Load Specifications
Load data in caliber 6mm-284 with .243 | 85gr | Barnes XLC BT bullet and 68 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-26, Winchester StaBALL HD and Ramshot Grand.
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: 26"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 92% | 53,272 psi | 86% | 3333 fps | 99.7% |
| Accurate 4350 | <<locked>> | 84% | 53,983 psi | 87% | 3379 fps | 100% |
| Accurate MAGPRO | <<locked>> | 92% | 54,694 psi | 88% | 3474 fps | 96.4% |
| ADI AR 2209 | <<locked>> | 90% | 53,853 psi | 87% | 3415 fps | 98.3% |
| ADI AR 2213 | <<locked>> | 94% | 55,622 psi | 90% | 3478 fps | 97.7% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 50,270 psi | 81% | 3353 fps | 96.8% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 45,266 psi | 73% | 3314 fps | 98.6% |
| Alliant Reloder-16 | <<locked>> | 86% | 53,983 psi | 87% | 3435 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 82% | 55,172 psi | 89% | 3451 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 90% | 53,867 psi | 87% | 3406 fps | 98.4% |
| Alliant Reloder-22 | <<locked>> | 94% | 55,825 psi | 90% | 3481 fps | 98.8% |
| Alliant Reloder-23 | <<locked>> | 94% | 53,548 psi | 86% | 3406 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 98% | 52,794 psi | 85% | 3458 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 90% | 53,519 psi | 86% | 3491 fps | 100% |
| Bofors RP15 | <<locked>> | 96% | 54,781 psi | 88% | 3461 fps | 98.5% |
| Bofors RP30ᴾ | <<locked>> | 100% | 52,736 psi | 85% | 3445 fps | 97.7% |
| Bofors RP5 | <<locked>> | 94% | 55,825 psi | 90% | 3481 fps | 98.8% |
| Bofors RP7 | <<locked>> | 84% | 55,985 psi | 90% | 3369 fps | 99.2% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 55,259 psi | 89% | 3455 fps | 98.4% |
| Hodgdon H414 | <<locked>> | 84% | 55,100 psi | 89% | 3425 fps | 99.5% |
| Hodgdon H4350 | <<locked>> | 82% | 53,795 psi | 87% | 3369 fps | 98.5% |
| Hodgdon H4831 | <<locked>> | 92% | 55,535 psi | 89% | 3409 fps | 97% |
| Hodgdon H4831 SC | <<locked>> | 92% | 54,375 psi | 88% | 3389 fps | 96.7% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 54,491 psi | 88% | 3350 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 55,129 psi | 89% | 3589 fps | 99.5% |
| Hodgdon Superformance | <<locked>> | 84% | 55,347 psi | 89% | 3458 fps | 99.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,188 psi | 60% | 2208 fps | 100% |
| IMR 4350 | <<locked>> | 86% | 53,867 psi | 87% | 3343 fps | 99% |
| IMR 4451 Enduron | <<locked>> | 82% | 53,664 psi | 86% | 3330 fps | 99.2% |
| IMR 4831 | <<locked>> | 86% | 54,085 psi | 87% | 3363 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 90% | 53,055 psi | 85% | 3330 fps | 96.6% |
| IMR 7828 SSC | <<locked>> | 94% | 53,461 psi | 86% | 3448 fps | 97.3% |
| Lovex S065 | <<locked>> | 84% | 54,752 psi | 88% | 3340 fps | 99.9% |
| Lovex S070 | <<locked>> | 84% | 53,214 psi | 86% | 3333 fps | 99.3% |
| Lovex S071 | <<locked>> | 98% | 54,360 psi | 88% | 3353 fps | 99.8% |
| Norma 204 | <<locked>> | 86% | 54,621 psi | 88% | 3399 fps | 98.3% |
| Norma 217ᴾ | <<locked>> | 100% | 41,147 psi | 66% | 3235 fps | 96.8% |
| Norma MRP | <<locked>> | 92% | 55,753 psi | 90% | 3507 fps | 99.6% |
| Norma URP | <<locked>> | 86% | 55,593 psi | 90% | 3415 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 54,186 psi | 87% | 3471 fps | 97.8% |
| Ramshot Hunter | <<locked>> | 86% | 54,317 psi | 88% | 3409 fps | 99.8% |
| Ramshot Magnum | <<locked>> | 96% | 52,808 psi | 85% | 3399 fps | 99% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,043 psi | 61% | 2260 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 53,650 psi | 86% | 3392 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 55,027 psi | 89% | 3478 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 52,330 psi | 84% | 3510 fps | 99.7% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 51,445 psi | 83% | 3448 fps | 96% |
