Load Specifications
Load data in caliber .243 Ackley Improved with .243 | 69gr | SUS-TAC HPPT bullet and 67 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 60, Alliant Reloder-17 and Accurate 4350.
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 2015 | <<locked>> | 82% | 49,081 psi | 89% | 3304 fps | 100% |
| Accurate 2495 | <<locked>> | 86% | 47,616 psi | 86% | 3310 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 49,153 psi | 89% | 3369 fps | 99.8% |
| Accurate 4064 | <<locked>> | 88% | 47,616 psi | 86% | 3350 fps | 100% |
| Accurate 4350 | <<locked>> | 96% | 47,355 psi | 86% | 3399 fps | 96.6% |
| ADI AR 2206H | <<locked>> | 84% | 48,399 psi | 88% | 3376 fps | 98% |
| ADI AR 2208 | <<locked>> | 90% | 49,763 psi | 90% | 3376 fps | 97.7% |
| ADI Benchmark 8208 | <<locked>> | 82% | 47,718 psi | 86% | 3330 fps | 98.9% |
| Alliant AR-Comp | <<locked>> | 82% | 47,674 psi | 86% | 3337 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 47,674 psi | 86% | 3471 fps | 97.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 49,226 psi | 89% | 3396 fps | 98.9% |
| Alliant Reloder-15 | <<locked>> | 88% | 49,980 psi | 90% | 3422 fps | 97.9% |
| Alliant Reloder-16 | <<locked>> | 98% | 49,110 psi | 89% | 3468 fps | 97.4% |
| Alliant Reloder-17 | <<locked>> | 94% | 49,951 psi | 90% | 3514 fps | 98.9% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 48,008 psi | 87% | 3369 fps | 96.9% |
| Bofors RP3 | <<locked>> | 90% | 49,632 psi | 90% | 3412 fps | 99% |
| Hodgdon Benchmark | <<locked>> | 82% | 49,574 psi | 90% | 3327 fps | 99.4% |
| Hodgdon BL-C2 | <<locked>> | 82% | 46,775 psi | 85% | 3350 fps | 99.1% |
| Hodgdon H380 | <<locked>> | 88% | 47,500 psi | 86% | 3350 fps | 96.1% |
| Hodgdon H4895 | <<locked>> | 84% | 48,820 psi | 88% | 3389 fps | 98.6% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 48,399 psi | 88% | 3392 fps | 98.5% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 48,124 psi | 87% | 3415 fps | 98.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,853 psi | 63% | 2228 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 47,021 psi | 85% | 3333 fps | 98.2% |
| IMR 3031 | <<locked>> | 84% | 48,501 psi | 88% | 3399 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 48,921 psi | 89% | 3356 fps | 97.7% |
| IMR 4831 | <<locked>> | 98% | 48,037 psi | 87% | 3392 fps | 96.9% |
| IMR 4895 | <<locked>> | 86% | 47,892 psi | 87% | 3392 fps | 98% |
| IMR 8208 XBR | <<locked>> | 82% | 47,718 psi | 86% | 3330 fps | 98.9% |
| Lovex D073.6 | <<locked>> | 84% | 47,848 psi | 87% | 3356 fps | 99.8% |
| Lovex S060 | <<locked>> | 84% | 48,356 psi | 88% | 3304 fps | 98.1% |
| Lovex S062 | <<locked>> | 88% | 48,762 psi | 88% | 3360 fps | 99.1% |
| Norma 201 | <<locked>> | 84% | 47,239 psi | 85% | 3317 fps | 98.8% |
| Norma 202 | <<locked>> | 84% | 47,848 psi | 87% | 3340 fps | 99.9% |
| Norma 203B | <<locked>> | 88% | 49,211 psi | 89% | 3406 fps | 98.2% |
| Norma URP | <<locked>> | 98% | 49,980 psi | 90% | 3455 fps | 97.2% |
| Ramshot Big Game | <<locked>> | 88% | 49,603 psi | 90% | 3425 fps | 98.2% |
| Ramshot Wild Boar | <<locked>> | 82% | 47,297 psi | 86% | 3350 fps | 97.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,491 psi | 64% | 2283 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 86% | 49,821 psi | 90% | 3488 fps | 97.8% |
| ReloadSwiss RS 60 | <<locked>> | 92% | 49,734 psi | 90% | 3530 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 47,050 psi | 85% | 3409 fps | 96.3% |
| Rottweil R 901 | <<locked>> | 82% | 48,472 psi | 88% | 3327 fps | 99.9% |
| Rottweil R 902 | <<locked>> | 86% | 47,892 psi | 87% | 3323 fps | 98.9% |
| Rottweil R 903 | <<locked>> | 92% | 49,501 psi | 90% | 3399 fps | 98.8% |
| Shooters World Match Rifle | <<locked>> | 84% | 47,848 psi | 87% | 3356 fps | 99.8% |
