Load Specifications
Bullet:.243 | 100gr | Norma SSP
Bullet Manufacturer:Norma
Bullet Weight:100 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:1:10.5
Load data in caliber 6 mm GT with .243 | 100gr | Norma SSP bullet and 100 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 Reloder-17 and Alliant Power Pro 2000-MR.
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>> | 84% | 52,634 psi | 85% | 2746 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 54,636 psi | 88% | 2822 fps | 100% |
| Accurate 2495 | <<locked>> | 90% | 54,491 psi | 88% | 2815 fps | 100% |
| Accurate 2520 | <<locked>> | 84% | 52,881 psi | 85% | 2831 fps | 100% |
| Accurate 2700 | <<locked>> | 90% | 54,143 psi | 87% | 2805 fps | 96.2% |
| Accurate 4064 | <<locked>> | 92% | 54,273 psi | 88% | 2858 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 54,128 psi | 87% | 2936 fps | 99.3% |
| ADI AR 2206H | <<locked>> | 88% | 55,274 psi | 89% | 2890 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 92% | 52,997 psi | 85% | 2841 fps | 99.4% |
| ADI Benchmark 8208 | <<locked>> | 86% | 54,128 psi | 87% | 2841 fps | 100% |
| Alliant AR-Comp | <<locked>> | 86% | 54,882 psi | 89% | 2822 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 90% | 54,650 psi | 88% | 3005 fps | 99.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 92% | 52,562 psi | 85% | 2861 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 82% | 55,622 psi | 90% | 2795 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 90% | 53,084 psi | 86% | 2877 fps | 99.5% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 52,040 psi | 84% | 2936 fps | 99.3% |
| Alliant Reloder-17 | <<locked>> | 96% | 52,982 psi | 85% | 2976 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 37,217 psi | 60% | 2667 fps | 97.7% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 41,336 psi | 67% | 2815 fps | 96.6% |
| Baschieri & Pellagri 107 | <<locked>> | 88% | 55,071 psi | 89% | 2907 fps | 99.4% |
| Bofors RP3 | <<locked>> | 92% | 53,272 psi | 86% | 2877 fps | 100% |
| Bofors RP7 | <<locked>> | 96% | 53,432 psi | 86% | 2838 fps | 96.4% |
| Hodgdon Benchmark | <<locked>> | 84% | 52,794 psi | 85% | 2779 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 86% | 53,359 psi | 86% | 2871 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 84% | 55,274 psi | 89% | 2969 fps | 99.7% |
| Hodgdon H322 | <<locked>> | 82% | 54,824 psi | 88% | 2838 fps | 100% |
| Hodgdon H380 | <<locked>> | 92% | 54,056 psi | 87% | 2884 fps | 98.9% |
| Hodgdon H414 | <<locked>> | 98% | 53,548 psi | 86% | 2930 fps | 97.2% |
| Hodgdon H4350 | <<locked>> | 96% | 54,578 psi | 88% | 2897 fps | 95.9% |
| Hodgdon H4895 | <<locked>> | 88% | 55,825 psi | 90% | 2904 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 48,428 psi | 78% | 2818 fps | 99.6% |
| Hodgdon LEVERevolution | <<locked>> | 90% | 54,839 psi | 88% | 2933 fps | 100% |
| Hodgdon Superformance | <<locked>> | 98% | 54,433 psi | 88% | 2966 fps | 96.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,433 psi | 57% | 1755 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 53,722 psi | 87% | 2854 fps | 99.9% |
| IMR 3031 | <<locked>> | 88% | 55,608 psi | 90% | 2887 fps | 100% |
| IMR 4064 | <<locked>> | 92% | 55,825 psi | 90% | 2874 fps | 99.7% |
| IMR 4166 Enduron | <<locked>> | 88% | 52,518 psi | 85% | 2795 fps | 96.8% |
