Load Specifications
Load data in caliber 6 mm GT with .243 | 65gr | Impala LWHV LS bullet and 74 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are IMR 3031, Hodgdon H4895 and Winchester 748.
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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Max Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 1680 | <<locked>> | 82% | 55,579 psi | 90% | 3304 fps | 100% |
| Accurate 2015 | <<locked>> | 94% | 56,043 psi | 90% | 3389 fps | 100% |
| Accurate 2460 | <<locked>> | 90% | 55,056 psi | 89% | 3399 fps | 99.3% |
| Accurate 2495 | <<locked>> | 98% | 53,229 psi | 86% | 3392 fps | 100% |
| Accurate 2520 | <<locked>> | 94% | 55,782 psi | 90% | 3451 fps | 99.2% |
| Accurate 4064ᴾ | <<locked>> | 100% | 52,344 psi | 84% | 3409 fps | 99.5% |
| Accurate LT-30 | <<locked>> | 86% | 53,011 psi | 86% | 3274 fps | 99.8% |
| Accurate LT-32 | <<locked>> | 86% | 53,417 psi | 86% | 3291 fps | 98.9% |
| ADI AR 2206H | <<locked>> | 96% | 54,534 psi | 88% | 3432 fps | 96.4% |
| ADI AR 2207 | <<locked>> | 84% | 54,143 psi | 87% | 3330 fps | 100% |
| ADI AR 2219 | <<locked>> | 86% | 52,895 psi | 85% | 3402 fps | 99.7% |
| ADI Benchmark 8208 | <<locked>> | 94% | 54,215 psi | 87% | 3396 fps | 97.6% |
| Alliant AR-Comp | <<locked>> | 96% | 55,840 psi | 90% | 3471 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 90% | 54,984 psi | 89% | 3520 fps | 97.2% |
| Alliant Reloder- TS 15.5ᴾ | <<locked>> | 100% | 50,662 psi | 82% | 3379 fps | 96.7% |
| Alliant Reloder-10x | <<locked>> | 90% | 55,753 psi | 90% | 3409 fps | 100% |
| Alliant Reloder-15ᴾ | <<locked>> | 100% | 55,201 psi | 89% | 3461 fps | 95.9% |
| Alliant Reloder-7 | <<locked>> | 84% | 55,941 psi | 90% | 3350 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 88% | 55,390 psi | 89% | 3314 fps | 100% |
| Bofors RP3ᴾ | <<locked>> | 100% | 51,082 psi | 82% | 3392 fps | 96.8% |
| Hodgdon Benchmark | <<locked>> | 92% | 53,461 psi | 86% | 3337 fps | 98% |
| Hodgdon BL-C2 | <<locked>> | 96% | 55,985 psi | 90% | 3481 fps | 98.5% |
| Hodgdon H322 | <<locked>> | 90% | 54,723 psi | 88% | 3435 fps | 99.8% |
| Hodgdon H335 | <<locked>> | 88% | 52,649 psi | 85% | 3392 fps | 99.2% |
| Hodgdon H4198 | <<locked>> | 84% | 54,926 psi | 89% | 3333 fps | 99.7% |
| Hodgdon H4895 | <<locked>> | 96% | 54,911 psi | 89% | 3451 fps | 97.1% |
| Hodgdon LEVERevolution | <<locked>> | 98% | 53,200 psi | 86% | 3465 fps | 97.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 33,968 psi | 55% | 2126 fps | 100% |
| Hodgdon VARGET | <<locked>> | 96% | 53,142 psi | 86% | 3392 fps | 96.6% |
| IMR 3031 | <<locked>> | 96% | 52,910 psi | 85% | 3461 fps | 100% |
| IMR 4064ᴾ | <<locked>> | 100% | 54,752 psi | 88% | 3399 fps | 95.9% |
| IMR 4198 | <<locked>> | 90% | 55,521 psi | 90% | 3366 fps | 100% |
| IMR 4895 | <<locked>> | 98% | 53,214 psi | 86% | 3445 fps | 96.3% |
| IMR 8208 XBR | <<locked>> | 94% | 54,215 psi | 87% | 3396 fps | 97.6% |
| Lovex D073.4 | <<locked>> | 84% | 54,592 psi | 88% | 3409 fps | 98.8% |
| Lovex D073.5 | <<locked>> | 90% | 54,781 psi | 88% | 3392 fps | 98.5% |
| Lovex D073.6 | <<locked>> | 96% | 53,330 psi | 86% | 3419 fps | 98.9% |
