Load Specifications
Load data in caliber 6mm-284 with .243 | 100gr | Norma FMJ bullet and 71 powders. The key underlying parameters are shown in the table above.
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% | 55,608 psi | 90% | 3176 fps | 100% |
| Accurate 4350 | <<locked>> | 82% | 52,721 psi | 85% | 3146 fps | 100% |
| Accurate High Country | <<locked>> | 88% | 53,084 psi | 86% | 3264 fps | 98.7% |
| Accurate MAGPRO | <<locked>> | 90% | 54,070 psi | 87% | 3271 fps | 97.9% |
| ADI AR 2209 | <<locked>> | 88% | 53,563 psi | 86% | 3205 fps | 99.3% |
| ADI AR 2213 | <<locked>> | 92% | 55,216 psi | 89% | 3274 fps | 98.9% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 53,127 psi | 86% | 3228 fps | 99% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 47,703 psi | 77% | 3186 fps | 99.9% |
| Alliant Power Pro Varmint | <<locked>> | 88% | 53,853 psi | 87% | 3205 fps | 99.4% |
| Alliant Power Pro Varmint | <<locked>> | 88% | 53,853 psi | 87% | 3205 fps | 99.4% |
| Alliant Reloder-16 | <<locked>> | 84% | 53,461 psi | 86% | 3205 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 88% | 53,243 psi | 86% | 3196 fps | 99.3% |
| Alliant Reloder-22 | <<locked>> | 92% | 55,492 psi | 89% | 3274 fps | 99.6% |
| Alliant Reloder-23 | <<locked>> | 92% | 53,142 psi | 86% | 3182 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 96% | 52,663 psi | 85% | 3245 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 88% | 53,519 psi | 86% | 3271 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 92% | 53,287 psi | 86% | 3166 fps | 96.1% |
| Bofors RP15 | <<locked>> | 94% | 54,679 psi | 88% | 3255 fps | 99.5% |
| Bofors RP30 | <<locked>> | 98% | 52,605 psi | 85% | 3248 fps | 99% |
| Bofors RP5 | <<locked>> | 92% | 55,492 psi | 89% | 3274 fps | 99.6% |
| Bofors RP7 | <<locked>> | 82% | 54,476 psi | 88% | 3143 fps | 99.8% |
| Hodgdon H1000 | <<locked>> | 98% | 54,955 psi | 89% | 3261 fps | 99.5% |
| Hodgdon H414 | <<locked>> | 82% | 54,186 psi | 87% | 3202 fps | 99.9% |
| Hodgdon H4831 | <<locked>> | 90% | 54,911 psi | 88% | 3205 fps | 98.3% |
| Hodgdon H4831 SC | <<locked>> | 90% | 53,737 psi | 87% | 3186 fps | 98.1% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 53,896 psi | 87% | 3127 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 98% | 55,274 psi | 89% | 3389 fps | 100% |
| Hodgdon Superformance | <<locked>> | 82% | 54,694 psi | 88% | 3238 fps | 99.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,333 psi | 60% | 2057 fps | 100% |
| IMR 4350 | <<locked>> | 84% | 52,881 psi | 85% | 3130 fps | 99.7% |
| IMR 4451 Enduron | <<locked>> | 82% | 56,028 psi | 90% | 3173 fps | 100% |
| IMR 4831 | <<locked>> | 84% | 53,200 psi | 86% | 3143 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 90% | 55,680 psi | 90% | 3189 fps | 98.6% |
| IMR 7828 SSC | <<locked>> | 92% | 53,171 psi | 86% | 3251 fps | 98.7% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 43,366 psi | 70% | 3081 fps | 97% |
| Lovex S065 | <<locked>> | 82% | 53,447 psi | 86% | 3114 fps | 100% |
| Lovex S070 | <<locked>> | 84% | 54,984 psi | 89% | 3163 fps | 100% |
| Lovex S071 | <<locked>> | 96% | 53,243 psi | 86% | 3136 fps | 100% |
| Norma 204 | <<locked>> | 84% | 53,824 psi | 87% | 3189 fps | 99.3% |
| Norma 217ᴾ | <<locked>> | 100% | 43,700 psi | 70% | 3110 fps | 99% |
| Norma MRP | <<locked>> | 90% | 55,187 psi | 89% | 3291 fps | 100% |
| Norma URP | <<locked>> | 84% | 54,534 psi | 88% | 3186 fps | 100% |
| Ramshot Grand | <<locked>> | 92% | 53,780 psi | 87% | 3268 fps | 99.1% |
| Ramshot Hunter | <<locked>> | 84% | 53,577 psi | 86% | 3192 fps | 100% |
| Ramshot Magnum | <<locked>> | 94% | 52,373 psi | 84% | 3196 fps | 99.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,174 psi | 61% | 2103 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 52,736 psi | 85% | 3169 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 84% | 54,853 psi | 88% | 3258 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 96% | 52,301 psi | 84% | 3314 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 55,695 psi | 90% | 3333 fps | 98.5% |