| IMR 4198 | <<locked>> | 82% | 55,767 psi | 90% | 2753 fps | 100% |
| IMR 4350ᴾ | <<locked>> | 100% | 53,650 psi | 87% | 2864 fps | 96.5% |
| IMR 4451 Enduron | <<locked>> | 96% | 55,216 psi | 89% | 2871 fps | 97.2% |
| IMR 4831ᴾ | <<locked>> | 100% | 50,923 psi | 82% | 2871 fps | 99% |
| IMR 4895 | <<locked>> | 90% | 54,418 psi | 88% | 2910 fps | 99.9% |
| IMR 8208 XBR | <<locked>> | 86% | 54,128 psi | 87% | 2841 fps | 100% |
| Lovex D073.5 | <<locked>> | 82% | 54,549 psi | 88% | 2831 fps | 100% |
| Lovex D073.6 | <<locked>> | 88% | 54,882 psi | 89% | 2871 fps | 100% |
| Lovex S060 | <<locked>> | 88% | 54,955 psi | 89% | 2822 fps | 99.8% |
| Lovex S062 | <<locked>> | 92% | 55,637 psi | 90% | 2871 fps | 100% |
| Lovex S065 | <<locked>> | 98% | 54,418 psi | 88% | 2864 fps | 98.4% |
| Lovex S070ᴾ | <<locked>> | 100% | 55,550 psi | 90% | 2900 fps | 97.6% |
| Norma 201 | <<locked>> | 88% | 54,085 psi | 87% | 2841 fps | 100% |
| Norma 202 | <<locked>> | 88% | 54,665 psi | 88% | 2844 fps | 100% |
| Norma 203B | <<locked>> | 92% | 55,912 psi | 90% | 2923 fps | 99.9% |
| Norma URPᴾ | <<locked>> | 100% | 53,243 psi | 86% | 2927 fps | 99.2% |
| Ramshot Big Game | <<locked>> | 90% | 52,692 psi | 85% | 2890 fps | 99.7% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 52,098 psi | 84% | 2917 fps | 97.7% |
| Ramshot TAC | <<locked>> | 86% | 54,868 psi | 88% | 2861 fps | 98.6% |
| Ramshot Wild Boar | <<locked>> | 86% | 53,925 psi | 87% | 2874 fps | 99.8% |
| Ramshot X-Terminator | <<locked>> | 84% | 55,259 psi | 89% | 2844 fps | 99.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,694 psi | 58% | 1791 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 54,041 psi | 87% | 2828 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 92% | 54,766 psi | 88% | 2871 fps | 97.8% |
| ReloadSwiss RS 52 | <<locked>> | 88% | 53,592 psi | 86% | 2949 fps | 99.6% |
| ReloadSwiss RS 60 | <<locked>> | 94% | 52,750 psi | 85% | 2979 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 53,301 psi | 86% | 2953 fps | 99.1% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 53,737 psi | 87% | 2982 fps | 98.9% |
| Rottweil R 901 | <<locked>> | 86% | 54,839 psi | 88% | 2818 fps | 100% |
| Rottweil R 902 | <<locked>> | 90% | 54,317 psi | 88% | 2835 fps | 100% |
| Rottweil R 903 | <<locked>> | 94% | 53,142 psi | 86% | 2867 fps | 99.9% |
| Rottweil R 907 | <<locked>> | 96% | 53,432 psi | 86% | 2838 fps | 96.4% |
| Shooters World Long Rifle | <<locked>> | 98% | 54,418 psi | 88% | 2864 fps | 98.4% |
| Shooters World Match Rifle | <<locked>> | 88% | 54,882 psi | 89% | 2871 fps | 100% |
| Shooters World Precision | <<locked>> | 92% | 55,637 psi | 90% | 2871 fps | 100% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 55,550 psi | 90% | 2900 fps | 97.6% |
| SNPE Vectan SP 11 | <<locked>> | 94% | 54,795 psi | 88% | 2930 fps | 99.8% |
| SNPE Vectan SP 7 | <<locked>> | 86% | 53,040 psi | 86% | 2838 fps | 98.7% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 53,838 psi | 87% | 2864 fps | 99.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 55,651 psi | 90% | 2779 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 55,593 psi | 90% | 2772 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 98% | 55,085 psi | 89% | 2818 fps | 97.2% |
| Somchem S321 | <<locked>> | 84% | 55,651 psi | 90% | 2881 fps | 100% |
