Load Specifications
Load data in caliber .22-250 Ackley Improved with .224 | 55gr | Speer TNT bullet and 74 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 ReloadSwiss RS 52.
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>> | 86% | 52,228 psi | 90% | 3455 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 50,401 psi | 87% | 3455 fps | 99.8% |
| Accurate 2495 | <<locked>> | 90% | 49,908 psi | 86% | 3451 fps | 100% |
| Accurate 2520 | <<locked>> | 86% | 50,560 psi | 87% | 3501 fps | 99.7% |
| Accurate 4064 | <<locked>> | 92% | 49,893 psi | 86% | 3488 fps | 99.9% |
| Accurate 4350ᴾ | <<locked>> | 100% | 49,429 psi | 85% | 3527 fps | 96.1% |
| ADI AR 2206H | <<locked>> | 88% | 51,300 psi | 88% | 3524 fps | 97.8% |
| ADI AR 2208 | <<locked>> | 94% | 52,344 psi | 90% | 3514 fps | 97.4% |
| ADI Benchmark 8208 | <<locked>> | 86% | 50,575 psi | 87% | 3478 fps | 98.7% |
| Alliant AR-Comp | <<locked>> | 86% | 50,386 psi | 87% | 3491 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 82% | 51,721 psi | 89% | 3606 fps | 98.3% |
| Alliant Power Pro 2000-MR | <<locked>> | 90% | 50,763 psi | 88% | 3622 fps | 96.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 94% | 51,851 psi | 89% | 3540 fps | 98.7% |
| Alliant Reloder-10x | <<locked>> | 82% | 51,793 psi | 89% | 3471 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 90% | 49,240 psi | 85% | 3494 fps | 96.9% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 48,646 psi | 84% | 3533 fps | 96.1% |
| Alliant Reloder-17 | <<locked>> | 96% | 49,414 psi | 85% | 3583 fps | 98.1% |
| Baschieri & Pellagri 107 | <<locked>> | 88% | 51,401 psi | 89% | 3524 fps | 96.8% |
| Bofors RP3 | <<locked>> | 92% | 49,110 psi | 85% | 3488 fps | 98.3% |
| Hodgdon Benchmark | <<locked>> | 84% | 49,588 psi | 86% | 3415 fps | 98.9% |
| Hodgdon BL-C2 | <<locked>> | 86% | 49,647 psi | 86% | 3497 fps | 99% |
| Hodgdon CFE223 | <<locked>> | 84% | 51,068 psi | 88% | 3599 fps | 97.2% |
| Hodgdon H322 | <<locked>> | 84% | 50,270 psi | 87% | 3488 fps | 100% |
| Hodgdon H4895 | <<locked>> | 88% | 51,808 psi | 89% | 3537 fps | 98.4% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 44,570 psi | 77% | 3392 fps | 96.8% |
| Hodgdon LEVERevolution | <<locked>> | 92% | 50,937 psi | 88% | 3563 fps | 98.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,693 psi | 60% | 2293 fps | 100% |
| Hodgdon VARGET | <<locked>> | 92% | 51,967 psi | 90% | 3520 fps | 98.4% |
| IMR 3031 | <<locked>> | 90% | 49,255 psi | 85% | 3517 fps | 100% |
| IMR 4064 | <<locked>> | 94% | 50,865 psi | 88% | 3478 fps | 97.3% |
| IMR 4198 | <<locked>> | 82% | 51,822 psi | 89% | 3438 fps | 100% |
| IMR 4895 | <<locked>> | 90% | 50,473 psi | 87% | 3537 fps | 97.7% |
| IMR 8208 XBR | <<locked>> | 86% | 50,575 psi | 87% | 3478 fps | 98.7% |
| Lovex D073.5 | <<locked>> | 82% | 50,459 psi | 87% | 3458 fps | 99.3% |
| Lovex D073.6 | <<locked>> | 88% | 50,560 psi | 87% | 3501 fps | 99.7% |
| Lovex S060 | <<locked>> | 88% | 51,300 psi | 88% | 3448 fps | 97.8% |
| Lovex S062 | <<locked>> | 92% | 51,372 psi | 89% | 3497 fps | 98.9% |
| Norma 201 | <<locked>> | 88% | 50,067 psi | 86% | 3465 fps | 98.6% |
| Norma 202 | <<locked>> | 88% | 50,372 psi | 87% | 3484 fps | 99.9% |
| Norma 203B | <<locked>> | 92% | 52,069 psi | 90% | 3553 fps | 98% |
| Norma URPᴾ | <<locked>> | 100% | 49,197 psi | 85% | 3520 fps | 96% |
| Ramshot Big Game | <<locked>> | 92% | 52,460 psi | 90% | 3570 fps | 97.9% |
| Ramshot Wild Boar | <<locked>> | 86% | 50,357 psi | 87% | 3501 fps | 97.6% |
