Load Specifications
Load data in caliber 6mm-284 with .243 | 80gr | Barnes TTSX BT bullet and 82 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-26, Accurate High Country and Alliant Reloder-16.
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: 26"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2700 | <<locked>> | 82% | 54,882 psi | 88% | 3399 fps | 98.4% |
| Accurate 3100 | <<locked>> | 98% | 54,259 psi | 87% | 3445 fps | 99.5% |
| Accurate 4064 | <<locked>> | 82% | 54,114 psi | 87% | 3392 fps | 100% |
| Accurate 4350 | <<locked>> | 90% | 55,695 psi | 90% | 3510 fps | 100% |
| Accurate High Country | <<locked>> | 96% | 55,840 psi | 90% | 3612 fps | 97.3% |
| ADI AR 2208 | <<locked>> | 84% | 54,491 psi | 88% | 3432 fps | 100% |
| ADI AR 2209 | <<locked>> | 94% | 53,592 psi | 86% | 3497 fps | 97.6% |
| ADI AR 2213 | <<locked>> | 98% | 55,143 psi | 89% | 3556 fps | 96.8% |
| Alliant Power Pro Varmint | <<locked>> | 94% | 53,751 psi | 87% | 3494 fps | 97.7% |
| Alliant Power Pro Varmint | <<locked>> | 94% | 53,751 psi | 87% | 3494 fps | 97.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 55,172 psi | 89% | 3455 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 55,492 psi | 89% | 3484 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 90% | 53,055 psi | 85% | 3520 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 86% | 54,491 psi | 88% | 3543 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 94% | 53,055 psi | 85% | 3481 fps | 97.6% |
| Alliant Reloder-22 | <<locked>> | 98% | 54,491 psi | 88% | 3547 fps | 98% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 55,042 psi | 89% | 3533 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 47,587 psi | 77% | 3442 fps | 99.4% |
| Alliant Reloder-26 | <<locked>> | 96% | 55,811 psi | 90% | 3629 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 53,345 psi | 86% | 3524 fps | 97.7% |
| Bofors RP3 | <<locked>> | 84% | 56,115 psi | 90% | 3471 fps | 100% |
| Bofors RP5 | <<locked>> | 98% | 54,491 psi | 88% | 3547 fps | 98% |
| Bofors RP7 | <<locked>> | 88% | 55,506 psi | 89% | 3455 fps | 98.7% |
| Hodgdon H380 | <<locked>> | 82% | 52,736 psi | 85% | 3425 fps | 99.8% |
| Hodgdon H414 | <<locked>> | 88% | 54,302 psi | 87% | 3504 fps | 99% |
| Hodgdon H4350 | <<locked>> | 86% | 53,882 psi | 87% | 3461 fps | 97.9% |
| Hodgdon H4831 | <<locked>> | 96% | 55,085 psi | 89% | 3488 fps | 96.1% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 53,359 psi | 86% | 3428 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 46,673 psi | 75% | 3484 fps | 97% |
| Hodgdon Superformance | <<locked>> | 88% | 54,897 psi | 88% | 3540 fps | 98.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,245 psi | 58% | 2254 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 53,737 psi | 87% | 3412 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 82% | 56,130 psi | 90% | 3448 fps | 99.1% |
| IMR 4350 | <<locked>> | 90% | 53,417 psi | 86% | 3428 fps | 98.5% |
| IMR 4451 Enduron | <<locked>> | 86% | 53,882 psi | 87% | 3428 fps | 98.8% |
| IMR 4831 | <<locked>> | 90% | 52,750 psi | 85% | 3438 fps | 99.9% |
| IMR 7828 SSC | <<locked>> | 98% | 52,605 psi | 85% | 3517 fps | 96.3% |
| Lovex S062 | <<locked>> | 82% | 53,882 psi | 87% | 3406 fps | 100% |
| Lovex S065 | <<locked>> | 88% | 53,795 psi | 87% | 3419 fps | 99.6% |
| Lovex S070 | <<locked>> | 90% | 55,317 psi | 89% | 3468 fps | 99.2% |
| Lovex S071ᴾ | <<locked>> | 100% | 47,964 psi | 77% | 3327 fps | 98.7% |
| Norma 203B | <<locked>> | 82% | 54,795 psi | 88% | 3468 fps | 100% |