| Somchem S335 | <<locked>> | 88% | 55,071 psi | 89% | 2779 fps | 100% |
| Somchem S341 | <<locked>> | 86% | 52,605 psi | 85% | 2831 fps | 99.7% |
| Somchem S355 | <<locked>> | 94% | 53,505 psi | 86% | 2867 fps | 99.9% |
| Somchem S365ᴾ | <<locked>> | 100% | 47,674 psi | 77% | 2874 fps | 100% |
| Vihtavuori N130 | <<locked>> | 84% | 55,463 psi | 89% | 2743 fps | 100% |
| Vihtavuori N133 | <<locked>> | 88% | 55,782 psi | 90% | 2762 fps | 100% |
| Vihtavuori N135 | <<locked>> | 90% | 53,925 psi | 87% | 2802 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 55,114 psi | 89% | 2822 fps | 100% |
| Vihtavuori N150 | <<locked>> | 96% | 54,868 psi | 88% | 2844 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 55,941 psi | 90% | 2923 fps | 99.4% |
| Vihtavuori N530 | <<locked>> | 86% | 54,882 psi | 89% | 2844 fps | 100% |
| Vihtavuori N540 | <<locked>> | 90% | 53,316 psi | 86% | 2818 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 54,897 psi | 89% | 2927 fps | 99.2% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 39,972 psi | 64% | 2736 fps | 97.5% |
| Winchester 6.5 StaBALL | <<locked>> | 98% | 52,765 psi | 85% | 2848 fps | 99.9% |
| Winchester 748 | <<locked>> | 86% | 54,346 psi | 88% | 2887 fps | 100% |
| Winchester 760 | <<locked>> | 98% | 53,548 psi | 86% | 2930 fps | 97.2% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 33,185 psi | 54% | 2641 fps | 96.8% |
| Winchester StaBALL Match | <<locked>> | 88% | 53,548 psi | 86% | 2871 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% | 46,644 psi | 75% | 2654 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 51,068 psi | 82% | 2769 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 39,465 psi | 64% | 2579 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 45,992 psi | 74% | 2723 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 50,633 psi | 82% | 2749 fps | 95.4% |
| Accurate 4064 | <<locked>> | 80% | 37,289 psi | 60% | 2569 fps | 99.9% |
| Accurate 4350 | <<locked>> | 88% | 35,549 psi | 57% | 2592 fps | 95.3% |
| ADI AR 2206H | <<locked>> | 80% | 42,917 psi | 69% | 2677 fps | 98.5% |
| ADI AR 2208 | <<locked>> | 80% | 36,463 psi | 59% | 2523 fps | 96.2% |
| ADI Benchmark 8208 | <<locked>> | 80% | 44,962 psi | 73% | 2690 fps | 99.6% |
| Alliant AR-Comp | <<locked>> | 80% | 44,802 psi | 72% | 2680 fps | 100% |
| Alliant Power Pro 2000-MR | 31.8 gr | 80% | 39,044 psi | 63% | 2703 fps | 96.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 35,955 psi | 58% | 2546 fps | 97.8% |
| Alliant Reloder-10x | <<locked>> | 80% | 52,330 psi | 84% | 2749 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 38,696 psi | 62% | 2612 fps | 97.1% |
| Alliant Reloder-16 | <<locked>> | 88% | 35,853 psi | 58% | 2602 fps | 95.4% |
| Alliant Reloder-17 | 31.3 gr | 80% | 31,154 psi | 50% | 2507 fps | 95.3% |
| Alliant Reloder-23 | <<locked>> | 94% | 30,980 psi | 50% | 2500 fps | 95% |
| Alliant Reloder-26 | <<locked>> | 98% | 38,522 psi | 62% | 2749 fps | 95.5% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 42,148 psi | 68% | 2680 fps | 97.4% |
| Bofors RP3 | <<locked>> | 80% | 35,418 psi | 57% | 2549 fps | 97.7% |
| Bofors RP7 | <<locked>> | 92% | 47,456 psi | 77% | 2736 fps | 95% |
| Hodgdon Benchmark | <<locked>> | 80% | 46,992 psi | 76% | 2684 fps | 99.9% |
| Hodgdon BL-C2 | <<locked>> | 80% | 43,816 psi | 71% | 2713 fps | 99.7% |
