Load Specifications
Load data in caliber 6 mm GT with .243 | 87gr | Hornady SP bullet and 90 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 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% | 54,041 psi | 87% | 2963 fps | 100% |
| Accurate 2460 | <<locked>> | 84% | 52,939 psi | 85% | 2986 fps | 100% |
| Accurate 2495 | <<locked>> | 94% | 55,550 psi | 90% | 3031 fps | 100% |
| Accurate 2520 | <<locked>> | 88% | 54,491 psi | 88% | 3048 fps | 100% |
| Accurate 4064 | <<locked>> | 96% | 55,013 psi | 89% | 3068 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 47,297 psi | 76% | 3005 fps | 97% |
| Accurate LT-30 | <<locked>> | 82% | 53,853 psi | 87% | 2910 fps | 100% |
| Accurate LT-32 | <<locked>> | 82% | 54,244 psi | 87% | 2933 fps | 100% |
| ADI AR 2206H | <<locked>> | 90% | 53,229 psi | 86% | 3048 fps | 99% |
| ADI AR 2208 | <<locked>> | 96% | 54,201 psi | 87% | 3038 fps | 98.6% |
| ADI AR 2219 | <<locked>> | 82% | 54,360 psi | 88% | 3028 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 90% | 55,869 psi | 90% | 3058 fps | 99.8% |
| Alliant AR-Comp | <<locked>> | 90% | 55,753 psi | 90% | 3041 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 84% | 54,099 psi | 87% | 3117 fps | 99.5% |
| Alliant Power Pro 2000-MR | <<locked>> | 92% | 52,591 psi | 85% | 3153 fps | 98.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 96% | 53,635 psi | 87% | 3064 fps | 99.6% |
| Alliant Reloder-10x | <<locked>> | 84% | 54,041 psi | 87% | 2976 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 94% | 54,317 psi | 88% | 3084 fps | 98.8% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 46,833 psi | 76% | 3012 fps | 97% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 54,215 psi | 87% | 3179 fps | 99.6% |
| Baschieri & Pellagri 106 | <<locked>> | 82% | 53,127 psi | 86% | 2900 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 90% | 53,084 psi | 86% | 3058 fps | 98.2% |
| Bofors RP3 | <<locked>> | 96% | 54,186 psi | 87% | 3084 fps | 99.7% |
| Hodgdon Benchmark | <<locked>> | 88% | 54,839 psi | 88% | 2995 fps | 99.9% |
| Hodgdon BL-C2 | <<locked>> | 90% | 54,882 psi | 89% | 3084 fps | 99.9% |
| Hodgdon CFE223 | <<locked>> | 86% | 52,837 psi | 85% | 3123 fps | 98.7% |
| Hodgdon H322 | <<locked>> | 84% | 52,982 psi | 85% | 3009 fps | 100% |
| Hodgdon H335 | <<locked>> | 84% | 54,143 psi | 87% | 3035 fps | 100% |
| Hodgdon H380 | <<locked>> | 96% | 55,782 psi | 90% | 3094 fps | 98% |
| Hodgdon H4895 | <<locked>> | 90% | 53,679 psi | 87% | 3061 fps | 99.4% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 43,062 psi | 69% | 2890 fps | 97.7% |
| Hodgdon LEVERevolution | <<locked>> | 92% | 52,431 psi | 85% | 3087 fps | 99.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,563 psi | 56% | 1867 fps | 100% |
| Hodgdon VARGET | <<locked>> | 92% | 55,405 psi | 89% | 3068 fps | 99.5% |
| IMR 3031 | <<locked>> | 90% | 53,026 psi | 86% | 3054 fps | 100% |
| IMR 4064 | <<locked>> | 94% | 53,824 psi | 87% | 3028 fps | 98.8% |
| IMR 4198 | <<locked>> | 84% | 54,186 psi | 87% | 2933 fps | 100% |
| IMR 4831ᴾ | <<locked>> | 100% | 44,918 psi | 72% | 2940 fps | 96.5% |
| IMR 4895 | <<locked>> | 94% | 55,695 psi | 90% | 3120 fps | 99.4% |
| IMR 8208 XBR | <<locked>> | 90% | 55,869 psi | 90% | 3058 fps | 99.8% |
| Lovex D073.5 | <<locked>> | 84% | 52,736 psi | 85% | 2992 fps | 99.9% |
| Lovex D073.6 | <<locked>> | 92% | 55,970 psi | 90% | 3081 fps | 100% |
| Lovex S060 | <<locked>> | 90% | 53,476 psi | 86% | 2979 fps | 99.1% |
| Lovex S062 | <<locked>> | 94% | 53,388 psi | 86% | 3028 fps | 99.7% |
| Lovex S065ᴾ | <<locked>> | 100% | 52,547 psi | 85% | 3005 fps | 96.6% |
| Norma 201 | <<locked>> | 92% | 55,332 psi | 89% | 3048 fps | 99.8% |
