Load Specifications
Load data in caliber .243 Ackley Improved with .243 | 80gr | Fox Classic Hunter bullet and 64 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 60, ReloadSwiss RS 70 and Alliant Reloder-17.
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: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2495 | <<locked>> | 84% | 48,921 psi | 89% | 3123 fps | 100% |
| Accurate 4064 | <<locked>> | 86% | 49,414 psi | 89% | 3176 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 49,081 psi | 89% | 3238 fps | 98.3% |
| ADI AR 2206H | <<locked>> | 82% | 49,472 psi | 90% | 3196 fps | 99.2% |
| ADI AR 2208 | <<locked>> | 86% | 47,601 psi | 86% | 3140 fps | 98.5% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 48,646 psi | 88% | 3301 fps | 98.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 47,485 psi | 86% | 3166 fps | 99.5% |
| Alliant Reloder-15 | <<locked>> | 84% | 47,776 psi | 86% | 3179 fps | 98.6% |
| Alliant Reloder-16 | <<locked>> | 94% | 47,282 psi | 86% | 3245 fps | 98.3% |
| Alliant Reloder-17 | <<locked>> | 90% | 48,022 psi | 87% | 3281 fps | 99.5% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 41,191 psi | 75% | 3120 fps | 98.3% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 46,586 psi | 84% | 3304 fps | 97.7% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 48,921 psi | 89% | 3196 fps | 98.4% |
| Bofors RP3 | <<locked>> | 86% | 47,674 psi | 86% | 3176 fps | 99.5% |
| Hodgdon H380 | <<locked>> | 86% | 48,747 psi | 88% | 3186 fps | 97.8% |
| Hodgdon H4895 | <<locked>> | 82% | 50,009 psi | 90% | 3212 fps | 99.5% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 46,789 psi | 85% | 3169 fps | 99.2% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 49,313 psi | 89% | 3238 fps | 99.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,636 psi | 64% | 2083 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 47,688 psi | 86% | 3146 fps | 99.2% |
| IMR 3031 | <<locked>> | 82% | 49,559 psi | 90% | 3202 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 46,775 psi | 85% | 3117 fps | 98.5% |
| IMR 4831 | <<locked>> | 96% | 49,647 psi | 90% | 3232 fps | 98.5% |
| IMR 4895 | <<locked>> | 84% | 48,950 psi | 89% | 3215 fps | 99.2% |
| Lovex D073.6 | <<locked>> | 82% | 49,168 psi | 89% | 3176 fps | 100% |
| Lovex S060 | <<locked>> | 82% | 49,008 psi | 89% | 3120 fps | 99.2% |
| Lovex S062 | <<locked>> | 84% | 46,804 psi | 85% | 3120 fps | 99.6% |
| Lovex S065 | <<locked>> | 92% | 49,588 psi | 90% | 3169 fps | 97.2% |
| Norma 201 | <<locked>> | 82% | 48,254 psi | 87% | 3140 fps | 99.7% |
| Norma 202 | <<locked>> | 82% | 48,660 psi | 88% | 3150 fps | 100% |
| Norma 203B | <<locked>> | 84% | 47,094 psi | 85% | 3166 fps | 98.9% |
| Norma URP | <<locked>> | 94% | 48,428 psi | 88% | 3228 fps | 98.1% |
| Ramshot Big Game | <<locked>> | 84% | 47,224 psi | 85% | 3182 fps | 98.8% |
| Ramshot Hunter | <<locked>> | 94% | 47,166 psi | 85% | 3209 fps | 96.2% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,100 psi | 65% | 2133 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 48,820 psi | 88% | 3156 fps | 96.3% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 47,572 psi | 86% | 3241 fps | 98.5% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 47,688 psi | 86% | 3287 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 48,718 psi | 88% | 3255 fps | 98% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 48,356 psi | 88% | 3274 fps | 97.6% |
| Rottweil R 902 | <<locked>> | 84% | 48,965 psi | 89% | 3143 fps | 99.7% |
| Rottweil R 903 | <<locked>> | 88% | 47,906 psi | 87% | 3169 fps | 99.4% |
| Shooters World Long Rifle | <<locked>> | 92% | 49,588 psi | 90% | 3169 fps | 97.2% |
| Shooters World Match Rifle | <<locked>> | 82% | 49,168 psi | 89% | 3176 fps | 100% |