| Hodgdon CFE223 | <<locked>> | 80% | 48,066 psi | 78% | 2851 fps | 99% |
| Hodgdon H322 | <<locked>> | 80% | 51,561 psi | 83% | 2792 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 36,637 psi | 59% | 2556 fps | 95% |
| Hodgdon H414 | <<locked>> | 94% | 46,601 psi | 75% | 2812 fps | 95.6% |
| Hodgdon H4350 | <<locked>> | 94% | 51,024 psi | 82% | 2838 fps | 95.1% |
| Hodgdon H4895 | <<locked>> | 80% | 43,323 psi | 70% | 2690 fps | 99% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 30,937 psi | 50% | 2448 fps | 95.4% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 39,088 psi | 63% | 2654 fps | 98.6% |
| Hodgdon Superformance | <<locked>> | 96% | 50,763 psi | 82% | 2904 fps | 96% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,092 psi | 42% | 1562 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 41,568 psi | 67% | 2641 fps | 98.6% |
| IMR 3031 | <<locked>> | 80% | 42,772 psi | 69% | 2690 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 38,218 psi | 62% | 2559 fps | 97% |
| IMR 4166 Enduron | <<locked>> | 84% | 46,325 psi | 75% | 2687 fps | 95.3% |
| IMR 4198 | <<locked>> | 80% | 52,475 psi | 85% | 2710 fps | 100% |
| IMR 4350 | <<locked>> | 96% | 47,297 psi | 76% | 2756 fps | 95% |
| IMR 4451 Enduron | <<locked>> | 90% | 45,992 psi | 74% | 2710 fps | 95.1% |
| IMR 4831 | <<locked>> | 88% | 34,490 psi | 56% | 2549 fps | 95% |
| IMR 4895 | <<locked>> | 80% | 39,639 psi | 64% | 2641 fps | 97.9% |
| IMR 8208 XBR | <<locked>> | 80% | 44,962 psi | 73% | 2690 fps | 99.6% |
| Lovex D073.5 | <<locked>> | 80% | 50,952 psi | 82% | 2779 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 41,843 psi | 67% | 2657 fps | 99.9% |
| Lovex S060 | <<locked>> | 80% | 43,178 psi | 70% | 2618 fps | 98.6% |
| Lovex S062 | <<locked>> | 80% | 38,247 psi | 62% | 2569 fps | 98.6% |
| Lovex S065 | <<locked>> | 88% | 40,292 psi | 65% | 2608 fps | 95.2% |
| Lovex S070 | <<locked>> | 94% | 46,122 psi | 74% | 2743 fps | 95.6% |
| Norma 201 | <<locked>> | 80% | 42,235 psi | 68% | 2638 fps | 99.3% |
| Norma 202 | <<locked>> | 80% | 42,235 psi | 68% | 2641 fps | 100% |
| Norma 203B | <<locked>> | 80% | 38,087 psi | 61% | 2598 fps | 97.5% |
| Norma URP | <<locked>> | 88% | 35,824 psi | 58% | 2592 fps | 95.2% |
| Ramshot Big Game | <<locked>> | 80% | 37,710 psi | 61% | 2615 fps | 97.2% |
| Ramshot Hunter | <<locked>> | 94% | 42,902 psi | 69% | 2746 fps | 95.5% |
| Ramshot TAC | <<locked>> | 80% | 44,773 psi | 72% | 2690 fps | 96.7% |
| Ramshot Wild Boar | <<locked>> | 80% | 44,469 psi | 72% | 2717 fps | 98.8% |
| Ramshot X-Terminator | <<locked>> | 80% | 48,544 psi | 78% | 2736 fps | 99.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,411 psi | 43% | 1598 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 50,473 psi | 81% | 2776 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 44,846 psi | 72% | 2700 fps | 95.7% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 40,509 psi | 65% | 2713 fps | 97.6% |
| ReloadSwiss RS 60 | 31.3 gr | 80% | 33,185 psi | 54% | 2575 fps | 98.6% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 37,739 psi | 61% | 2661 fps | 95.7% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 40,828 psi | 66% | 2733 fps | 95.8% |
| Rottweil R 901 | <<locked>> | 80% | 45,934 psi | 74% | 2677 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 39,943 psi | 64% | 2582 fps | 98.9% |
