Load Specifications
Load data in caliber 6 mm GT with .243 | 77gr | Hasler ARIETE bullet and 87 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 Hodgdon LEVERevolution.
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>> | 92% | 54,360 psi | 88% | 3130 fps | 100% |
| Accurate 2200 | <<locked>> | 84% | 54,897 psi | 89% | 3219 fps | 97.2% |
| Accurate 2230 | <<locked>> | 84% | 56,086 psi | 90% | 3235 fps | 97.8% |
| Accurate 2460 | <<locked>> | 88% | 52,953 psi | 85% | 3146 fps | 99.8% |
| Accurate 2495 | <<locked>> | 98% | 54,665 psi | 88% | 3186 fps | 100% |
| Accurate 2520 | <<locked>> | 92% | 54,375 psi | 88% | 3205 fps | 99.8% |
| Accurate 4064ᴾ | <<locked>> | 100% | 54,056 psi | 87% | 3219 fps | 100% |
| Accurate LT-30 | <<locked>> | 86% | 54,998 psi | 89% | 3081 fps | 100% |
| Accurate LT-32 | <<locked>> | 86% | 55,405 psi | 89% | 3104 fps | 99.8% |
| ADI AR 2206H | <<locked>> | 94% | 53,519 psi | 86% | 3202 fps | 97.9% |
| ADI AR 2207 | <<locked>> | 82% | 52,997 psi | 85% | 3068 fps | 100% |
| ADI AR 2208ᴾ | <<locked>> | 100% | 54,404 psi | 88% | 3189 fps | 97.4% |
| ADI AR 2219 | <<locked>> | 86% | 55,216 psi | 89% | 3209 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 92% | 53,113 psi | 86% | 3163 fps | 98.8% |
| Alliant AR-Comp | <<locked>> | 94% | 55,405 psi | 89% | 3215 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 88% | 53,998 psi | 87% | 3274 fps | 98.5% |
| Alliant Power Pro 2000-MR | <<locked>> | 96% | 53,040 psi | 86% | 3294 fps | 96.8% |
| Alliant Reloder- TS 15.5ᴾ | <<locked>> | 100% | 53,214 psi | 86% | 3212 fps | 98.6% |
| Alliant Reloder-10x | <<locked>> | 88% | 54,404 psi | 88% | 3150 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 98% | 54,462 psi | 88% | 3235 fps | 97.6% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 47,543 psi | 77% | 3186 fps | 97.1% |
| Alliant Reloder-7 | <<locked>> | 82% | 54,186 psi | 87% | 3087 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 86% | 54,418 psi | 88% | 3074 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 94% | 53,258 psi | 86% | 3205 fps | 96.8% |
| Bofors RP3ᴾ | <<locked>> | 100% | 53,606 psi | 86% | 3225 fps | 98.8% |
| Hodgdon Benchmark | <<locked>> | 92% | 55,651 psi | 90% | 3159 fps | 99.4% |
| Hodgdon BL-C2 | <<locked>> | 94% | 54,984 psi | 89% | 3245 fps | 99.4% |
| Hodgdon CFE223 | <<locked>> | 90% | 53,127 psi | 86% | 3281 fps | 97.4% |
| Hodgdon H322 | <<locked>> | 88% | 53,737 psi | 87% | 3186 fps | 100% |
| Hodgdon H335 | <<locked>> | 88% | 54,911 psi | 89% | 3205 fps | 100% |
| Hodgdon H380ᴾ | <<locked>> | 100% | 55,724 psi | 90% | 3235 fps | 96.5% |
| Hodgdon H4198 | <<locked>> | 82% | 53,548 psi | 86% | 3084 fps | 100% |
| Hodgdon H4895 | <<locked>> | 94% | 53,911 psi | 87% | 3215 fps | 98.4% |
| Hodgdon LEVERevolution | <<locked>> | 98% | 55,680 psi | 90% | 3294 fps | 99.1% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,040 psi | 55% | 1962 fps | 100% |
