Load Specifications
Load data in caliber 6 mm GT with .243 | 65gr | Berger ND bullet and 78 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Power Pro 1200-R, IMR 3031 and Hodgdon H4895.
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 1680 | <<locked>> | 82% | 54,578 psi | 88% | 3320 fps | 100% |
| Accurate 2015 | <<locked>> | 94% | 54,230 psi | 87% | 3392 fps | 100% |
| Accurate 2200 | <<locked>> | 86% | 55,317 psi | 89% | 3484 fps | 95.9% |
| Accurate 2460 | <<locked>> | 90% | 53,214 psi | 86% | 3402 fps | 99.3% |
| Accurate 2495ᴾ | <<locked>> | 100% | 54,143 psi | 87% | 3442 fps | 100% |
| Accurate 2520 | <<locked>> | 94% | 54,462 psi | 88% | 3461 fps | 99.3% |
| Accurate 4064ᴾ | <<locked>> | 100% | 50,183 psi | 81% | 3406 fps | 99.4% |
| Accurate LT-30 | <<locked>> | 88% | 55,492 psi | 90% | 3350 fps | 100% |
| Accurate LT-32 | <<locked>> | 88% | 55,956 psi | 90% | 3369 fps | 99.3% |
| ADI AR 2206H | <<locked>> | 96% | 53,664 psi | 87% | 3451 fps | 96.6% |
| ADI AR 2207 | <<locked>> | 84% | 52,866 psi | 85% | 3343 fps | 100% |
| ADI AR 2219 | <<locked>> | 88% | 55,521 psi | 90% | 3478 fps | 99.9% |
| ADI Benchmark 8208 | <<locked>> | 94% | 53,127 psi | 86% | 3412 fps | 97.8% |
| Alliant AR-Comp | <<locked>> | 96% | 54,984 psi | 89% | 3488 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 90% | 54,099 psi | 87% | 3540 fps | 97.4% |
| Alliant Reloder- TS 15.5ᴾ | <<locked>> | 100% | 49,690 psi | 80% | 3392 fps | 96.8% |
| Alliant Reloder-10x | <<locked>> | 90% | 54,404 psi | 88% | 3422 fps | 100% |
| Alliant Reloder-15ᴾ | <<locked>> | 100% | 54,128 psi | 87% | 3478 fps | 96.2% |
| Alliant Reloder-7 | <<locked>> | 84% | 54,375 psi | 88% | 3360 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 88% | 54,926 psi | 89% | 3333 fps | 100% |
| Bofors RP3ᴾ | <<locked>> | 100% | 49,487 psi | 80% | 3396 fps | 96.9% |
| Hodgdon Benchmark | <<locked>> | 94% | 55,579 psi | 90% | 3412 fps | 98.6% |
| Hodgdon BL-C2 | <<locked>> | 96% | 55,259 psi | 89% | 3501 fps | 98.7% |
| Hodgdon CFE223 | <<locked>> | 92% | 53,069 psi | 86% | 3524 fps | 95.8% |
| Hodgdon H322 | <<locked>> | 90% | 53,635 psi | 87% | 3448 fps | 99.9% |
| Hodgdon H335 | <<locked>> | 90% | 55,100 psi | 89% | 3468 fps | 99.6% |
| Hodgdon H4198 | <<locked>> | 84% | 53,969 psi | 87% | 3353 fps | 99.7% |
| Hodgdon H4895 | <<locked>> | 96% | 54,056 psi | 87% | 3471 fps | 97.3% |
| Hodgdon LEVERevolutionᴾ | <<locked>> | 100% | 55,738 psi | 90% | 3543 fps | 98.1% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 33,315 psi | 54% | 2146 fps | 100% |
| Hodgdon VARGET | <<locked>> | 98% | 55,680 psi | 90% | 3471 fps | 97.5% |
| IMR 3031 | <<locked>> | 98% | 55,738 psi | 90% | 3540 fps | 100% |
| IMR 4064ᴾ | <<locked>> | 100% | 54,041 psi | 87% | 3419 fps | 96.1% |
| IMR 4198 | <<locked>> | 90% | 55,187 psi | 89% | 3392 fps | 100% |
| IMR 4895ᴾ | <<locked>> | 100% | 55,463 psi | 89% | 3524 fps | 97.1% |
| IMR 8208 XBR | <<locked>> | 94% | 53,127 psi | 86% | 3412 fps | 97.8% |
| Lovex D073.4 | <<locked>> | 84% | 53,272 psi | 86% | 3422 fps | 98.9% |
| Lovex D073.5 | <<locked>> | 90% | 53,345 psi | 86% | 3406 fps | 98.6% |
| Lovex D073.6 | <<locked>> | 98% | 55,637 psi | 90% | 3491 fps | 99.4% |
| Lovex S053 | <<locked>> | 82% | 55,738 psi | 90% | 3287 fps | 100% |
