Load Specifications
Bullet Manufacturer:Berger
Bullet Weight:100 gr
Bullet Diameter:0.243"
Bullet Length:<<locked>>
Caliber:6 mm GT load data
Case Length (l3):1.725"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:43.5 Grains of Water
Primer Size:Small Rifle (SR)
Barrel Length:24"
Max. allowed Pressure:62,001 psi
Recommended Twist Rate:1:8.5
Load data in caliber 6 mm GT with .243 | 100gr | Berger BT Target bullet and 101 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-17, ReloadSwiss RS 60 and Alliant Power Pro 2000-MR.
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>> | 84% | 53,737 psi | 87% | 2769 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 55,651 psi | 90% | 2844 fps | 100% |
| Accurate 2495 | <<locked>> | 90% | 55,550 psi | 90% | 2838 fps | 100% |
| Accurate 2520 | <<locked>> | 86% | 55,854 psi | 90% | 2894 fps | 100% |
| Accurate 2520 | <<locked>> | 86% | 55,854 psi | 90% | 2894 fps | 100% |
| Accurate 2700 | <<locked>> | 94% | 56,014 psi | 90% | 2838 fps | 96.8% |
| Accurate 4064 | <<locked>> | 92% | 55,753 psi | 90% | 2890 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 55,492 psi | 90% | 2969 fps | 99.5% |
| ADI AR 2206H | <<locked>> | 86% | 52,663 psi | 85% | 2864 fps | 99.8% |
| ADI AR 2208 | <<locked>> | 92% | 53,824 psi | 87% | 2867 fps | 99.6% |
| ADI Benchmark 8208 | <<locked>> | 86% | 55,042 psi | 89% | 2867 fps | 100% |
| Alliant AR-Comp | <<locked>> | 86% | 56,072 psi | 90% | 2848 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 82% | 53,563 psi | 86% | 2894 fps | 99.9% |
| Alliant Power Pro 2000-MR | <<locked>> | 90% | 55,883 psi | 90% | 3038 fps | 99.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 92% | 53,867 psi | 87% | 2894 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 90% | 54,404 psi | 88% | 2913 fps | 99.7% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 53,243 psi | 86% | 2972 fps | 99.6% |
| Alliant Reloder-17 | <<locked>> | 96% | 54,143 psi | 87% | 3005 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 37,768 psi | 61% | 2694 fps | 98% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 42,163 psi | 68% | 2848 fps | 97.1% |
| Baschieri & Pellagri 107 | <<locked>> | 88% | 55,854 psi | 90% | 2933 fps | 99.6% |
| Bofors RP3 | <<locked>> | 92% | 54,172 psi | 87% | 2904 fps | 100% |
| Bofors RP7 | <<locked>> | 96% | 54,621 psi | 88% | 2871 fps | 96.8% |
| Hodgdon Benchmark | <<locked>> | 84% | 53,708 psi | 87% | 2805 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 86% | 54,650 psi | 88% | 2904 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 82% | 52,547 psi | 85% | 2940 fps | 99.6% |
| Hodgdon H322 | <<locked>> | 82% | 55,883 psi | 90% | 2864 fps | 100% |
| Hodgdon H380 | <<locked>> | 92% | 55,347 psi | 89% | 2917 fps | 99.2% |
| Hodgdon H414 | <<locked>> | 98% | 54,737 psi | 88% | 2963 fps | 97.6% |
| Hodgdon H4350 | <<locked>> | 96% | 55,274 psi | 89% | 2920 fps | 96.3% |
| Hodgdon H4895 | <<locked>> | 86% | 53,142 psi | 86% | 2877 fps | 99.9% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 49,211 psi | 79% | 2841 fps | 99.8% |
| Hodgdon LEVERevolution | <<locked>> | 88% | 52,547 psi | 85% | 2910 fps | 100% |
| Hodgdon Superformance | <<locked>> | 98% | 55,361 psi | 89% | 2995 fps | 97.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,389 psi | 57% | 1765 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 54,592 psi | 88% | 2881 fps | 100% |