| Norma 202 | <<locked>> | 92% | 55,767 psi | 90% | 3054 fps | 100% |
| Norma 203B | <<locked>> | 94% | 53,432 psi | 86% | 3071 fps | 99.1% |
| Norma URPᴾ | <<locked>> | 100% | 47,152 psi | 76% | 3002 fps | 96.9% |
| Ramshot Big Game | <<locked>> | 94% | 53,954 psi | 87% | 3097 fps | 99% |
| Ramshot TAC | <<locked>> | 88% | 53,330 psi | 86% | 3015 fps | 97% |
| Ramshot Wild Boar | <<locked>> | 90% | 55,724 psi | 90% | 3091 fps | 99.3% |
| Ramshot X-Terminator | <<locked>> | 86% | 53,882 psi | 87% | 3005 fps | 99% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,070 psi | 57% | 1916 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 86% | 55,898 psi | 90% | 3051 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 96% | 56,101 psi | 90% | 3064 fps | 96.5% |
| ReloadSwiss RS 52 | <<locked>> | 92% | 54,288 psi | 88% | 3156 fps | 98.8% |
| ReloadSwiss RS 60 | <<locked>> | 98% | 54,070 psi | 87% | 3189 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 47,094 psi | 76% | 3025 fps | 96.6% |
| Rottweil R 901 | <<locked>> | 88% | 53,055 psi | 86% | 2986 fps | 100% |
| Rottweil R 902 | <<locked>> | 94% | 55,999 psi | 90% | 3048 fps | 99.8% |
| Rottweil R 903 | <<locked>> | 98% | 53,534 psi | 86% | 3064 fps | 99.5% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 52,547 psi | 85% | 3005 fps | 96.6% |
| Shooters World Match Rifle | <<locked>> | 92% | 55,970 psi | 90% | 3081 fps | 100% |
| Shooters World Precision | <<locked>> | 94% | 53,388 psi | 86% | 3028 fps | 99.7% |
| Shooters World Tactical Rifle | <<locked>> | 84% | 55,492 psi | 90% | 3012 fps | 99.7% |
| SNPE Vectan SP 10 | <<locked>> | 82% | 54,766 psi | 88% | 3038 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 98% | 55,564 psi | 90% | 3130 fps | 99.3% |
| SNPE Vectan SP 3 | <<locked>> | 84% | 55,100 psi | 89% | 2999 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 90% | 54,853 psi | 88% | 3045 fps | 97.7% |
| SNPE Vectan SP 9 | <<locked>> | 92% | 55,187 psi | 89% | 3071 fps | 99.2% |
| SNPE Vectan Tubal 3000 | <<locked>> | 90% | 54,157 psi | 87% | 2949 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 96% | 53,722 psi | 87% | 2940 fps | 100% |
| Somchem S321 | <<locked>> | 86% | 53,911 psi | 87% | 3041 fps | 99.8% |
| Somchem S335 | <<locked>> | 90% | 53,258 psi | 86% | 2943 fps | 100% |
| Somchem S341 | <<locked>> | 90% | 54,215 psi | 87% | 3038 fps | 99.1% |
| Somchem S355 | <<locked>> | 98% | 54,172 psi | 87% | 3064 fps | 99.4% |
| Somchem S365ᴾ | <<locked>> | 100% | 42,018 psi | 68% | 2943 fps | 98.8% |
| Vihtavuori N130 | <<locked>> | 86% | 54,056 psi | 87% | 2920 fps | 100% |
| Vihtavuori N133 | <<locked>> | 90% | 54,099 psi | 87% | 2936 fps | 100% |
| Vihtavuori N135 | <<locked>> | 94% | 54,839 psi | 88% | 3015 fps | 100% |
| Vihtavuori N140 | <<locked>> | 92% | 52,939 psi | 85% | 2982 fps | 100% |
| Vihtavuori N150 | <<locked>> | 98% | 52,344 psi | 84% | 2992 fps | 99.8% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 49,690 psi | 80% | 3002 fps | 97.3% |
| Vihtavuori N530 | <<locked>> | 88% | 52,939 psi | 85% | 3002 fps | 99.7% |
| Vihtavuori N540 | <<locked>> | 94% | 54,650 psi | 88% | 3028 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 48,733 psi | 79% | 3005 fps | 96.9% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 50,763 psi | 82% | 2986 fps | 99.2% |
| Winchester 748 | <<locked>> | 90% | 55,985 psi | 90% | 3110 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 92% | 55,114 psi | 89% | 3084 fps | 99.6% |
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% | 42,380 psi | 68% | 2769 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 46,137 psi | 74% | 2874 fps | 99.9% |
| Accurate 2495 | <<locked>> | 80% | 34,708 psi | 56% | 2664 fps | 99.9% |
| Accurate 2520 | <<locked>> | 80% | 41,162 psi | 66% | 2815 fps | 99.2% |