| Rottweil R 903 | <<locked>> | 80% | 33,489 psi | 54% | 2493 fps | 96.8% |
| Rottweil R 907 | <<locked>> | 92% | 47,456 psi | 77% | 2736 fps | 95% |
| Shooters World Long Rifle | <<locked>> | 88% | 40,292 psi | 65% | 2608 fps | 95.2% |
| Shooters World Match Rifle | <<locked>> | 80% | 41,843 psi | 67% | 2657 fps | 99.9% |
| Shooters World Precision | <<locked>> | 80% | 38,247 psi | 62% | 2569 fps | 98.6% |
| Shooters World SW4350 | <<locked>> | 94% | 46,122 psi | 74% | 2743 fps | 95.6% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 34,476 psi | 56% | 2543 fps | 96.2% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 43,207 psi | 70% | 2664 fps | 96.9% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 41,524 psi | 67% | 2648 fps | 98.2% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 43,598 psi | 70% | 2592 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 36,129 psi | 58% | 2457 fps | 99.9% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 45,411 psi | 73% | 2661 fps | 95.1% |
| Somchem S321 | <<locked>> | 80% | 48,689 psi | 79% | 2772 fps | 99.9% |
| Somchem S335 | <<locked>> | 80% | 43,265 psi | 70% | 2595 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 42,931 psi | 69% | 2664 fps | 98.5% |
| Somchem S355 | <<locked>> | 80% | 34,490 psi | 56% | 2503 fps | 96.9% |
| Somchem S365 | <<locked>> | 84% | 28,210 psi | 45% | 2428 fps | 95.7% |
| Vihtavuori N130 | <<locked>> | 80% | 49,211 psi | 79% | 2657 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 43,830 psi | 71% | 2589 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 39,421 psi | 64% | 2572 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 40,103 psi | 65% | 2582 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 32,692 psi | 53% | 2441 fps | 97.7% |
| Vihtavuori N160 | <<locked>> | 88% | 37,681 psi | 61% | 2598 fps | 95.8% |
| Vihtavuori N530 | <<locked>> | 80% | 44,947 psi | 72% | 2684 fps | 99.6% |
| Vihtavuori N540 | <<locked>> | 80% | 38,725 psi | 62% | 2569 fps | 99.8% |
| Vihtavuori N550 | <<locked>> | 88% | 36,985 psi | 60% | 2598 fps | 95.4% |
| Vihtavuori N555 | <<locked>> | 94% | 32,880 psi | 53% | 2572 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 31,082 psi | 50% | 2411 fps | 95.5% |
| Winchester 748 | <<locked>> | 80% | 44,527 psi | 72% | 2730 fps | 99.9% |
| Winchester 760 | <<locked>> | 94% | 47,007 psi | 76% | 2818 fps | 95.7% |
| Winchester StaBALL HD | <<locked>> | 98% | 31,067 psi | 50% | 2572 fps | 95.4% |
| Winchester StaBALL Match | <<locked>> | 80% | 40,741 psi | 66% | 2648 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 100 powders for 6 mm GT loaded with the .243 | 100gr | Norma SSP. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 3,005 fps; across all powders the maximum-charge window runs from 1,755 fps to 3,005 fps. Accurate 4350 gives the best case fill at 100 %, and 100 of the 100 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (427 MPa), the top charges use 54–90 %, leaving at least 10 % headroom. The 100.0 gr projectile in 0.243" calls for a 1:10.5 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. ReloadSwiss RS 60, Alliant Reloder-17, Alliant Power Pro 2000-MR rank at the top here: for 6 mm GT with the .243 | 100gr | Norma SSP 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.