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:1:8.0
Load data in caliber 6 mm GT with .243 | 105gr | Berger Hybrid 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, Alliant Reloder-17 and Hodgdon Superformance.
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% | 55,564 psi | 90% | 2700 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 54,114 psi | 87% | 2730 fps | 100% |
| Accurate 2495 | <<locked>> | 90% | 54,012 psi | 87% | 2726 fps | 100% |
| Accurate 2520 | <<locked>> | 86% | 55,941 psi | 90% | 2792 fps | 100% |
| Accurate 2700 | <<locked>> | 90% | 53,751 psi | 87% | 2720 fps | 96.3% |
| Accurate 4064 | <<locked>> | 92% | 53,911 psi | 87% | 2772 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 53,040 psi | 86% | 2841 fps | 99.3% |
| ADI AR 2206H | <<locked>> | 88% | 54,926 psi | 89% | 2805 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 94% | 55,579 psi | 90% | 2799 fps | 99.7% |
| ADI Benchmark 8208 | <<locked>> | 86% | 54,099 psi | 87% | 2759 fps | 100% |
| Alliant AR-Comp | <<locked>> | 86% | 54,534 psi | 88% | 2733 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 82% | 55,448 psi | 89% | 2858 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 90% | 54,331 psi | 88% | 2917 fps | 99.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 94% | 55,651 psi | 90% | 2825 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 82% | 55,405 psi | 89% | 2707 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 90% | 52,823 psi | 85% | 2792 fps | 99.6% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 51,430 psi | 83% | 2848 fps | 99.4% |
| Alliant Reloder-17 | <<locked>> | 98% | 55,985 psi | 90% | 2940 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 36,724 psi | 59% | 2585 fps | 97.8% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 40,582 psi | 65% | 2726 fps | 96.6% |
| Baschieri & Pellagri 107 | <<locked>> | 88% | 54,679 psi | 88% | 2822 fps | 99.5% |
| Bofors RP3 | <<locked>> | 92% | 52,736 psi | 85% | 2789 fps | 100% |
| Bofors RP7 | <<locked>> | 96% | 53,026 psi | 86% | 2753 fps | 96.5% |
| Hodgdon Benchmark | <<locked>> | 86% | 55,782 psi | 90% | 2740 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 86% | 53,185 psi | 86% | 2789 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 84% | 55,114 psi | 89% | 2884 fps | 99.8% |
| Hodgdon H322 | <<locked>> | 82% | 54,433 psi | 88% | 2749 fps | 100% |
| Hodgdon H335 | <<locked>> | 82% | 55,361 psi | 89% | 2772 fps | 100% |
| Hodgdon H380 | <<locked>> | 92% | 53,650 psi | 87% | 2795 fps | 99% |
| Hodgdon H414 | <<locked>> | 98% | 52,605 psi | 85% | 2835 fps | 97.2% |
| Hodgdon H4350 | <<locked>> | 96% | 53,896 psi | 87% | 2805 fps | 96% |
| Hodgdon H4895 | <<locked>> | 88% | 55,434 psi | 89% | 2815 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 47,732 psi | 77% | 2726 fps | 99.7% |
| Hodgdon LEVERevolution | <<locked>> | 90% | 54,360 psi | 88% | 2844 fps | 100% |
| Hodgdon Superformance | <<locked>> | 98% | 53,592 psi | 86% | 2871 fps | 96.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,331 psi | 57% | 1690 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 53,272 psi | 86% | 2766 fps | 99.9% |
| IMR 3031 | <<locked>> | 88% | 54,955 psi | 89% | 2795 fps | 100% |
| IMR 4064 | <<locked>> | 92% | 55,027 psi | 89% | 2782 fps | 99.8% |