| IMR 3031 | <<locked>> | 86% | 52,924 psi | 85% | 2861 fps | 100% |
| IMR 4064 | <<locked>> | 90% | 53,476 psi | 86% | 2851 fps | 99.7% |
| IMR 4166 Enduron | <<locked>> | 88% | 53,301 psi | 86% | 2825 fps | 97.1% |
| IMR 4350ᴾ | <<locked>> | 100% | 54,766 psi | 88% | 2897 fps | 96.9% |
| IMR 4451 Enduron | <<locked>> | 96% | 53,127 psi | 86% | 2815 fps | 96.4% |
| IMR 4831ᴾ | <<locked>> | 100% | 52,156 psi | 84% | 2904 fps | 99.3% |
| IMR 4895 | <<locked>> | 90% | 55,796 psi | 90% | 2943 fps | 99.9% |
| IMR 8208 XBR | <<locked>> | 86% | 55,042 psi | 89% | 2867 fps | 100% |
| Lovex D073.5 | <<locked>> | 82% | 55,521 psi | 90% | 2858 fps | 100% |
| Lovex D073.6 | <<locked>> | 88% | 55,854 psi | 90% | 2894 fps | 100% |
| Lovex S060 | <<locked>> | 88% | 55,840 psi | 90% | 2848 fps | 99.9% |
| Lovex S062 | <<locked>> | 90% | 52,939 psi | 85% | 2844 fps | 100% |
| Lovex S065 | <<locked>> | 98% | 55,651 psi | 90% | 2897 fps | 98.7% |
| Lovex S070 | <<locked>> | 98% | 53,084 psi | 86% | 2874 fps | 97.4% |
| Norma 201 | <<locked>> | 88% | 55,042 psi | 89% | 2867 fps | 100% |
| Norma 202 | <<locked>> | 88% | 55,637 psi | 90% | 2871 fps | 100% |
| Norma 203B | <<locked>> | 90% | 53,650 psi | 87% | 2900 fps | 99.9% |
| Norma URPᴾ | <<locked>> | 100% | 54,027 psi | 87% | 2949 fps | 99.4% |
| Ramshot Big Game | <<locked>> | 90% | 53,983 psi | 87% | 2923 fps | 99.8% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 53,156 psi | 86% | 2946 fps | 98.1% |
| Ramshot TAC | <<locked>> | 86% | 55,637 psi | 90% | 2890 fps | 98.8% |
| Ramshot Wild Boar | <<locked>> | 86% | 55,216 psi | 89% | 2910 fps | 99.9% |
| Ramshot X-Terminator | <<locked>> | 84% | 56,101 psi | 90% | 2871 fps | 99.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,650 psi | 57% | 1801 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 54,563 psi | 88% | 2848 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 92% | 55,506 psi | 90% | 2894 fps | 98.1% |
| ReloadSwiss RS 52 | <<locked>> | 88% | 54,607 psi | 88% | 2976 fps | 99.7% |
| ReloadSwiss RS 60 | <<locked>> | 94% | 53,925 psi | 87% | 3009 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 54,955 psi | 89% | 2989 fps | 99.4% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 54,665 psi | 88% | 3012 fps | 99.1% |
| Rottweil R 901 | <<locked>> | 86% | 55,883 psi | 90% | 2848 fps | 100% |
| Rottweil R 902 | <<locked>> | 90% | 55,259 psi | 89% | 2861 fps | 100% |
| Rottweil R 903 | <<locked>> | 94% | 54,041 psi | 87% | 2894 fps | 100% |
| Rottweil R 907 | <<locked>> | 96% | 54,621 psi | 88% | 2871 fps | 96.8% |
| Shooters World Long Rifle | <<locked>> | 98% | 55,651 psi | 90% | 2897 fps | 98.7% |
| Shooters World Match Rifle | <<locked>> | 88% | 55,854 psi | 90% | 2894 fps | 100% |
| Shooters World Precision | <<locked>> | 90% | 52,939 psi | 85% | 2844 fps | 100% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 52,939 psi | 85% | 2841 fps | 96.8% |
| SNPE Vectan SP 11 | <<locked>> | 94% | 55,593 psi | 90% | 2953 fps | 99.9% |
| SNPE Vectan SP 3 | <<locked>> | 82% | 54,331 psi | 88% | 2772 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 86% | 53,853 psi | 87% | 2864 fps | 98.9% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 54,679 psi | 88% | 2890 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 53,374 psi | 86% | 2759 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 92% | 53,156 psi | 86% | 2753 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 96% | 52,475 psi | 85% | 2792 fps | 97% |