| Norma 204 | <<locked>> | 90% | 54,331 psi | 88% | 3484 fps | 97.6% |
| Norma MRP | <<locked>> | 96% | 53,998 psi | 87% | 3573 fps | 99% |
| Norma URP | <<locked>> | 90% | 54,404 psi | 88% | 3491 fps | 100% |
| Ramshot Big Game | <<locked>> | 82% | 55,840 psi | 90% | 3491 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 53,011 psi | 85% | 3533 fps | 96.8% |
| Ramshot Hunter | <<locked>> | 90% | 53,476 psi | 86% | 3488 fps | 99.4% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 51,256 psi | 83% | 3455 fps | 98.2% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,898 psi | 59% | 2306 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 52,939 psi | 85% | 3406 fps | 99.1% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 53,751 psi | 87% | 3533 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 52,272 psi | 84% | 3465 fps | 99.8% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 54,592 psi | 88% | 3566 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 47,195 psi | 76% | 3478 fps | 98.3% |
| Rottweil R 902 | <<locked>> | 82% | 55,782 psi | 90% | 3422 fps | 100% |
| Rottweil R 903 | <<locked>> | 84% | 52,605 psi | 85% | 3406 fps | 100% |
| Rottweil R 904 | <<locked>> | 94% | 55,114 psi | 89% | 3465 fps | 96.8% |
| Rottweil R 905 | <<locked>> | 96% | 55,738 psi | 90% | 3530 fps | 98.2% |
| Rottweil R 907 | <<locked>> | 88% | 55,506 psi | 89% | 3455 fps | 98.7% |
| Shooters World Long Rifle | <<locked>> | 88% | 53,795 psi | 87% | 3419 fps | 99.6% |
| Shooters World Precision | <<locked>> | 82% | 53,882 psi | 87% | 3406 fps | 100% |
| Shooters World SW4350 | <<locked>> | 90% | 55,317 psi | 89% | 3468 fps | 99.2% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 54,433 psi | 88% | 3474 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 53,534 psi | 86% | 3284 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 53,461 psi | 86% | 3360 fps | 98.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 55,259 psi | 89% | 3520 fps | 98.1% |
| Somchem S355 | <<locked>> | 84% | 52,779 psi | 85% | 3406 fps | 100% |
| Somchem S365 | <<locked>> | 92% | 54,172 psi | 87% | 3494 fps | 100% |
| Somchem S385 | <<locked>> | 94% | 52,794 psi | 85% | 3432 fps | 98.4% |
| Vihtavuori N135 | <<locked>> | 82% | 56,028 psi | 90% | 3369 fps | 100% |
| Vihtavuori N150 | <<locked>> | 86% | 53,998 psi | 87% | 3373 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 52,866 psi | 85% | 3422 fps | 99.9% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 55,999 psi | 90% | 3468 fps | 98.6% |
| Vihtavuori N540 | <<locked>> | 82% | 54,737 psi | 88% | 3376 fps | 100% |
| Vihtavuori N550 | <<locked>> | 90% | 55,738 psi | 90% | 3491 fps | 100% |
| Vihtavuori N555 | <<locked>> | 96% | 53,359 psi | 86% | 3497 fps | 100% |
| Vihtavuori N560 | <<locked>> | 96% | 54,085 psi | 87% | 3560 fps | 96.2% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 52,808 psi | 85% | 3379 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 54,578 psi | 88% | 3507 fps | 99% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 51,416 psi | 83% | 3602 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 52,924 psi | 85% | 3422 fps | 97.5% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 26"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2700 | <<locked>> | 80% | 51,445 psi | 83% | 3337 fps | 97.9% |
| Accurate 3100 | <<locked>> | 86% | 35,302 psi | 57% | 3031 fps | 95.2% |
