Load Specifications
Bullet Manufacturer:ShellHouse Castings
Bullet Weight:95 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:1:12.0
Load data in caliber 6 mm GT with .243 | 95gr | ShellHouse Castings SP Hard Cast bullet and 101 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 60, Alliant Power Pro 2000-MR and ReloadSwiss RS 52.
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>> | 88% | 55,782 psi | 90% | 2884 fps | 100% |
| Accurate 2460 | <<locked>> | 84% | 54,012 psi | 87% | 2907 fps | 100% |
| Accurate 2495 | <<locked>> | 92% | 52,808 psi | 85% | 2890 fps | 100% |
| Accurate 2520 | <<locked>> | 88% | 54,085 psi | 87% | 2953 fps | 100% |
| Accurate 2700 | <<locked>> | 96% | 55,100 psi | 89% | 2894 fps | 96% |
| Accurate 4064 | <<locked>> | 94% | 52,634 psi | 85% | 2933 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 49,342 psi | 80% | 2953 fps | 98.5% |
| Accurate LT-30 | <<locked>> | 82% | 52,794 psi | 85% | 2762 fps | 100% |
| Accurate LT-32 | <<locked>> | 82% | 53,229 psi | 86% | 2789 fps | 100% |
| ADI AR 2206H | <<locked>> | 90% | 55,158 psi | 89% | 2986 fps | 99.7% |
| ADI AR 2208 | <<locked>> | 94% | 52,649 psi | 85% | 2923 fps | 99.2% |
| ADI Benchmark 8208 | <<locked>> | 88% | 54,244 psi | 87% | 2936 fps | 100% |
| Alliant AR-Comp | <<locked>> | 88% | 54,288 psi | 88% | 2913 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 84% | 52,489 psi | 85% | 2963 fps | 99.6% |
| Alliant Power Pro 2000-MR | <<locked>> | 92% | 54,926 psi | 89% | 3100 fps | 99.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 96% | 55,825 psi | 90% | 3002 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 84% | 55,434 psi | 89% | 2887 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 92% | 52,707 psi | 85% | 2963 fps | 99.3% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 48,646 psi | 78% | 2966 fps | 98.6% |
| Alliant Reloder-17 | <<locked>> | 98% | 52,837 psi | 85% | 3061 fps | 99.9% |
| Baschieri & Pellagri 106 | <<locked>> | 82% | 54,621 psi | 88% | 2825 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 90% | 55,317 psi | 89% | 2999 fps | 99.3% |
| Bofors RP3 | <<locked>> | 96% | 55,753 psi | 90% | 3009 fps | 100% |
| Bofors RP7 | <<locked>> | 98% | 53,040 psi | 86% | 2920 fps | 95.9% |
| Hodgdon Benchmark | <<locked>> | 86% | 53,113 psi | 86% | 2874 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 88% | 53,243 psi | 86% | 2963 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 86% | 55,477 psi | 89% | 3068 fps | 99.6% |
| Hodgdon H322 | <<locked>> | 84% | 55,216 psi | 89% | 2936 fps | 100% |
| Hodgdon H335 | <<locked>> | 82% | 52,533 psi | 85% | 2910 fps | 100% |
| Hodgdon H380 | <<locked>> | 94% | 53,954 psi | 87% | 2972 fps | 98.7% |
| Hodgdon H414ᴾ | <<locked>> | 100% | 53,316 psi | 86% | 3015 fps | 96.7% |
| Hodgdon H4895 | <<locked>> | 90% | 55,695 psi | 90% | 2995 fps | 99.9% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 44,382 psi | 72% | 2831 fps | 98.9% |
| Hodgdon LEVERevolution | <<locked>> | 92% | 54,897 psi | 89% | 3025 fps | 100% |
| Hodgdon Superformanceᴾ | <<locked>> | 100% | 54,723 psi | 88% | 3051 fps | 96.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,737 psi | 56% | 1804 fps | 100% |
| Hodgdon VARGET | <<locked>> | 90% | 53,882 psi | 87% | 2949 fps | 99.8% |
| IMR 3031 | <<locked>> | 90% | 55,027 psi | 89% | 2976 fps | 100% |
