Load Specifications
Bullet Manufacturer:Nosler
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:1:8.5
Load data in caliber 6 mm GT with .243 | 105gr | 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% | 54,926 psi | 89% | 2687 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 53,563 psi | 86% | 2717 fps | 100% |
| Accurate 2495 | <<locked>> | 90% | 52,910 psi | 85% | 2707 fps | 100% |
| Accurate 2520 | <<locked>> | 86% | 55,434 psi | 89% | 2779 fps | 100% |
| Accurate 2700 | <<locked>> | 90% | 52,939 psi | 85% | 2700 fps | 96% |
| Accurate 4064 | <<locked>> | 92% | 52,852 psi | 85% | 2753 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 52,054 psi | 84% | 2818 fps | 99.1% |
| ADI AR 2206H | <<locked>> | 88% | 53,954 psi | 87% | 2782 fps | 99.8% |
| ADI AR 2208 | <<locked>> | 94% | 55,158 psi | 89% | 2785 fps | 99.6% |
| ADI Benchmark 8208 | <<locked>> | 86% | 53,098 psi | 86% | 2736 fps | 100% |
| Alliant AR-Comp | <<locked>> | 86% | 53,359 psi | 86% | 2713 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 82% | 54,737 psi | 88% | 2838 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 90% | 53,447 psi | 86% | 2897 fps | 99.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 94% | 54,723 psi | 88% | 2805 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 82% | 54,694 psi | 88% | 2694 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 92% | 55,216 psi | 89% | 2822 fps | 99.7% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 50,647 psi | 82% | 2825 fps | 99.2% |
| Alliant Reloder-17 | <<locked>> | 98% | 55,201 psi | 89% | 2920 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 36,129 psi | 58% | 2562 fps | 97.4% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 40,016 psi | 65% | 2707 fps | 96.2% |
| Baschieri & Pellagri 107 | <<locked>> | 88% | 53,853 psi | 87% | 2799 fps | 99.4% |
| Bofors RP3 | <<locked>> | 94% | 55,259 psi | 89% | 2822 fps | 100% |
| Bofors RP7 | <<locked>> | 98% | 55,622 psi | 90% | 2782 fps | 96.9% |
| Hodgdon Benchmark | <<locked>> | 86% | 55,288 psi | 89% | 2726 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 88% | 55,637 psi | 90% | 2815 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 84% | 54,070 psi | 87% | 2861 fps | 99.7% |
| Hodgdon H322 | <<locked>> | 82% | 53,795 psi | 87% | 2733 fps | 100% |
| Hodgdon H335 | <<locked>> | 82% | 54,853 psi | 88% | 2759 fps | 100% |
| Hodgdon H380 | <<locked>> | 92% | 52,707 psi | 85% | 2776 fps | 98.8% |
| Hodgdon H414ᴾ | <<locked>> | 100% | 55,187 psi | 89% | 2867 fps | 97.6% |
| Hodgdon H4895 | <<locked>> | 88% | 54,433 psi | 88% | 2792 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 46,905 psi | 76% | 2710 fps | 99.5% |
| Hodgdon LEVERevolution | <<locked>> | 90% | 53,403 psi | 86% | 2822 fps | 100% |
| Hodgdon Superformance | <<locked>> | 98% | 53,011 psi | 86% | 2854 fps | 96.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,157 psi | 57% | 1680 fps | 100% |
| Hodgdon VARGET | <<locked>> | 90% | 55,724 psi | 90% | 2795 fps | 100% |
| IMR 3031 | <<locked>> | 88% | 54,273 psi | 88% | 2779 fps | 100% |
| IMR 4064 | <<locked>> | 92% | 54,578 psi | 88% | 2766 fps | 99.7% |
| IMR 4166 Enduron | <<locked>> | 90% | 54,650 psi | 88% | 2743 fps | 97.2% |
| IMR 4198 | <<locked>> | 82% | 55,071 psi | 89% | 2654 fps | 100% |
| IMR 4350ᴾ | <<locked>> | 100% | 51,938 psi | 84% | 2749 fps | 96.2% |