| Accurate 4064 | <<locked>> | 80% | 50,618 psi | 82% | 3333 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 38,827 psi | 63% | 3159 fps | 98% |
| Accurate High Country | 58.5 gr | 92% | 48,327 psi | 78% | 3458 fps | 95.4% |
| ADI AR 2208 | <<locked>> | 80% | 47,819 psi | 77% | 3304 fps | 99.8% |
| ADI AR 2209 | <<locked>> | 90% | 46,514 psi | 75% | 3350 fps | 95.9% |
| ADI AR 2213 | <<locked>> | 96% | 51,213 psi | 83% | 3474 fps | 95.8% |
| Alliant Power Pro Varmint | <<locked>> | 88% | 43,685 psi | 70% | 3278 fps | 95.1% |
| Alliant Power Pro Varmint | <<locked>> | 88% | 43,685 psi | 70% | 3278 fps | 95.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 48,385 psi | 78% | 3330 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 51,721 psi | 83% | 3415 fps | 100% |
| Alliant Reloder-16 | 47.5 gr | 80% | 37,869 psi | 61% | 3179 fps | 98.1% |
| Alliant Reloder-17 | <<locked>> | 80% | 43,424 psi | 70% | 3330 fps | 99.9% |
| Alliant Reloder-19 | <<locked>> | 88% | 43,207 psi | 70% | 3268 fps | 95% |
| Alliant Reloder-22 | <<locked>> | 92% | 44,077 psi | 71% | 3330 fps | 95.5% |
| Alliant Reloder-23 | <<locked>> | 80% | 27,601 psi | 44% | 2861 fps | 95.3% |
| Alliant Reloder-25 | <<locked>> | 90% | 33,823 psi | 54% | 3077 fps | 95.1% |
| Alliant Reloder-26 | 53.7 gr | 82% | 32,155 psi | 52% | 3064 fps | 95.1% |
| Bofors RP15 | <<locked>> | 94% | 43,178 psi | 70% | 3304 fps | 95% |
| Bofors RP3 | <<locked>> | 80% | 49,052 psi | 79% | 3346 fps | 100% |
| Bofors RP5 | <<locked>> | 92% | 44,077 psi | 71% | 3330 fps | 95.5% |
| Bofors RP7 | <<locked>> | 80% | 42,685 psi | 69% | 3186 fps | 95.9% |
| Hodgdon H380 | <<locked>> | 80% | 49,327 psi | 79% | 3360 fps | 99.5% |
| Hodgdon H414 | <<locked>> | 80% | 41,089 psi | 66% | 3219 fps | 96.1% |
| Hodgdon H4350 | <<locked>> | 80% | 44,034 psi | 71% | 3251 fps | 95.5% |
| Hodgdon H4831 | <<locked>> | 94% | 51,387 psi | 83% | 3415 fps | 95.2% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 35,215 psi | 57% | 3041 fps | 98.5% |
| Hodgdon Retumbo | <<locked>> | 98% | 43,366 psi | 70% | 3399 fps | 95.8% |
| Hodgdon Superformance | <<locked>> | 80% | 40,263 psi | 65% | 3225 fps | 95.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,006 psi | 44% | 2024 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 50,285 psi | 81% | 3346 fps | 99.9% |
| IMR 4166 Enduron | <<locked>> | 80% | 52,649 psi | 85% | 3383 fps | 98.7% |
| IMR 4350 | <<locked>> | 82% | 41,162 psi | 66% | 3163 fps | 95.5% |
| IMR 4451 Enduron | <<locked>> | 80% | 44,440 psi | 72% | 3228 fps | 96.9% |
| IMR 4831 | <<locked>> | 80% | 37,318 psi | 60% | 3104 fps | 97.7% |
| IMR 7828 SSC | <<locked>> | 96% | 48,776 psi | 79% | 3438 fps | 95.2% |
| Lovex S062 | <<locked>> | 80% | 50,444 psi | 81% | 3343 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 41,713 psi | 67% | 3166 fps | 97.6% |
| Lovex S070 | <<locked>> | 80% | 39,885 psi | 64% | 3133 fps | 95.9% |
| Lovex S071 | <<locked>> | 92% | 36,579 psi | 59% | 3064 fps | 95.7% |
| Norma 203B | <<locked>> | 80% | 51,053 psi | 82% | 3399 fps | 100% |
| Norma 204 | <<locked>> | 86% | 47,224 psi | 76% | 3340 fps | 95.9% |
| Norma MRP | <<locked>> | 88% | 40,118 psi | 65% | 3268 fps | 95.7% |
| Norma URP | <<locked>> | 80% | 38,696 psi | 62% | 3156 fps | 97.8% |
| Ramshot Big Game | <<locked>> | 80% | 52,011 psi | 84% | 3425 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 49,023 psi | 79% | 3448 fps | 95.7% |
| Ramshot Hunter | <<locked>> | 80% | 37,652 psi | 61% | 3133 fps | 95.8% |