| Lovex S060 | <<locked>> | 96% | 55,651 psi | 90% | 3366 fps | 96.6% |
| Lovex S062ᴾ | <<locked>> | 100% | 54,215 psi | 87% | 3409 fps | 97.7% |
| Norma 200 | <<locked>> | 84% | 53,301 psi | 86% | 3340 fps | 100% |
| Norma 201 | <<locked>> | 96% | 53,635 psi | 87% | 3383 fps | 97.6% |
| Norma 202 | <<locked>> | 96% | 53,301 psi | 86% | 3402 fps | 99.3% |
| Norma 203Bᴾ | <<locked>> | 100% | 54,201 psi | 87% | 3448 fps | 96.4% |
| Ramshot Big Gameᴾ | <<locked>> | 100% | 54,737 psi | 88% | 3461 fps | 96.1% |
| Ramshot Wild Boar | <<locked>> | 94% | 53,809 psi | 87% | 3419 fps | 96.2% |
| Ramshot X-Terminator | <<locked>> | 92% | 56,014 psi | 90% | 3392 fps | 96.5% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,040 psi | 55% | 2172 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 90% | 53,911 psi | 87% | 3396 fps | 98.7% |
| ReloadSwiss RS 60ᴾ | <<locked>> | 100% | 48,370 psi | 78% | 3415 fps | 97.7% |
| Rottweil R 901 | <<locked>> | 94% | 55,245 psi | 89% | 3399 fps | 99.3% |
| Rottweil R 902 | <<locked>> | 98% | 54,259 psi | 88% | 3383 fps | 97.6% |
| Shooters World AR Plus | <<locked>> | 84% | 54,592 psi | 88% | 3409 fps | 98.8% |
| Shooters World Match Rifle | <<locked>> | 96% | 53,330 psi | 86% | 3419 fps | 98.9% |
| Shooters World Precisionᴾ | <<locked>> | 100% | 54,215 psi | 87% | 3409 fps | 97.7% |
| Shooters World Tactical Rifle | <<locked>> | 88% | 54,650 psi | 88% | 3356 fps | 97.3% |
| SNPE Vectan BA6 1/2 | <<locked>> | 84% | 54,273 psi | 88% | 3051 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 86% | 53,490 psi | 86% | 3402 fps | 99.3% |
| SNPE Vectan SP 3 | <<locked>> | 88% | 53,026 psi | 86% | 3369 fps | 99.9% |
| SNPE Vectan SP 9 | <<locked>> | 96% | 53,055 psi | 86% | 3392 fps | 96% |
| SNPE Vectan Tubal 3000 | <<locked>> | 94% | 52,982 psi | 85% | 3297 fps | 99.2% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 51,735 psi | 83% | 3278 fps | 99.6% |
| Somchem S321 | <<locked>> | 92% | 55,579 psi | 90% | 3442 fps | 98.1% |
| Somchem S335 | <<locked>> | 96% | 54,781 psi | 88% | 3343 fps | 99.8% |
| Somchem S341 | <<locked>> | 96% | 55,463 psi | 89% | 3412 fps | 96.4% |
| Vihtavuori N120 | <<locked>> | 84% | 53,998 psi | 87% | 3271 fps | 100% |
| Vihtavuori N130 | <<locked>> | 92% | 55,941 psi | 90% | 3343 fps | 100% |
| Vihtavuori N133 | <<locked>> | 96% | 55,434 psi | 89% | 3346 fps | 100% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 55,100 psi | 89% | 3422 fps | 100% |
| Vihtavuori N140 | <<locked>> | 98% | 53,969 psi | 87% | 3376 fps | 99.6% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 46,760 psi | 75% | 3248 fps | 96.7% |
| Vihtavuori N530 | <<locked>> | 94% | 55,085 psi | 89% | 3402 fps | 97.8% |
| Vihtavuori N540ᴾ | <<locked>> | 100% | 55,680 psi | 90% | 3419 fps | 99.5% |
| Winchester 748 | <<locked>> | 94% | 53,055 psi | 86% | 3442 fps | 98.3% |
| Winchester StaBALL Match | <<locked>> | 98% | 55,709 psi | 90% | 3458 fps | 97.3% |
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 1680 | <<locked>> | 80% | 52,431 psi | 85% | 3251 fps | 100% |
| Accurate 2015 | <<locked>> | 80% | 36,941 psi | 60% | 3005 fps | 98.5% |