| Hodgdon VARGET | <<locked>> | 96% | 55,550 psi | 90% | 3219 fps | 98.6% |
| IMR 3031 | <<locked>> | 94% | 52,707 psi | 85% | 3222 fps | 100% |
| IMR 4064 | <<locked>> | 98% | 53,896 psi | 87% | 3173 fps | 97.5% |
| IMR 4198 | <<locked>> | 88% | 54,926 psi | 89% | 3114 fps | 100% |
| IMR 4895 | <<locked>> | 98% | 55,840 psi | 90% | 3274 fps | 98.4% |
| IMR 8208 XBR | <<locked>> | 92% | 53,113 psi | 86% | 3163 fps | 98.8% |
| Lovex D073.4 | <<locked>> | 82% | 52,982 psi | 85% | 3159 fps | 99.6% |
| Lovex D073.5 | <<locked>> | 88% | 53,345 psi | 86% | 3156 fps | 99.4% |
| Lovex D073.6 | <<locked>> | 96% | 55,825 psi | 90% | 3238 fps | 99.9% |
| Lovex S060 | <<locked>> | 94% | 54,375 psi | 88% | 3133 fps | 98% |
| Lovex S062 | <<locked>> | 98% | 53,127 psi | 86% | 3176 fps | 98.9% |
| Norma 200 | <<locked>> | 84% | 54,447 psi | 88% | 3123 fps | 100% |
| Norma 201 | <<locked>> | 96% | 55,724 psi | 90% | 3209 fps | 99.2% |
| Norma 202 | <<locked>> | 96% | 56,043 psi | 90% | 3222 fps | 100% |
| Norma 203B | <<locked>> | 98% | 53,548 psi | 86% | 3222 fps | 98% |
| Ramshot Big Game | <<locked>> | 98% | 54,012 psi | 87% | 3245 fps | 97.8% |
| Ramshot Wild Boar | <<locked>> | 94% | 56,057 psi | 90% | 3245 fps | 98.3% |
| Ramshot X-Terminator | <<locked>> | 90% | 54,998 psi | 89% | 3166 fps | 97.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,084 psi | 55% | 2005 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 88% | 52,663 psi | 85% | 3153 fps | 99.5% |
| ReloadSwiss RS 52 | <<locked>> | 96% | 53,925 psi | 87% | 3304 fps | 97.5% |
| ReloadSwiss RS 60ᴾ | <<locked>> | 100% | 50,792 psi | 82% | 3274 fps | 99.6% |
| Rottweil R 901 | <<locked>> | 92% | 53,287 psi | 86% | 3146 fps | 99.8% |
| Rottweil R 902 | <<locked>> | 98% | 55,912 psi | 90% | 3199 fps | 99.2% |
| Rottweil R 903ᴾ | <<locked>> | 100% | 49,603 psi | 80% | 3146 fps | 97.9% |
| Shooters World AR Plus | <<locked>> | 82% | 52,982 psi | 85% | 3159 fps | 99.6% |
| Shooters World Match Rifle | <<locked>> | 96% | 55,825 psi | 90% | 3238 fps | 99.9% |
| Shooters World Precision | <<locked>> | 98% | 53,127 psi | 86% | 3176 fps | 98.9% |
| Shooters World Tactical Rifle | <<locked>> | 86% | 52,939 psi | 85% | 3114 fps | 98.5% |
| SNPE Vectan BA6 1/2 | <<locked>> | 84% | 55,738 psi | 90% | 2838 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 86% | 55,579 psi | 90% | 3212 fps | 100% |
| SNPE Vectan SP 11ᴾ | <<locked>> | 100% | 51,996 psi | 84% | 3219 fps | 97.6% |
| SNPE Vectan SP 3 | <<locked>> | 88% | 55,477 psi | 89% | 3173 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 94% | 55,376 psi | 89% | 3192 fps | 96.2% |
| SNPE Vectan SP 9 | <<locked>> | 96% | 55,637 psi | 90% | 3225 fps | 98.2% |
| SNPE Vectan Tubal 3000 | <<locked>> | 94% | 54,549 psi | 88% | 3107 fps | 99.9% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 53,983 psi | 87% | 3097 fps | 100% |