| Rottweil R 904 | <<locked>> | 90% | 55,405 psi | 89% | 3383 fps | 97.6% |
| Rottweil R 905 | <<locked>> | 90% | 53,316 psi | 86% | 3392 fps | 98.4% |
| Rottweil R 907 | <<locked>> | 84% | 55,985 psi | 90% | 3369 fps | 99.2% |
| Shooters World Long Rifle | <<locked>> | 84% | 54,752 psi | 88% | 3340 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 84% | 53,214 psi | 86% | 3333 fps | 99.3% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 53,867 psi | 87% | 3278 fps | 99.3% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 52,866 psi | 85% | 3389 fps | 98.3% |
| Somchem S361 | <<locked>> | 88% | 53,722 psi | 87% | 3304 fps | 96.6% |
| Somchem S365 | <<locked>> | 88% | 55,985 psi | 90% | 3419 fps | 100% |
| Somchem S385 | <<locked>> | 90% | 54,404 psi | 88% | 3369 fps | 99.1% |
| Vihtavuori N150 | <<locked>> | 82% | 54,549 psi | 88% | 3284 fps | 100% |
| Vihtavuori N160 | <<locked>> | 84% | 53,664 psi | 86% | 3340 fps | 100% |
| Vihtavuori N165 | <<locked>> | 94% | 53,461 psi | 86% | 3337 fps | 98.7% |
| Vihtavuori N550 | <<locked>> | 84% | 53,301 psi | 86% | 3353 fps | 100% |
| Vihtavuori N555 | <<locked>> | 92% | 56,173 psi | 90% | 3442 fps | 100% |
| Vihtavuori N560 | <<locked>> | 92% | 55,419 psi | 89% | 3494 fps | 97.2% |
| Vihtavuori N565 | <<locked>> | 98% | 55,956 psi | 90% | 3474 fps | 97.6% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 53,040 psi | 85% | 3287 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 55,100 psi | 89% | 3425 fps | 99.5% |
| Winchester StaBALL HD | <<locked>> | 96% | 54,404 psi | 88% | 3547 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 53,780 psi | 87% | 3353 fps | 98.3% |
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 3100 | <<locked>> | 80% | 36,187 psi | 58% | 2959 fps | 96.4% |
| Accurate 4350 | <<locked>> | 80% | 47,384 psi | 76% | 3255 fps | 99.8% |
| Accurate MAGPRO | <<locked>> | 90% | 51,068 psi | 82% | 3406 fps | 95.5% |
| ADI AR 2209 | <<locked>> | 82% | 41,742 psi | 67% | 3150 fps | 95.3% |
| ADI AR 2213 | <<locked>> | 88% | 45,629 psi | 74% | 3268 fps | 95% |
| ADI AR 2217 | <<locked>> | 98% | 47,195 psi | 76% | 3284 fps | 95.9% |
| ADI AR 2225 | <<locked>> | 94% | 37,492 psi | 60% | 3104 fps | 95.9% |
| Alliant Reloder-16 | <<locked>> | 80% | 44,440 psi | 72% | 3248 fps | 99.8% |
| Alliant Reloder-17 | <<locked>> | 80% | 51,488 psi | 83% | 3386 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 82% | 41,887 psi | 67% | 3146 fps | 95.4% |
| Alliant Reloder-22 | <<locked>> | 84% | 40,335 psi | 65% | 3150 fps | 95% |
| Alliant Reloder-23 | <<locked>> | 80% | 34,287 psi | 55% | 2989 fps | 99% |
| Alliant Reloder-25 | <<locked>> | 82% | 32,053 psi | 52% | 2936 fps | 95.3% |
| Alliant Reloder-26 | 53.4 gr | 80% | 37,507 psi | 60% | 3143 fps | 98.3% |
| Bofors RP15 | <<locked>> | 88% | 42,598 psi | 69% | 3202 fps | 95.7% |
| Bofors RP30 | <<locked>> | 94% | 43,149 psi | 70% | 3241 fps | 95.2% |
| Bofors RP5 | <<locked>> | 84% | 40,335 psi | 65% | 3150 fps | 95% |
| Bofors RP7 | <<locked>> | 80% | 49,429 psi | 80% | 3245 fps | 98.3% |
| Hodgdon H1000 | <<locked>> | 92% | 42,511 psi | 68% | 3179 fps | 95% |
| Hodgdon H414 | <<locked>> | 80% | 48,254 psi | 78% | 3291 fps | 98.5% |
| Hodgdon H4350 | <<locked>> | 80% | 50,662 psi | 82% | 3307 fps | 97.9% |
| Hodgdon H4831 | <<locked>> | 88% | 48,718 psi | 78% | 3274 fps | 95.3% |
| Hodgdon H4831 SC | <<locked>> | 88% | 47,747 psi | 77% | 3255 fps | 95% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 42,366 psi | 68% | 3120 fps | 99.9% |
| Hodgdon Retumbo | <<locked>> | 90% | 40,205 psi | 65% | 3228 fps | 95.5% |
| Hodgdon Superformance | <<locked>> | 80% | 47,877 psi | 77% | 3310 fps | 98.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,920 psi | 45% | 1982 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 44,889 psi | 72% | 3163 fps | 97.4% |
| IMR 4451 Enduron | <<locked>> | 80% | 50,589 psi | 81% | 3271 fps | 98.8% |
