Load Specifications
Bullet Manufacturer:Nosler
Bullet Weight:107 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 | 107gr | Nosler Custom Competition bullet and 103 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% | 55,056 psi | 89% | 2657 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 53,258 psi | 86% | 2680 fps | 100% |
| Accurate 2495 | <<locked>> | 90% | 53,113 psi | 86% | 2680 fps | 100% |
| Accurate 2520 | <<locked>> | 86% | 55,230 psi | 89% | 2746 fps | 100% |
| Accurate 2700 | <<locked>> | 90% | 52,823 psi | 85% | 2671 fps | 96.1% |
| Accurate 4064 | <<locked>> | 92% | 53,156 psi | 86% | 2726 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 52,069 psi | 84% | 2792 fps | 99.2% |
| ADI AR 2206H | <<locked>> | 88% | 54,157 psi | 87% | 2756 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 94% | 54,998 psi | 89% | 2753 fps | 99.7% |
| ADI Benchmark 8208 | <<locked>> | 86% | 53,272 psi | 86% | 2710 fps | 100% |
| Alliant AR-Comp | <<locked>> | 86% | 53,461 psi | 86% | 2684 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 82% | 54,853 psi | 88% | 2808 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 90% | 53,403 psi | 86% | 2864 fps | 99.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 94% | 54,520 psi | 88% | 2772 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 82% | 54,723 psi | 88% | 2661 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 92% | 55,579 psi | 90% | 2795 fps | 99.8% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 50,618 psi | 82% | 2795 fps | 99.3% |
| Alliant Reloder-17 | <<locked>> | 98% | 55,317 psi | 89% | 2890 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 36,158 psi | 58% | 2536 fps | 97.6% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 39,769 psi | 64% | 2674 fps | 96.3% |
| Baschieri & Pellagri 107 | <<locked>> | 88% | 53,737 psi | 87% | 2769 fps | 99.4% |
| Bofors RP3 | <<locked>> | 94% | 55,172 psi | 89% | 2789 fps | 100% |
| Bofors RP7 | <<locked>> | 98% | 55,579 psi | 90% | 2753 fps | 97% |
| Hodgdon Benchmark | <<locked>> | 86% | 54,969 psi | 89% | 2690 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 88% | 56,028 psi | 90% | 2789 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 84% | 53,911 psi | 87% | 2828 fps | 99.7% |
| Hodgdon H322 | <<locked>> | 82% | 53,896 psi | 87% | 2703 fps | 100% |
| Hodgdon H335 | <<locked>> | 82% | 55,056 psi | 89% | 2733 fps | 100% |
| Hodgdon H380 | <<locked>> | 92% | 53,055 psi | 86% | 2753 fps | 98.9% |
| Hodgdon H414ᴾ | <<locked>> | 100% | 55,303 psi | 89% | 2841 fps | 97.7% |
| Hodgdon H4350 | <<locked>> | 96% | 53,011 psi | 86% | 2753 fps | 95.8% |
| Hodgdon H4895 | <<locked>> | 88% | 54,650 psi | 88% | 2766 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 46,862 psi | 76% | 2677 fps | 99.6% |
| Hodgdon LEVERevolution | <<locked>> | 90% | 53,780 psi | 87% | 2799 fps | 100% |
| Hodgdon Superformance | <<locked>> | 98% | 52,721 psi | 85% | 2818 fps | 96.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,041 psi | 57% | 1657 fps | 100% |
| Hodgdon VARGET | <<locked>> | 90% | 55,999 psi | 90% | 2769 fps | 100% |
| IMR 3031 | <<locked>> | 88% | 54,476 psi | 88% | 2753 fps | 100% |
| IMR 4064 | <<locked>> | 92% | 54,346 psi | 88% | 2733 fps | 99.7% |
| IMR 4166 Enduron | <<locked>> | 90% | 54,955 psi | 89% | 2717 fps | 97.4% |
| IMR 4198 | <<locked>> | 82% | 54,940 psi | 89% | 2621 fps | 100% |