| IMR 4451 Enduron | <<locked>> | 96% | 54,085 psi | 87% | 2762 fps | 97.1% |
| IMR 4831ᴾ | <<locked>> | 100% | 49,516 psi | 80% | 2762 fps | 98.9% |
| IMR 4895 | <<locked>> | 90% | 53,200 psi | 86% | 2802 fps | 99.8% |
| IMR 8208 XBR | <<locked>> | 86% | 53,098 psi | 86% | 2736 fps | 100% |
| Lovex D073.5 | <<locked>> | 82% | 53,171 psi | 86% | 2723 fps | 100% |
| Lovex D073.6 | <<locked>> | 88% | 53,664 psi | 87% | 2766 fps | 100% |
| Lovex S060 | <<locked>> | 88% | 53,998 psi | 87% | 2717 fps | 99.8% |
| Lovex S062 | <<locked>> | 92% | 54,389 psi | 88% | 2766 fps | 100% |
| Lovex S065 | <<locked>> | 98% | 53,374 psi | 86% | 2759 fps | 98.3% |
| Lovex S070ᴾ | <<locked>> | 100% | 54,215 psi | 87% | 2792 fps | 97.5% |
| Norma 201 | <<locked>> | 90% | 56,014 psi | 90% | 2779 fps | 100% |
| Norma 202 | <<locked>> | 88% | 53,142 psi | 86% | 2733 fps | 100% |
| Norma 203B | <<locked>> | 92% | 54,375 psi | 88% | 2808 fps | 99.9% |
| Norma URPᴾ | <<locked>> | 100% | 51,808 psi | 84% | 2815 fps | 99.1% |
| Ramshot Big Game | <<locked>> | 92% | 54,853 psi | 88% | 2835 fps | 99.8% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 50,691 psi | 82% | 2808 fps | 97.5% |
| Ramshot TAC | <<locked>> | 86% | 53,548 psi | 86% | 2753 fps | 98.4% |
| Ramshot Wild Boar | <<locked>> | 86% | 52,910 psi | 85% | 2772 fps | 99.7% |
| Ramshot X-Terminator | <<locked>> | 84% | 54,143 psi | 87% | 2740 fps | 99.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,462 psi | 57% | 1719 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 52,779 psi | 85% | 2723 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 92% | 53,258 psi | 86% | 2759 fps | 97.6% |
| ReloadSwiss RS 52 | <<locked>> | 90% | 55,941 psi | 90% | 2894 fps | 99.8% |
| ReloadSwiss RS 60 | <<locked>> | 96% | 55,259 psi | 89% | 2927 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 51,764 psi | 83% | 2841 fps | 99% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 52,112 psi | 84% | 2867 fps | 98.7% |
| Rottweil R 901 | <<locked>> | 86% | 53,853 psi | 87% | 2717 fps | 100% |
| Rottweil R 902 | <<locked>> | 90% | 53,301 psi | 86% | 2730 fps | 100% |
| Rottweil R 903 | <<locked>> | 96% | 55,114 psi | 89% | 2808 fps | 100% |
| Rottweil R 907 | <<locked>> | 98% | 55,622 psi | 90% | 2782 fps | 96.9% |
| Shooters World Long Rifle | <<locked>> | 98% | 53,374 psi | 86% | 2759 fps | 98.3% |
| Shooters World Match Rifle | <<locked>> | 88% | 53,664 psi | 87% | 2766 fps | 100% |
| Shooters World Precision | <<locked>> | 92% | 54,389 psi | 88% | 2766 fps | 100% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 54,215 psi | 87% | 2792 fps | 97.5% |
| Shooters World Tactical Rifle | <<locked>> | 82% | 55,912 psi | 90% | 2743 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 94% | 53,171 psi | 86% | 2818 fps | 99.8% |
| SNPE Vectan SP 3 | <<locked>> | 82% | 55,840 psi | 90% | 2717 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 88% | 55,506 psi | 90% | 2785 fps | 99.1% |
| SNPE Vectan SP 9 | <<locked>> | 90% | 56,101 psi | 90% | 2808 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 54,882 psi | 89% | 2680 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 54,331 psi | 88% | 2671 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 98% | 53,693 psi | 87% | 2710 fps | 97% |