| Lovex S060 | <<locked>> | 96% | 54,621 psi | 88% | 3386 fps | 96.8% |
| Lovex S062ᴾ | <<locked>> | 100% | 53,011 psi | 86% | 3419 fps | 97.9% |
| Norma 200 | <<locked>> | 86% | 54,505 psi | 88% | 3396 fps | 100% |
| Norma 201 | <<locked>> | 98% | 55,550 psi | 90% | 3455 fps | 98.2% |
| Norma 202 | <<locked>> | 98% | 55,680 psi | 90% | 3474 fps | 99.7% |
| Norma 203Bᴾ | <<locked>> | 100% | 53,113 psi | 86% | 3461 fps | 96.6% |
| Ramshot Big Gameᴾ | <<locked>> | 100% | 53,954 psi | 87% | 3481 fps | 96.4% |
| Ramshot Wild Boar | <<locked>> | 94% | 52,837 psi | 85% | 3435 fps | 96.4% |
| Ramshot X-Terminator | <<locked>> | 92% | 55,114 psi | 89% | 3412 fps | 96.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 33,576 psi | 54% | 2198 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 90% | 52,953 psi | 85% | 3412 fps | 98.8% |
| ReloadSwiss RS 52 | <<locked>> | 98% | 53,621 psi | 86% | 3547 fps | 96% |
| ReloadSwiss RS 60ᴾ | <<locked>> | 100% | 47,485 psi | 77% | 3435 fps | 97.9% |
| Rottweil R 901 | <<locked>> | 94% | 53,258 psi | 86% | 3402 fps | 99.3% |
| Rottweil R 902ᴾ | <<locked>> | 100% | 55,651 psi | 90% | 3442 fps | 98.2% |
| Shooters World AR Plus | <<locked>> | 84% | 53,272 psi | 86% | 3422 fps | 98.9% |
| Shooters World Match Rifle | <<locked>> | 98% | 55,637 psi | 90% | 3491 fps | 99.4% |
| Shooters World Precisionᴾ | <<locked>> | 100% | 53,011 psi | 86% | 3419 fps | 97.9% |
| Shooters World Tactical Rifle | <<locked>> | 88% | 53,534 psi | 86% | 3369 fps | 97.4% |
| SNPE Vectan BA6 1/2 | <<locked>> | 84% | 53,055 psi | 86% | 3064 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 88% | 55,999 psi | 90% | 3478 fps | 99.6% |
| SNPE Vectan SP 3 | <<locked>> | 90% | 55,535 psi | 90% | 3442 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 98% | 55,709 psi | 90% | 3474 fps | 97% |
| SNPE Vectan Tubal 3000 | <<locked>> | 96% | 55,201 psi | 89% | 3369 fps | 99.6% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 50,662 psi | 82% | 3291 fps | 99.7% |
| Somchem S321 | <<locked>> | 92% | 54,491 psi | 88% | 3455 fps | 98.3% |
| Somchem S335 | <<locked>> | 96% | 53,853 psi | 87% | 3360 fps | 99.8% |
| Somchem S341 | <<locked>> | 96% | 54,853 psi | 88% | 3432 fps | 96.7% |
| Vihtavuori N120 | <<locked>> | 86% | 56,043 psi | 90% | 3333 fps | 100% |
| Vihtavuori N130 | <<locked>> | 92% | 54,723 psi | 88% | 3360 fps | 100% |
| Vihtavuori N133 | <<locked>> | 96% | 54,650 psi | 88% | 3363 fps | 100% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 53,838 psi | 87% | 3432 fps | 100% |
| Vihtavuori N140 | <<locked>> | 98% | 52,750 psi | 85% | 3389 fps | 99.6% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 45,600 psi | 74% | 3258 fps | 96.8% |
| Vihtavuori N530 | <<locked>> | 94% | 53,853 psi | 87% | 3415 fps | 97.9% |
| Vihtavuori N540ᴾ | <<locked>> | 100% | 55,027 psi | 89% | 3442 fps | 99.6% |
| Winchester 748 | <<locked>> | 96% | 55,999 psi | 90% | 3524 fps | 99% |
| Winchester StaBALL Match | <<locked>> | 98% | 55,158 psi | 89% | 3481 fps | 97.5% |
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% | 51,068 psi | 82% | 3261 fps | 100% |
| Accurate 2015 | <<locked>> | 80% | 34,606 psi | 56% | 2986 fps | 98.2% |
| Accurate 2200 | <<locked>> | 84% | 51,619 psi | 83% | 3412 fps | 95% |
| Accurate 2460 | <<locked>> | 80% | 37,492 psi | 60% | 3071 fps | 96.2% |