| IMR 4166 Enduron | <<locked>> | 90% | 55,506 psi | 90% | 2762 fps | 97.5% |
| IMR 4198 | <<locked>> | 82% | 55,288 psi | 89% | 2664 fps | 100% |
| IMR 4350ᴾ | <<locked>> | 100% | 53,185 psi | 86% | 2779 fps | 96.6% |
| IMR 4451 Enduron | <<locked>> | 96% | 54,868 psi | 88% | 2782 fps | 97.3% |
| IMR 4831ᴾ | <<locked>> | 100% | 50,372 psi | 81% | 2782 fps | 99.1% |
| IMR 4895 | <<locked>> | 90% | 54,143 psi | 87% | 2825 fps | 99.9% |
| IMR 8208 XBR | <<locked>> | 86% | 54,099 psi | 87% | 2759 fps | 100% |
| Lovex D073.5 | <<locked>> | 82% | 54,143 psi | 87% | 2743 fps | 100% |
| Lovex D073.6 | <<locked>> | 88% | 54,172 psi | 87% | 2779 fps | 100% |
| Lovex S060 | <<locked>> | 88% | 54,447 psi | 88% | 2730 fps | 99.9% |
| Lovex S062 | <<locked>> | 92% | 54,882 psi | 89% | 2779 fps | 100% |
| Lovex S065 | <<locked>> | 98% | 54,128 psi | 87% | 2779 fps | 98.5% |
| Lovex S070ᴾ | <<locked>> | 100% | 54,998 psi | 89% | 2812 fps | 97.7% |
| Norma 201 | <<locked>> | 88% | 53,592 psi | 86% | 2749 fps | 100% |
| Norma 202 | <<locked>> | 88% | 54,172 psi | 87% | 2756 fps | 100% |
| Norma 203B | <<locked>> | 92% | 55,347 psi | 89% | 2831 fps | 99.9% |
| Norma URPᴾ | <<locked>> | 100% | 52,649 psi | 85% | 2835 fps | 99.2% |
| Ramshot Big Game | <<locked>> | 92% | 55,738 psi | 90% | 2854 fps | 99.9% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 51,372 psi | 83% | 2825 fps | 97.8% |
| Ramshot TAC | <<locked>> | 86% | 54,389 psi | 88% | 2776 fps | 98.6% |
| Ramshot Wild Boar | <<locked>> | 86% | 53,824 psi | 87% | 2792 fps | 99.8% |
| Ramshot X-Terminator | <<locked>> | 84% | 55,071 psi | 89% | 2759 fps | 99.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,650 psi | 57% | 1729 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 53,345 psi | 86% | 2736 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 92% | 54,012 psi | 87% | 2779 fps | 97.9% |
| ReloadSwiss RS 52 | <<locked>> | 88% | 52,895 psi | 85% | 2854 fps | 99.6% |
| ReloadSwiss RS 60 | <<locked>> | 96% | 56,057 psi | 90% | 2943 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 52,576 psi | 85% | 2861 fps | 99.1% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 53,229 psi | 86% | 2894 fps | 98.9% |
| Rottweil R 901 | <<locked>> | 86% | 54,462 psi | 88% | 2730 fps | 100% |
| Rottweil R 902 | <<locked>> | 90% | 53,809 psi | 87% | 2746 fps | 100% |
| Rottweil R 903 | <<locked>> | 96% | 56,072 psi | 90% | 2831 fps | 100% |
| Rottweil R 907 | <<locked>> | 96% | 53,026 psi | 86% | 2753 fps | 96.5% |
| Shooters World Long Rifle | <<locked>> | 98% | 54,128 psi | 87% | 2779 fps | 98.5% |
| Shooters World Match Rifle | <<locked>> | 88% | 54,172 psi | 87% | 2779 fps | 100% |
| Shooters World Precision | <<locked>> | 92% | 54,882 psi | 89% | 2779 fps | 100% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 54,998 psi | 89% | 2812 fps | 97.7% |
| SNPE Vectan SP 11 | <<locked>> | 94% | 54,041 psi | 87% | 2838 fps | 99.9% |
| SNPE Vectan SP 7 | <<locked>> | 86% | 52,475 psi | 85% | 2746 fps | 98.8% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 53,200 psi | 86% | 2776 fps | 99.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 55,434 psi | 89% | 2694 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 55,288 psi | 89% | 2690 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 98% | 54,505 psi | 88% | 2730 fps | 97.3% |
