Load Specifications
Load data in caliber 6 mm GT with .243 | 85gr | Frontier PH HPBT bullet and 84 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 52 and ReloadSwiss RS 60.
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.
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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>> | 90% | 55,172 psi | 89% | 3002 fps | 100% |
| Accurate 2200 | <<locked>> | 82% | 54,984 psi | 89% | 3091 fps | 98.3% |
| Accurate 2460 | <<locked>> | 86% | 53,621 psi | 86% | 3022 fps | 100% |
| Accurate 2495 | <<locked>> | 96% | 55,695 psi | 90% | 3058 fps | 100% |
| Accurate 2520 | <<locked>> | 90% | 55,230 psi | 89% | 3084 fps | 100% |
| Accurate 4064 | <<locked>> | 98% | 55,216 psi | 89% | 3094 fps | 100% |
| Accurate LT-30 | <<locked>> | 84% | 55,129 psi | 89% | 2946 fps | 100% |
| Accurate LT-32 | <<locked>> | 84% | 55,506 psi | 90% | 2972 fps | 100% |
| ADI AR 2206H | <<locked>> | 92% | 53,983 psi | 87% | 3077 fps | 98.8% |
| ADI AR 2208 | <<locked>> | 98% | 55,216 psi | 89% | 3074 fps | 98.4% |
| ADI AR 2219 | <<locked>> | 84% | 55,506 psi | 90% | 3071 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 90% | 53,505 psi | 86% | 3038 fps | 99.5% |
| Alliant AR-Comp | <<locked>> | 90% | 52,692 psi | 85% | 3028 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 86% | 54,549 psi | 88% | 3146 fps | 99.3% |
| Alliant Power Pro 2000-MR | <<locked>> | 94% | 53,650 psi | 87% | 3186 fps | 98.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 98% | 53,983 psi | 87% | 3091 fps | 99.4% |
| Alliant Reloder-10x | <<locked>> | 86% | 55,071 psi | 89% | 3015 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 96% | 55,187 psi | 89% | 3117 fps | 98.6% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 51,300 psi | 83% | 3143 fps | 98.9% |
| Baschieri & Pellagri 106 | <<locked>> | 84% | 54,056 psi | 87% | 2936 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 92% | 53,998 psi | 87% | 3091 fps | 98% |
| Bofors RP3 | <<locked>> | 98% | 54,592 psi | 88% | 3110 fps | 99.5% |
| Hodgdon Benchmark | <<locked>> | 90% | 55,782 psi | 90% | 3028 fps | 99.8% |
| Hodgdon BL-C2 | <<locked>> | 92% | 55,811 psi | 90% | 3123 fps | 99.9% |
| Hodgdon CFE223 | <<locked>> | 88% | 54,012 psi | 87% | 3163 fps | 98.5% |
| Hodgdon H322 | <<locked>> | 86% | 54,070 psi | 87% | 3048 fps | 100% |
| Hodgdon H335 | <<locked>> | 86% | 55,390 psi | 89% | 3077 fps | 100% |
| Hodgdon H380 | <<locked>> | 96% | 52,518 psi | 85% | 3058 fps | 97% |
| Hodgdon H4895 | <<locked>> | 92% | 54,447 psi | 88% | 3094 fps | 99.2% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 40,437 psi | 65% | 2848 fps | 96.4% |
| Hodgdon LEVERevolution | <<locked>> | 94% | 53,214 psi | 86% | 3123 fps | 99.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,229 psi | 55% | 1870 fps | 100% |
| Hodgdon VARGET | <<locked>> | 94% | 55,898 psi | 90% | 3094 fps | 99.3% |
| IMR 3031 | <<locked>> | 92% | 53,534 psi | 86% | 3091 fps | 100% |
| IMR 4064 | <<locked>> | 96% | 54,708 psi | 88% | 3061 fps | 98.5% |
| IMR 4198 | <<locked>> | 86% | 55,230 psi | 89% | 2972 fps | 100% |
| IMR 4895 | <<locked>> | 94% | 52,707 psi | 85% | 3091 fps | 98.7% |
| IMR 8208 XBR | <<locked>> | 90% | 53,505 psi | 86% | 3038 fps | 99.5% |
| Lovex D073.5 | <<locked>> | 86% | 53,505 psi | 86% | 3025 fps | 99.8% |
| Lovex D073.6 | <<locked>> | 92% | 52,823 psi | 85% | 3054 fps | 100% |
| Lovex S060 | <<locked>> | 92% | 54,404 psi | 88% | 3012 fps | 98.8% |
| Lovex S062 | <<locked>> | 96% | 53,708 psi | 87% | 3054 fps | 99.6% |