| Accurate 2460 | <<locked>> | 80% | 39,943 psi | 64% | 3091 fps | 96.6% |
| Accurate 2495 | <<locked>> | 80% | 30,356 psi | 49% | 2877 fps | 96.9% |
| Accurate 2520 | <<locked>> | 82% | 37,536 psi | 61% | 3074 fps | 95.4% |
| Accurate 4064 | <<locked>> | 86% | 34,301 psi | 55% | 3009 fps | 95.6% |
| Accurate LT-30 | <<locked>> | 80% | 44,585 psi | 72% | 3110 fps | 98.9% |
| Accurate LT-32 | <<locked>> | 80% | 44,904 psi | 72% | 3120 fps | 97.4% |
| ADI AR 2206H | <<locked>> | 94% | 51,590 psi | 83% | 3376 fps | 95.7% |
| ADI AR 2207 | <<locked>> | 80% | 48,095 psi | 78% | 3225 fps | 100% |
| ADI AR 2219 | <<locked>> | 80% | 43,468 psi | 70% | 3215 fps | 98.6% |
| ADI Benchmark 8208 | <<locked>> | 88% | 45,310 psi | 73% | 3222 fps | 95.6% |
| Alliant AR-Comp | <<locked>> | 80% | 33,605 psi | 54% | 3022 fps | 99.6% |
| Alliant Power Pro 1200-R | <<locked>> | 86% | 48,327 psi | 78% | 3389 fps | 95.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 96% | 44,715 psi | 72% | 3258 fps | 95.2% |
| Alliant Reloder-10x | <<locked>> | 80% | 41,524 psi | 67% | 3140 fps | 99.8% |
| Alliant Reloder-15 | <<locked>> | 98% | 52,069 psi | 84% | 3402 fps | 95.2% |
| Alliant Reloder-7 | <<locked>> | 80% | 49,472 psi | 80% | 3238 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 43,178 psi | 70% | 3084 fps | 98.9% |
| Bofors RP3 | <<locked>> | 96% | 44,860 psi | 72% | 3268 fps | 95.3% |
| Hodgdon Benchmark | <<locked>> | 84% | 42,438 psi | 68% | 3107 fps | 95.5% |
| Hodgdon BL-C2 | <<locked>> | 86% | 40,480 psi | 65% | 3163 fps | 95% |
| Hodgdon H322 | <<locked>> | 80% | 39,900 psi | 64% | 3133 fps | 97.8% |
| Hodgdon H335 | <<locked>> | 80% | 40,408 psi | 65% | 3136 fps | 97% |
| Hodgdon H4198 | <<locked>> | 80% | 48,834 psi | 79% | 3219 fps | 99.1% |
| Hodgdon H4895 | 33.4 gr | 90% | 45,847 psi | 74% | 3268 fps | 95% |
| Hodgdon LEVERevolution | <<locked>> | 94% | 46,644 psi | 75% | 3330 fps | 95.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,324 psi | 41% | 1906 fps | 100% |
| Hodgdon VARGET | <<locked>> | 92% | 46,891 psi | 76% | 3268 fps | 95.1% |
| IMR 3031 | 28.7 gr | 80% | 32,329 psi | 52% | 2986 fps | 96.3% |
| IMR 4064 | <<locked>> | 98% | 51,648 psi | 83% | 3340 fps | 95.1% |
| IMR 4198 | <<locked>> | 80% | 41,858 psi | 68% | 3110 fps | 100% |
| IMR 4895 | <<locked>> | 96% | 49,850 psi | 80% | 3379 fps | 95.5% |
| IMR 8208 XBR | <<locked>> | 88% | 45,310 psi | 73% | 3222 fps | 95.6% |
| Lovex D073.4 | <<locked>> | 80% | 47,732 psi | 77% | 3278 fps | 97.7% |
| Lovex D073.5 | <<locked>> | 80% | 39,508 psi | 64% | 3077 fps | 95% |
| Lovex D073.6 | <<locked>> | 86% | 38,609 psi | 62% | 3110 fps | 95.7% |
| Lovex S060 | <<locked>> | 92% | 49,342 psi | 80% | 3248 fps | 95.2% |
| Lovex S062 | <<locked>> | 92% | 42,757 psi | 69% | 3176 fps | 95% |
| Norma 200 | <<locked>> | 80% | 47,152 psi | 76% | 3228 fps | 100% |
| Norma 201 | <<locked>> | 90% | 45,194 psi | 73% | 3212 fps | 95.7% |
| Norma 202 | <<locked>> | 82% | 34,925 psi | 56% | 2995 fps | 95.2% |
| Norma 203B | <<locked>> | 98% | 51,155 psi | 83% | 3389 fps | 95.7% |
| Ramshot Big Game | <<locked>> | 98% | 51,242 psi | 83% | 3396 fps | 95.3% |