| Rottweil R 904 | <<locked>> | 88% | 54,520 psi | 88% | 3173 fps | 98.8% |
| Rottweil R 905 | <<locked>> | 88% | 52,794 psi | 85% | 3186 fps | 99.4% |
| Rottweil R 907 | <<locked>> | 82% | 54,476 psi | 88% | 3143 fps | 99.8% |
| Shooters World Long Rifle | <<locked>> | 82% | 53,447 psi | 86% | 3114 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 54,984 psi | 89% | 3163 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 55,854 psi | 90% | 3117 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 55,912 psi | 90% | 3241 fps | 99.6% |
| Somchem S361 | <<locked>> | 88% | 56,028 psi | 90% | 3163 fps | 98.5% |
| Somchem S365 | <<locked>> | 86% | 55,593 psi | 90% | 3192 fps | 100% |
| Somchem S385 | <<locked>> | 88% | 53,301 psi | 86% | 3156 fps | 99.7% |
| Vihtavuori N160 | <<locked>> | 82% | 52,823 psi | 85% | 3120 fps | 100% |
| Vihtavuori N165 | <<locked>> | 92% | 53,055 psi | 85% | 3136 fps | 99.6% |
| Vihtavuori N550 | <<locked>> | 84% | 55,477 psi | 89% | 3179 fps | 100% |
| Vihtavuori N555 | <<locked>> | 90% | 55,216 psi | 89% | 3212 fps | 100% |
| Vihtavuori N560 | <<locked>> | 90% | 54,897 psi | 88% | 3284 fps | 98.6% |
| Vihtavuori N565 | <<locked>> | 96% | 55,143 psi | 89% | 3264 fps | 98.8% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 56,173 psi | 90% | 3330 fps | 98.1% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 56,014 psi | 90% | 3127 fps | 100% |
| Winchester 760 | <<locked>> | 82% | 54,186 psi | 87% | 3202 fps | 99.9% |
| Winchester StaBALL HD | <<locked>> | 94% | 55,477 psi | 89% | 3327 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 90% | 53,040 psi | 85% | 3146 fps | 99.3% |
Start Load - Barrel Length: 26"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 80% | 36,840 psi | 59% | 2805 fps | 98.2% |
| Accurate 4350 | <<locked>> | 80% | 49,052 psi | 79% | 3084 fps | 100% |
| Accurate High Country | <<locked>> | 80% | 40,147 psi | 65% | 2989 fps | 95.5% |
| Accurate MAGPRO | <<locked>> | 84% | 43,758 psi | 70% | 3061 fps | 95.3% |
| ADI AR 2209 | <<locked>> | 80% | 40,901 psi | 66% | 2949 fps | 96.9% |
| ADI AR 2213 | <<locked>> | 84% | 41,916 psi | 68% | 3005 fps | 95.9% |
| ADI AR 2217 | <<locked>> | 92% | 40,451 psi | 65% | 2959 fps | 95.8% |
| ADI AR 2225 | <<locked>> | 88% | 32,111 psi | 52% | 2785 fps | 95.6% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 41,191 psi | 66% | 2946 fps | 97% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 41,191 psi | 66% | 2946 fps | 97% |
| Alliant Reloder-16 | <<locked>> | 80% | 46,847 psi | 75% | 3087 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 40,814 psi | 66% | 2940 fps | 96.9% |
| Alliant Reloder-22 | <<locked>> | 80% | 36,840 psi | 59% | 2877 fps | 95.7% |
| Alliant Reloder-23 | <<locked>> | 80% | 35,549 psi | 57% | 2841 fps | 99.9% |
| Alliant Reloder-25 | <<locked>> | 80% | 30,806 psi | 50% | 2740 fps | 96.8% |
| Alliant Reloder-26 | <<locked>> | 80% | 39,247 psi | 63% | 2992 fps | 99.6% |
| Baschieri & Pellagri 109 | <<locked>> | 90% | 49,821 psi | 80% | 3097 fps | 95.1% |
| Bofors RP15 | <<locked>> | 82% | 36,579 psi | 59% | 2871 fps | 95.4% |
| Bofors RP30 | <<locked>> | 90% | 39,784 psi | 64% | 2979 fps | 96% |
| Bofors RP5 | <<locked>> | 80% | 36,840 psi | 59% | 2877 fps | 95.7% |
| Bofors RP7 | <<locked>> | 80% | 51,155 psi | 82% | 3084 fps | 99.5% |
| Hodgdon H1000 | <<locked>> | 88% | 38,682 psi | 62% | 2920 fps | 95.8% |
| Hodgdon H414 | <<locked>> | 80% | 50,604 psi | 82% | 3136 fps | 99.7% |
| Hodgdon H4831 | <<locked>> | 82% | 41,582 psi | 67% | 2940 fps | 95.1% |
| Hodgdon H4831 SC | <<locked>> | 84% | 43,947 psi | 71% | 2992 fps | 95.9% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 44,222 psi | 71% | 2959 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 84% | 34,360 psi | 55% | 2890 fps | 95.1% |
