Load Specifications
Bullet Manufacturer:Berger
Bullet Weight:105 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:1:9.0
Load data in caliber 6 mm GT with .243 | 105gr | Berger BT Target bullet and 102 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 Alliant Reloder-17.
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% | 55,999 psi | 90% | 2707 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 54,012 psi | 87% | 2730 fps | 100% |
| Accurate 2495 | <<locked>> | 90% | 53,940 psi | 87% | 2726 fps | 100% |
| Accurate 2520 | <<locked>> | 84% | 52,417 psi | 85% | 2743 fps | 100% |
| Accurate 2700 | <<locked>> | 90% | 53,708 psi | 87% | 2720 fps | 96.4% |
| Accurate 4064 | <<locked>> | 92% | 53,867 psi | 87% | 2772 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 53,417 psi | 86% | 2848 fps | 99.4% |
| ADI AR 2206H | <<locked>> | 88% | 54,810 psi | 88% | 2802 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 94% | 55,970 psi | 90% | 2805 fps | 99.7% |
| ADI Benchmark 8208 | <<locked>> | 86% | 53,998 psi | 87% | 2756 fps | 100% |
| Alliant AR-Comp | <<locked>> | 86% | 54,491 psi | 88% | 2733 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 82% | 55,869 psi | 90% | 2864 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 90% | 54,259 psi | 88% | 2917 fps | 99.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 94% | 55,579 psi | 90% | 2825 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 82% | 55,347 psi | 89% | 2707 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 92% | 56,086 psi | 90% | 2841 fps | 99.8% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 51,314 psi | 83% | 2844 fps | 99.4% |
| Alliant Reloder-17 | <<locked>> | 96% | 52,431 psi | 85% | 2887 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 36,695 psi | 59% | 2585 fps | 97.8% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 40,466 psi | 65% | 2723 fps | 96.6% |
| Baschieri & Pellagri 107 | <<locked>> | 88% | 54,607 psi | 88% | 2818 fps | 99.5% |
| Bofors RP3 | <<locked>> | 92% | 52,649 psi | 85% | 2789 fps | 100% |
| Bofors RP7 | <<locked>> | 96% | 52,939 psi | 85% | 2749 fps | 96.5% |
| Hodgdon Benchmark | <<locked>> | 86% | 55,680 psi | 90% | 2740 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 86% | 53,113 psi | 86% | 2785 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 84% | 55,013 psi | 89% | 2881 fps | 99.8% |
| Hodgdon H322 | <<locked>> | 82% | 54,346 psi | 88% | 2746 fps | 100% |
| Hodgdon H335 | <<locked>> | 82% | 55,753 psi | 90% | 2779 fps | 100% |
| Hodgdon H380 | <<locked>> | 92% | 53,519 psi | 86% | 2795 fps | 99% |
| Hodgdon H414 | <<locked>> | 98% | 52,982 psi | 85% | 2841 fps | 97.3% |
| Hodgdon H4350 | <<locked>> | 96% | 53,824 psi | 87% | 2802 fps | 96% |
| Hodgdon H4895 | <<locked>> | 88% | 55,317 psi | 89% | 2815 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 47,688 psi | 77% | 2726 fps | 99.7% |
| Hodgdon LEVERevolution | <<locked>> | 90% | 54,244 psi | 87% | 2841 fps | 100% |
| Hodgdon Superformance | <<locked>> | 98% | 54,012 psi | 87% | 2877 fps | 96.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,302 psi | 57% | 1690 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 53,214 psi | 86% | 2766 fps | 99.9% |
| IMR 3031 | <<locked>> | 88% | 55,376 psi | 89% | 2802 fps | 100% |
| IMR 4064 | <<locked>> | 92% | 55,448 psi | 89% | 2785 fps | 99.8% |