| Shooters World Precision | <<locked>> | 84% | 46,804 psi | 85% | 3120 fps | 99.6% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 49,342 psi | 89% | 3232 fps | 99.2% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 47,805 psi | 87% | 3153 fps | 99% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 49,400 psi | 89% | 3087 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 49,835 psi | 90% | 3084 fps | 100% |
| Somchem S335 | <<locked>> | 82% | 49,110 psi | 89% | 3084 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 49,806 psi | 90% | 3176 fps | 99.2% |
| Somchem S355 | <<locked>> | 88% | 48,240 psi | 87% | 3169 fps | 99.3% |
| Somchem S365 | <<locked>> | 98% | 49,676 psi | 90% | 3294 fps | 100% |
| Vihtavuori N133 | <<locked>> | 82% | 49,734 psi | 90% | 3077 fps | 100% |
| Vihtavuori N135 | <<locked>> | 84% | 48,428 psi | 88% | 3114 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 49,327 psi | 89% | 3130 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 49,400 psi | 89% | 3150 fps | 99.9% |
| Vihtavuori N160 | <<locked>> | 92% | 47,239 psi | 85% | 3166 fps | 97.8% |
| Vihtavuori N540 | <<locked>> | 84% | 47,718 psi | 86% | 3114 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 46,746 psi | 85% | 3166 fps | 97.5% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 45,440 psi | 82% | 3209 fps | 98.2% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 47,587 psi | 86% | 3143 fps | 99.5% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 37,057 psi | 67% | 3110 fps | 98.1% |
| Winchester StaBALL Match | <<locked>> | 82% | 47,688 psi | 86% | 3163 fps | 99.3% |
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 2495 | <<locked>> | 80% | 43,033 psi | 78% | 3015 fps | 100% |
| Accurate 4064 | <<locked>> | 80% | 40,654 psi | 74% | 3002 fps | 99.9% |
| Accurate 4350 | <<locked>> | 86% | 37,072 psi | 67% | 2972 fps | 95% |
| ADI AR 2206H | <<locked>> | 80% | 46,267 psi | 84% | 3133 fps | 98.7% |
| ADI AR 2208 | <<locked>> | 80% | 39,363 psi | 71% | 2956 fps | 96.5% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 42,366 psi | 77% | 3159 fps | 97.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 39,131 psi | 71% | 2982 fps | 98% |
| Alliant Reloder-15 | <<locked>> | 80% | 41,959 psi | 76% | 3054 fps | 97.4% |
| Alliant Reloder-16 | <<locked>> | 86% | 36,738 psi | 66% | 2982 fps | 95% |
| Alliant Reloder-17 | 40 gr | 80% | 33,953 psi | 61% | 2930 fps | 95.8% |
| Alliant Reloder-23 | <<locked>> | 94% | 34,055 psi | 62% | 2927 fps | 95.7% |
| Alliant Reloder-26 | <<locked>> | 96% | 40,393 psi | 73% | 3153 fps | 95.7% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 45,745 psi | 83% | 3130 fps | 97.8% |
| Bofors RP3 | <<locked>> | 80% | 38,841 psi | 70% | 2982 fps | 98% |
| Hodgdon H380 | <<locked>> | 80% | 39,566 psi | 72% | 2982 fps | 95.3% |
| Hodgdon H4895 | <<locked>> | 80% | 46,688 psi | 84% | 3146 fps | 99.1% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 33,736 psi | 61% | 2864 fps | 95.8% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 42,917 psi | 78% | 3107 fps | 98.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,310 psi | 48% | 1860 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 44,846 psi | 81% | 3087 fps | 98.8% |
| IMR 3031 | <<locked>> | 80% | 46,456 psi | 84% | 3146 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 41,292 psi | 75% | 2995 fps | 97.3% |
| IMR 4831 | <<locked>> | 88% | 38,276 psi | 69% | 2986 fps | 95.6% |
| IMR 4895 | <<locked>> | 80% | 42,989 psi | 78% | 3091 fps | 98.2% |
| Lovex D073.6 | <<locked>> | 80% | 45,832 psi | 83% | 3114 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 46,166 psi | 84% | 3064 fps | 98.8% |