| Somchem S321 | <<locked>> | 90% | 54,230 psi | 87% | 3199 fps | 99.2% |
| Somchem S335 | <<locked>> | 94% | 53,780 psi | 87% | 3107 fps | 100% |
| Somchem S341 | <<locked>> | 94% | 54,549 psi | 88% | 3189 fps | 97.9% |
| Somchem S355ᴾ | <<locked>> | 100% | 50,589 psi | 82% | 3153 fps | 97.8% |
| Vihtavuori N120 | <<locked>> | 82% | 52,895 psi | 85% | 3012 fps | 100% |
| Vihtavuori N130 | <<locked>> | 90% | 54,723 psi | 88% | 3094 fps | 100% |
| Vihtavuori N133 | <<locked>> | 94% | 54,215 psi | 87% | 3097 fps | 100% |
| Vihtavuori N135 | <<locked>> | 98% | 54,302 psi | 88% | 3176 fps | 100% |
| Vihtavuori N140 | <<locked>> | 96% | 53,142 psi | 86% | 3143 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 48,936 psi | 79% | 3084 fps | 98.7% |
| Vihtavuori N530 | <<locked>> | 92% | 53,432 psi | 86% | 3159 fps | 98.9% |
| Vihtavuori N540 | <<locked>> | 98% | 54,578 psi | 88% | 3182 fps | 99.9% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 45,092 psi | 73% | 3002 fps | 96.5% |
| Winchester 748 | <<locked>> | 94% | 56,043 psi | 90% | 3268 fps | 99.7% |
| Winchester StaBALL Match | <<locked>> | 96% | 54,911 psi | 89% | 3232 fps | 98.6% |
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% | 37,173 psi | 60% | 2815 fps | 99.6% |
| Accurate 2200 | <<locked>> | 80% | 48,356 psi | 78% | 3100 fps | 95.9% |
| Accurate 2230 | <<locked>> | 80% | 48,457 psi | 78% | 3100 fps | 96.3% |
| Accurate 2460 | <<locked>> | 80% | 40,567 psi | 65% | 2913 fps | 98.4% |
| Accurate 2495 | <<locked>> | 80% | 29,849 psi | 48% | 2687 fps | 98.4% |
| Accurate 2520 | <<locked>> | 80% | 35,766 psi | 58% | 2838 fps | 96.8% |
| Accurate 4064 | <<locked>> | 80% | 28,253 psi | 46% | 2654 fps | 95.1% |
| Accurate LT-30 | <<locked>> | 80% | 45,774 psi | 74% | 2923 fps | 99.8% |
| Accurate LT-32 | <<locked>> | 80% | 46,064 psi | 74% | 2940 fps | 99% |
| ADI AR 2206H | <<locked>> | 86% | 41,553 psi | 67% | 2963 fps | 95.1% |
| ADI AR 2207 | <<locked>> | 80% | 49,748 psi | 80% | 3018 fps | 100% |
| ADI AR 2208 | <<locked>> | 94% | 45,324 psi | 73% | 3018 fps | 95.3% |
| ADI AR 2219 | <<locked>> | 80% | 45,179 psi | 73% | 3035 fps | 99.7% |
| ADI Benchmark 8208 | <<locked>> | 82% | 38,493 psi | 62% | 2867 fps | 95.6% |
| Alliant AR-Comp | <<locked>> | 80% | 34,592 psi | 56% | 2841 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 41,336 psi | 67% | 3022 fps | 95.8% |
| Alliant Power Pro 2000-MR | 35.7 gr | 92% | 46,470 psi | 75% | 3163 fps | 95% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 38,551 psi | 62% | 2920 fps | 95.3% |
| Alliant Reloder-10x | <<locked>> | 80% | 42,612 psi | 69% | 2946 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 92% | 44,889 psi | 72% | 3054 fps | 95.4% |
| Alliant Reloder-17 | <<locked>> | 96% | 41,307 psi | 67% | 3045 fps | 95.1% |
| Alliant Reloder-7 | <<locked>> | 80% | 50,966 psi | 82% | 3035 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 44,614 psi | 72% | 2910 fps | 99.9% |