| Somchem S321 | <<locked>> | 82% | 52,924 psi | 85% | 2851 fps | 100% |
| Somchem S335 | <<locked>> | 88% | 55,999 psi | 90% | 2802 fps | 100% |
| Somchem S341 | <<locked>> | 86% | 53,374 psi | 86% | 2854 fps | 99.8% |
| Somchem S355 | <<locked>> | 94% | 54,360 psi | 88% | 2890 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 48,805 psi | 79% | 2904 fps | 100% |
| Vihtavuori N130 | <<locked>> | 82% | 52,895 psi | 85% | 2720 fps | 100% |
| Vihtavuori N133 | <<locked>> | 86% | 53,577 psi | 86% | 2746 fps | 100% |
| Vihtavuori N135 | <<locked>> | 92% | 54,795 psi | 88% | 2799 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 55,999 psi | 90% | 2844 fps | 100% |
| Vihtavuori N150 | <<locked>> | 96% | 55,666 psi | 90% | 2867 fps | 100% |
| Vihtavuori N160 | <<locked>> | 98% | 53,388 psi | 86% | 2897 fps | 99.2% |
| Vihtavuori N530 | <<locked>> | 86% | 55,825 psi | 90% | 2871 fps | 100% |
| Vihtavuori N540 | <<locked>> | 90% | 54,143 psi | 87% | 2841 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 56,028 psi | 90% | 2956 fps | 99.4% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 41,133 psi | 66% | 2772 fps | 98% |
| Winchester 6.5 StaBALL | <<locked>> | 98% | 53,708 psi | 87% | 2874 fps | 100% |
| Winchester 748 | <<locked>> | 86% | 55,738 psi | 90% | 2920 fps | 100% |
| Winchester 760 | <<locked>> | 98% | 54,737 psi | 88% | 2963 fps | 97.6% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 33,881 psi | 55% | 2680 fps | 97.5% |
| Winchester StaBALL Match | <<locked>> | 88% | 54,375 psi | 88% | 2897 fps | 100% |
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% | 47,311 psi | 76% | 2677 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 52,040 psi | 84% | 2795 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 40,147 psi | 65% | 2602 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 45,469 psi | 73% | 2736 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 45,469 psi | 73% | 2736 fps | 100% |
| Accurate 2700 | <<locked>> | 90% | 49,110 psi | 79% | 2726 fps | 95.3% |
| Accurate 4064 | <<locked>> | 80% | 37,942 psi | 61% | 2592 fps | 100% |
| Accurate 4350 | <<locked>> | 88% | 36,405 psi | 59% | 2621 fps | 95.9% |
| ADI AR 2206H | <<locked>> | 80% | 43,845 psi | 71% | 2710 fps | 98.8% |
| ADI AR 2208 | <<locked>> | 80% | 37,275 psi | 60% | 2556 fps | 96.7% |
| ADI Benchmark 8208 | <<locked>> | 80% | 45,890 psi | 74% | 2717 fps | 99.7% |
| Alliant AR-Comp | <<locked>> | 80% | 46,006 psi | 74% | 2707 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 50,212 psi | 81% | 2841 fps | 99.7% |
| Alliant Power Pro 2000-MR | 32.3 gr | 80% | 39,494 psi | 64% | 2726 fps | 97.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 36,840 psi | 59% | 2579 fps | 98.1% |
| Alliant Reloder-15 | <<locked>> | 80% | 39,566 psi | 64% | 2641 fps | 97.5% |
| Alliant Reloder-16 | <<locked>> | 86% | 34,476 psi | 56% | 2579 fps | 95% |
| Alliant Reloder-17 | 31.9 gr | 80% | 31,836 psi | 51% | 2539 fps | 95.9% |
| Alliant Reloder-23 | <<locked>> | 94% | 31,531 psi | 51% | 2530 fps | 95.6% |
| Alliant Reloder-26 | <<locked>> | 96% | 36,753 psi | 59% | 2720 fps | 95.1% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 42,946 psi | 69% | 2710 fps | 97.8% |
| Bofors RP3 | <<locked>> | 80% | 36,318 psi | 59% | 2579 fps | 98.1% |
| Bofors RP7 | <<locked>> | 92% | 48,182 psi | 78% | 2762 fps | 95.4% |