| Accurate 2495 | <<locked>> | 80% | 27,224 psi | 44% | 2822 fps | 95.9% |
| Accurate 2520 | <<locked>> | 82% | 35,534 psi | 57% | 3058 fps | 95% |
| Accurate 4064 | <<locked>> | 88% | 33,576 psi | 54% | 3028 fps | 95.7% |
| Accurate LT-30 | <<locked>> | 80% | 43,613 psi | 70% | 3123 fps | 99% |
| Accurate LT-32 | <<locked>> | 80% | 43,961 psi | 71% | 3136 fps | 97.5% |
| ADI AR 2206H | <<locked>> | 92% | 47,007 psi | 76% | 3320 fps | 95% |
| ADI AR 2207 | <<locked>> | 80% | 46,847 psi | 76% | 3238 fps | 100% |
| ADI AR 2219 | <<locked>> | 80% | 42,047 psi | 68% | 3215 fps | 98.6% |
| ADI Benchmark 8208 | <<locked>> | 88% | 43,932 psi | 71% | 3225 fps | 95.7% |
| Alliant AR-Comp | <<locked>> | 80% | 31,966 psi | 52% | 3009 fps | 99.5% |
| Alliant Power Pro 1200-R | 33.2 gr | 86% | 47,094 psi | 76% | 3399 fps | 95.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 96% | 43,714 psi | 71% | 3268 fps | 95.3% |
| Alliant Reloder-10x | <<locked>> | 80% | 39,566 psi | 64% | 3130 fps | 99.7% |
| Alliant Reloder-15 | <<locked>> | 98% | 50,604 psi | 82% | 3409 fps | 95.3% |
| Alliant Reloder-7 | <<locked>> | 80% | 47,993 psi | 77% | 3248 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 42,047 psi | 68% | 3094 fps | 99% |
| Bofors RP3 | <<locked>> | 96% | 43,323 psi | 70% | 3268 fps | 95.3% |
| Hodgdon Benchmark | <<locked>> | 84% | 40,872 psi | 66% | 3110 fps | 95.4% |
| Hodgdon BL-C2 | <<locked>> | 88% | 41,742 psi | 67% | 3228 fps | 95.8% |
| Hodgdon CFE223 | <<locked>> | 90% | 49,647 psi | 80% | 3455 fps | 95% |
| Hodgdon H322 | <<locked>> | 80% | 38,479 psi | 62% | 3130 fps | 97.7% |
| Hodgdon H335 | <<locked>> | 80% | 39,030 psi | 63% | 3136 fps | 96.9% |
| Hodgdon H4198 | <<locked>> | 80% | 47,993 psi | 77% | 3241 fps | 99.2% |
| Hodgdon H4895 | 34.8 gr | 90% | 44,614 psi | 72% | 3278 fps | 95% |
| Hodgdon LEVERevolution | <<locked>> | 94% | 45,614 psi | 74% | 3346 fps | 95.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 24,598 psi | 40% | 1923 fps | 100% |
| Hodgdon VARGET | <<locked>> | 92% | 45,905 psi | 74% | 3281 fps | 95.3% |
| IMR 3031 | 29.9 gr | 80% | 30,618 psi | 49% | 2972 fps | 95.9% |
| IMR 4064 | <<locked>> | 98% | 50,488 psi | 81% | 3353 fps | 95.3% |
| IMR 4198 | <<locked>> | 80% | 40,727 psi | 66% | 3123 fps | 100% |
| IMR 4895 | <<locked>> | 96% | 48,776 psi | 79% | 3392 fps | 95.6% |
| IMR 8208 XBR | <<locked>> | 88% | 43,932 psi | 71% | 3225 fps | 95.7% |
| Lovex D073.4 | <<locked>> | 80% | 45,948 psi | 74% | 3281 fps | 97.7% |
| Lovex D073.5 | <<locked>> | 82% | 40,263 psi | 65% | 3136 fps | 95.7% |
| Lovex D073.6 | <<locked>> | 86% | 36,535 psi | 59% | 3094 fps | 95.4% |
| Lovex S053 | <<locked>> | 80% | 52,605 psi | 85% | 3238 fps | 100% |
| Lovex S060 | <<locked>> | 92% | 48,385 psi | 78% | 3264 fps | 95.4% |
| Lovex S062 | <<locked>> | 92% | 41,220 psi | 66% | 3176 fps | 95% |
| Norma 200 | <<locked>> | 80% | 44,904 psi | 72% | 3222 fps | 100% |
| Norma 201 | <<locked>> | 90% | 43,134 psi | 70% | 3209 fps | 95.5% |
| Norma 202 | <<locked>> | 84% | 35,462 psi | 57% | 3045 fps | 95.8% |
| Norma 203B | <<locked>> | 96% | 46,818 psi | 76% | 3337 fps | 95% |
| Ramshot Big Game | <<locked>> | 98% | 50,473 psi | 81% | 3415 fps | 95.6% |
| Ramshot Wild Boar | <<locked>> | 92% | 49,443 psi | 80% | 3366 fps | 95.6% |