| IMR 4166 Enduron | <<locked>> | 90% | 55,434 psi | 89% | 2762 fps | 97.5% |
| IMR 4198 | <<locked>> | 82% | 55,738 psi | 90% | 2671 fps | 100% |
| IMR 4350ᴾ | <<locked>> | 100% | 53,069 psi | 86% | 2776 fps | 96.6% |
| IMR 4451 Enduron | <<locked>> | 96% | 54,766 psi | 88% | 2782 fps | 97.3% |
| IMR 4831ᴾ | <<locked>> | 100% | 50,256 psi | 81% | 2782 fps | 99.1% |
| IMR 4895 | <<locked>> | 90% | 54,041 psi | 87% | 2825 fps | 99.9% |
| IMR 8208 XBR | <<locked>> | 86% | 53,998 psi | 87% | 2756 fps | 100% |
| Lovex D073.5 | <<locked>> | 82% | 54,099 psi | 87% | 2743 fps | 100% |
| Lovex D073.6 | <<locked>> | 88% | 54,534 psi | 88% | 2782 fps | 100% |
| Lovex S060 | <<locked>> | 88% | 54,810 psi | 88% | 2736 fps | 99.9% |
| Lovex S062 | <<locked>> | 92% | 54,810 psi | 88% | 2779 fps | 100% |
| Lovex S065 | <<locked>> | 98% | 54,056 psi | 87% | 2776 fps | 98.5% |
| Lovex S070ᴾ | <<locked>> | 100% | 54,911 psi | 89% | 2812 fps | 97.7% |
| Norma 201 | <<locked>> | 88% | 53,476 psi | 86% | 2749 fps | 100% |
| Norma 202 | <<locked>> | 88% | 54,114 psi | 87% | 2753 fps | 100% |
| Norma 203B | <<locked>> | 92% | 55,245 psi | 89% | 2828 fps | 99.9% |
| Norma URPᴾ | <<locked>> | 100% | 52,576 psi | 85% | 2835 fps | 99.2% |
| Ramshot Big Game | <<locked>> | 90% | 52,286 psi | 84% | 2805 fps | 99.7% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 51,285 psi | 83% | 2825 fps | 97.8% |
| Ramshot TAC | <<locked>> | 86% | 54,346 psi | 88% | 2776 fps | 98.6% |
| Ramshot Wild Boar | <<locked>> | 86% | 53,722 psi | 87% | 2792 fps | 99.8% |
| Ramshot X-Terminator | <<locked>> | 84% | 54,969 psi | 89% | 2759 fps | 99.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,592 psi | 57% | 1729 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 53,243 psi | 86% | 2736 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 92% | 53,940 psi | 87% | 2776 fps | 97.9% |
| ReloadSwiss RS 52 | <<locked>> | 88% | 52,837 psi | 85% | 2854 fps | 99.6% |
| ReloadSwiss RS 60 | <<locked>> | 96% | 55,927 psi | 90% | 2943 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 52,939 psi | 85% | 2867 fps | 99.2% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 53,171 psi | 86% | 2894 fps | 98.9% |
| Rottweil R 901 | <<locked>> | 86% | 54,868 psi | 88% | 2736 fps | 100% |
| Rottweil R 902 | <<locked>> | 90% | 54,259 psi | 88% | 2749 fps | 100% |
| Rottweil R 903 | <<locked>> | 96% | 56,028 psi | 90% | 2831 fps | 100% |
| Rottweil R 907 | <<locked>> | 96% | 52,939 psi | 85% | 2749 fps | 96.5% |
| Shooters World Long Rifle | <<locked>> | 98% | 54,056 psi | 87% | 2776 fps | 98.5% |
| Shooters World Match Rifle | <<locked>> | 88% | 54,534 psi | 88% | 2782 fps | 100% |
| Shooters World Precision | <<locked>> | 92% | 54,810 psi | 88% | 2779 fps | 100% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 54,911 psi | 89% | 2812 fps | 97.7% |
| SNPE Vectan SP 11 | <<locked>> | 94% | 53,969 psi | 87% | 2838 fps | 99.9% |
| SNPE Vectan SP 7 | <<locked>> | 86% | 52,431 psi | 85% | 2746 fps | 98.8% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 53,098 psi | 86% | 2772 fps | 99.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 55,332 psi | 89% | 2690 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 55,172 psi | 89% | 2687 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 98% | 54,418 psi | 88% | 2730 fps | 97.3% |
| Somchem S321 | <<locked>> | 84% | 55,376 psi | 89% | 2792 fps | 100% |
