Load Specifications
Load data in caliber 6 mm GT with .243 | 70gr | Nosler Varmageddon bullet and 84 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 52, Hodgdon CFE223 and Alliant Power Pro 1200-R.
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% | 55,999 psi | 90% | 3225 fps | 100% |
| Accurate 2015 | <<locked>> | 94% | 55,579 psi | 90% | 3297 fps | 100% |
| Accurate 2200 | <<locked>> | 84% | 53,127 psi | 86% | 3330 fps | 96% |
| Accurate 2230 | <<locked>> | 84% | 53,795 psi | 87% | 3337 fps | 96.6% |
| Accurate 2460 | <<locked>> | 90% | 54,404 psi | 88% | 3310 fps | 99.7% |
| Accurate 2495ᴾ | <<locked>> | 100% | 55,753 psi | 90% | 3350 fps | 100% |
| Accurate 2520 | <<locked>> | 94% | 55,506 psi | 90% | 3366 fps | 99.6% |
| Accurate 4064ᴾ | <<locked>> | 100% | 51,576 psi | 83% | 3320 fps | 99.8% |
| Accurate LT-30 | <<locked>> | 86% | 53,156 psi | 86% | 3196 fps | 100% |
| Accurate LT-32 | <<locked>> | 86% | 53,548 psi | 86% | 3212 fps | 99.4% |
| ADI AR 2206H | <<locked>> | 96% | 54,868 psi | 88% | 3363 fps | 97.4% |
| ADI AR 2207 | <<locked>> | 84% | 54,085 psi | 87% | 3238 fps | 100% |
| ADI AR 2208ᴾ | <<locked>> | 100% | 52,489 psi | 85% | 3287 fps | 96.1% |
| ADI AR 2219 | <<locked>> | 86% | 53,098 psi | 86% | 3320 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 94% | 54,172 psi | 87% | 3320 fps | 98.4% |
| Alliant AR-Comp | <<locked>> | 94% | 52,765 psi | 85% | 3330 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 90% | 55,114 psi | 89% | 3445 fps | 98.1% |
| Alliant Power Pro 2000-MR | <<locked>> | 98% | 54,491 psi | 88% | 3455 fps | 96.2% |
| Alliant Reloder- TS 15.5ᴾ | <<locked>> | 100% | 51,024 psi | 82% | 3310 fps | 97.6% |
| Alliant Reloder-10x | <<locked>> | 90% | 55,492 psi | 90% | 3320 fps | 100% |
| Alliant Reloder-15ᴾ | <<locked>> | 100% | 55,622 psi | 90% | 3392 fps | 97% |
| Alliant Reloder-7 | <<locked>> | 84% | 55,637 psi | 90% | 3258 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 88% | 55,941 psi | 90% | 3238 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 96% | 54,607 psi | 88% | 3363 fps | 96.2% |
| Bofors RP3ᴾ | <<locked>> | 100% | 51,082 psi | 82% | 3320 fps | 97.7% |
| Hodgdon Benchmark | <<locked>> | 92% | 53,766 psi | 87% | 3268 fps | 98.8% |
| Hodgdon BL-C2 | <<locked>> | 94% | 52,620 psi | 85% | 3343 fps | 98.7% |
| Hodgdon CFE223 | <<locked>> | 92% | 54,534 psi | 88% | 3445 fps | 96.8% |
| Hodgdon H322 | <<locked>> | 90% | 55,013 psi | 89% | 3353 fps | 100% |
| Hodgdon H335 | <<locked>> | 88% | 52,562 psi | 85% | 3310 fps | 99.7% |
| Hodgdon H4198 | <<locked>> | 84% | 55,158 psi | 89% | 3255 fps | 99.9% |
| Hodgdon H4895 | <<locked>> | 96% | 55,245 psi | 89% | 3379 fps | 98% |
| Hodgdon LEVERevolution | <<locked>> | 98% | 53,635 psi | 87% | 3399 fps | 98.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 33,475 psi | 54% | 2057 fps | 100% |