| IMR 4350ᴾ | <<locked>> | 100% | 51,938 psi | 84% | 2723 fps | 96.3% |
| IMR 4451 Enduron | <<locked>> | 96% | 54,433 psi | 88% | 2740 fps | 97.2% |
| IMR 4831ᴾ | <<locked>> | 100% | 49,545 psi | 80% | 2736 fps | 99% |
| IMR 4895 | <<locked>> | 90% | 53,476 psi | 86% | 2776 fps | 99.9% |
| IMR 8208 XBR | <<locked>> | 86% | 53,272 psi | 86% | 2710 fps | 100% |
| Lovex D073.5 | <<locked>> | 82% | 53,388 psi | 86% | 2697 fps | 100% |
| Lovex D073.6 | <<locked>> | 88% | 53,461 psi | 86% | 2730 fps | 100% |
| Lovex S060 | <<locked>> | 88% | 54,186 psi | 87% | 2687 fps | 99.8% |
| Lovex S062 | <<locked>> | 92% | 54,186 psi | 87% | 2733 fps | 100% |
| Lovex S065 | <<locked>> | 98% | 53,243 psi | 86% | 2726 fps | 98.3% |
| Lovex S070ᴾ | <<locked>> | 100% | 54,201 psi | 87% | 2762 fps | 97.6% |
| Norma 201 | <<locked>> | 88% | 52,736 psi | 85% | 2700 fps | 100% |
| Norma 202 | <<locked>> | 88% | 53,374 psi | 86% | 2707 fps | 100% |
| Norma 203B | <<locked>> | 92% | 54,723 psi | 88% | 2785 fps | 99.9% |
| Norma URPᴾ | <<locked>> | 100% | 51,793 psi | 84% | 2785 fps | 99.1% |
| Ramshot Big Game | <<locked>> | 92% | 54,810 psi | 88% | 2805 fps | 99.9% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 50,749 psi | 82% | 2779 fps | 97.7% |
| Ramshot TAC | <<locked>> | 86% | 53,447 psi | 86% | 2723 fps | 98.5% |
| Ramshot Wild Boar | <<locked>> | 86% | 52,765 psi | 85% | 2740 fps | 99.8% |
| Ramshot X-Terminator | <<locked>> | 84% | 54,389 psi | 88% | 2713 fps | 99.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,766 psi | 58% | 1703 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 52,924 psi | 85% | 2694 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 92% | 53,127 psi | 86% | 2726 fps | 97.7% |
| ReloadSwiss RS 52 | <<locked>> | 90% | 55,767 psi | 90% | 2861 fps | 99.8% |
| ReloadSwiss RS 60 | <<locked>> | 96% | 55,230 psi | 89% | 2894 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 51,924 psi | 84% | 2815 fps | 99% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 52,272 psi | 84% | 2841 fps | 98.8% |
| Rottweil R 901 | <<locked>> | 86% | 53,925 psi | 87% | 2687 fps | 100% |
| Rottweil R 902 | <<locked>> | 90% | 53,490 psi | 86% | 2703 fps | 100% |
| Rottweil R 903 | <<locked>> | 96% | 55,027 psi | 89% | 2779 fps | 100% |
| Rottweil R 907 | <<locked>> | 98% | 55,579 psi | 90% | 2753 fps | 97% |
| Shooters World Long Rifle | <<locked>> | 98% | 53,243 psi | 86% | 2726 fps | 98.3% |
| Shooters World Match Rifle | <<locked>> | 88% | 53,461 psi | 86% | 2730 fps | 100% |
| Shooters World Precision | <<locked>> | 92% | 54,186 psi | 87% | 2733 fps | 100% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 54,201 psi | 87% | 2762 fps | 97.6% |
| SNPE Vectan SP 11 | <<locked>> | 94% | 53,156 psi | 86% | 2789 fps | 99.8% |
| SNPE Vectan SP 3 | <<locked>> | 82% | 55,811 psi | 90% | 2684 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 88% | 55,376 psi | 89% | 2753 fps | 99.1% |
| SNPE Vectan SP 9 | <<locked>> | 90% | 55,956 psi | 90% | 2779 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 54,476 psi | 88% | 2644 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 54,592 psi | 88% | 2644 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 98% | 53,679 psi | 87% | 2680 fps | 97.1% |
| Somchem S321 | <<locked>> | 84% | 54,302 psi | 88% | 2740 fps | 100% |
| Somchem S335 | <<locked>> | 88% | 53,795 psi | 87% | 2644 fps | 100% |