| Somchem S335 | <<locked>> | 88% | 54,505 psi | 88% | 2690 fps | 100% |
| Somchem S341 | <<locked>> | 88% | 55,782 psi | 90% | 2795 fps | 99.9% |
| Somchem S355 | <<locked>> | 94% | 52,837 psi | 85% | 2776 fps | 99.9% |
| Somchem S365ᴾ | <<locked>> | 100% | 47,021 psi | 76% | 2785 fps | 100% |
| Vihtavuori N130 | <<locked>> | 84% | 55,332 psi | 89% | 2661 fps | 100% |
| Vihtavuori N133 | <<locked>> | 88% | 55,463 psi | 89% | 2677 fps | 100% |
| Vihtavuori N135 | <<locked>> | 90% | 53,679 psi | 87% | 2717 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 54,723 psi | 88% | 2733 fps | 100% |
| Vihtavuori N150 | <<locked>> | 96% | 54,418 psi | 88% | 2759 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 55,303 psi | 89% | 2835 fps | 99.4% |
| Vihtavuori N530 | <<locked>> | 86% | 54,302 psi | 88% | 2753 fps | 100% |
| Vihtavuori N540 | <<locked>> | 92% | 55,970 psi | 90% | 2772 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 54,404 psi | 88% | 2841 fps | 99.2% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 39,697 psi | 64% | 2661 fps | 97.7% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 56,028 psi | 90% | 2815 fps | 100% |
| Winchester 748 | <<locked>> | 86% | 53,954 psi | 87% | 2802 fps | 100% |
| Winchester 760 | <<locked>> | 98% | 52,982 psi | 85% | 2841 fps | 97.3% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 32,663 psi | 53% | 2559 fps | 96.9% |
| Winchester StaBALL Match | <<locked>> | 88% | 52,953 psi | 85% | 2782 fps | 99.9% |
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% | 46,311 psi | 75% | 2572 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 50,763 psi | 82% | 2684 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 38,870 psi | 63% | 2493 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 45,730 psi | 74% | 2641 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 50,488 psi | 81% | 2671 fps | 95.7% |
| Accurate 4064 | <<locked>> | 80% | 36,753 psi | 59% | 2487 fps | 99.9% |
| Accurate 4350 | <<locked>> | 88% | 35,143 psi | 57% | 2513 fps | 95.6% |
| ADI AR 2206H | <<locked>> | 80% | 42,844 psi | 69% | 2602 fps | 98.7% |
| ADI AR 2208 | <<locked>> | 80% | 36,230 psi | 58% | 2448 fps | 96.4% |
| ADI Benchmark 8208 | <<locked>> | 80% | 44,889 psi | 72% | 2612 fps | 99.6% |
| Alliant AR-Comp | <<locked>> | 80% | 44,512 psi | 72% | 2595 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 52,388 psi | 84% | 2808 fps | 99.9% |
| Alliant Power Pro 2000-MR | 30.3 gr | 80% | 38,580 psi | 62% | 2615 fps | 96.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 35,766 psi | 58% | 2474 fps | 98% |
| Alliant Reloder-10x | <<locked>> | 80% | 52,417 psi | 85% | 2667 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 38,609 psi | 62% | 2536 fps | 97.3% |
| Alliant Reloder-16 | <<locked>> | 88% | 35,737 psi | 58% | 2530 fps | 95.7% |
| Alliant Reloder-17 | 29.9 gr | 80% | 30,951 psi | 50% | 2431 fps | 95.6% |
| Alliant Reloder-23 | <<locked>> | 94% | 30,560 psi | 49% | 2425 fps | 95.1% |
| Alliant Reloder-26 | <<locked>> | 98% | 38,000 psi | 61% | 2667 fps | 95.6% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 41,626 psi | 67% | 2595 fps | 97.5% |
| Bofors RP3 | <<locked>> | 80% | 35,346 psi | 57% | 2477 fps | 98% |
| Bofors RP7 | <<locked>> | 92% | 46,760 psi | 75% | 2648 fps | 95.1% |
| Hodgdon Benchmark | <<locked>> | 80% | 46,470 psi | 75% | 2595 fps | 99.9% |
