>> | 94% | 53,505 psi | 86% | 2904 fps | 99.9% |
| Shooters World Tactical Rifle | <<locked>> | 84% | 56,086 psi | 90% | 2890 fps | 99.9% |
| SNPE Vectan SP 10 | <<locked>> | 82% | 55,187 psi | 89% | 2913 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 96% | 52,301 psi | 84% | 2949 fps | 99.3% |
| SNPE Vectan SP 3 | <<locked>> | 84% | 55,056 psi | 89% | 2864 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 90% | 54,911 psi | 89% | 2920 fps | 98.3% |
| SNPE Vectan SP 9 | <<locked>> | 92% | 55,245 psi | 89% | 2946 fps | 99.6% |
| SNPE Vectan Tubal 3000 | <<locked>> | 90% | 54,346 psi | 88% | 2822 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 96% | 53,983 psi | 87% | 2815 fps | 100% |
| SNPE Vectan Tubal 7000ᴾ | <<locked>> | 100% | 53,026 psi | 86% | 2838 fps | 95.9% |
| Somchem S321 | <<locked>> | 86% | 54,128 psi | 87% | 2920 fps | 100% |
| Somchem S335 | <<locked>> | 90% | 53,098 psi | 86% | 2815 fps | 100% |
| Somchem S341 | <<locked>> | 90% | 54,433 psi | 88% | 2913 fps | 99.4% |
| Somchem S355 | <<locked>> | 98% | 54,650 psi | 88% | 2943 fps | 99.7% |
| Somchem S365ᴾ | <<locked>> | 100% | 41,771 psi | 67% | 2822 fps | 99.3% |
| Vihtavuori N130 | <<locked>> | 86% | 53,998 psi | 87% | 2789 fps | 100% |
| Vihtavuori N133 | <<locked>> | 90% | 54,433 psi | 88% | 2808 fps | 100% |
| Vihtavuori N135 | <<locked>> | 94% | 54,868 psi | 88% | 2881 fps | 100% |
| Vihtavuori N140 | <<locked>> | 92% | 53,127 psi | 86% | 2858 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 55,985 psi | 90% | 2923 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 49,661 psi | 80% | 2881 fps | 97.9% |
| Vihtavuori N530 | <<locked>> | 88% | 53,432 psi | 86% | 2884 fps | 99.9% |
| Vihtavuori N540 | <<locked>> | 94% | 54,708 psi | 88% | 2900 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 48,762 psi | 79% | 2884 fps | 97.6% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 51,184 psi | 83% | 2874 fps | 99.6% |
| Winchester 748 | <<locked>> | 88% | 52,605 psi | 85% | 2927 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 92% | 55,390 psi | 89% | 2959 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% | 42,105 psi | 68% | 2644 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 45,948 psi | 74% | 2749 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 34,156 psi | 55% | 2539 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 41,060 psi | 66% | 2697 fps | 99.6% |
| Accurate 4064 | <<locked>> | 80% | 32,314 psi | 52% | 2520 fps | 98.8% |
| Accurate 4350 | <<locked>> | 94% | 38,116 psi | 61% | 2707 fps | 95.3% |
| Accurate LT-30 | <<locked>> | 80% | 50,923 psi | 82% | 2736 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 51,300 psi | 83% | 2759 fps | 100% |
| ADI AR 2206H | <<locked>> | 80% | 38,580 psi | 62% | 2644 fps | 96.8% |
| ADI AR 2208 | <<locked>> | 84% | 37,478 psi | 60% | 2602 fps | 95.6% |
| ADI AR 2219 | <<locked>> | 80% | 51,227 psi | 83% | 2851 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 80% | 40,683 psi | 66% | 2664 fps | 98.4% |
| Alliant AR-Comp | <<locked>> | 80% | 40,001 psi | 65% | 2671 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 47,224 psi | 76% | 2867 fps | 99.1% |
| Alliant Power Pro 2000-MR | 31.4 gr | 82% | 37,507 psi | 60% | 2713 fps | 95.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 32,068 psi | 52% | 2510 fps | 95.6% |