| IMR 4064 | <<locked>> | 94% | 55,448 psi | 89% | 2959 fps | 99.6% |
| IMR 4166 Enduron | <<locked>> | 90% | 52,678 psi | 85% | 2884 fps | 96.4% |
| IMR 4198 | <<locked>> | 84% | 55,985 psi | 90% | 2851 fps | 100% |
| IMR 4451 Enduronᴾ | <<locked>> | 100% | 55,448 psi | 89% | 2923 fps | 96.3% |
| IMR 4831ᴾ | <<locked>> | 100% | 46,833 psi | 76% | 2890 fps | 98.1% |
| IMR 4895 | <<locked>> | 92% | 54,070 psi | 87% | 2999 fps | 99.7% |
| IMR 8208 XBR | <<locked>> | 88% | 54,244 psi | 87% | 2936 fps | 100% |
| Lovex D073.5 | <<locked>> | 84% | 53,867 psi | 87% | 2913 fps | 100% |
| Lovex D073.6 | <<locked>> | 90% | 54,085 psi | 87% | 2953 fps | 100% |
| Lovex S060 | <<locked>> | 90% | 55,347 psi | 89% | 2917 fps | 99.8% |
| Lovex S062 | <<locked>> | 94% | 54,795 psi | 88% | 2953 fps | 100% |
| Lovex S065ᴾ | <<locked>> | 100% | 53,896 psi | 87% | 2943 fps | 98% |
| Lovex S070ᴾ | <<locked>> | 100% | 51,605 psi | 83% | 2927 fps | 96.5% |
| Norma 201 | <<locked>> | 90% | 53,200 psi | 86% | 2920 fps | 100% |
| Norma 202 | <<locked>> | 90% | 54,041 psi | 87% | 2930 fps | 100% |
| Norma 203B | <<locked>> | 94% | 55,550 psi | 90% | 3009 fps | 99.8% |
| Norma URPᴾ | <<locked>> | 100% | 49,284 psi | 79% | 2949 fps | 98.4% |
| Ramshot Big Game | <<locked>> | 92% | 52,634 psi | 85% | 2979 fps | 99.5% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 48,283 psi | 78% | 2936 fps | 96.5% |
| Ramshot TAC | <<locked>> | 88% | 54,766 psi | 88% | 2949 fps | 98.3% |
| Ramshot Wild Boar | <<locked>> | 88% | 54,172 psi | 87% | 2972 fps | 99.7% |
| Ramshot X-Terminator | <<locked>> | 86% | 55,753 psi | 90% | 2943 fps | 99.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,809 psi | 56% | 1841 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 84% | 53,751 psi | 87% | 2917 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 94% | 54,433 psi | 88% | 2953 fps | 97.4% |
| ReloadSwiss RS 52 | <<locked>> | 90% | 53,156 psi | 86% | 3035 fps | 99.4% |
| ReloadSwiss RS 60 | <<locked>> | 96% | 52,678 psi | 85% | 3068 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 49,269 psi | 79% | 2976 fps | 98.2% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 49,879 psi | 80% | 2999 fps | 97.9% |
| Rottweil R 901 | <<locked>> | 88% | 54,143 psi | 87% | 2907 fps | 100% |
| Rottweil R 902 | <<locked>> | 92% | 53,838 psi | 87% | 2920 fps | 100% |
| Rottweil R 903 | <<locked>> | 98% | 55,637 psi | 90% | 2999 fps | 100% |
| Rottweil R 907 | <<locked>> | 98% | 53,040 psi | 86% | 2920 fps | 95.9% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 53,896 psi | 87% | 2943 fps | 98% |
| Shooters World Match Rifle | <<locked>> | 90% | 54,085 psi | 87% | 2953 fps | 100% |
| Shooters World Precision | <<locked>> | 94% | 54,795 psi | 88% | 2953 fps | 100% |
| Shooters World Tactical Rifle | <<locked>> | 82% | 53,693 psi | 87% | 2890 fps | 99.9% |
| SNPE Vectan SP 11 | <<locked>> | 96% | 54,273 psi | 88% | 3012 fps | 99.7% |
| SNPE Vectan SP 3 | <<locked>> | 84% | 53,388 psi | 86% | 2841 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 88% | 52,504 psi | 85% | 2917 fps | 98.4% |
| SNPE Vectan SP 9 | <<locked>> | 90% | 53,635 psi | 87% | 2953 fps | 99.6% |
| SNPE Vectan Tubal 3000 | <<locked>> | 90% | 55,579 psi | 90% | 2871 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 96% | 55,883 psi | 90% | 2867 fps | 100% |
| SNPE Vectan Tubal 7000ᴾ | <<locked>> | 100% | 54,665 psi | 88% | 2897 fps | 96.8% |