| Shooters World Precision | <<locked>> | 88% | 48,762 psi | 88% | 3360 fps | 99.1% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 48,080 psi | 87% | 3402 fps | 97.9% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 49,458 psi | 90% | 3360 fps | 96.4% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 47,181 psi | 85% | 3337 fps | 97.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 48,820 psi | 88% | 3278 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 49,168 psi | 89% | 3278 fps | 100% |
| Somchem S335 | <<locked>> | 84% | 48,283 psi | 87% | 3271 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 48,950 psi | 89% | 3353 fps | 98.1% |
| Somchem S355 | <<locked>> | 92% | 49,966 psi | 90% | 3399 fps | 98.7% |
| Somchem S365ᴾ | <<locked>> | 100% | 47,790 psi | 86% | 3455 fps | 99.5% |
| Vihtavuori N133 | <<locked>> | 84% | 49,008 psi | 89% | 3274 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 47,137 psi | 85% | 3304 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 48,443 psi | 88% | 3317 fps | 100% |
| Vihtavuori N150 | <<locked>> | 92% | 48,153 psi | 87% | 3323 fps | 99.3% |
| Vihtavuori N160 | <<locked>> | 96% | 49,284 psi | 89% | 3392 fps | 96.9% |
| Vihtavuori N530 | <<locked>> | 82% | 47,834 psi | 87% | 3327 fps | 98.9% |
| Vihtavuori N540 | <<locked>> | 88% | 49,951 psi | 90% | 3356 fps | 100% |
| Vihtavuori N550 | <<locked>> | 96% | 48,544 psi | 88% | 3392 fps | 96.6% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 49,908 psi | 90% | 3369 fps | 99% |
| Winchester 748 | <<locked>> | 82% | 47,355 psi | 86% | 3373 fps | 99.4% |
| Winchester StaBALL Match | <<locked>> | 84% | 46,514 psi | 84% | 3333 fps | 98.2% |
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 2015 | <<locked>> | 80% | 46,137 psi | 83% | 3245 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 39,015 psi | 71% | 3133 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 45,847 psi | 83% | 3307 fps | 99.6% |
| Accurate 4064 | <<locked>> | 80% | 36,825 psi | 67% | 3104 fps | 98.8% |
| Accurate 4350 | 45.6 gr | 94% | 43,947 psi | 80% | 3323 fps | 95.7% |
| ADI AR 2206H | <<locked>> | 80% | 42,583 psi | 77% | 3241 fps | 96.6% |
| ADI AR 2208 | <<locked>> | 84% | 41,002 psi | 74% | 3179 fps | 95.4% |
| ADI Benchmark 8208 | <<locked>> | 80% | 44,657 psi | 81% | 3264 fps | 98.3% |
| Alliant AR-Comp | <<locked>> | 80% | 44,280 psi | 80% | 3274 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 41,582 psi | 75% | 3320 fps | 95.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 35,723 psi | 65% | 3077 fps | 95.4% |
| Alliant Reloder-15 | <<locked>> | 82% | 41,060 psi | 74% | 3222 fps | 95.6% |
| Alliant Reloder-16 | <<locked>> | 94% | 43,236 psi | 78% | 3330 fps | 95.6% |
| Alliant Reloder-17 | 43.7 gr | 86% | 37,768 psi | 68% | 3212 fps | 95.5% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 41,742 psi | 76% | 3228 fps | 95.1% |
| Bofors RP3 | <<locked>> | 80% | 35,172 psi | 64% | 3071 fps | 95.3% |
| Hodgdon Benchmark | <<locked>> | 80% | 46,412 psi | 84% | 3261 fps | 99% |
| Hodgdon BL-C2 | <<locked>> | 80% | 43,410 psi | 79% | 3274 fps | 98.6% |
| Hodgdon H380 | <<locked>> | 86% | 44,338 psi | 80% | 3281 fps | 95.2% |
| Hodgdon H4895 | <<locked>> | 80% | 42,960 psi | 78% | 3258 fps | 97.3% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 37,376 psi | 68% | 3136 fps | 95.5% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 38,870 psi | 70% | 3202 fps | 96.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,034 psi | 47% | 2001 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 41,321 psi | 75% | 3202 fps | 96.8% |
| IMR 3031 | <<locked>> | 80% | 42,264 psi | 76% | 3271 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 40,437 psi | 73% | 3163 fps | 95.5% |
| IMR 4831 | <<locked>> | 94% | 42,061 psi | 76% | 3261 fps | 95.2% |
| IMR 4895 | <<locked>> | 80% | 39,276 psi | 71% | 3189 fps | 95.7% |
| IMR 8208 XBR | <<locked>> | 80% | 44,657 psi | 81% | 3264 fps | 98.3% |