| Somchem S321 | <<locked>> | 84% | 54,955 psi | 89% | 2785 fps | 100% |
| Somchem S335 | <<locked>> | 88% | 54,563 psi | 88% | 2690 fps | 100% |
| Somchem S341 | <<locked>> | 88% | 55,898 psi | 90% | 2795 fps | 99.9% |
| Somchem S355 | <<locked>> | 94% | 52,881 psi | 85% | 2776 fps | 99.9% |
| Somchem S365ᴾ | <<locked>> | 100% | 47,094 psi | 76% | 2789 fps | 100% |
| Vihtavuori N130 | <<locked>> | 84% | 54,940 psi | 89% | 2654 fps | 100% |
| Vihtavuori N133 | <<locked>> | 88% | 55,564 psi | 90% | 2677 fps | 100% |
| Vihtavuori N135 | <<locked>> | 90% | 53,751 psi | 87% | 2717 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 54,288 psi | 88% | 2726 fps | 100% |
| Vihtavuori N150 | <<locked>> | 96% | 54,534 psi | 88% | 2759 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 54,940 psi | 89% | 2825 fps | 99.4% |
| Vihtavuori N530 | <<locked>> | 86% | 54,418 psi | 88% | 2756 fps | 100% |
| Vihtavuori N540 | <<locked>> | 92% | 56,057 psi | 90% | 2772 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 54,012 psi | 87% | 2835 fps | 99.2% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 39,740 psi | 64% | 2661 fps | 97.7% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 56,101 psi | 90% | 2818 fps | 100% |
| Winchester 748 | <<locked>> | 86% | 54,056 psi | 87% | 2802 fps | 100% |
| Winchester 760 | <<locked>> | 98% | 53,069 psi | 86% | 2844 fps | 97.3% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 32,735 psi | 53% | 2562 fps | 96.9% |
| Winchester StaBALL Match | <<locked>> | 88% | 53,026 psi | 86% | 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% | 46,398 psi | 75% | 2572 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 50,865 psi | 82% | 2684 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 38,914 psi | 63% | 2497 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 45,818 psi | 74% | 2641 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 50,111 psi | 81% | 2664 fps | 95.6% |
| Accurate 4064 | <<locked>> | 80% | 36,782 psi | 59% | 2487 fps | 99.9% |
| Accurate 4350 | <<locked>> | 88% | 35,172 psi | 57% | 2513 fps | 95.5% |
| ADI AR 2206H | <<locked>> | 80% | 42,511 psi | 69% | 2595 fps | 98.6% |
| ADI AR 2208 | <<locked>> | 80% | 36,303 psi | 59% | 2451 fps | 96.4% |
| ADI Benchmark 8208 | <<locked>> | 80% | 44,527 psi | 72% | 2605 fps | 99.6% |
| Alliant AR-Comp | <<locked>> | 80% | 44,599 psi | 72% | 2595 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 52,011 psi | 84% | 2805 fps | 99.9% |
| Alliant Power Pro 2000-MR | 30.3 gr | 80% | 38,595 psi | 62% | 2615 fps | 96.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 35,839 psi | 58% | 2474 fps | 98% |
| Alliant Reloder-10x | <<locked>> | 80% | 52,025 psi | 84% | 2661 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 38,305 psi | 62% | 2530 fps | 97.3% |
| Alliant Reloder-16 | <<locked>> | 88% | 35,781 psi | 58% | 2530 fps | 95.7% |
| Alliant Reloder-17 | 29.8 gr | 80% | 30,763 psi | 50% | 2428 fps | 95.4% |
| Alliant Reloder-23 | <<locked>> | 94% | 30,618 psi | 49% | 2425 fps | 95.2% |
| Alliant Reloder-26 | <<locked>> | 98% | 37,724 psi | 61% | 2661 fps | 95.5% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 41,684 psi | 67% | 2598 fps | 97.5% |