| Accurate 4064 | <<locked>> | 80% | 32,837 psi | 53% | 2638 fps | 98.4% |
| Accurate 4350 | <<locked>> | 96% | 41,046 psi | 66% | 2881 fps | 95.3% |
| Accurate LT-30 | <<locked>> | 80% | 50,763 psi | 82% | 2861 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 51,097 psi | 82% | 2884 fps | 100% |
| ADI AR 2206H | <<locked>> | 80% | 38,943 psi | 63% | 2766 fps | 96.1% |
| ADI AR 2208 | <<locked>> | 86% | 40,001 psi | 65% | 2769 fps | 95.6% |
| ADI AR 2219 | <<locked>> | 80% | 51,111 psi | 82% | 2982 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 80% | 40,915 psi | 66% | 2785 fps | 97.9% |
| Alliant AR-Comp | <<locked>> | 80% | 39,958 psi | 64% | 2795 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 47,355 psi | 76% | 2999 fps | 98.6% |
| Alliant Power Pro 2000-MR | 33.5 gr | 84% | 40,030 psi | 65% | 2887 fps | 95% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 34,229 psi | 55% | 2674 fps | 95.6% |
| Alliant Reloder-10x | <<locked>> | 80% | 47,877 psi | 77% | 2877 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 39,624 psi | 64% | 2802 fps | 95.7% |
| Alliant Reloder-16 | <<locked>> | 96% | 41,278 psi | 67% | 2890 fps | 95.3% |
| Alliant Reloder-17 | <<locked>> | 88% | 36,318 psi | 59% | 2799 fps | 95.5% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 49,879 psi | 80% | 2851 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 40,524 psi | 65% | 2815 fps | 95.3% |
| Bofors RP3 | <<locked>> | 82% | 33,823 psi | 55% | 2674 fps | 95.6% |
| Hodgdon Benchmark | <<locked>> | 80% | 42,815 psi | 69% | 2782 fps | 98.7% |
| Hodgdon BL-C2 | <<locked>> | 80% | 38,957 psi | 63% | 2792 fps | 98% |
| Hodgdon CFE223 | <<locked>> | 80% | 42,917 psi | 69% | 2933 fps | 96.6% |
| Hodgdon H322 | <<locked>> | 80% | 46,818 psi | 76% | 2910 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 47,297 psi | 76% | 2923 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 42,627 psi | 69% | 2851 fps | 95.1% |
| Hodgdon H4895 | <<locked>> | 80% | 39,189 psi | 63% | 2779 fps | 96.8% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 35,607 psi | 57% | 2720 fps | 95.3% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 35,012 psi | 56% | 2726 fps | 95.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,715 psi | 41% | 1670 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 37,739 psi | 61% | 2730 fps | 96.3% |
| IMR 3031 | <<locked>> | 80% | 38,159 psi | 62% | 2789 fps | 99.9% |
| IMR 4064 | <<locked>> | 84% | 39,479 psi | 64% | 2753 fps | 95.7% |
| IMR 4198 | <<locked>> | 80% | 48,356 psi | 78% | 2844 fps | 100% |
| IMR 4831 | <<locked>> | 98% | 42,221 psi | 68% | 2887 fps | 95.8% |
| IMR 4895 | <<locked>> | 80% | 35,607 psi | 57% | 2720 fps | 95% |
| IMR 8208 XBR | <<locked>> | 80% | 40,915 psi | 66% | 2785 fps | 97.9% |
| Lovex D073.5 | <<locked>> | 80% | 46,006 psi | 74% | 2877 fps | 99.4% |
| Lovex D073.6 | <<locked>> | 80% | 37,275 psi | 60% | 2743 fps | 98.5% |
| Lovex S060 | <<locked>> | 80% | 39,624 psi | 64% | 2710 fps | 96.3% |
| Lovex S062 | <<locked>> | 80% | 34,505 psi | 56% | 2648 fps | 96.2% |
| Lovex S065 | <<locked>> | 96% | 46,354 psi | 75% | 2894 fps | 95.1% |
| Norma 201 | <<locked>> | 80% | 38,000 psi | 61% | 2720 fps | 97.3% |
| Norma 202 | <<locked>> | 80% | 38,203 psi | 62% | 2740 fps | 99.2% |
| Norma 203B | <<locked>> | 82% | 36,361 psi | 59% | 2726 fps | 95.3% |
| Norma URP | <<locked>> | 96% | 41,394 psi | 67% | 2881 fps | 95.2% |
| Ramshot Big Game | <<locked>> | 84% | 38,363 psi | 62% | 2792 fps | 95.7% |
| Ramshot TAC | <<locked>> | 84% | 46,441 psi | 75% | 2887 fps | 95.4% |
| Ramshot Wild Boar | <<locked>> | 80% | 39,813 psi | 64% | 2792 fps | 96.3% |