| Hodgdon BL-C2 | <<locked>> | 80% | 43,265 psi | 70% | 2625 fps | 99.8% |
| Hodgdon CFE223 | <<locked>> | 80% | 47,543 psi | 77% | 2762 fps | 99.1% |
| Hodgdon H322 | <<locked>> | 80% | 50,995 psi | 82% | 2700 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 51,967 psi | 84% | 2726 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 36,260 psi | 58% | 2477 fps | 95.2% |
| Hodgdon H414 | <<locked>> | 92% | 43,424 psi | 70% | 2677 fps | 95% |
| Hodgdon H4350 | <<locked>> | 94% | 50,546 psi | 82% | 2753 fps | 95.2% |
| Hodgdon H4895 | <<locked>> | 80% | 43,192 psi | 70% | 2612 fps | 99.1% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 30,705 psi | 50% | 2375 fps | 95.6% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 38,827 psi | 63% | 2575 fps | 98.8% |
| Hodgdon Superformance | <<locked>> | 94% | 46,746 psi | 75% | 2753 fps | 95.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,266 psi | 42% | 1509 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 41,466 psi | 67% | 2566 fps | 98.8% |
| IMR 3031 | <<locked>> | 80% | 42,496 psi | 69% | 2605 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 38,014 psi | 61% | 2484 fps | 97.2% |
| IMR 4166 Enduron | <<locked>> | 84% | 46,180 psi | 74% | 2608 fps | 95.6% |
| IMR 4198 | <<locked>> | 80% | 52,257 psi | 84% | 2621 fps | 100% |
| IMR 4350 | <<locked>> | 96% | 46,905 psi | 76% | 2674 fps | 95.1% |
| IMR 4451 Enduron | <<locked>> | 90% | 45,658 psi | 74% | 2631 fps | 95.3% |
| IMR 4831 | <<locked>> | 88% | 34,127 psi | 55% | 2474 fps | 95.2% |
| IMR 4895 | <<locked>> | 80% | 39,508 psi | 64% | 2566 fps | 98.1% |
| IMR 8208 XBR | <<locked>> | 80% | 44,889 psi | 72% | 2612 fps | 99.6% |
| Lovex D073.5 | <<locked>> | 80% | 50,386 psi | 81% | 2690 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 41,452 psi | 67% | 2575 fps | 99.9% |
| Lovex S060 | <<locked>> | 80% | 42,989 psi | 69% | 2539 fps | 98.7% |
| Lovex S062 | <<locked>> | 80% | 38,014 psi | 61% | 2490 fps | 98.8% |
| Lovex S065 | <<locked>> | 88% | 39,813 psi | 64% | 2526 fps | 95.4% |
| Lovex S070 | <<locked>> | 92% | 42,859 psi | 69% | 2605 fps | 95% |
| Norma 201 | <<locked>> | 80% | 41,713 psi | 67% | 2549 fps | 99.3% |
| Norma 202 | <<locked>> | 80% | 42,090 psi | 68% | 2562 fps | 100% |
| Norma 203B | <<locked>> | 80% | 37,971 psi | 61% | 2523 fps | 97.7% |
| Norma URP | <<locked>> | 88% | 35,781 psi | 58% | 2520 fps | 95.6% |
| Ramshot Big Game | <<locked>> | 80% | 37,188 psi | 60% | 2530 fps | 97.3% |
| Ramshot Hunter | <<locked>> | 94% | 42,279 psi | 68% | 2661 fps | 95.6% |
| Ramshot TAC | <<locked>> | 80% | 44,628 psi | 72% | 2612 fps | 96.9% |
| Ramshot Wild Boar | <<locked>> | 80% | 43,961 psi | 71% | 2631 fps | 98.9% |
| Ramshot X-Terminator | <<locked>> | 80% | 48,370 psi | 78% | 2657 fps | 99.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,629 psi | 43% | 1549 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 50,067 psi | 81% | 2687 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 41,858 psi | 68% | 2566 fps | 95.1% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 40,147 psi | 65% | 2631 fps | 97.7% |
| ReloadSwiss RS 60 | 29.9 gr | 80% | 32,982 psi | 53% | 2500 fps | 98.8% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 35,027 psi | 56% | 2530 fps | 95% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 37,913 psi | 61% | 2595 fps | 95% |