| Alliant Reloder-10x | <<locked>> | 80% | 47,688 psi | 77% | 2746 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 37,086 psi | 60% | 2631 fps | 95.7% |
| Alliant Reloder-16 | <<locked>> | 94% | 38,928 psi | 63% | 2723 fps | 95.4% |
| Alliant Reloder-17 | <<locked>> | 86% | 33,808 psi | 55% | 2628 fps | 95.4% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 49,763 psi | 80% | 2726 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 37,666 psi | 61% | 2641 fps | 95.2% |
| Bofors RP3 | <<locked>> | 80% | 31,314 psi | 51% | 2507 fps | 95.5% |
| Bofors RP7 | <<locked>> | 98% | 51,779 psi | 84% | 2861 fps | 95% |
| Hodgdon Benchmark | <<locked>> | 80% | 42,859 psi | 69% | 2664 fps | 99.2% |
| Hodgdon BL-C2 | <<locked>> | 80% | 38,943 psi | 63% | 2677 fps | 98.6% |
| Hodgdon CFE223 | <<locked>> | 80% | 42,830 psi | 69% | 2812 fps | 97.4% |
| Hodgdon H322 | <<locked>> | 80% | 46,688 psi | 75% | 2779 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 47,427 psi | 76% | 2799 fps | 100% |
| Hodgdon H380 | <<locked>> | 86% | 39,842 psi | 64% | 2680 fps | 95.1% |
| Hodgdon H4895 | <<locked>> | 80% | 38,870 psi | 63% | 2657 fps | 97.4% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 33,286 psi | 54% | 2559 fps | 95.3% |
| Hodgdon LEVERevolution | 30 gr | 80% | 34,896 psi | 56% | 2615 fps | 96.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,657 psi | 41% | 1585 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 37,811 psi | 61% | 2618 fps | 97.1% |
| IMR 3031 | <<locked>> | 80% | 38,174 psi | 62% | 2671 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 36,869 psi | 59% | 2582 fps | 95.7% |
| IMR 4166 Enduron | <<locked>> | 90% | 51,503 psi | 83% | 2828 fps | 95.6% |
| IMR 4198 | <<locked>> | 80% | 48,617 psi | 78% | 2717 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 96% | 50,633 psi | 82% | 2844 fps | 95.3% |
| IMR 4831 | <<locked>> | 94% | 37,028 psi | 60% | 2664 fps | 95% |
| IMR 4895 | <<locked>> | 80% | 35,259 psi | 57% | 2598 fps | 95.8% |
| IMR 8208 XBR | <<locked>> | 80% | 40,683 psi | 66% | 2664 fps | 98.4% |
| Lovex D073.5 | <<locked>> | 80% | 45,498 psi | 73% | 2749 fps | 99.7% |
| Lovex D073.6 | <<locked>> | 80% | 36,999 psi | 60% | 2625 fps | 99% |
| Lovex S060 | <<locked>> | 80% | 39,581 psi | 64% | 2598 fps | 97.1% |
| Lovex S062 | <<locked>> | 80% | 34,243 psi | 55% | 2533 fps | 96.9% |
| Lovex S065 | <<locked>> | 94% | 43,265 psi | 70% | 2723 fps | 95.1% |
| Norma 201 | <<locked>> | 80% | 37,739 psi | 61% | 2602 fps | 97.9% |
| Norma 202 | <<locked>> | 80% | 38,116 psi | 61% | 2621 fps | 99.5% |
| Norma 203B | <<locked>> | 80% | 33,852 psi | 55% | 2556 fps | 95.2% |
| Norma URP | <<locked>> | 94% | 38,696 psi | 62% | 2710 fps | 95.2% |
| Ramshot Big Game | <<locked>> | 82% | 35,940 psi | 58% | 2625 fps | 95.7% |
| Ramshot TAC | <<locked>> | 82% | 43,743 psi | 71% | 2720 fps | 95.5% |
| Ramshot Wild Boar | <<locked>> | 80% | 39,871 psi | 64% | 2680 fps | 97.1% |
| Ramshot X-Terminator | <<locked>> | 80% | 44,367 psi | 72% | 2717 fps | 98% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,875 psi | 42% | 1624 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 45,876 psi | 74% | 2759 fps | 99.8% |
| ReloadSwiss RS 50 | <<locked>> | 90% | 46,093 psi | 74% | 2772 fps | 95% |
| ReloadSwiss RS 52 | 29.7 gr | 80% | 35,824 psi | 58% | 2664 fps | 95.2% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 29,646 psi | 48% | 2520 fps | 96.1% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 40,756 psi | 66% | 2782 fps | 95.7% |