| Baschieri & Pellagri 107 | <<locked>> | 90% | 46,369 psi | 75% | 3077 fps | 95.1% |
| Bofors RP3 | <<locked>> | 90% | 38,058 psi | 61% | 2917 fps | 95.3% |
| Hodgdon Benchmark | <<locked>> | 80% | 38,566 psi | 62% | 2825 fps | 96.3% |
| Hodgdon BL-C2 | <<locked>> | 82% | 36,477 psi | 59% | 2874 fps | 95.7% |
| Hodgdon CFE223 | <<locked>> | 86% | 46,122 psi | 74% | 3143 fps | 95.7% |
| Hodgdon H322 | <<locked>> | 80% | 41,220 psi | 66% | 2953 fps | 99.3% |
| Hodgdon H335 | <<locked>> | 80% | 41,785 psi | 67% | 2966 fps | 98.8% |
| Hodgdon H380 | <<locked>> | 98% | 51,808 psi | 84% | 3166 fps | 95.6% |
| Hodgdon H4198 | <<locked>> | 80% | 50,328 psi | 81% | 3028 fps | 99.9% |
| Hodgdon H4895 | <<locked>> | 84% | 39,305 psi | 63% | 2920 fps | 95.1% |
| Hodgdon LEVERevolution | 33.4 gr | 88% | 39,900 psi | 64% | 2982 fps | 95.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,063 psi | 40% | 1752 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 40,466 psi | 65% | 2930 fps | 95.3% |
| IMR 3031 | <<locked>> | 80% | 32,837 psi | 53% | 2812 fps | 98.3% |
| IMR 4064 | <<locked>> | 92% | 44,701 psi | 72% | 2999 fps | 95.4% |
| IMR 4198 | <<locked>> | 80% | 43,381 psi | 70% | 2920 fps | 100% |
| IMR 4895 | <<locked>> | 90% | 42,801 psi | 69% | 3028 fps | 95.6% |
| IMR 8208 XBR | <<locked>> | 82% | 38,493 psi | 62% | 2867 fps | 95.6% |
| Lovex D073.4 | <<locked>> | 80% | 49,298 psi | 80% | 3097 fps | 99.3% |
| Lovex D073.5 | <<locked>> | 80% | 40,089 psi | 65% | 2900 fps | 97.2% |
| Lovex D073.6 | <<locked>> | 80% | 32,155 psi | 52% | 2756 fps | 95.4% |
| Lovex S060 | <<locked>> | 86% | 42,424 psi | 68% | 2907 fps | 95.4% |
| Lovex S062 | <<locked>> | 86% | 36,332 psi | 59% | 2828 fps | 95% |
| Norma 200 | <<locked>> | 80% | 48,124 psi | 78% | 3022 fps | 100% |
| Norma 201 | <<locked>> | 84% | 38,159 psi | 62% | 2861 fps | 95.6% |
| Norma 202 | <<locked>> | 80% | 33,388 psi | 54% | 2762 fps | 96.7% |
| Norma 203B | <<locked>> | 90% | 41,046 psi | 66% | 2976 fps | 95% |
| Ramshot Big Game | <<locked>> | 92% | 44,208 psi | 71% | 3058 fps | 95.6% |
| Ramshot Wild Boar | <<locked>> | 86% | 42,815 psi | 69% | 2995 fps | 95.4% |
| Ramshot X-Terminator | <<locked>> | 82% | 42,018 psi | 68% | 2917 fps | 95% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,179 psi | 41% | 1795 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 40,799 psi | 66% | 2923 fps | 97.7% |
| ReloadSwiss RS 52 | 33.8 gr | 90% | 43,671 psi | 70% | 3100 fps | 95% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 36,463 psi | 59% | 2936 fps | 96% |
| Rottweil R 901 | <<locked>> | 80% | 37,289 psi | 60% | 2825 fps | 97.6% |
| Rottweil R 902 | <<locked>> | 86% | 38,653 psi | 62% | 2864 fps | 95.7% |
| Rottweil R 903 | <<locked>> | 94% | 40,451 psi | 65% | 2966 fps | 95.7% |