| Hodgdon Benchmark | <<locked>> | 80% | 47,529 psi | 77% | 2707 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 44,338 psi | 72% | 2733 fps | 99.8% |
| Hodgdon CFE223 | <<locked>> | 80% | 49,110 psi | 79% | 2881 fps | 99.3% |
| Hodgdon H322 | <<locked>> | 80% | 52,199 psi | 84% | 2812 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 37,101 psi | 60% | 2579 fps | 95.4% |
| Hodgdon H414 | <<locked>> | 92% | 44,585 psi | 72% | 2785 fps | 95.3% |
| Hodgdon H4350 | <<locked>> | 94% | 52,156 psi | 84% | 2871 fps | 95.6% |
| Hodgdon H4895 | <<locked>> | 80% | 44,237 psi | 71% | 2720 fps | 99.2% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 31,604 psi | 51% | 2477 fps | 95.9% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 39,972 psi | 64% | 2684 fps | 98.9% |
| Hodgdon Superformance | <<locked>> | 94% | 48,240 psi | 78% | 2874 fps | 95.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,208 psi | 42% | 1572 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 42,467 psi | 68% | 2671 fps | 98.9% |
| IMR 3031 | <<locked>> | 80% | 43,511 psi | 70% | 2713 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 39,102 psi | 63% | 2589 fps | 97.5% |
| IMR 4166 Enduron | <<locked>> | 82% | 44,135 psi | 71% | 2661 fps | 95% |
| IMR 4350 | <<locked>> | 96% | 47,964 psi | 77% | 2782 fps | 95.4% |
| IMR 4451 Enduron | <<locked>> | 92% | 47,036 psi | 76% | 2710 fps | 95% |
| IMR 4831 | <<locked>> | 88% | 35,302 psi | 57% | 2579 fps | 95.6% |
| IMR 4895 | <<locked>> | 80% | 40,509 psi | 65% | 2674 fps | 98.3% |
| IMR 8208 XBR | <<locked>> | 80% | 45,890 psi | 74% | 2717 fps | 99.7% |
| Lovex D073.5 | <<locked>> | 80% | 51,924 psi | 84% | 2802 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 42,786 psi | 69% | 2687 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 43,700 psi | 70% | 2641 fps | 98.8% |
| Lovex S062 | <<locked>> | 80% | 38,812 psi | 63% | 2592 fps | 98.9% |
| Lovex S065 | <<locked>> | 88% | 41,060 psi | 66% | 2638 fps | 95.7% |
| Lovex S070 | <<locked>> | 92% | 43,874 psi | 71% | 2713 fps | 95.2% |
| Norma 201 | <<locked>> | 80% | 42,859 psi | 69% | 2661 fps | 99.5% |
| Norma 202 | <<locked>> | 80% | 43,192 psi | 70% | 2671 fps | 100% |
| Norma 203B | <<locked>> | 80% | 38,986 psi | 63% | 2631 fps | 97.9% |
| Norma URP | <<locked>> | 88% | 36,579 psi | 59% | 2621 fps | 95.7% |
| Ramshot Big Game | <<locked>> | 80% | 38,174 psi | 62% | 2635 fps | 97.5% |
| Ramshot Hunter | <<locked>> | 92% | 41,104 psi | 66% | 2723 fps | 95.2% |
| Ramshot TAC | <<locked>> | 80% | 45,556 psi | 73% | 2717 fps | 97.1% |
| Ramshot Wild Boar | <<locked>> | 80% | 44,947 psi | 72% | 2736 fps | 99% |
| Ramshot X-Terminator | <<locked>> | 80% | 49,385 psi | 80% | 2762 fps | 99.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,527 psi | 43% | 1611 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 51,488 psi | 83% | 2802 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 43,047 psi | 69% | 2677 fps | 95.4% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 41,481 psi | 67% | 2746 fps | 98% |
| ReloadSwiss RS 60 | 31.9 gr | 80% | 33,866 psi | 55% | 2608 fps | 99% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 36,216 psi | 58% | 2641 fps | 95.4% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 39,059 psi | 63% | 2707 fps | 95.4% |
| Rottweil R 901 | <<locked>> | 80% | 46,601 psi | 75% | 2700 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 40,857 psi | 66% | 2615 fps | 99.2% |