| Ramshot X-Terminator | <<locked>> | 80% | 44,295 psi | 71% | 2831 fps | 97.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,933 psi | 42% | 1713 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 46,006 psi | 74% | 2884 fps | 99.6% |
| ReloadSwiss RS 50 | <<locked>> | 92% | 49,472 psi | 80% | 2953 fps | 95.1% |
| ReloadSwiss RS 52 | 31.7 gr | 82% | 38,276 psi | 62% | 2838 fps | 95.2% |
| ReloadSwiss RS 60 | 31.5 gr | 80% | 29,878 psi | 48% | 2625 fps | 95.1% |
| ReloadSwiss RS 62 | <<locked>> | 98% | 43,932 psi | 71% | 2963 fps | 95.8% |
| Rottweil R 901 | <<locked>> | 80% | 41,901 psi | 68% | 2782 fps | 99.5% |
| Rottweil R 902 | <<locked>> | 80% | 36,230 psi | 58% | 2671 fps | 96.7% |
| Rottweil R 903 | <<locked>> | 84% | 33,721 psi | 54% | 2664 fps | 95.2% |
| Shooters World Long Rifle | <<locked>> | 96% | 46,354 psi | 75% | 2894 fps | 95.1% |
| Shooters World Match Rifle | <<locked>> | 80% | 37,275 psi | 60% | 2743 fps | 98.5% |
| Shooters World Precision | <<locked>> | 80% | 34,505 psi | 56% | 2648 fps | 96.2% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 48,414 psi | 78% | 2894 fps | 99% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 51,213 psi | 83% | 2982 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 37,594 psi | 61% | 2782 fps | 95.5% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 48,689 psi | 79% | 2900 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 44,657 psi | 72% | 2861 fps | 95.5% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 37,550 psi | 61% | 2730 fps | 95.6% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 39,885 psi | 64% | 2697 fps | 99.4% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 32,764 psi | 53% | 2549 fps | 98.8% |
| Somchem S321 | <<locked>> | 80% | 44,077 psi | 71% | 2867 fps | 98.8% |
| Somchem S335 | <<locked>> | 80% | 39,117 psi | 63% | 2694 fps | 99.7% |
| Somchem S341 | <<locked>> | 80% | 38,609 psi | 62% | 2743 fps | 95.9% |
| Somchem S355 | <<locked>> | 84% | 34,925 psi | 56% | 2680 fps | 95.3% |
| Somchem S365 | <<locked>> | 92% | 32,474 psi | 52% | 2703 fps | 95.7% |
| Vihtavuori N130 | <<locked>> | 80% | 45,165 psi | 73% | 2782 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 39,972 psi | 64% | 2700 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 35,302 psi | 57% | 2671 fps | 99.9% |
| Vihtavuori N140 | <<locked>> | 80% | 36,187 psi | 58% | 2674 fps | 99.1% |
| Vihtavuori N150 | <<locked>> | 82% | 31,125 psi | 50% | 2559 fps | 95.5% |
| Vihtavuori N160 | <<locked>> | 96% | 43,613 psi | 70% | 2887 fps | 95.8% |
| Vihtavuori N530 | <<locked>> | 80% | 40,756 psi | 66% | 2776 fps | 98% |
| Vihtavuori N540 | <<locked>> | 80% | 34,635 psi | 56% | 2648 fps | 98.3% |
| Vihtavuori N550 | <<locked>> | 96% | 42,830 psi | 69% | 2890 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 36,492 psi | 59% | 2697 fps | 95.7% |
| Winchester 748 | <<locked>> | 80% | 39,885 psi | 64% | 2818 fps | 98.5% |
| Winchester StaBALL Match | <<locked>> | 80% | 36,564 psi | 59% | 2726 fps | 96% |
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 90 powders for 6 mm GT loaded with the .243 | 87gr | Hornady SP. ReloadSwiss RS 60 delivers the highest muzzle velocity at 3,189 fps; across all powders the maximum-charge window runs from 1,867 fps to 3,189 fps. Accurate 4350 gives the best case fill at 100 %, and 90 of the 90 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 87.0 gr projectile in 0.243" calls for a 1:11.5 twist; slower twists will usually not stabilise this weight. Accurate 4350, Alliant Reloder-16, Alliant Reloder-17 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, ReloadSwiss RS 52 rank at the top here: for 6 mm GT with the .243 | 87gr | Hornady SP 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.