| Shooters World AR Plus | <<locked>> | 80% | 49,298 psi | 80% | 3097 fps | 99.3% |
| Shooters World Match Rifle | <<locked>> | 80% | 32,155 psi | 52% | 2756 fps | 95.4% |
| Shooters World Precision | <<locked>> | 86% | 36,332 psi | 59% | 2828 fps | 95% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 43,149 psi | 70% | 2933 fps | 96.6% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 50,198 psi | 81% | 2759 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 45,556 psi | 73% | 3035 fps | 99.3% |
| SNPE Vectan SP 11 | <<locked>> | 94% | 42,583 psi | 69% | 3028 fps | 95.2% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 42,931 psi | 69% | 2953 fps | 99.8% |
| SNPE Vectan SP 7 | <<locked>> | 92% | 51,517 psi | 83% | 3127 fps | 95.4% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 42,931 psi | 69% | 2986 fps | 95.5% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 35,346 psi | 57% | 2730 fps | 97.2% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 28,703 psi | 46% | 2569 fps | 96% |
| Somchem S321 | <<locked>> | 80% | 38,580 psi | 62% | 2890 fps | 96% |
| Somchem S335 | <<locked>> | 80% | 34,940 psi | 56% | 2736 fps | 98% |
| Somchem S341 | <<locked>> | 88% | 44,527 psi | 72% | 3005 fps | 95.8% |
| Somchem S355 | <<locked>> | 94% | 41,959 psi | 68% | 2982 fps | 95.8% |
| Vihtavuori N120 | <<locked>> | 80% | 49,647 psi | 80% | 2963 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 40,147 psi | 65% | 2838 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 35,244 psi | 57% | 2743 fps | 99.2% |
| Vihtavuori N135 | <<locked>> | 80% | 30,327 psi | 49% | 2694 fps | 98.4% |
| Vihtavuori N140 | <<locked>> | 80% | 31,618 psi | 51% | 2697 fps | 96.5% |
| Vihtavuori N150 | <<locked>> | 90% | 35,186 psi | 57% | 2799 fps | 95.2% |
| Vihtavuori N530 | <<locked>> | 82% | 38,609 psi | 62% | 2867 fps | 95.8% |
| Vihtavuori N540 | <<locked>> | 80% | 30,298 psi | 49% | 2671 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 98% | 42,090 psi | 68% | 2940 fps | 95.5% |
| Winchester 748 | <<locked>> | 80% | 34,809 psi | 56% | 2838 fps | 95.4% |
| Winchester StaBALL Match | <<locked>> | 86% | 39,175 psi | 63% | 2923 fps | 95.1% |
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 87 powders for 6 mm GT loaded with the .243 | 77gr | Hasler ARIETE. ReloadSwiss RS 52 delivers the highest muzzle velocity at 3,304 fps; across all powders the maximum-charge window runs from 1,962 fps to 3,304 fps. Accurate 4064 gives the best case fill at 100 %, and 87 of the 87 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 77.0 gr projectile in 0.243" calls for a 1:9.0 twist; slower twists will usually not stabilise this weight. Accurate 4064, ADI AR 2208, Alliant Reloder- TS 15.5 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, Hodgdon LEVERevolution rank at the top here: for 6 mm GT with the .243 | 77gr | Hasler ARIETE 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.