| Hodgdon Superformance | <<locked>> | 80% | 50,720 psi | 82% | 3169 fps | 99.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,920 psi | 45% | 1841 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 46,702 psi | 75% | 3012 fps | 99% |
| IMR 4451 Enduron | <<locked>> | 80% | 52,431 psi | 84% | 3110 fps | 99.8% |
| IMR 4831 | <<locked>> | 80% | 46,528 psi | 75% | 3022 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 40,611 psi | 65% | 2881 fps | 95% |
| IMR 7828 SSC | <<locked>> | 84% | 40,248 psi | 65% | 2976 fps | 95.4% |
| IMR 8133 Enduron | <<locked>> | 98% | 40,553 psi | 65% | 3015 fps | 96.1% |
| Lovex S065 | <<locked>> | 80% | 50,256 psi | 81% | 3061 fps | 100% |
| Lovex S070 | <<locked>> | 80% | 48,559 psi | 78% | 3051 fps | 99.6% |
| Lovex S071 | <<locked>> | 80% | 31,662 psi | 51% | 2671 fps | 96.4% |
| Norma 204 | <<locked>> | 80% | 46,818 psi | 75% | 3054 fps | 98.2% |
| Norma 217 | <<locked>> | 92% | 33,112 psi | 53% | 2841 fps | 95.5% |
| Norma MRP | <<locked>> | 80% | 38,696 psi | 62% | 2956 fps | 97.7% |
| Norma URP | <<locked>> | 80% | 47,979 psi | 77% | 3068 fps | 100% |
| Ramshot Grand | <<locked>> | 84% | 40,118 psi | 65% | 2986 fps | 95.8% |
| Ramshot Hunter | <<locked>> | 80% | 46,746 psi | 75% | 3064 fps | 99.7% |
| Ramshot Magnum | <<locked>> | 82% | 33,431 psi | 54% | 2779 fps | 95.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,529 psi | 46% | 1883 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 49,182 psi | 79% | 3107 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 47,485 psi | 76% | 3130 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 84% | 33,649 psi | 54% | 2864 fps | 96.3% |
| ReloadSwiss RS 80 | <<locked>> | 94% | 43,947 psi | 71% | 3104 fps | 95.7% |
| Rottweil R 904 | <<locked>> | 80% | 42,003 psi | 68% | 2923 fps | 96.1% |
| Rottweil R 905 | <<locked>> | 80% | 40,364 psi | 65% | 2927 fps | 96.9% |
| Rottweil R 907 | <<locked>> | 80% | 51,155 psi | 82% | 3084 fps | 99.5% |
| Shooters World Long Rifle | <<locked>> | 80% | 50,256 psi | 81% | 3061 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 48,559 psi | 78% | 3051 fps | 99.6% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 48,994 psi | 79% | 2999 fps | 99.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 40,030 psi | 64% | 2923 fps | 96.8% |
| Somchem S361 | <<locked>> | 80% | 43,018 psi | 69% | 2910 fps | 95.6% |
| Somchem S365 | <<locked>> | 80% | 45,281 psi | 73% | 3022 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 40,930 psi | 66% | 2907 fps | 97.8% |
| Vihtavuori N160 | <<locked>> | 80% | 49,284 psi | 79% | 3058 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 35,375 psi | 57% | 2766 fps | 95.8% |
| Vihtavuori N550 | <<locked>> | 80% | 48,733 psi | 79% | 3064 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 39,813 psi | 64% | 2923 fps | 99.9% |
| Vihtavuori N560 | <<locked>> | 82% | 41,626 psi | 67% | 3012 fps | 95.3% |
| Vihtavuori N565 | <<locked>> | 88% | 42,119 psi | 68% | 3005 fps | 95.8% |
| Vihtavuori N568 | <<locked>> | 94% | 45,121 psi | 73% | 3117 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 48,646 psi | 78% | 3012 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 50,836 psi | 82% | 3143 fps | 99.7% |
| Winchester StaBALL HD | <<locked>> | 80% | 31,792 psi | 51% | 2861 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 37,463 psi | 60% | 2825 fps | 95.8% |
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 71 powders for 6mm-284 loaded with the .243 | 100gr | Norma FMJ. Hodgdon Retumbo delivers the highest muzzle velocity at 3,389 fps; across all powders the maximum-charge window runs from 2,057 fps to 3,389 fps. ADI AR 2217 gives the best case fill at 100 %, and 71 of the 71 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 100.0 gr projectile in 0.243" calls for a 1:10.5 twist; slower twists will usually not stabilise this weight. ADI AR 2217, ADI AR 2225, Hodgdon TrailBoss 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. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.