| Somchem S341 | <<locked>> | 88% | 54,868 psi | 88% | 2746 fps | 99.9% |
| Somchem S355 | <<locked>> | 96% | 55,288 psi | 89% | 2776 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 45,861 psi | 74% | 2730 fps | 100% |
| Vihtavuori N130 | <<locked>> | 84% | 54,360 psi | 88% | 2612 fps | 100% |
| Vihtavuori N133 | <<locked>> | 88% | 54,607 psi | 88% | 2631 fps | 100% |
| Vihtavuori N135 | <<locked>> | 92% | 55,941 psi | 90% | 2707 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 53,563 psi | 86% | 2684 fps | 100% |
| Vihtavuori N150 | <<locked>> | 96% | 53,490 psi | 86% | 2710 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 54,056 psi | 87% | 2779 fps | 99.3% |
| Vihtavuori N530 | <<locked>> | 86% | 53,621 psi | 86% | 2707 fps | 100% |
| Vihtavuori N540 | <<locked>> | 92% | 55,550 psi | 90% | 2733 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 53,330 psi | 86% | 2785 fps | 99.1% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 38,972 psi | 63% | 2612 fps | 97.5% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 55,216 psi | 89% | 2766 fps | 100% |
| Winchester 748 | <<locked>> | 86% | 53,374 psi | 86% | 2756 fps | 100% |
| Winchester 760ᴾ | <<locked>> | 100% | 55,811 psi | 90% | 2848 fps | 97.8% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 32,314 psi | 52% | 2516 fps | 96.6% |
| Winchester StaBALL Match | <<locked>> | 90% | 55,869 psi | 90% | 2789 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% | 45,687 psi | 74% | 2526 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 49,951 psi | 81% | 2635 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 38,305 psi | 62% | 2451 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 44,947 psi | 72% | 2595 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 49,617 psi | 80% | 2618 fps | 95.4% |
| Accurate 4064 | <<locked>> | 80% | 36,245 psi | 58% | 2444 fps | 99.9% |
| Accurate 4350 | <<locked>> | 88% | 34,548 psi | 56% | 2470 fps | 95.3% |
| ADI AR 2206H | <<locked>> | 80% | 42,018 psi | 68% | 2549 fps | 98.5% |
| ADI AR 2208 | <<locked>> | 80% | 35,810 psi | 58% | 2408 fps | 96.3% |
| ADI Benchmark 8208 | <<locked>> | 80% | 44,034 psi | 71% | 2559 fps | 99.6% |
| Alliant AR-Comp | <<locked>> | 80% | 43,874 psi | 71% | 2552 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 51,358 psi | 83% | 2756 fps | 99.9% |
| Alliant Power Pro 2000-MR | 29.4 gr | 80% | 37,956 psi | 61% | 2569 fps | 96.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 35,331 psi | 57% | 2428 fps | 97.8% |
| Alliant Reloder-10x | <<locked>> | 80% | 51,706 psi | 83% | 2621 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 37,811 psi | 61% | 2484 fps | 97.1% |
| Alliant Reloder-16 | <<locked>> | 88% | 35,186 psi | 57% | 2480 fps | 95.4% |
| Alliant Reloder-17 | 29 gr | 80% | 30,458 psi | 49% | 2385 fps | 95.3% |
| Alliant Reloder-23 | <<locked>> | 94% | 30,226 psi | 49% | 2382 fps | 95% |
| Alliant Reloder-26 | <<locked>> | 98% | 37,275 psi | 60% | 2615 fps | 95.3% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 41,031 psi | 66% | 2549 fps | 97.4% |
| Bofors RP3 | <<locked>> | 80% | 34,606 psi | 56% | 2428 fps | 97.8% |
| Bofors RP7 | <<locked>> | 94% | 49,313 psi | 80% | 2654 fps | 95.7% |
| Hodgdon Benchmark | <<locked>> | 80% | 45,992 psi | 74% | 2552 fps | 99.9% |
| Hodgdon BL-C2 | <<locked>> | 80% | 42,569 psi | 69% | 2579 fps | 99.7% |