| Bofors RP3 | <<locked>> | 80% | 35,085 psi | 57% | 2467 fps | 97.9% |
| Bofors RP7 | <<locked>> | 92% | 46,862 psi | 76% | 2648 fps | 95.1% |
| Hodgdon Benchmark | <<locked>> | 80% | 46,514 psi | 75% | 2598 fps | 99.9% |
| Hodgdon BL-C2 | <<locked>> | 80% | 43,323 psi | 70% | 2628 fps | 99.8% |
| Hodgdon CFE223 | <<locked>> | 80% | 47,601 psi | 77% | 2762 fps | 99.1% |
| Hodgdon H322 | <<locked>> | 80% | 51,053 psi | 82% | 2700 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 52,069 psi | 84% | 2726 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 36,318 psi | 59% | 2477 fps | 95.2% |
| Hodgdon H414 | <<locked>> | 92% | 43,511 psi | 70% | 2677 fps | 95% |
| Hodgdon H4350 | <<locked>> | 94% | 50,647 psi | 82% | 2753 fps | 95.3% |
| Hodgdon H4895 | <<locked>> | 80% | 42,873 psi | 69% | 2605 fps | 99.1% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 30,748 psi | 50% | 2375 fps | 95.6% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 38,841 psi | 63% | 2575 fps | 98.8% |
| Hodgdon Superformance | 37 gr | 94% | 46,412 psi | 75% | 2746 fps | 95% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,295 psi | 42% | 1509 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 41,118 psi | 66% | 2559 fps | 98.7% |
| IMR 3031 | <<locked>> | 80% | 42,583 psi | 69% | 2608 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 38,087 psi | 61% | 2484 fps | 97.3% |
| IMR 4166 Enduron | <<locked>> | 84% | 46,238 psi | 75% | 2612 fps | 95.6% |
| IMR 4198 | <<locked>> | 80% | 52,301 psi | 84% | 2625 fps | 100% |
| IMR 4350 | <<locked>> | 96% | 46,601 psi | 75% | 2667 fps | 95% |
| IMR 4451 Enduron | <<locked>> | 90% | 45,745 psi | 74% | 2631 fps | 95.3% |
| IMR 4831 | <<locked>> | 88% | 34,142 psi | 55% | 2474 fps | 95.2% |
| IMR 4895 | <<locked>> | 80% | 39,204 psi | 63% | 2559 fps | 98.1% |
| IMR 8208 XBR | <<locked>> | 80% | 44,527 psi | 72% | 2605 fps | 99.6% |
| Lovex D073.5 | <<locked>> | 80% | 50,430 psi | 81% | 2690 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 41,553 psi | 67% | 2579 fps | 99.9% |
| Lovex S060 | <<locked>> | 80% | 43,047 psi | 69% | 2539 fps | 98.7% |
| Lovex S062 | <<locked>> | 80% | 38,087 psi | 61% | 2490 fps | 98.8% |
| Lovex S065 | <<locked>> | 88% | 39,871 psi | 64% | 2526 fps | 95.4% |
| Lovex S070 | <<locked>> | 94% | 45,687 psi | 74% | 2657 fps | 95.8% |
| Norma 201 | <<locked>> | 80% | 41,742 psi | 67% | 2552 fps | 99.3% |
| Norma 202 | <<locked>> | 80% | 42,105 psi | 68% | 2566 fps | 100% |
| Norma 203B | <<locked>> | 80% | 37,666 psi | 61% | 2516 fps | 97.6% |
| Norma URP | <<locked>> | 88% | 35,462 psi | 57% | 2513 fps | 95.4% |
| Ramshot Big Game | <<locked>> | 80% | 37,260 psi | 60% | 2533 fps | 97.3% |
| Ramshot Hunter | <<locked>> | 94% | 42,308 psi | 68% | 2661 fps | 95.6% |
| Ramshot TAC | <<locked>> | 80% | 44,715 psi | 72% | 2612 fps | 96.9% |
| Ramshot Wild Boar | <<locked>> | 80% | 44,019 psi | 71% | 2631 fps | 98.9% |
| Ramshot X-Terminator | <<locked>> | 80% | 48,428 psi | 78% | 2657 fps | 99.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,643 psi | 43% | 1549 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 50,125 psi | 81% | 2687 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 41,930 psi | 68% | 2566 fps | 95.1% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 40,190 psi | 65% | 2631 fps | 97.7% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 32,735 psi | 53% | 2493 fps | 98.7% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 35,085 psi | 57% | 2530 fps | 95% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 37,942 psi | 61% | 2595 fps | 95% |