| Hodgdon VARGET | <<locked>> | 96% | 53,621 psi | 86% | 3327 fps | 97.6% |
| IMR 3031 | <<locked>> | 96% | 53,563 psi | 86% | 3386 fps | 100% |
| IMR 4064ᴾ | <<locked>> | 100% | 55,288 psi | 89% | 3330 fps | 97% |
| IMR 4198 | <<locked>> | 90% | 55,956 psi | 90% | 3281 fps | 100% |
| IMR 4895 | <<locked>> | 98% | 53,113 psi | 86% | 3369 fps | 97.2% |
| IMR 8208 XBR | <<locked>> | 94% | 54,172 psi | 87% | 3320 fps | 98.4% |
| Lovex D073.4 | <<locked>> | 84% | 54,244 psi | 87% | 3323 fps | 99.4% |
| Lovex D073.5 | <<locked>> | 90% | 54,621 psi | 88% | 3317 fps | 99.1% |
| Lovex D073.6 | <<locked>> | 96% | 53,374 psi | 86% | 3340 fps | 99.4% |
| Lovex S060 | <<locked>> | 96% | 55,564 psi | 90% | 3291 fps | 97.5% |
| Lovex S062ᴾ | <<locked>> | 100% | 54,317 psi | 88% | 3333 fps | 98.5% |
| Norma 200 | <<locked>> | 86% | 55,564 psi | 90% | 3294 fps | 100% |
| Norma 201 | <<locked>> | 96% | 53,403 psi | 86% | 3307 fps | 98.3% |
| Norma 202 | <<locked>> | 96% | 53,664 psi | 87% | 3327 fps | 99.7% |
| Norma 203Bᴾ | <<locked>> | 100% | 54,607 psi | 88% | 3379 fps | 97.4% |
| Ramshot Big Gameᴾ | <<locked>> | 100% | 55,274 psi | 89% | 3399 fps | 97.3% |
| Ramshot Wild Boar | <<locked>> | 94% | 53,809 psi | 87% | 3343 fps | 97.2% |
| Ramshot X-Terminator | <<locked>> | 90% | 52,750 psi | 85% | 3261 fps | 96.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 33,779 psi | 54% | 2110 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 90% | 54,288 psi | 88% | 3323 fps | 99.3% |
| ReloadSwiss RS 52 | <<locked>> | 98% | 54,810 psi | 88% | 3458 fps | 96.8% |
| ReloadSwiss RS 60ᴾ | <<locked>> | 100% | 48,559 psi | 78% | 3356 fps | 98.7% |
| Rottweil R 901 | <<locked>> | 94% | 54,491 psi | 88% | 3310 fps | 99.7% |
| Rottweil R 902 | <<locked>> | 98% | 53,592 psi | 86% | 3297 fps | 98.3% |
| Rottweil R 903ᴾ | <<locked>> | 100% | 47,340 psi | 76% | 3238 fps | 96.6% |
| Shooters World AR Plus | <<locked>> | 84% | 54,244 psi | 87% | 3323 fps | 99.4% |
| Shooters World Match Rifle | <<locked>> | 96% | 53,374 psi | 86% | 3340 fps | 99.4% |
| Shooters World Precisionᴾ | <<locked>> | 100% | 54,317 psi | 88% | 3333 fps | 98.5% |
| Shooters World Tactical Rifle | <<locked>> | 88% | 54,563 psi | 88% | 3281 fps | 98.1% |
| SNPE Vectan BA6 1/2 | <<locked>> | 84% | 53,882 psi | 87% | 2959 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 86% | 53,388 psi | 86% | 3320 fps | 99.7% |
| SNPE Vectan SP 11ᴾ | <<locked>> | 100% | 49,719 psi | 80% | 3307 fps | 96.2% |
| SNPE Vectan SP 3 | <<locked>> | 88% | 53,258 psi | 86% | 3287 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 96% | 53,447 psi | 86% | 3327 fps | 97.1% |