| Hodgdon CFE223 | <<locked>> | 80% | 46,833 psi | 76% | 2713 fps | 99% |
| Hodgdon H322 | <<locked>> | 80% | 50,459 psi | 81% | 2657 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 51,198 psi | 83% | 2677 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 35,563 psi | 57% | 2428 fps | 95% |
| Hodgdon H414 | <<locked>> | 94% | 45,469 psi | 73% | 2680 fps | 95.6% |
| Hodgdon H4350 | <<locked>> | 94% | 49,792 psi | 80% | 2700 fps | 95% |
| Hodgdon H4895 | <<locked>> | 80% | 42,351 psi | 68% | 2562 fps | 99% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 30,153 psi | 49% | 2329 fps | 95.4% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 38,450 psi | 62% | 2536 fps | 98.7% |
| Hodgdon Superformance | <<locked>> | 96% | 49,414 psi | 80% | 2762 fps | 95.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,150 psi | 42% | 1480 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 40,654 psi | 66% | 2513 fps | 98.7% |
| IMR 3031 | <<locked>> | 80% | 41,858 psi | 68% | 2562 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 37,536 psi | 61% | 2438 fps | 97.1% |
| IMR 4166 Enduron | <<locked>> | 84% | 45,556 psi | 73% | 2562 fps | 95.4% |
| IMR 4198 | <<locked>> | 80% | 51,909 psi | 84% | 2582 fps | 100% |
| IMR 4350 | <<locked>> | 98% | 49,226 psi | 79% | 2677 fps | 95.7% |
| IMR 4451 Enduron | <<locked>> | 90% | 45,165 psi | 73% | 2585 fps | 95.2% |
| IMR 4831 | <<locked>> | 88% | 33,562 psi | 54% | 2428 fps | 95% |
| IMR 4895 | <<locked>> | 80% | 38,696 psi | 62% | 2516 fps | 97.9% |
| IMR 8208 XBR | <<locked>> | 80% | 44,034 psi | 71% | 2559 fps | 99.6% |
| Lovex D073.5 | <<locked>> | 80% | 49,632 psi | 80% | 2641 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 41,075 psi | 66% | 2536 fps | 99.9% |
| Lovex S060 | <<locked>> | 80% | 42,511 psi | 69% | 2497 fps | 98.6% |
| Lovex S062 | <<locked>> | 80% | 37,536 psi | 61% | 2448 fps | 98.7% |
| Lovex S065 | <<locked>> | 88% | 39,218 psi | 63% | 2480 fps | 95.2% |
| Lovex S070 | <<locked>> | 94% | 44,817 psi | 72% | 2608 fps | 95.5% |
| Norma 201 | <<locked>> | 80% | 41,205 psi | 66% | 2507 fps | 99.3% |
| Norma 202 | <<locked>> | 80% | 41,582 psi | 67% | 2520 fps | 100% |
| Norma 203B | <<locked>> | 80% | 37,202 psi | 60% | 2474 fps | 97.5% |
| Norma URP | <<locked>> | 88% | 35,186 psi | 57% | 2474 fps | 95.3% |
| Ramshot Big Game | <<locked>> | 80% | 36,593 psi | 59% | 2484 fps | 97.1% |
| Ramshot Hunter | <<locked>> | 94% | 41,626 psi | 67% | 2612 fps | 95.4% |
| Ramshot TAC | <<locked>> | 80% | 44,048 psi | 71% | 2566 fps | 96.7% |
| Ramshot Wild Boar | <<locked>> | 80% | 43,294 psi | 70% | 2582 fps | 98.7% |
| Ramshot X-Terminator | <<locked>> | 80% | 47,703 psi | 77% | 2608 fps | 99.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,513 psi | 43% | 1519 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 49,661 psi | 80% | 2644 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 41,321 psi | 67% | 2523 fps | 95% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 39,334 psi | 63% | 2579 fps | 97.5% |
| ReloadSwiss RS 60 | 29 gr | 80% | 32,430 psi | 52% | 2454 fps | 98.7% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 36,927 psi | 60% | 2543 fps | 95.7% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 39,697 psi | 64% | 2602 fps | 95.7% |
| Rottweil R 901 | <<locked>> | 80% | 45,005 psi | 73% | 2549 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 39,160 psi | 63% | 2461 fps | 99% |