| Somchem S321 | <<locked>> | 84% | 54,505 psi | 88% | 2772 fps | 100% |
| Somchem S335 | <<locked>> | 88% | 54,070 psi | 87% | 2677 fps | 100% |
| Somchem S341 | <<locked>> | 88% | 54,984 psi | 89% | 2779 fps | 99.8% |
| Somchem S355 | <<locked>> | 96% | 55,376 psi | 89% | 2805 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 45,861 psi | 74% | 2759 fps | 100% |
| Vihtavuori N130 | <<locked>> | 84% | 54,346 psi | 88% | 2641 fps | 100% |
| Vihtavuori N133 | <<locked>> | 88% | 54,984 psi | 89% | 2664 fps | 100% |
| Vihtavuori N135 | <<locked>> | 90% | 52,663 psi | 85% | 2697 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 53,809 psi | 87% | 2717 fps | 100% |
| Vihtavuori N150 | <<locked>> | 96% | 53,621 psi | 86% | 2743 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 54,041 psi | 87% | 2808 fps | 99.2% |
| Vihtavuori N530 | <<locked>> | 86% | 53,896 psi | 87% | 2743 fps | 100% |
| Vihtavuori N540 | <<locked>> | 92% | 55,201 psi | 89% | 2756 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 53,243 psi | 86% | 2818 fps | 99% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 38,580 psi | 62% | 2631 fps | 97.3% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 55,013 psi | 89% | 2792 fps | 100% |
| Winchester 748 | <<locked>> | 86% | 53,084 psi | 86% | 2782 fps | 100% |
| Winchester 760ᴾ | <<locked>> | 100% | 55,767 psi | 90% | 2877 fps | 97.7% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 32,271 psi | 52% | 2539 fps | 96.4% |
| Winchester StaBALL Match | <<locked>> | 90% | 55,492 psi | 90% | 2812 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% | 45,730 psi | 74% | 2556 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 49,806 psi | 80% | 2664 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 38,290 psi | 62% | 2480 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 44,802 psi | 72% | 2621 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 49,763 psi | 80% | 2648 fps | 95.3% |
| Accurate 4064 | <<locked>> | 80% | 36,201 psi | 58% | 2470 fps | 99.8% |
| Accurate 4350 | <<locked>> | 88% | 34,345 psi | 55% | 2490 fps | 95.1% |
| ADI AR 2206H | <<locked>> | 80% | 41,989 psi | 68% | 2579 fps | 98.5% |
| ADI AR 2208 | <<locked>> | 80% | 35,810 psi | 58% | 2434 fps | 96.2% |
| ADI Benchmark 8208 | <<locked>> | 80% | 43,990 psi | 71% | 2589 fps | 99.5% |
| Alliant AR-Comp | <<locked>> | 80% | 43,874 psi | 71% | 2582 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 51,300 psi | 83% | 2785 fps | 99.9% |
| Alliant Power Pro 2000-MR | 29.9 gr | 80% | 38,189 psi | 62% | 2598 fps | 96.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 35,317 psi | 57% | 2457 fps | 97.7% |
| Alliant Reloder-10x | <<locked>> | 80% | 51,285 psi | 83% | 2644 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 37,753 psi | 61% | 2510 fps | 97% |
| Alliant Reloder-16 | <<locked>> | 88% | 35,099 psi | 57% | 2503 fps | 95.2% |
| Alliant Reloder-17 | 29.4 gr | 80% | 30,371 psi | 49% | 2408 fps | 95.1% |
| Alliant Reloder-23 | <<locked>> | 96% | 31,952 psi | 52% | 2454 fps | 95.7% |
| Alliant Reloder-26 | <<locked>> | 98% | 37,173 psi | 60% | 2638 fps | 95.1% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 41,220 psi | 66% | 2582 fps | 97.3% |
| Bofors RP3 | <<locked>> | 80% | 34,548 psi | 56% | 2454 fps | 97.7% |
| Bofors RP7 | <<locked>> | 94% | 49,037 psi | 79% | 2677 fps | 95.5% |