| Lovex S062 | <<locked>> | 80% | 41,365 psi | 75% | 3005 fps | 98.8% |
| Lovex S065 | <<locked>> | 88% | 43,642 psi | 79% | 3048 fps | 95.6% |
| Norma 201 | <<locked>> | 80% | 45,397 psi | 82% | 3081 fps | 99.4% |
| Norma 202 | <<locked>> | 80% | 45,701 psi | 83% | 3091 fps | 100% |
| Norma 203B | <<locked>> | 80% | 41,350 psi | 75% | 3038 fps | 97.7% |
| Norma URP | <<locked>> | 88% | 39,726 psi | 72% | 3038 fps | 95.9% |
| Ramshot Big Game | <<locked>> | 80% | 41,118 psi | 74% | 3051 fps | 97.5% |
| Ramshot Hunter | <<locked>> | 92% | 44,411 psi | 80% | 3146 fps | 95.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,789 psi | 48% | 1909 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 45,672 psi | 83% | 3091 fps | 95.4% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 44,614 psi | 81% | 3176 fps | 97.9% |
| ReloadSwiss RS 60 | 40 gr | 80% | 36,143 psi | 65% | 3012 fps | 98.9% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 39,349 psi | 71% | 3051 fps | 95.5% |
| ReloadSwiss RS 70 | 45.7 gr | 90% | 42,177 psi | 76% | 3133 fps | 95.7% |
| Rottweil R 902 | <<locked>> | 80% | 42,989 psi | 78% | 3022 fps | 99% |
| Rottweil R 903 | <<locked>> | 80% | 36,593 psi | 66% | 2917 fps | 97.1% |
| Shooters World Long Rifle | <<locked>> | 88% | 43,642 psi | 79% | 3048 fps | 95.6% |
| Shooters World Match Rifle | <<locked>> | 80% | 45,832 psi | 83% | 3114 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 41,365 psi | 75% | 3005 fps | 98.8% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 37,695 psi | 68% | 2976 fps | 96.6% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 44,991 psi | 81% | 3097 fps | 98.5% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 46,412 psi | 84% | 3031 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 38,711 psi | 70% | 2871 fps | 100% |
| Somchem S335 | <<locked>> | 80% | 46,267 psi | 84% | 3031 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 46,543 psi | 84% | 3114 fps | 98.7% |
| Somchem S355 | <<locked>> | 80% | 37,362 psi | 68% | 2927 fps | 97.1% |
| Somchem S365 | <<locked>> | 82% | 29,167 psi | 53% | 2782 fps | 95.2% |
| Vihtavuori N133 | <<locked>> | 80% | 46,746 psi | 85% | 3025 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 42,554 psi | 77% | 3005 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 43,294 psi | 78% | 3015 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 35,534 psi | 64% | 2854 fps | 97.9% |
| Vihtavuori N160 | <<locked>> | 86% | 38,812 psi | 70% | 2976 fps | 95.5% |
| Vihtavuori N540 | <<locked>> | 80% | 41,713 psi | 75% | 2995 fps | 99.9% |
| Vihtavuori N550 | <<locked>> | 86% | 38,319 psi | 69% | 2979 fps | 95.1% |
| Vihtavuori N555 | <<locked>> | 94% | 37,130 psi | 67% | 3018 fps | 95.9% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 31,546 psi | 57% | 2753 fps | 95% |
| Winchester StaBALL HD | <<locked>> | 96% | 32,358 psi | 59% | 2949 fps | 95.4% |
| Winchester StaBALL Match | <<locked>> | 80% | 44,541 psi | 81% | 3097 fps | 98.9% |
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 64 powders for .243 Ackley Improved loaded with the .243 | 80gr | Fox Classic Hunter. Alliant Reloder-26 delivers the highest muzzle velocity at 3,304 fps; across all powders the maximum-charge window runs from 2,083 fps to 3,304 fps. Alliant Reloder-23 gives the best case fill at 100 %, and 64 of the 64 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (381 MPa), the top charges use 64–90 %, 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-26, 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. ReloadSwiss RS 60, ReloadSwiss RS 70, Alliant Reloder-17 rank at the top here: for .243 Ackley Improved with the .243 | 80gr | Fox Classic Hunter 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.