| Somchem S321 | <<locked>> | 86% | 55,376 psi | 89% | 2969 fps | 100% |
| Somchem S335 | <<locked>> | 90% | 54,476 psi | 88% | 2864 fps | 100% |
| Somchem S341 | <<locked>> | 88% | 52,721 psi | 85% | 2920 fps | 99.5% |
| Somchem S355 | <<locked>> | 96% | 52,895 psi | 85% | 2949 fps | 99.8% |
| Somchem S365ᴾ | <<locked>> | 100% | 43,671 psi | 70% | 2890 fps | 99.7% |
| Unknown powderᴾ | <<locked>> | 100% | 54,186 psi | 87% | 3018 fps | 98.6% |
| Vihtavuori N130 | <<locked>> | 86% | 55,448 psi | 89% | 2838 fps | 100% |
| Vihtavuori N133 | <<locked>> | 90% | 55,753 psi | 90% | 2854 fps | 100% |
| Vihtavuori N135 | <<locked>> | 94% | 53,040 psi | 86% | 2861 fps | 100% |
| Vihtavuori N140 | <<locked>> | 92% | 55,013 psi | 89% | 2913 fps | 100% |
| Vihtavuori N150 | <<locked>> | 98% | 54,418 psi | 88% | 2930 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 51,982 psi | 84% | 2949 fps | 98.7% |
| Vihtavuori N530 | <<locked>> | 88% | 54,955 psi | 89% | 2940 fps | 100% |
| Vihtavuori N540 | <<locked>> | 92% | 52,953 psi | 85% | 2904 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 50,763 psi | 82% | 2949 fps | 98.4% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 52,736 psi | 85% | 2933 fps | 99.9% |
| Winchester 748 | <<locked>> | 88% | 54,578 psi | 88% | 2986 fps | 100% |
| Winchester 760ᴾ | <<locked>> | 100% | 53,316 psi | 86% | 3015 fps | 96.7% |
| Winchester StaBALL Match | <<locked>> | 90% | 53,156 psi | 86% | 2956 fps | 99.8% |
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% | 43,047 psi | 69% | 2690 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 46,862 psi | 76% | 2795 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 34,447 psi | 56% | 2575 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 40,466 psi | 65% | 2723 fps | 99.7% |
| Accurate 2700 | <<locked>> | 94% | 51,430 psi | 83% | 2835 fps | 95.2% |
| Accurate 4064 | <<locked>> | 80% | 32,663 psi | 53% | 2559 fps | 99.1% |
| Accurate 4350 | <<locked>> | 92% | 36,434 psi | 59% | 2700 fps | 95.2% |
| Accurate LT-30 | <<locked>> | 80% | 49,530 psi | 80% | 2717 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 49,908 psi | 80% | 2740 fps | 100% |
| ADI AR 2206H | <<locked>> | 80% | 39,668 psi | 64% | 2700 fps | 97.5% |
| ADI AR 2208 | <<locked>> | 82% | 35,853 psi | 58% | 2595 fps | 95.6% |
| ADI Benchmark 8208 | <<locked>> | 80% | 41,858 psi | 68% | 2717 fps | 98.9% |
| Alliant AR-Comp | <<locked>> | 80% | 41,249 psi | 67% | 2717 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 45,426 psi | 73% | 2838 fps | 98.8% |
| Alliant Power Pro 2000-MR | 32.3 gr | 80% | 35,955 psi | 58% | 2710 fps | 95.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 32,721 psi | 53% | 2556 fps | 96.3% |
| Alliant Reloder-10x | <<locked>> | 80% | 48,921 psi | 79% | 2795 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 35,404 psi | 57% | 2621 fps | 95.6% |
| Alliant Reloder-16 | <<locked>> | 92% | 37,463 psi | 60% | 2723 fps | 95.5% |
| Alliant Reloder-17 | <<locked>> | 84% | 32,489 psi | 52% | 2625 fps | 95.4% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 51,213 psi | 83% | 2776 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 38,841 psi | 63% | 2697 fps | 96.1% |
| Bofors RP3 | <<locked>> | 80% | 31,734 psi | 51% | 2546 fps | 96.1% |
| Bofors RP7 | <<locked>> | 96% | 49,922 psi | 81% | 2867 fps | 95.2% |