| Hodgdon Benchmark | <<locked>> | 80% | 45,992 psi | 74% | 2582 fps | 99.9% |
| Hodgdon BL-C2 | <<locked>> | 80% | 42,801 psi | 69% | 2612 fps | 99.7% |
| Hodgdon CFE223 | <<locked>> | 80% | 47,036 psi | 76% | 2749 fps | 99% |
| Hodgdon H322 | <<locked>> | 80% | 50,401 psi | 81% | 2687 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 51,039 psi | 82% | 2707 fps | 100% |
| Hodgdon H380 | <<locked>> | 82% | 38,232 psi | 62% | 2513 fps | 95.7% |
| Hodgdon H414 | <<locked>> | 94% | 45,527 psi | 73% | 2707 fps | 95.4% |
| Hodgdon H4895 | <<locked>> | 80% | 42,308 psi | 68% | 2589 fps | 98.9% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 30,081 psi | 49% | 2352 fps | 95.2% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 38,377 psi | 62% | 2559 fps | 98.6% |
| Hodgdon Superformance | <<locked>> | 96% | 49,255 psi | 79% | 2789 fps | 95.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,020 psi | 42% | 1499 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 40,625 psi | 66% | 2543 fps | 98.6% |
| IMR 3031 | <<locked>> | 80% | 41,901 psi | 68% | 2592 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 37,565 psi | 61% | 2464 fps | 97% |
| IMR 4166 Enduron | <<locked>> | 84% | 45,440 psi | 73% | 2585 fps | 95.2% |
| IMR 4198 | <<locked>> | 80% | 51,590 psi | 83% | 2608 fps | 100% |
| IMR 4350 | <<locked>> | 98% | 48,791 psi | 79% | 2700 fps | 95.5% |
| IMR 4451 Enduron | <<locked>> | 90% | 45,368 psi | 73% | 2618 fps | 95.1% |
| IMR 4831 | <<locked>> | 90% | 35,679 psi | 58% | 2503 fps | 95.7% |
| IMR 4895 | <<locked>> | 80% | 38,667 psi | 62% | 2543 fps | 97.8% |
| IMR 8208 XBR | <<locked>> | 80% | 43,990 psi | 71% | 2589 fps | 99.5% |
| Lovex D073.5 | <<locked>> | 80% | 49,908 psi | 80% | 2674 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 40,944 psi | 66% | 2562 fps | 99.9% |
| Lovex S060 | <<locked>> | 80% | 42,525 psi | 69% | 2523 fps | 98.6% |
| Lovex S062 | <<locked>> | 80% | 37,550 psi | 61% | 2474 fps | 98.6% |
| Lovex S065 | <<locked>> | 88% | 39,421 psi | 64% | 2510 fps | 95.1% |
| Lovex S070 | <<locked>> | 94% | 44,918 psi | 72% | 2638 fps | 95.4% |
| Norma 201 | <<locked>> | 80% | 41,191 psi | 66% | 2533 fps | 99.2% |
| Norma 202 | <<locked>> | 80% | 41,539 psi | 67% | 2549 fps | 100% |
| Norma 203B | <<locked>> | 80% | 37,173 psi | 60% | 2500 fps | 97.4% |
| Norma URP | <<locked>> | 88% | 35,041 psi | 57% | 2497 fps | 95.1% |
| Ramshot Big Game | <<locked>> | 80% | 36,796 psi | 59% | 2516 fps | 97.1% |
| Ramshot Hunter | <<locked>> | 94% | 41,626 psi | 67% | 2638 fps | 95.2% |
| Ramshot TAC | <<locked>> | 80% | 43,918 psi | 71% | 2589 fps | 96.6% |
| Ramshot Wild Boar | <<locked>> | 80% | 43,120 psi | 70% | 2608 fps | 98.6% |
| Ramshot X-Terminator | <<locked>> | 80% | 47,601 psi | 77% | 2635 fps | 99.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,368 psi | 43% | 1535 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 49,559 psi | 80% | 2674 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 43,787 psi | 71% | 2595 fps | 95.5% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 39,218 psi | 63% | 2605 fps | 97.4% |
| ReloadSwiss RS 60 | 29.4 gr | 80% | 32,329 psi | 52% | 2477 fps | 98.5% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 36,666 psi | 59% | 2562 fps | 95.5% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 39,740 psi | 64% | 2628 fps | 95.5% |