| ReloadSwiss RS 70 | <<locked>> | 98% | 44,947 psi | 72% | 2864 fps | 95.9% |
| Rottweil R 901 | <<locked>> | 80% | 41,423 psi | 67% | 2657 fps | 99.7% |
| Rottweil R 902 | <<locked>> | 80% | 35,897 psi | 58% | 2552 fps | 97.3% |
| Rottweil R 903 | <<locked>> | 82% | 31,212 psi | 50% | 2497 fps | 95% |
| Rottweil R 907 | <<locked>> | 98% | 51,779 psi | 84% | 2861 fps | 95% |
| Shooters World Long Rifle | <<locked>> | 94% | 43,265 psi | 70% | 2723 fps | 95.1% |
| Shooters World Match Rifle | <<locked>> | 80% | 36,999 psi | 60% | 2625 fps | 99% |
| Shooters World Precision | <<locked>> | 80% | 34,243 psi | 55% | 2533 fps | 96.9% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 48,530 psi | 78% | 2772 fps | 99.4% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 51,416 psi | 83% | 2858 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 35,143 psi | 57% | 2612 fps | 95.5% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 48,747 psi | 79% | 2769 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 41,408 psi | 67% | 2684 fps | 95.4% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 37,420 psi | 60% | 2615 fps | 96.4% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 39,668 psi | 64% | 2575 fps | 99.7% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 32,547 psi | 52% | 2434 fps | 99.2% |
| SNPE Vectan Tubal 7000 | <<locked>> | 98% | 49,574 psi | 80% | 2782 fps | 95.2% |
| Somchem S321 | <<locked>> | 80% | 43,729 psi | 71% | 2743 fps | 99.2% |
| Somchem S335 | <<locked>> | 80% | 38,957 psi | 63% | 2575 fps | 99.9% |
| Somchem S341 | <<locked>> | 80% | 38,363 psi | 62% | 2625 fps | 96.6% |
| Somchem S355 | <<locked>> | 82% | 32,460 psi | 52% | 2510 fps | 95.3% |
| Somchem S365 | <<locked>> | 90% | 30,298 psi | 49% | 2543 fps | 95.7% |
| Vihtavuori N130 | <<locked>> | 80% | 45,049 psi | 73% | 2654 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 39,871 psi | 64% | 2579 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 35,056 psi | 57% | 2552 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 35,868 psi | 58% | 2552 fps | 99.4% |
| Vihtavuori N150 | <<locked>> | 80% | 28,790 psi | 46% | 2395 fps | 95.4% |
| Vihtavuori N160 | <<locked>> | 92% | 38,334 psi | 62% | 2664 fps | 95% |
| Vihtavuori N530 | <<locked>> | 80% | 40,915 psi | 66% | 2664 fps | 98.6% |
| Vihtavuori N540 | <<locked>> | 80% | 34,635 psi | 56% | 2543 fps | 98.9% |
| Vihtavuori N550 | <<locked>> | 94% | 39,885 psi | 64% | 2717 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 33,924 psi | 55% | 2530 fps | 95.6% |
| Winchester 748 | <<locked>> | 80% | 39,885 psi | 64% | 2703 fps | 99% |
| Winchester StaBALL Match | <<locked>> | 80% | 36,506 psi | 59% | 2615 fps | 96.8% |
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 96 powders for 6 mm GT loaded with the .243 | 95gr | Barnes LRX BT. Alliant Reloder-17 delivers the highest muzzle velocity at 3,061 fps; across all powders the maximum-charge window runs from 1,772 fps to 3,061 fps. Accurate 4350 gives the best case fill at 100 %, and 96 of the 96 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 95.0 gr projectile in 0.243" calls for a 1:7.5 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 52, Hodgdon LEVERevolution rank at the top here: for 6 mm GT with the .243 | 95gr | Barnes LRX BT 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.