| Rottweil R 901 | <<locked>> | 80% | 45,672 psi | 74% | 2595 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 39,726 psi | 64% | 2503 fps | 99% |
| Rottweil R 903 | <<locked>> | 80% | 33,083 psi | 53% | 2415 fps | 97% |
| Rottweil R 907 | <<locked>> | 92% | 46,862 psi | 76% | 2648 fps | 95.1% |
| Shooters World Long Rifle | <<locked>> | 88% | 39,871 psi | 64% | 2526 fps | 95.4% |
| Shooters World Match Rifle | <<locked>> | 80% | 41,553 psi | 67% | 2579 fps | 99.9% |
| Shooters World Precision | <<locked>> | 80% | 38,087 psi | 61% | 2490 fps | 98.8% |
| Shooters World SW4350 | <<locked>> | 94% | 45,687 psi | 74% | 2657 fps | 95.8% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 34,229 psi | 55% | 2467 fps | 96.4% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 42,728 psi | 69% | 2582 fps | 97% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 41,278 psi | 67% | 2569 fps | 98.4% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 43,308 psi | 70% | 2510 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 35,882 psi | 58% | 2382 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 44,875 psi | 72% | 2575 fps | 95.3% |
| Somchem S321 | <<locked>> | 80% | 48,196 psi | 78% | 2684 fps | 99.9% |
| Somchem S335 | <<locked>> | 80% | 42,772 psi | 69% | 2510 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 42,482 psi | 69% | 2582 fps | 98.5% |
| Somchem S355 | <<locked>> | 80% | 34,055 psi | 55% | 2425 fps | 97% |
| Somchem S365 | <<locked>> | 82% | 26,324 psi | 42% | 2303 fps | 95% |
| Vihtavuori N130 | <<locked>> | 80% | 48,907 psi | 79% | 2572 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 43,555 psi | 70% | 2507 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 39,117 psi | 63% | 2493 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 39,653 psi | 64% | 2497 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 32,300 psi | 52% | 2362 fps | 97.8% |
| Vihtavuori N160 | <<locked>> | 86% | 35,056 psi | 57% | 2467 fps | 95.2% |
| Vihtavuori N530 | <<locked>> | 80% | 44,541 psi | 72% | 2598 fps | 99.7% |
| Vihtavuori N540 | <<locked>> | 80% | 38,450 psi | 62% | 2493 fps | 99.9% |
| Vihtavuori N550 | <<locked>> | 88% | 36,767 psi | 59% | 2523 fps | 95.6% |
| Vihtavuori N555 | <<locked>> | 94% | 32,721 psi | 53% | 2500 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 30,893 psi | 50% | 2343 fps | 95.8% |
| Winchester 748 | <<locked>> | 80% | 44,295 psi | 71% | 2648 fps | 99.9% |
| Winchester 760 | <<locked>> | 92% | 43,511 psi | 70% | 2677 fps | 95% |
| Winchester StaBALL HD | <<locked>> | 98% | 30,806 psi | 50% | 2500 fps | 95.7% |
| Winchester StaBALL Match | <<locked>> | 80% | 40,553 psi | 65% | 2572 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 Hybrid 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 1:8.0 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, Alliant Reloder-17, Hodgdon Superformance rank at the top here: for 6 mm GT with the .243 | 105gr | Berger Hybrid 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.