| Ramshot Wild Boar | <<locked>> | 92% | 50,430 psi | 81% | 3353 fps | 95.4% |
| Ramshot X-Terminator | <<locked>> | 88% | 49,763 psi | 80% | 3278 fps | 95.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,483 psi | 41% | 1952 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 39,769 psi | 64% | 3097 fps | 95.6% |
| ReloadSwiss RS 60 | <<locked>> | 96% | 42,902 psi | 69% | 3281 fps | 95.9% |
| Rottweil R 901 | <<locked>> | 80% | 37,376 psi | 60% | 3012 fps | 95.7% |
| Rottweil R 902 | <<locked>> | 90% | 42,873 psi | 69% | 3150 fps | 95% |
| Shooters World AR Plus | <<locked>> | 80% | 47,732 psi | 77% | 3278 fps | 97.7% |
| Shooters World Match Rifle | <<locked>> | 86% | 38,609 psi | 62% | 3110 fps | 95.7% |
| Shooters World Precision | <<locked>> | 92% | 42,757 psi | 69% | 3176 fps | 95% |
| Shooters World Tactical Rifle | <<locked>> | 82% | 44,817 psi | 72% | 3163 fps | 95% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 49,139 psi | 79% | 2972 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 43,976 psi | 71% | 3212 fps | 97.7% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 41,655 psi | 67% | 3140 fps | 98.8% |
| SNPE Vectan SP 9 | <<locked>> | 94% | 49,734 psi | 80% | 3327 fps | 95.2% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 35,085 psi | 57% | 2907 fps | 95.2% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 32,184 psi | 52% | 2844 fps | 95.5% |
| Somchem S321 | <<locked>> | 84% | 42,873 psi | 69% | 3186 fps | 95.3% |
| Somchem S335 | <<locked>> | 80% | 34,519 psi | 56% | 2907 fps | 96.1% |
| Somchem S341 | <<locked>> | 94% | 51,837 psi | 84% | 3346 fps | 95.6% |
| Vihtavuori N120 | <<locked>> | 80% | 47,979 psi | 77% | 3169 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 39,552 psi | 64% | 3031 fps | 99.5% |
| Vihtavuori N133 | <<locked>> | 80% | 34,664 psi | 56% | 2920 fps | 97.8% |
| Vihtavuori N135 | <<locked>> | 80% | 30,139 psi | 49% | 2874 fps | 96.7% |
| Vihtavuori N140 | <<locked>> | 82% | 33,083 psi | 53% | 2917 fps | 95% |
| Vihtavuori N150 | <<locked>> | 96% | 41,133 psi | 66% | 3127 fps | 95.2% |
| Vihtavuori N530 | <<locked>> | 88% | 45,310 psi | 73% | 3212 fps | 95.7% |
| Vihtavuori N540 | <<locked>> | 86% | 36,143 psi | 58% | 3012 fps | 95.5% |
| Winchester 748 | 33.4 gr | 86% | 41,046 psi | 66% | 3186 fps | 95.4% |
| Winchester StaBALL Match | <<locked>> | 92% | 46,050 psi | 74% | 3274 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 74 powders for 6 mm GT loaded with the .243 | 65gr | Impala LWHV LS. Alliant Power Pro 1200-R delivers the highest muzzle velocity at 3,520 fps; across all powders the maximum-charge window runs from 2,126 fps to 3,520 fps. Accurate 4064 gives the best case fill at 100 %, and 74 of the 74 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 65.0 gr projectile in 0.243" calls for a 1:8.5 twist; slower twists will usually not stabilise this weight. Accurate 4064, Alliant Reloder- TS 15.5, Alliant Reloder-15 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. IMR 3031, Hodgdon H4895, Winchester 748 rank at the top here: for 6 mm GT with the .243 | 65gr | Impala LWHV LS 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.