| Rottweil R 903 | <<locked>> | 80% | 34,040 psi | 55% | 2516 fps | 97.2% |
| Rottweil R 907 | <<locked>> | 92% | 48,182 psi | 78% | 2762 fps | 95.4% |
| Shooters World Long Rifle | <<locked>> | 88% | 41,060 psi | 66% | 2638 fps | 95.7% |
| Shooters World Match Rifle | <<locked>> | 80% | 42,786 psi | 69% | 2687 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 38,812 psi | 63% | 2592 fps | 98.9% |
| Shooters World SW4350 | <<locked>> | 96% | 46,789 psi | 75% | 2736 fps | 95.4% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 35,244 psi | 57% | 2572 fps | 96.7% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 51,401 psi | 83% | 2730 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 44,048 psi | 71% | 2694 fps | 97.3% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 42,380 psi | 68% | 2677 fps | 98.5% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 44,179 psi | 71% | 2615 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 36,680 psi | 59% | 2480 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 46,093 psi | 74% | 2687 fps | 95.6% |
| Somchem S321 | <<locked>> | 80% | 49,574 psi | 80% | 2799 fps | 100% |
| Somchem S335 | <<locked>> | 80% | 43,816 psi | 71% | 2618 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 43,758 psi | 71% | 2694 fps | 98.7% |
| Somchem S355 | <<locked>> | 80% | 35,041 psi | 57% | 2530 fps | 97.3% |
| Somchem S365 | <<locked>> | 82% | 27,166 psi | 44% | 2408 fps | 95.3% |
| Vihtavuori N130 | <<locked>> | 80% | 49,864 psi | 80% | 2677 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 44,469 psi | 72% | 2612 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 37,681 psi | 61% | 2530 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 40,683 psi | 66% | 2602 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 33,185 psi | 54% | 2464 fps | 98% |
| Vihtavuori N160 | <<locked>> | 86% | 35,882 psi | 58% | 2569 fps | 95.4% |
| Vihtavuori N530 | <<locked>> | 80% | 45,876 psi | 74% | 2713 fps | 99.8% |
| Vihtavuori N540 | <<locked>> | 80% | 39,189 psi | 63% | 2589 fps | 99.9% |
| Vihtavuori N550 | <<locked>> | 86% | 35,563 psi | 57% | 2575 fps | 95.1% |
| Vihtavuori N555 | <<locked>> | 94% | 33,852 psi | 55% | 2608 fps | 95.7% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 29,689 psi | 48% | 2385 fps | 95.1% |
| Winchester 748 | <<locked>> | 80% | 45,484 psi | 73% | 2759 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 44,962 psi | 73% | 2795 fps | 95.4% |
| Winchester StaBALL HD | <<locked>> | 98% | 31,749 psi | 51% | 2612 fps | 96.3% |
| Winchester StaBALL Match | <<locked>> | 80% | 41,597 psi | 67% | 2677 fps | 98.9% |
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 101 powders for 6 mm GT loaded with the .243 | 100gr | Berger BT Target. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 3,038 fps; across all powders the maximum-charge window runs from 1,765 fps to 3,038 fps. Accurate 4350 gives the best case fill at 100 %, and 101 of the 101 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (427 MPa), the top charges use 55–90 %, leaving at least 10 % headroom. The 100.0 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-23 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 Reloder-17, ReloadSwiss RS 60, Alliant Power Pro 2000-MR rank at the top here: for 6 mm GT with the .243 | 100gr | Berger BT Target 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.