| SNPE Vectan Tubal 3000 | <<locked>> | 96% | 56,028 psi | 90% | 3271 fps | 99.8% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 51,735 psi | 83% | 3202 fps | 99.9% |
| Somchem S321 | <<locked>> | 92% | 55,912 psi | 90% | 3366 fps | 98.9% |
| Somchem S335 | <<locked>> | 96% | 54,853 psi | 88% | 3264 fps | 100% |
| Somchem S341 | <<locked>> | 96% | 55,999 psi | 90% | 3346 fps | 97.5% |
| Somchem S355ᴾ | <<locked>> | 100% | 48,501 psi | 78% | 3248 fps | 96.6% |
| Vihtavuori N120 | <<locked>> | 84% | 53,998 psi | 87% | 3179 fps | 100% |
| Vihtavuori N130 | <<locked>> | 92% | 55,811 psi | 90% | 3258 fps | 100% |
| Vihtavuori N133 | <<locked>> | 96% | 55,550 psi | 90% | 3264 fps | 100% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 55,100 psi | 89% | 3337 fps | 100% |
| Vihtavuori N140 | <<locked>> | 98% | 54,012 psi | 87% | 3297 fps | 99.9% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 46,833 psi | 76% | 3176 fps | 97.6% |
| Vihtavuori N530 | <<locked>> | 94% | 54,984 psi | 89% | 3327 fps | 98.5% |
| Vihtavuori N540 | <<locked>> | 98% | 52,417 psi | 85% | 3287 fps | 99.6% |
| Winchester 748 | <<locked>> | 94% | 53,664 psi | 87% | 3373 fps | 99% |
| Winchester StaBALL Match | <<locked>> | 96% | 52,547 psi | 85% | 3327 fps | 97.6% |
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 1680 | <<locked>> | 80% | 52,344 psi | 84% | 3169 fps | 100% |
| Accurate 2015 | <<locked>> | 80% | 35,766 psi | 58% | 2910 fps | 98.9% |
| Accurate 2200 | <<locked>> | 82% | 49,516 psi | 80% | 3258 fps | 95.2% |
| Accurate 2230 | <<locked>> | 82% | 50,082 psi | 81% | 3264 fps | 95.8% |
| Accurate 2460 | <<locked>> | 80% | 38,696 psi | 62% | 2999 fps | 97.2% |
| Accurate 2495 | <<locked>> | 80% | 28,079 psi | 45% | 2756 fps | 97% |
| Accurate 2520 | <<locked>> | 80% | 33,939 psi | 55% | 2917 fps | 95.1% |
| Accurate 4064 | <<locked>> | 84% | 30,472 psi | 49% | 2841 fps | 95.1% |
| Accurate LT-30 | <<locked>> | 80% | 44,440 psi | 72% | 3035 fps | 99.4% |
| Accurate LT-32 | <<locked>> | 80% | 44,744 psi | 72% | 3048 fps | 98.2% |
| ADI AR 2206H | <<locked>> | 90% | 45,179 psi | 73% | 3176 fps | 95.2% |
| ADI AR 2207 | <<locked>> | 80% | 47,732 psi | 77% | 3136 fps | 100% |
| ADI AR 2208 | <<locked>> | 98% | 49,429 psi | 80% | 3232 fps | 95.4% |
| ADI AR 2219 | <<locked>> | 80% | 43,236 psi | 70% | 3133 fps | 99.1% |
| ADI Benchmark 8208 | <<locked>> | 84% | 39,566 psi | 64% | 3022 fps | 95% |
| Alliant AR-Comp | <<locked>> | 80% | 32,837 psi | 53% | 2933 fps | 99.8% |
| Alliant Power Pro 1200-R | 30.7 gr | 82% | 42,177 psi | 68% | 3176 fps | 95% |
| Alliant Power Pro 2000-MR | <<locked>> | 96% | 50,865 psi | 82% | 3379 fps | 95.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 94% | 42,061 psi | 68% | 3130 fps | 95.5% |
| Alliant Reloder-10x | <<locked>> | 80% | 40,799 psi | 66% | 3048 fps | 99.9% |