| Ramshot Magnum | <<locked>> | 94% | 40,480 psi | 65% | 3215 fps | 95.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,427 psi | 44% | 2070 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 49,371 psi | 80% | 3337 fps | 98.6% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 46,180 psi | 74% | 3396 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 39,044 psi | 63% | 3182 fps | 97.8% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 37,753 psi | 61% | 3186 fps | 97.1% |
| ReloadSwiss RS 76 | <<locked>> | 96% | 40,408 psi | 65% | 3301 fps | 96% |
| Rottweil R 902 | <<locked>> | 80% | 52,243 psi | 84% | 3360 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 45,948 psi | 74% | 3281 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 48,269 psi | 78% | 3330 fps | 95.1% |
| Rottweil R 905 | <<locked>> | 90% | 45,324 psi | 73% | 3317 fps | 95.8% |
| Rottweil R 907 | <<locked>> | 80% | 42,685 psi | 69% | 3186 fps | 95.9% |
| Shooters World Long Rifle | <<locked>> | 80% | 41,713 psi | 67% | 3166 fps | 97.6% |
| Shooters World Precision | <<locked>> | 80% | 50,444 psi | 81% | 3343 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 39,885 psi | 64% | 3133 fps | 95.9% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 47,442 psi | 76% | 3343 fps | 99.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 47,123 psi | 76% | 3176 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 40,727 psi | 66% | 3091 fps | 96.1% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 44,918 psi | 72% | 3310 fps | 95.7% |
| Somchem S355 | <<locked>> | 80% | 46,267 psi | 75% | 3281 fps | 99.9% |
| Somchem S365 | <<locked>> | 80% | 35,259 psi | 57% | 3100 fps | 99.5% |
| Somchem S385 | <<locked>> | 86% | 40,161 psi | 65% | 3156 fps | 95.1% |
| Vihtavuori N135 | <<locked>> | 80% | 52,663 psi | 85% | 3317 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 44,193 psi | 71% | 3196 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 40,074 psi | 65% | 3156 fps | 98.2% |
| Vihtavuori N165 | <<locked>> | 92% | 42,380 psi | 68% | 3196 fps | 95.5% |
| Vihtavuori N540 | <<locked>> | 80% | 51,358 psi | 83% | 3320 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 39,668 psi | 64% | 3156 fps | 97.9% |
| Vihtavuori N555 | <<locked>> | 80% | 30,603 psi | 49% | 2956 fps | 95.6% |
| Vihtavuori N560 | <<locked>> | 94% | 50,517 psi | 81% | 3488 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 39,436 psi | 64% | 3117 fps | 99.6% |
| Winchester 760 | <<locked>> | 80% | 41,292 psi | 67% | 3225 fps | 96.1% |
| Winchester StaBALL HD | <<locked>> | 82% | 26,136 psi | 42% | 2884 fps | 95% |
| Winchester Supreme 780 | <<locked>> | 92% | 45,716 psi | 74% | 3278 fps | 95.8% |
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 82 powders for 6mm-284 loaded with the .243 | 80gr | Barnes TTSX BT. Alliant Reloder-26 delivers the highest muzzle velocity at 3,629 fps; across all powders the maximum-charge window runs from 2,254 fps to 3,629 fps. Alliant Reloder-23 gives the best case fill at 100 %, and 82 of the 82 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (428 MPa), the top charges use 58–90 %, leaving at least 10 % headroom. The 80.0 gr projectile in 0.243" calls for a 1:9.0 twist; slower twists will usually not stabilise this weight. Alliant Reloder-23, Alliant Reloder-25, Bofors RP15 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 Reloder-26, Accurate High Country, Alliant Reloder-16 rank at the top here: for 6mm-284 with the .243 | 80gr | Barnes TTSX BT 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.