| Ramshot X-Terminator | <<locked>> | 88% | 48,486 psi | 78% | 3287 fps | 95.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 24,627 psi | 40% | 1969 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 38,145 psi | 62% | 3091 fps | 95.5% |
| ReloadSwiss RS 52 | <<locked>> | 96% | 50,038 psi | 81% | 3474 fps | 95.1% |
| ReloadSwiss RS 60 | <<locked>> | 96% | 41,611 psi | 67% | 3291 fps | 96.1% |
| Rottweil R 901 | <<locked>> | 80% | 34,592 psi | 56% | 2986 fps | 95.1% |
| Rottweil R 902 | <<locked>> | 92% | 43,613 psi | 70% | 3205 fps | 95.6% |
| Shooters World AR Plus | <<locked>> | 80% | 45,948 psi | 74% | 3281 fps | 97.7% |
| Shooters World Match Rifle | <<locked>> | 86% | 36,535 psi | 59% | 3094 fps | 95.4% |
| Shooters World Precision | <<locked>> | 92% | 41,220 psi | 66% | 3176 fps | 95% |
| Shooters World Tactical Rifle | <<locked>> | 82% | 43,323 psi | 70% | 3169 fps | 95% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 47,964 psi | 77% | 2986 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 42,641 psi | 69% | 3215 fps | 97.7% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 40,161 psi | 65% | 3143 fps | 98.8% |
| SNPE Vectan SP 9 | <<locked>> | 94% | 48,820 psi | 79% | 3346 fps | 95.5% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 35,244 psi | 57% | 2949 fps | 95.7% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 30,574 psi | 49% | 2838 fps | 95.2% |
| Somchem S321 | <<locked>> | 84% | 41,466 psi | 67% | 3186 fps | 95.3% |
| Somchem S335 | <<locked>> | 80% | 32,576 psi | 53% | 2894 fps | 95.7% |
| Somchem S341 | <<locked>> | 92% | 47,500 psi | 77% | 3294 fps | 95% |
| Vihtavuori N120 | <<locked>> | 80% | 46,862 psi | 76% | 3186 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 37,739 psi | 61% | 3025 fps | 99.4% |
| Vihtavuori N133 | <<locked>> | 80% | 32,996 psi | 53% | 2913 fps | 97.6% |
| Vihtavuori N135 | <<locked>> | 80% | 27,963 psi | 45% | 2841 fps | 96% |
| Vihtavuori N140 | <<locked>> | 84% | 33,547 psi | 54% | 2969 fps | 95.6% |
| Vihtavuori N150 | <<locked>> | 96% | 39,943 psi | 64% | 3133 fps | 95.2% |
| Vihtavuori N530 | <<locked>> | 88% | 44,179 psi | 71% | 3225 fps | 95.8% |
| Vihtavuori N540 | <<locked>> | 86% | 34,461 psi | 56% | 3002 fps | 95.3% |
| Winchester 748 | <<locked>> | 86% | 39,813 psi | 64% | 3192 fps | 95.5% |
| Winchester StaBALL Match | <<locked>> | 92% | 44,962 psi | 73% | 3284 fps | 95.2% |
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 92 powders for 6 mm GT loaded with the .243 | 65gr | Berger ND. ReloadSwiss RS 52 delivers the highest muzzle velocity at 3,547 fps; across all powders the maximum-charge window runs from 2,146 fps to 3,547 fps. Accurate 2495 gives the best case fill at 100 %, and 92 of the 92 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 65.0 gr projectile in 0.243" calls for a 1:11.5 twist; slower twists will usually not stabilise this weight. Accurate 2495, Accurate 4064, ADI AR 2208 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 1200-R, IMR 3031, Hodgdon H4895 rank at the top here: for 6 mm GT with the .243 | 65gr | Berger ND they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Alliant Reloder-17, Hodgdon H380, IMR 4166 Enduron burn incompletely and react more sensitively to barrel length and temperature. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.