| Ramshot X-Terminator | <<locked>> | 84% | 51,822 psi | 89% | 3471 fps | 97.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,751 psi | 60% | 2339 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 49,937 psi | 86% | 3465 fps | 99.4% |
| ReloadSwiss RS 52 | <<locked>> | 90% | 52,344 psi | 90% | 3632 fps | 97.5% |
| ReloadSwiss RS 60 | <<locked>> | 94% | 49,023 psi | 85% | 3599 fps | 99.7% |
| Rottweil R 901 | <<locked>> | 86% | 51,314 psi | 88% | 3478 fps | 99.8% |
| Rottweil R 902 | <<locked>> | 90% | 50,589 psi | 87% | 3465 fps | 98.7% |
| Rottweil R 903 | <<locked>> | 96% | 52,359 psi | 90% | 3543 fps | 98.6% |
| Shooters World Match Rifle | <<locked>> | 88% | 50,560 psi | 87% | 3501 fps | 99.7% |
| Shooters World Precision | <<locked>> | 92% | 51,372 psi | 89% | 3497 fps | 98.9% |
| SNPE Vectan SP 11 | <<locked>> | 94% | 50,633 psi | 87% | 3540 fps | 97.7% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 50,024 psi | 86% | 3481 fps | 97.6% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 52,141 psi | 90% | 3428 fps | 99.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 52,083 psi | 90% | 3419 fps | 100% |
| Somchem S321 | <<locked>> | 84% | 51,837 psi | 89% | 3514 fps | 99.1% |
| Somchem S335 | <<locked>> | 88% | 51,184 psi | 88% | 3419 fps | 100% |
| Somchem S341 | <<locked>> | 86% | 48,863 psi | 84% | 3435 fps | 97.2% |
| Somchem S355 | <<locked>> | 94% | 49,327 psi | 85% | 3474 fps | 97.9% |
| Somchem S365ᴾ | <<locked>> | 100% | 43,758 psi | 75% | 3448 fps | 98.1% |
| Vihtavuori N130 | <<locked>> | 84% | 50,821 psi | 88% | 3396 fps | 100% |
| Vihtavuori N133 | <<locked>> | 90% | 51,198 psi | 88% | 3415 fps | 100% |
| Vihtavuori N135 | <<locked>> | 90% | 49,530 psi | 85% | 3448 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 50,212 psi | 87% | 3448 fps | 99.9% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 50,633 psi | 87% | 3465 fps | 99.2% |
| Vihtavuori N160 | <<locked>> | 98% | 50,778 psi | 88% | 3501 fps | 96.3% |
| Vihtavuori N530 | <<locked>> | 84% | 50,241 psi | 87% | 3488 fps | 98.7% |
| Vihtavuori N540 | <<locked>> | 90% | 50,038 psi | 86% | 3468 fps | 99.8% |
| Vihtavuori N550 | <<locked>> | 98% | 51,300 psi | 88% | 3560 fps | 96.3% |
| Winchester 6.5 StaBALL | <<locked>> | 98% | 49,472 psi | 85% | 3435 fps | 98.2% |
| Winchester 748 | <<locked>> | 84% | 51,039 psi | 88% | 3540 fps | 99.4% |
| Winchester StaBALL Match | <<locked>> | 82% | 50,908 psi | 88% | 3510 fps | 98.3% |
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 2015 | <<locked>> | 80% | 42,859 psi | 74% | 3274 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 47,210 psi | 81% | 3389 fps | 99.5% |
| Accurate 2495 | <<locked>> | 80% | 35,505 psi | 61% | 3136 fps | 99.5% |
| Accurate 2520 | <<locked>> | 80% | 40,727 psi | 70% | 3291 fps | 98.2% |
| Accurate 4064 | <<locked>> | 80% | 33,533 psi | 58% | 3104 fps | 97.1% |
| Accurate 4350 | <<locked>> | 98% | 46,035 psi | 79% | 3451 fps | 95.2% |
| ADI AR 2206H | <<locked>> | 82% | 42,438 psi | 73% | 3323 fps | 95.6% |
| ADI AR 2208 | <<locked>> | 88% | 43,613 psi | 75% | 3323 fps | 95.1% |
| ADI Benchmark 8208 | <<locked>> | 80% | 41,785 psi | 72% | 3281 fps | 96.8% |
| Alliant AR-Comp | <<locked>> | 80% | 40,799 psi | 70% | 3307 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 48,385 psi | 83% | 3537 fps | 97.7% |
| Alliant Power Pro 2000-MR | <<locked>> | 88% | 47,587 psi | 82% | 3547 fps | 95.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 37,434 psi | 65% | 3209 fps | 95% |
| Alliant Reloder-10x | <<locked>> | 80% | 48,515 psi | 84% | 3412 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 43,279 psi | 75% | 3360 fps | 95.2% |