| Hodgdon Benchmark | <<locked>> | 80% | 43,700 psi | 70% | 2713 fps | 99.5% |
| Hodgdon BL-C2 | <<locked>> | 80% | 40,176 psi | 65% | 2730 fps | 99.1% |
| Hodgdon CFE223 | <<locked>> | 80% | 44,382 psi | 72% | 2874 fps | 98.1% |
| Hodgdon H322 | <<locked>> | 80% | 48,254 psi | 78% | 2831 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 49,023 psi | 79% | 2854 fps | 100% |
| Hodgdon H380 | <<locked>> | 84% | 38,072 psi | 61% | 2674 fps | 95.1% |
| Hodgdon H414 | <<locked>> | 96% | 46,238 psi | 75% | 2890 fps | 95% |
| Hodgdon H4895 | <<locked>> | 80% | 39,972 psi | 64% | 2713 fps | 98.1% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 32,010 psi | 52% | 2556 fps | 95.4% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 35,781 psi | 58% | 2667 fps | 97.5% |
| Hodgdon Superformance | <<locked>> | 98% | 50,459 psi | 81% | 2979 fps | 95.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,512 psi | 41% | 1608 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 38,609 psi | 62% | 2667 fps | 97.7% |
| IMR 3031 | <<locked>> | 80% | 39,305 psi | 63% | 2717 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 35,288 psi | 57% | 2575 fps | 95.7% |
| IMR 4166 Enduron | <<locked>> | 88% | 49,197 psi | 79% | 2825 fps | 95.6% |
| IMR 4198 | <<locked>> | 80% | 49,879 psi | 80% | 2766 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 98% | 52,069 psi | 84% | 2867 fps | 95.5% |
| IMR 4831 | <<locked>> | 94% | 38,276 psi | 62% | 2720 fps | 95.9% |
| IMR 4895 | <<locked>> | 80% | 36,289 psi | 59% | 2654 fps | 96.6% |
| IMR 8208 XBR | <<locked>> | 80% | 41,858 psi | 68% | 2717 fps | 98.9% |
| Lovex D073.5 | <<locked>> | 80% | 46,746 psi | 75% | 2802 fps | 99.9% |
| Lovex D073.6 | <<locked>> | 80% | 37,927 psi | 61% | 2671 fps | 99.4% |
| Lovex S060 | <<locked>> | 80% | 40,408 psi | 65% | 2648 fps | 97.7% |
| Lovex S062 | <<locked>> | 80% | 34,882 psi | 56% | 2582 fps | 97.5% |
| Lovex S065 | <<locked>> | 92% | 41,916 psi | 68% | 2726 fps | 95.3% |
| Lovex S070 | <<locked>> | 98% | 48,095 psi | 78% | 2864 fps | 95.7% |
| Norma 201 | <<locked>> | 80% | 38,348 psi | 62% | 2648 fps | 98.4% |
| Norma 202 | <<locked>> | 80% | 38,928 psi | 63% | 2667 fps | 99.8% |
| Norma 203B | <<locked>> | 80% | 34,766 psi | 56% | 2608 fps | 96.1% |
| Norma URP | <<locked>> | 92% | 37,550 psi | 61% | 2713 fps | 95.4% |
| Ramshot Big Game | <<locked>> | 80% | 34,461 psi | 56% | 2621 fps | 95.7% |
| Ramshot Hunter | <<locked>> | 98% | 45,034 psi | 73% | 2874 fps | 95.7% |
| Ramshot TAC | <<locked>> | 80% | 41,916 psi | 68% | 2717 fps | 95.5% |
| Ramshot Wild Boar | <<locked>> | 80% | 41,147 psi | 66% | 2736 fps | 97.8% |
| Ramshot X-Terminator | <<locked>> | 80% | 45,237 psi | 73% | 2766 fps | 98.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,672 psi | 41% | 1647 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 47,181 psi | 76% | 2812 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 44,657 psi | 72% | 2782 fps | 95.2% |
| ReloadSwiss RS 52 | 31.3 gr | 80% | 36,898 psi | 60% | 2720 fps | 96.1% |
| ReloadSwiss RS 60 | 31.8 gr | 80% | 30,182 psi | 49% | 2572 fps | 97% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 39,537 psi | 64% | 2789 fps | 95.9% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 40,364 psi | 65% | 2802 fps | 95% |
| Rottweil R 901 | <<locked>> | 80% | 42,047 psi | 68% | 2703 fps | 99.9% |
| Rottweil R 902 | <<locked>> | 80% | 36,506 psi | 59% | 2598 fps | 97.9% |