| Rottweil R 901 | <<locked>> | 80% | 45,600 psi | 74% | 2595 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 39,697 psi | 64% | 2503 fps | 99% |
| Rottweil R 903 | <<locked>> | 80% | 33,359 psi | 54% | 2425 fps | 97.1% |
| Rottweil R 907 | <<locked>> | 92% | 46,760 psi | 75% | 2648 fps | 95.1% |
| Shooters World Long Rifle | <<locked>> | 88% | 39,813 psi | 64% | 2526 fps | 95.4% |
| Shooters World Match Rifle | <<locked>> | 80% | 41,452 psi | 67% | 2575 fps | 99.9% |
| Shooters World Precision | <<locked>> | 80% | 38,014 psi | 61% | 2490 fps | 98.8% |
| Shooters World SW4350 | <<locked>> | 92% | 42,859 psi | 69% | 2605 fps | 95% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 34,185 psi | 55% | 2467 fps | 96.4% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 42,656 psi | 69% | 2579 fps | 97% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 41,205 psi | 66% | 2569 fps | 98.4% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 43,236 psi | 70% | 2510 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 35,839 psi | 58% | 2382 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 44,773 psi | 72% | 2575 fps | 95.2% |
| Somchem S321 | <<locked>> | 80% | 48,124 psi | 78% | 2684 fps | 99.9% |
| Somchem S335 | <<locked>> | 80% | 42,714 psi | 69% | 2510 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 42,438 psi | 68% | 2579 fps | 98.5% |
| Somchem S355 | <<locked>> | 80% | 34,026 psi | 55% | 2425 fps | 97% |
| Somchem S365 | <<locked>> | 84% | 27,992 psi | 45% | 2356 fps | 96% |
| Vihtavuori N130 | <<locked>> | 80% | 48,863 psi | 79% | 2572 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 43,511 psi | 70% | 2507 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 39,044 psi | 63% | 2493 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 39,972 psi | 64% | 2503 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 32,576 psi | 53% | 2369 fps | 97.9% |
| Vihtavuori N160 | <<locked>> | 86% | 35,027 psi | 56% | 2467 fps | 95.2% |
| Vihtavuori N530 | <<locked>> | 80% | 44,889 psi | 72% | 2605 fps | 99.7% |
| Vihtavuori N540 | <<locked>> | 80% | 38,363 psi | 62% | 2490 fps | 99.9% |
| Vihtavuori N550 | <<locked>> | 88% | 36,709 psi | 59% | 2520 fps | 95.6% |
| Vihtavuori N555 | <<locked>> | 94% | 32,692 psi | 53% | 2500 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 30,850 psi | 50% | 2343 fps | 95.8% |
| Winchester 748 | <<locked>> | 80% | 44,237 psi | 71% | 2648 fps | 99.9% |
| Winchester 760 | <<locked>> | 92% | 43,424 psi | 70% | 2677 fps | 95% |
| Winchester StaBALL HD | <<locked>> | 98% | 30,763 psi | 50% | 2500 fps | 95.7% |
| Winchester StaBALL Match | <<locked>> | 80% | 40,524 psi | 65% | 2569 fps | 98.7% |
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 102 powders for 6 mm GT loaded with the .243 | 105gr | Berger BT Target. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,943 fps; across all powders the maximum-charge window runs from 1,690 fps to 2,943 fps. Accurate 4350 gives the best case fill at 100 %, and 102 of the 102 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (427 MPa), the top charges use 53–90 %, leaving at least 10 % headroom. The 105.0 gr projectile in 0.243" calls for a 1:9.0 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 Power Pro 2000-MR, ReloadSwiss RS 60, Alliant Reloder-17 rank at the top here: for 6 mm GT with the .243 | 105gr | 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.