| Rottweil R 903 | <<locked>> | 80% | 32,590 psi | 53% | 2372 fps | 96.9% |
| Rottweil R 907 | <<locked>> | 94% | 49,313 psi | 80% | 2654 fps | 95.7% |
| Shooters World Long Rifle | <<locked>> | 88% | 39,218 psi | 63% | 2480 fps | 95.2% |
| Shooters World Match Rifle | <<locked>> | 80% | 41,075 psi | 66% | 2536 fps | 99.9% |
| Shooters World Precision | <<locked>> | 80% | 37,536 psi | 61% | 2448 fps | 98.7% |
| Shooters World SW4350 | <<locked>> | 94% | 44,817 psi | 72% | 2608 fps | 95.5% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 33,562 psi | 54% | 2418 fps | 96.2% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 52,214 psi | 84% | 2638 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 42,032 psi | 68% | 2533 fps | 96.8% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 40,495 psi | 65% | 2520 fps | 98.2% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 42,656 psi | 69% | 2464 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 35,331 psi | 57% | 2339 fps | 99.9% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 43,903 psi | 71% | 2526 fps | 95% |
| Somchem S321 | <<locked>> | 80% | 47,442 psi | 77% | 2638 fps | 99.9% |
| Somchem S335 | <<locked>> | 80% | 42,221 psi | 68% | 2467 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 41,800 psi | 67% | 2536 fps | 98.4% |
| Somchem S355 | <<locked>> | 80% | 33,562 psi | 54% | 2382 fps | 96.9% |
| Somchem S365 | <<locked>> | 84% | 27,731 psi | 45% | 2320 fps | 95.8% |
| Vihtavuori N130 | <<locked>> | 80% | 48,254 psi | 78% | 2526 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 42,902 psi | 69% | 2461 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 38,450 psi | 62% | 2448 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 39,131 psi | 63% | 2454 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 31,836 psi | 51% | 2323 fps | 97.7% |
| Vihtavuori N160 | <<locked>> | 88% | 36,782 psi | 59% | 2474 fps | 95.8% |
| Vihtavuori N530 | <<locked>> | 80% | 44,034 psi | 71% | 2556 fps | 99.6% |
| Vihtavuori N540 | <<locked>> | 80% | 37,637 psi | 61% | 2444 fps | 99.8% |
| Vihtavuori N550 | <<locked>> | 88% | 36,216 psi | 58% | 2480 fps | 95.4% |
| Vihtavuori N555 | <<locked>> | 94% | 31,937 psi | 52% | 2451 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 30,458 psi | 49% | 2300 fps | 95.6% |
| Winchester 748 | <<locked>> | 80% | 43,439 psi | 70% | 2598 fps | 99.9% |
| Winchester 760 | <<locked>> | 94% | 45,469 psi | 73% | 2680 fps | 95.6% |
| Winchester StaBALL HD | <<locked>> | 98% | 30,095 psi | 49% | 2444 fps | 95.1% |
| Winchester StaBALL Match | <<locked>> | 80% | 39,827 psi | 64% | 2523 fps | 98.6% |
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 103 powders for 6 mm GT loaded with the .243 | 107gr | Nosler Custom Competition. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,894 fps; across all powders the maximum-charge window runs from 1,657 fps to 2,894 fps. Accurate 4350 gives the best case fill at 100 %, and 103 of the 103 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (427 MPa), the top charges use 52–90 %, leaving at least 10 % headroom. The 107.0 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 Power Pro 2000-MR, ReloadSwiss RS 60, Alliant Reloder-17 rank at the top here: for 6 mm GT with the .243 | 107gr | Nosler Custom Competition 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.