| Norma 200 | <<locked>> | 82% | 54,636 psi | 88% | 2982 fps | 100% |
| Norma 201 | <<locked>> | 92% | 52,837 psi | 85% | 3028 fps | 99.4% |
| Norma 202 | <<locked>> | 92% | 53,243 psi | 86% | 3041 fps | 100% |
| Norma 203B | <<locked>> | 96% | 54,273 psi | 88% | 3107 fps | 98.9% |
| Ramshot Big Game | <<locked>> | 96% | 54,447 psi | 88% | 3123 fps | 98.8% |
| Ramshot TAC | <<locked>> | 90% | 54,404 psi | 88% | 3048 fps | 96.7% |
| Ramshot Wild Boar | <<locked>> | 90% | 52,910 psi | 85% | 3064 fps | 98.6% |
| Ramshot X-Terminator | <<locked>> | 88% | 54,853 psi | 88% | 3038 fps | 98.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,722 psi | 56% | 1919 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 86% | 53,447 psi | 86% | 3031 fps | 99.9% |
| ReloadSwiss RS 52 | <<locked>> | 94% | 54,998 psi | 89% | 3186 fps | 98.6% |
| ReloadSwiss RS 60ᴾ | <<locked>> | 100% | 54,824 psi | 88% | 3219 fps | 100% |
| Rottweil R 901 | <<locked>> | 90% | 54,085 psi | 87% | 3025 fps | 100% |
| Rottweil R 902 | <<locked>> | 94% | 53,069 psi | 86% | 3022 fps | 99.5% |
| Rottweil R 903ᴾ | <<locked>> | 100% | 53,954 psi | 87% | 3091 fps | 99.3% |
| Shooters World Match Rifle | <<locked>> | 92% | 52,823 psi | 85% | 3054 fps | 100% |
| Shooters World Precision | <<locked>> | 96% | 53,708 psi | 87% | 3054 fps | 99.6% |
| Shooters World Tactical Rifle | <<locked>> | 84% | 53,113 psi | 86% | 2992 fps | 99.2% |
| SNPE Vectan BA6 1/2 | <<locked>> | 82% | 55,274 psi | 89% | 2694 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 84% | 55,956 psi | 90% | 3081 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 98% | 52,823 psi | 85% | 3107 fps | 98.6% |
| SNPE Vectan SP 3 | <<locked>> | 86% | 55,651 psi | 90% | 3031 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 92% | 55,985 psi | 90% | 3077 fps | 97.5% |
| SNPE Vectan SP 9 | <<locked>> | 92% | 52,460 psi | 85% | 3045 fps | 98.6% |
| SNPE Vectan Tubal 3000 | <<locked>> | 92% | 55,056 psi | 89% | 2982 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 98% | 54,737 psi | 88% | 2976 fps | 100% |
| Somchem S321 | <<locked>> | 88% | 54,766 psi | 88% | 3077 fps | 99.7% |
| Somchem S335 | <<locked>> | 92% | 54,070 psi | 87% | 2976 fps | 100% |
| Somchem S341 | <<locked>> | 92% | 55,230 psi | 89% | 3071 fps | 98.9% |
| Somchem S355ᴾ | <<locked>> | 100% | 54,650 psi | 88% | 3091 fps | 99.2% |
| Somchem S365ᴾ | <<locked>> | 100% | 39,378 psi | 64% | 2900 fps | 97.7% |
| Vihtavuori N130 | <<locked>> | 88% | 54,752 psi | 88% | 2953 fps | 100% |
| Vihtavuori N133 | <<locked>> | 92% | 54,882 psi | 89% | 2969 fps | 100% |
| Vihtavuori N135 | <<locked>> | 96% | 55,521 psi | 90% | 3051 fps | 100% |
| Vihtavuori N140 | <<locked>> | 94% | 53,708 psi | 87% | 3015 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 52,866 psi | 85% | 3025 fps | 99.7% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 46,731 psi | 75% | 2963 fps | 96% |
| Vihtavuori N530 | <<locked>> | 90% | 54,288 psi | 88% | 3045 fps | 99.6% |
| Vihtavuori N540 | <<locked>> | 96% | 55,158 psi | 89% | 3058 fps | 100% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 48,399 psi | 78% | 2956 fps | 98.4% |
| Winchester 748 | <<locked>> | 90% | 52,910 psi | 85% | 3084 fps | 99.8% |
| Winchester StaBALL Match | <<locked>> | 94% | 55,695 psi | 90% | 3114 fps | 99.4% |
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% | 40,306 psi | 65% | 2753 fps | 100% |
| Accurate 2200 | <<locked>> | 80% | 51,590 psi | 83% | 3031 fps | 97.7% |
| Accurate 2460 | <<locked>> | 80% | 43,685 psi | 70% | 2851 fps | 99.5% |