| Rottweil R 901 | <<locked>> | 80% | 45,078 psi | 73% | 2579 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 39,218 psi | 63% | 2487 fps | 98.9% |
| Rottweil R 903 | <<locked>> | 80% | 32,547 psi | 52% | 2398 fps | 96.7% |
| Rottweil R 907 | <<locked>> | 94% | 49,037 psi | 79% | 2677 fps | 95.5% |
| Shooters World Long Rifle | <<locked>> | 88% | 39,421 psi | 64% | 2510 fps | 95.1% |
| Shooters World Match Rifle | <<locked>> | 80% | 40,944 psi | 66% | 2562 fps | 99.9% |
| Shooters World Precision | <<locked>> | 80% | 37,550 psi | 61% | 2474 fps | 98.6% |
| Shooters World SW4350 | <<locked>> | 94% | 44,918 psi | 72% | 2638 fps | 95.4% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 52,460 psi | 85% | 2694 fps | 99.9% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 33,489 psi | 54% | 2444 fps | 96% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 52,286 psi | 84% | 2671 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 42,264 psi | 68% | 2566 fps | 96.8% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 40,451 psi | 65% | 2546 fps | 98.1% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 42,714 psi | 69% | 2497 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 35,360 psi | 57% | 2365 fps | 99.9% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 47,065 psi | 76% | 2608 fps | 95.7% |
| Somchem S321 | <<locked>> | 80% | 47,688 psi | 77% | 2671 fps | 99.9% |
| Somchem S335 | <<locked>> | 80% | 42,235 psi | 68% | 2497 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 42,018 psi | 68% | 2566 fps | 98.4% |
| Somchem S355 | <<locked>> | 80% | 33,547 psi | 54% | 2408 fps | 96.8% |
| Somchem S365 | <<locked>> | 84% | 27,673 psi | 45% | 2343 fps | 95.6% |
| Vihtavuori N130 | <<locked>> | 80% | 48,312 psi | 78% | 2556 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 42,931 psi | 69% | 2490 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 38,493 psi | 62% | 2477 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 39,117 psi | 63% | 2480 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 31,821 psi | 51% | 2346 fps | 97.6% |
| Vihtavuori N160 | <<locked>> | 88% | 36,622 psi | 59% | 2497 fps | 95.6% |
| Vihtavuori N530 | <<locked>> | 80% | 43,976 psi | 71% | 2585 fps | 99.6% |
| Vihtavuori N540 | <<locked>> | 80% | 37,608 psi | 61% | 2470 fps | 99.8% |
| Vihtavuori N550 | <<locked>> | 88% | 35,998 psi | 58% | 2500 fps | 95.2% |
| Vihtavuori N555 | <<locked>> | 96% | 34,171 psi | 55% | 2533 fps | 95.8% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 30,327 psi | 49% | 2320 fps | 95.3% |
| Winchester 748 | <<locked>> | 80% | 43,337 psi | 70% | 2628 fps | 99.8% |
| Winchester 760 | <<locked>> | 94% | 45,527 psi | 73% | 2707 fps | 95.4% |
| Winchester StaBALL HD | <<locked>> | 98% | 30,327 psi | 49% | 2477 fps | 95.1% |
| Winchester StaBALL Match | <<locked>> | 80% | 39,726 psi | 64% | 2549 fps | 98.5% |
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 | 105gr | Nosler Custom Competition. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,927 fps; across all powders the maximum-charge window runs from 1,680 fps to 2,927 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 105.0 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 | 105gr | 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.