| Alliant Reloder-15 | <<locked>> | 96% | 48,820 psi | 79% | 3268 fps | 95.5% |
| Alliant Reloder-7 | <<locked>> | 80% | 48,936 psi | 79% | 3150 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 43,236 psi | 70% | 3015 fps | 99.4% |
| Baschieri & Pellagri 107 | <<locked>> | 94% | 51,053 psi | 82% | 3297 fps | 95.4% |
| Bofors RP3 | <<locked>> | 94% | 41,452 psi | 67% | 3123 fps | 95.4% |
| Hodgdon Benchmark | <<locked>> | 82% | 39,537 psi | 64% | 2976 fps | 95.7% |
| Hodgdon BL-C2 | <<locked>> | 86% | 39,871 psi | 64% | 3081 fps | 95.9% |
| Hodgdon CFE223 | 36 gr | 88% | 47,543 psi | 77% | 3304 fps | 95.1% |
| Hodgdon H322 | <<locked>> | 80% | 39,523 psi | 64% | 3051 fps | 98.5% |
| Hodgdon H335 | <<locked>> | 80% | 39,929 psi | 64% | 3058 fps | 97.7% |
| Hodgdon H4198 | <<locked>> | 80% | 48,878 psi | 79% | 3143 fps | 99.6% |
| Hodgdon H4895 | <<locked>> | 88% | 42,786 psi | 69% | 3130 fps | 95.2% |
| Hodgdon LEVERevolution | <<locked>> | 90% | 40,857 psi | 66% | 3130 fps | 95% |
| Hodgdon TrailBoss | <<locked>> | 80% | 24,801 psi | 40% | 1844 fps | 100% |
| Hodgdon VARGET | <<locked>> | 90% | 44,048 psi | 71% | 3136 fps | 95.4% |
| IMR 3031 | <<locked>> | 80% | 31,415 psi | 51% | 2900 fps | 97% |
| IMR 4064 | <<locked>> | 96% | 48,559 psi | 78% | 3209 fps | 95.5% |
| IMR 4198 | <<locked>> | 80% | 41,756 psi | 67% | 3031 fps | 100% |
| IMR 4895 | <<locked>> | 94% | 46,673 psi | 75% | 3245 fps | 95.7% |
| IMR 8208 XBR | <<locked>> | 84% | 39,566 psi | 64% | 3022 fps | 95% |
| Lovex D073.4 | <<locked>> | 80% | 46,992 psi | 76% | 3192 fps | 98.4% |
| Lovex D073.5 | <<locked>> | 80% | 38,551 psi | 62% | 2995 fps | 95.8% |
| Lovex D073.6 | <<locked>> | 84% | 35,012 psi | 56% | 2956 fps | 95.5% |
| Lovex S060 | <<locked>> | 90% | 46,282 psi | 75% | 3117 fps | 95.5% |
| Lovex S062 | <<locked>> | 90% | 39,479 psi | 64% | 3031 fps | 95.1% |
| Norma 200 | <<locked>> | 80% | 45,934 psi | 74% | 3130 fps | 100% |
| Norma 201 | <<locked>> | 88% | 41,626 psi | 67% | 3071 fps | 95.8% |
| Norma 202 | <<locked>> | 80% | 31,995 psi | 52% | 2848 fps | 95.1% |
| Norma 203B | <<locked>> | 94% | 44,730 psi | 72% | 3186 fps | 95.1% |
| Ramshot Big Game | <<locked>> | 96% | 48,196 psi | 78% | 3264 fps | 95.7% |
| Ramshot Wild Boar | <<locked>> | 90% | 47,007 psi | 76% | 3215 fps | 95.6% |
| Ramshot X-Terminator | <<locked>> | 86% | 46,267 psi | 75% | 3136 fps | 95.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 24,860 psi | 40% | 1886 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 39,189 psi | 63% | 3015 fps | 96.5% |
| ReloadSwiss RS 52 | 36.4 gr | 94% | 47,950 psi | 77% | 3323 fps | 95.2% |
| ReloadSwiss RS 60 | <<locked>> | 92% | 37,333 psi | 60% | 3077 fps | 95.1% |
| Rottweil R 901 | <<locked>> | 80% | 35,650 psi | 57% | 2910 fps | 96.2% |