| Accurate 2495 | <<locked>> | 80% | 32,663 psi | 53% | 2638 fps | 99.6% |
| Accurate 2520 | <<locked>> | 80% | 38,827 psi | 63% | 2789 fps | 98.6% |
| Accurate 4064 | <<locked>> | 80% | 30,908 psi | 50% | 2612 fps | 97.4% |
| Accurate LT-30 | <<locked>> | 80% | 48,776 psi | 79% | 2848 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 49,153 psi | 79% | 2867 fps | 99.8% |
| ADI AR 2206H | <<locked>> | 82% | 39,479 psi | 64% | 2795 fps | 95.7% |
| ADI AR 2208 | <<locked>> | 88% | 40,364 psi | 65% | 2795 fps | 95.1% |
| ADI AR 2219 | <<locked>> | 80% | 48,486 psi | 78% | 2959 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 80% | 39,102 psi | 63% | 2762 fps | 97% |
| Alliant AR-Comp | <<locked>> | 80% | 37,623 psi | 61% | 2776 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 45,020 psi | 73% | 2972 fps | 97.8% |
| Alliant Power Pro 2000-MR | 34.1 gr | 88% | 43,830 psi | 71% | 2989 fps | 95.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 34,592 psi | 56% | 2703 fps | 95.2% |
| Alliant Reloder-10x | <<locked>> | 80% | 45,571 psi | 74% | 2864 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 39,885 psi | 64% | 2825 fps | 95.3% |
| Alliant Reloder-17 | <<locked>> | 92% | 39,436 psi | 64% | 2894 fps | 96% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 47,761 psi | 77% | 2838 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 86% | 43,888 psi | 71% | 2907 fps | 95.8% |
| Bofors RP3 | <<locked>> | 84% | 33,837 psi | 55% | 2697 fps | 95.1% |
| Hodgdon Benchmark | <<locked>> | 80% | 41,060 psi | 66% | 2762 fps | 98% |
| Hodgdon BL-C2 | <<locked>> | 80% | 37,115 psi | 60% | 2769 fps | 97.1% |
| Hodgdon CFE223 | <<locked>> | 80% | 40,669 psi | 66% | 2900 fps | 95.4% |
| Hodgdon H322 | <<locked>> | 80% | 44,251 psi | 71% | 2884 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 45,295 psi | 73% | 2907 fps | 99.8% |
| Hodgdon H380 | <<locked>> | 92% | 45,890 psi | 74% | 2936 fps | 95.5% |
| Hodgdon H4895 | <<locked>> | 80% | 37,333 psi | 60% | 2753 fps | 95.7% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 38,000 psi | 61% | 2792 fps | 95.6% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 35,491 psi | 57% | 2759 fps | 95.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,512 psi | 41% | 1677 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 36,013 psi | 58% | 2703 fps | 95.1% |
| IMR 3031 | <<locked>> | 80% | 36,013 psi | 58% | 2766 fps | 99.6% |
| IMR 4064 | <<locked>> | 86% | 39,798 psi | 64% | 2776 fps | 95.3% |
| IMR 4198 | <<locked>> | 80% | 46,499 psi | 75% | 2838 fps | 100% |
| IMR 4895 | <<locked>> | 84% | 38,319 psi | 62% | 2805 fps | 95.5% |
| IMR 8208 XBR | <<locked>> | 80% | 39,102 psi | 63% | 2762 fps | 97% |
| Lovex D073.5 | <<locked>> | 80% | 43,642 psi | 70% | 2851 fps | 98.8% |
| Lovex D073.6 | <<locked>> | 80% | 35,041 psi | 57% | 2710 fps | 97.6% |
| Lovex S060 | <<locked>> | 80% | 37,942 psi | 61% | 2687 fps | 95.3% |
| Lovex S062 | <<locked>> | 80% | 32,750 psi | 53% | 2621 fps | 95% |
| Norma 200 | <<locked>> | 80% | 51,358 psi | 83% | 2933 fps | 100% |
| Norma 201 | <<locked>> | 80% | 36,187 psi | 58% | 2694 fps | 96.2% |
| Norma 202 | <<locked>> | 80% | 36,260 psi | 58% | 2717 fps | 98.5% |
| Norma 203B | <<locked>> | 86% | 39,204 psi | 63% | 2812 fps | 95.7% |
| Ramshot Big Game | <<locked>> | 86% | 39,117 psi | 63% | 2828 fps | 95.3% |
| Ramshot TAC | <<locked>> | 86% | 47,529 psi | 77% | 2927 fps | 95.1% |
| Ramshot Wild Boar | <<locked>> | 80% | 38,058 psi | 61% | 2769 fps | 95.2% |