| Rottweil R 903 | <<locked>> | 82% | 31,952 psi | 52% | 2543 fps | 95.8% |
| Rottweil R 907 | <<locked>> | 96% | 49,922 psi | 81% | 2867 fps | 95.2% |
| Shooters World Long Rifle | <<locked>> | 92% | 41,916 psi | 68% | 2726 fps | 95.3% |
| Shooters World Match Rifle | <<locked>> | 80% | 37,927 psi | 61% | 2671 fps | 99.4% |
| Shooters World Precision | <<locked>> | 80% | 34,882 psi | 56% | 2582 fps | 97.5% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 50,082 psi | 81% | 2831 fps | 99.7% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 33,721 psi | 54% | 2608 fps | 95.5% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 47,108 psi | 76% | 2746 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 39,566 psi | 64% | 2677 fps | 95.4% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 38,334 psi | 62% | 2667 fps | 97.1% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 40,219 psi | 65% | 2618 fps | 99.8% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 33,011 psi | 53% | 2474 fps | 99.5% |
| SNPE Vectan Tubal 7000 | <<locked>> | 96% | 47,645 psi | 77% | 2782 fps | 95.3% |
| Somchem S321 | <<locked>> | 80% | 45,034 psi | 73% | 2799 fps | 99.5% |
| Somchem S335 | <<locked>> | 80% | 39,653 psi | 64% | 2618 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 39,523 psi | 64% | 2684 fps | 97.4% |
| Somchem S355 | <<locked>> | 80% | 30,908 psi | 50% | 2500 fps | 95.1% |
| Somchem S365 | <<locked>> | 88% | 28,790 psi | 46% | 2526 fps | 95.5% |
| Unknown powder | <<locked>> | 92% | 41,046 psi | 66% | 2779 fps | 95.7% |
| Vihtavuori N130 | <<locked>> | 80% | 45,774 psi | 74% | 2694 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 40,553 psi | 65% | 2621 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 33,286 psi | 54% | 2520 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 36,927 psi | 60% | 2605 fps | 99.7% |
| Vihtavuori N150 | <<locked>> | 80% | 29,559 psi | 48% | 2444 fps | 96.2% |
| Vihtavuori N160 | <<locked>> | 90% | 36,854 psi | 59% | 2661 fps | 95% |
| Vihtavuori N530 | <<locked>> | 80% | 41,669 psi | 67% | 2710 fps | 99% |
| Vihtavuori N540 | <<locked>> | 80% | 35,157 psi | 57% | 2579 fps | 99.2% |
| Vihtavuori N550 | <<locked>> | 92% | 38,566 psi | 62% | 2717 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 32,401 psi | 52% | 2526 fps | 95.6% |
| Winchester 748 | <<locked>> | 80% | 41,002 psi | 66% | 2753 fps | 99.4% |
| Winchester 760 | <<locked>> | 96% | 46,238 psi | 75% | 2890 fps | 95% |
| Winchester StaBALL Match | <<locked>> | 80% | 37,391 psi | 60% | 2664 fps | 97.5% |
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 101 powders for 6 mm GT loaded with the .243 | 95gr | ShellHouse Castings SP Hard Cast. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 3,100 fps; across all powders the maximum-charge window runs from 1,804 fps to 3,100 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 56–90 %, leaving at least 10 % headroom. The 95.0 gr projectile in 0.243" calls for a 1:12.0 twist; slower twists will usually not stabilise this weight. Accurate 4350, Alliant Reloder-16, Hodgdon H414 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. ReloadSwiss RS 60, Alliant Power Pro 2000-MR, ReloadSwiss RS 52 rank at the top here: for 6 mm GT with the .243 | 95gr | ShellHouse Castings SP Hard Cast 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.