| IMR 4831 | <<locked>> | 80% | 44,831 psi | 72% | 3186 fps | 99.6% |
| IMR 4955 Enduron | <<locked>> | 86% | 47,108 psi | 76% | 3205 fps | 95.1% |
| IMR 7828 SSC | <<locked>> | 90% | 46,891 psi | 76% | 3310 fps | 95.6% |
| Lovex S065 | <<locked>> | 80% | 48,646 psi | 78% | 3222 fps | 99.4% |
| Lovex S070 | <<locked>> | 80% | 47,021 psi | 76% | 3209 fps | 98.4% |
| Lovex S071 | <<locked>> | 82% | 33,533 psi | 54% | 2887 fps | 95.3% |
| Norma 204 | <<locked>> | 80% | 44,933 psi | 72% | 3199 fps | 96.1% |
| Norma 217 | <<locked>> | 98% | 38,667 psi | 62% | 3166 fps | 95.8% |
| Norma MRP | <<locked>> | 80% | 37,028 psi | 60% | 3094 fps | 95.3% |
| Norma URP | <<locked>> | 80% | 45,977 psi | 74% | 3232 fps | 99.6% |
| Ramshot Grand | 56.5 gr | 88% | 43,888 psi | 71% | 3248 fps | 95% |
| Ramshot Hunter | <<locked>> | 80% | 44,846 psi | 72% | 3219 fps | 98.6% |
| Ramshot Magnum | <<locked>> | 88% | 39,682 psi | 64% | 3114 fps | 95.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,732 psi | 46% | 2034 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 47,007 psi | 76% | 3268 fps | 99.7% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 44,933 psi | 72% | 3278 fps | 99.4% |
| ReloadSwiss RS 76 | <<locked>> | 88% | 37,289 psi | 60% | 3133 fps | 95.6% |
| ReloadSwiss RS 80 | <<locked>> | 98% | 48,008 psi | 77% | 3373 fps | 95% |
| Rottweil R 904 | <<locked>> | 84% | 45,919 psi | 74% | 3189 fps | 95.3% |
| Rottweil R 905 | <<locked>> | 82% | 41,336 psi | 67% | 3133 fps | 95.4% |
| Rottweil R 907 | <<locked>> | 80% | 49,429 psi | 80% | 3245 fps | 98.3% |
| Shooters World Long Rifle | <<locked>> | 80% | 48,646 psi | 78% | 3222 fps | 99.4% |
| Shooters World SW4350 | <<locked>> | 80% | 47,021 psi | 76% | 3209 fps | 98.4% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 47,790 psi | 77% | 3159 fps | 98.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 82% | 40,973 psi | 66% | 3127 fps | 95.3% |
| Somchem S361 | <<locked>> | 86% | 50,169 psi | 81% | 3238 fps | 95.7% |
| Somchem S365 | <<locked>> | 80% | 43,178 psi | 70% | 3189 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 39,653 psi | 64% | 3054 fps | 95.8% |
| Vihtavuori N150 | <<locked>> | 80% | 51,358 psi | 83% | 3228 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 47,181 psi | 76% | 3219 fps | 99.7% |
| Vihtavuori N165 | <<locked>> | 84% | 38,957 psi | 63% | 3025 fps | 95.2% |
| Vihtavuori N550 | <<locked>> | 80% | 46,876 psi | 76% | 3225 fps | 99.6% |
| Vihtavuori N555 | <<locked>> | 80% | 38,580 psi | 62% | 3084 fps | 99% |
| Vihtavuori N560 | <<locked>> | 88% | 48,399 psi | 78% | 3353 fps | 95.5% |
| Vihtavuori N565 | <<locked>> | 92% | 45,803 psi | 74% | 3268 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 46,325 psi | 75% | 3169 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 48,544 psi | 78% | 3297 fps | 98.6% |
| Winchester StaBALL HD | 51.3 gr | 80% | 30,937 psi | 50% | 3005 fps | 99.2% |
| Winchester Supreme 780 | <<locked>> | 84% | 41,191 psi | 66% | 3087 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 74 powders for 6mm-284 loaded with the .243 | 85gr | Barnes XLC BT. Hodgdon Retumbo delivers the highest muzzle velocity at 3,589 fps; across all powders the maximum-charge window runs from 2,208 fps to 3,589 fps. ADI AR 2217 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 (428 MPa), the top charges use 60–90 %, leaving at least 10 % headroom. The 85.0 gr projectile in 0.243" calls for a 1:9.5 twist; slower twists will usually not stabilise this weight. ADI AR 2217, ADI AR 2225, Alliant Reloder-33 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, Winchester StaBALL HD, Ramshot Grand rank at the top here: for 6mm-284 with the .243 | 85gr | Barnes XLC BT they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Alliant Reloder-33, Baschieri & Pellagri 109, IMR 8133 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.