| Rottweil R 902 | <<locked>> | 88% | 39,320 psi | 63% | 3005 fps | 95% |
| Rottweil R 903 | <<locked>> | 98% | 44,005 psi | 71% | 3169 fps | 95.8% |
| Shooters World AR Plus | <<locked>> | 80% | 46,992 psi | 76% | 3192 fps | 98.4% |
| Shooters World Match Rifle | <<locked>> | 84% | 35,012 psi | 56% | 2956 fps | 95.5% |
| Shooters World Precision | <<locked>> | 90% | 39,479 psi | 64% | 3031 fps | 95.1% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 41,350 psi | 67% | 3022 fps | 95.1% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 48,617 psi | 78% | 2881 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 43,540 psi | 70% | 3130 fps | 98.4% |
| SNPE Vectan SP 11 | <<locked>> | 98% | 46,398 psi | 75% | 3238 fps | 95.3% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 41,423 psi | 67% | 3061 fps | 99.3% |
| SNPE Vectan SP 9 | <<locked>> | 92% | 46,717 psi | 75% | 3196 fps | 95.6% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 34,156 psi | 55% | 2825 fps | 96% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 29,457 psi | 48% | 2710 fps | 95.4% |
| Somchem S321 | <<locked>> | 82% | 39,740 psi | 64% | 3045 fps | 95.4% |
| Somchem S335 | <<locked>> | 80% | 33,330 psi | 54% | 2818 fps | 96.7% |
| Somchem S341 | <<locked>> | 90% | 45,527 psi | 73% | 3156 fps | 95.1% |
| Somchem S355 | <<locked>> | 96% | 42,583 psi | 69% | 3123 fps | 95.1% |
| Vihtavuori N120 | <<locked>> | 80% | 47,732 psi | 77% | 3084 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 38,812 psi | 63% | 2946 fps | 99.8% |
| Vihtavuori N133 | <<locked>> | 80% | 33,997 psi | 55% | 2838 fps | 98.4% |
| Vihtavuori N135 | <<locked>> | 80% | 28,993 psi | 47% | 2779 fps | 97.2% |
| Vihtavuori N140 | <<locked>> | 82% | 32,213 psi | 52% | 2835 fps | 95.7% |
| Vihtavuori N150 | <<locked>> | 94% | 38,087 psi | 61% | 2989 fps | 95.3% |
| Vihtavuori N530 | <<locked>> | 84% | 39,363 psi | 63% | 3012 fps | 95% |
| Vihtavuori N540 | <<locked>> | 84% | 33,243 psi | 54% | 2871 fps | 95.5% |
| Winchester 748 | <<locked>> | 84% | 38,174 psi | 62% | 3051 fps | 95.6% |
| Winchester StaBALL Match | <<locked>> | 90% | 43,033 psi | 69% | 3140 fps | 95.3% |
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 | 70gr | Nosler Varmageddon. ReloadSwiss RS 52 delivers the highest muzzle velocity at 3,458 fps; across all powders the maximum-charge window runs from 2,057 fps to 3,458 fps. Accurate 2495 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 54–90 %, leaving at least 10 % headroom. The 70.0 gr projectile in 0.243" calls for a 1:11.0 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. ReloadSwiss RS 52, Hodgdon CFE223, Alliant Power Pro 1200-R rank at the top here: for 6 mm GT with the .243 | 70gr | Nosler Varmageddon 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.