| Ramshot X-Terminator | <<locked>> | 80% | 42,279 psi | 68% | 2808 fps | 96.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,730 psi | 41% | 1716 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 43,642 psi | 70% | 2858 fps | 99.1% |
| ReloadSwiss RS 52 | 32.3 gr | 86% | 41,756 psi | 67% | 2936 fps | 95.8% |
| ReloadSwiss RS 60 | 32 gr | 84% | 32,198 psi | 52% | 2710 fps | 95.6% |
| Rottweil R 901 | <<locked>> | 80% | 39,929 psi | 64% | 2762 fps | 99% |
| Rottweil R 902 | <<locked>> | 80% | 34,418 psi | 56% | 2641 fps | 95.6% |
| Rottweil R 903 | <<locked>> | 88% | 36,332 psi | 59% | 2749 fps | 95.6% |
| Shooters World Match Rifle | <<locked>> | 80% | 35,041 psi | 57% | 2710 fps | 97.6% |
| Shooters World Precision | <<locked>> | 80% | 32,750 psi | 53% | 2621 fps | 95% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 46,514 psi | 75% | 2877 fps | 98.3% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 52,895 psi | 85% | 2661 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 49,211 psi | 79% | 2972 fps | 99.9% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 37,913 psi | 61% | 2805 fps | 95% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 46,354 psi | 75% | 2884 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 86% | 45,223 psi | 73% | 2887 fps | 95.1% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 38,130 psi | 61% | 2762 fps | 95.2% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 38,014 psi | 61% | 2674 fps | 98.8% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 31,111 psi | 50% | 2523 fps | 98% |
| Somchem S321 | <<locked>> | 80% | 41,872 psi | 68% | 2844 fps | 98% |
| Somchem S335 | <<locked>> | 80% | 37,333 psi | 60% | 2674 fps | 99.2% |
| Somchem S341 | <<locked>> | 82% | 39,262 psi | 63% | 2776 fps | 95.5% |
| Somchem S355 | <<locked>> | 88% | 37,666 psi | 61% | 2766 fps | 95.8% |
| Somchem S365 | <<locked>> | 94% | 32,750 psi | 53% | 2726 fps | 95.1% |
| Vihtavuori N130 | <<locked>> | 80% | 43,163 psi | 70% | 2766 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 38,058 psi | 61% | 2684 fps | 99.9% |
| Vihtavuori N135 | <<locked>> | 80% | 33,301 psi | 54% | 2648 fps | 99.7% |
| Vihtavuori N140 | <<locked>> | 80% | 34,084 psi | 55% | 2641 fps | 98.3% |
| Vihtavuori N150 | <<locked>> | 84% | 31,459 psi | 51% | 2589 fps | 95.1% |
| Vihtavuori N160 | <<locked>> | 98% | 43,932 psi | 71% | 2910 fps | 95.3% |
| Vihtavuori N530 | <<locked>> | 80% | 38,914 psi | 63% | 2756 fps | 97.1% |
| Vihtavuori N540 | <<locked>> | 80% | 32,996 psi | 53% | 2628 fps | 97.5% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 37,159 psi | 60% | 2723 fps | 95.3% |
| Winchester 748 | <<locked>> | 80% | 37,579 psi | 61% | 2789 fps | 97.6% |
| Winchester StaBALL Match | <<locked>> | 82% | 37,086 psi | 60% | 2756 fps | 95.7% |
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 84 powders for 6 mm GT loaded with the .243 | 85gr | Frontier PH HPBT. ReloadSwiss RS 60 delivers the highest muzzle velocity at 3,219 fps; across all powders the maximum-charge window runs from 1,870 fps to 3,219 fps. Alliant Reloder-17 gives the best case fill at 100 %, and 84 of the 84 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (427 MPa), the top charges use 55–90 %, leaving at least 10 % headroom. The 85.0 gr projectile in 0.243" calls for a 1:9.0 twist; slower twists will usually not stabilise this weight. Alliant Reloder-17, Hodgdon Hybrid 100V, Hodgdon TrailBoss 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 52, ReloadSwiss RS 60 rank at the top here: for 6 mm GT with the .243 | 85gr | Frontier PH HPBT 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.