| Lovex D073.6 | <<locked>> | 80% | 41,640 psi | 75% | 3222 fps | 99% |
| Lovex S060 | <<locked>> | 80% | 42,656 psi | 77% | 3179 fps | 96.8% |
| Lovex S062 | <<locked>> | 80% | 37,666 psi | 68% | 3100 fps | 96.6% |
| Norma 201 | <<locked>> | 80% | 41,814 psi | 76% | 3196 fps | 97.8% |
| Norma 202 | <<locked>> | 80% | 42,018 psi | 76% | 3212 fps | 99.4% |
| Norma 203B | <<locked>> | 80% | 37,739 psi | 68% | 3136 fps | 95.1% |
| Norma URP | <<locked>> | 94% | 43,743 psi | 79% | 3317 fps | 95.5% |
| Ramshot Big Game | <<locked>> | 82% | 40,147 psi | 73% | 3212 fps | 95.7% |
| Ramshot Wild Boar | <<locked>> | 80% | 44,280 psi | 80% | 3281 fps | 97.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,150 psi | 47% | 2044 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 40,118 psi | 73% | 3264 fps | 95.1% |
| ReloadSwiss RS 60 | 40.7 gr | 80% | 32,895 psi | 60% | 3081 fps | 96% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 43,830 psi | 79% | 3340 fps | 95.3% |
| Rottweil R 901 | <<locked>> | 80% | 45,658 psi | 83% | 3268 fps | 99.7% |
| Rottweil R 902 | <<locked>> | 80% | 39,624 psi | 72% | 3133 fps | 97.2% |
| Rottweil R 903 | <<locked>> | 82% | 35,317 psi | 64% | 3068 fps | 95% |
| Shooters World Match Rifle | <<locked>> | 80% | 41,640 psi | 75% | 3222 fps | 99% |
| Shooters World Precision | <<locked>> | 80% | 37,666 psi | 68% | 3100 fps | 96.6% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 39,204 psi | 71% | 3196 fps | 95.5% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 46,209 psi | 84% | 3287 fps | 95.6% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 41,278 psi | 75% | 3202 fps | 96.3% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 43,105 psi | 78% | 3159 fps | 99.5% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 35,708 psi | 65% | 2989 fps | 99.1% |
| Somchem S335 | <<locked>> | 80% | 42,873 psi | 78% | 3163 fps | 99.8% |
| Somchem S341 | <<locked>> | 80% | 42,511 psi | 77% | 3215 fps | 96.6% |
| Somchem S355 | <<locked>> | 82% | 36,289 psi | 66% | 3081 fps | 95.1% |
| Somchem S365 | <<locked>> | 90% | 34,171 psi | 62% | 3110 fps | 95.8% |
| Vihtavuori N133 | <<locked>> | 80% | 43,323 psi | 78% | 3163 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 38,856 psi | 70% | 3133 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 39,740 psi | 72% | 3133 fps | 99.3% |
| Vihtavuori N150 | <<locked>> | 80% | 32,358 psi | 59% | 2946 fps | 95.3% |
| Vihtavuori N160 | <<locked>> | 92% | 42,873 psi | 78% | 3255 fps | 95.1% |
| Vihtavuori N530 | <<locked>> | 80% | 44,643 psi | 81% | 3258 fps | 98.4% |
| Vihtavuori N540 | <<locked>> | 80% | 38,203 psi | 69% | 3104 fps | 98.7% |
| Vihtavuori N550 | <<locked>> | 94% | 45,339 psi | 82% | 3323 fps | 95.7% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 37,898 psi | 69% | 3097 fps | 96% |
| Winchester 748 | <<locked>> | 80% | 44,208 psi | 80% | 3304 fps | 98.9% |
| Winchester StaBALL Match | <<locked>> | 80% | 40,582 psi | 73% | 3199 fps | 96.7% |
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 67 powders for .243 Ackley Improved loaded with the .243 | 69gr | SUS-TAC HPPT. ReloadSwiss RS 60 delivers the highest muzzle velocity at 3,530 fps; across all powders the maximum-charge window runs from 2,228 fps to 3,530 fps. Hodgdon Hybrid 100V gives the best case fill at 100 %, and 67 of the 67 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (381 MPa), the top charges use 63–90 %, leaving at least 10 % headroom. The 69.0 gr projectile in 0.243" calls for a 1:9.0 twist; slower twists will usually not stabilise this weight. Hodgdon Hybrid 100V, Hodgdon TrailBoss, ReloadSwiss RS 14 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, Alliant Reloder-17, Accurate 4350 rank at the top here: for .243 Ackley Improved with the .243 | 69gr | SUS-TAC HPPT 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.