| Alliant Reloder-16 | <<locked>> | 98% | 45,629 psi | 79% | 3465 fps | 95.1% |
| Alliant Reloder-17 | 38.5 gr | 90% | 40,074 psi | 69% | 3353 fps | 95.2% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 44,599 psi | 77% | 3376 fps | 95% |
| Bofors RP3 | <<locked>> | 84% | 37,275 psi | 64% | 3209 fps | 95% |
| Hodgdon Benchmark | <<locked>> | 80% | 43,743 psi | 75% | 3287 fps | 97.9% |
| Hodgdon BL-C2 | <<locked>> | 80% | 40,219 psi | 69% | 3284 fps | 97% |
| Hodgdon CFE223 | <<locked>> | 80% | 44,019 psi | 76% | 3442 fps | 95.3% |
| Hodgdon H322 | <<locked>> | 80% | 43,976 psi | 76% | 3360 fps | 99.7% |
| Hodgdon H4895 | <<locked>> | 80% | 40,059 psi | 69% | 3271 fps | 95.4% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 41,727 psi | 72% | 3323 fps | 95.9% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 38,595 psi | 67% | 3278 fps | 95.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,570 psi | 44% | 2054 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 40,509 psi | 70% | 3264 fps | 95.6% |
| IMR 3031 | <<locked>> | 80% | 35,375 psi | 61% | 3196 fps | 98.8% |
| IMR 4064 | <<locked>> | 88% | 42,235 psi | 73% | 3287 fps | 95% |
| IMR 4198 | <<locked>> | 80% | 48,878 psi | 84% | 3386 fps | 100% |
| IMR 4895 | <<locked>> | 84% | 41,553 psi | 72% | 3333 fps | 95.4% |
| IMR 8208 XBR | <<locked>> | 80% | 41,785 psi | 72% | 3281 fps | 96.8% |
| Lovex D073.5 | <<locked>> | 80% | 46,905 psi | 81% | 3386 fps | 98.8% |
| Lovex D073.6 | <<locked>> | 80% | 38,377 psi | 66% | 3228 fps | 97.6% |
| Lovex S060 | <<locked>> | 80% | 40,234 psi | 69% | 3199 fps | 95% |
| Lovex S062 | <<locked>> | 82% | 37,536 psi | 65% | 3179 fps | 95.6% |
| Norma 201 | <<locked>> | 80% | 38,696 psi | 67% | 3202 fps | 95.9% |
| Norma 202 | <<locked>> | 80% | 38,827 psi | 67% | 3225 fps | 98.3% |
| Norma 203B | <<locked>> | 86% | 42,598 psi | 73% | 3343 fps | 95.7% |
| Norma URP | <<locked>> | 98% | 46,021 psi | 79% | 3451 fps | 95.1% |
| Ramshot Big Game | <<locked>> | 86% | 42,525 psi | 73% | 3353 fps | 95.4% |
| Ramshot Wild Boar | <<locked>> | 80% | 40,973 psi | 71% | 3284 fps | 95% |
| Ramshot X-Terminator | <<locked>> | 80% | 45,440 psi | 78% | 3337 fps | 96.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,730 psi | 44% | 2100 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 46,833 psi | 81% | 3399 fps | 99% |
| ReloadSwiss RS 52 | 36.3 gr | 86% | 45,643 psi | 79% | 3491 fps | 95.8% |
| ReloadSwiss RS 60 | 36 gr | 84% | 34,969 psi | 60% | 3219 fps | 95.7% |
| Rottweil R 901 | <<locked>> | 80% | 42,424 psi | 73% | 3284 fps | 98.8% |
| Rottweil R 902 | <<locked>> | 80% | 36,956 psi | 64% | 3143 fps | 95.3% |
| Rottweil R 903 | <<locked>> | 88% | 39,711 psi | 68% | 3264 fps | 95.6% |
| Shooters World Match Rifle | <<locked>> | 80% | 38,377 psi | 66% | 3228 fps | 97.6% |
| Shooters World Precision | <<locked>> | 82% | 37,536 psi | 65% | 3179 fps | 95.6% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 41,379 psi | 71% | 3330 fps | 95.1% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 41,031 psi | 71% | 3278 fps | 95.1% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 40,350 psi | 70% | 3186 fps | 98.6% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 33,228 psi | 57% | 3002 fps | 97.8% |
| Somchem S321 | <<locked>> | 80% | 44,933 psi | 77% | 3369 fps | 97.9% |
| Somchem S335 | <<locked>> | 80% | 39,798 psi | 69% | 3179 fps | 99.1% |
| Somchem S341 | <<locked>> | 82% | 42,351 psi | 73% | 3291 fps | 95.5% |
| Somchem S355 | <<locked>> | 88% | 40,640 psi | 70% | 3278 fps | 95.7% |
| Somchem S365 | <<locked>> | 94% | 35,911 psi | 62% | 3235 fps | 95.4% |
| Vihtavuori N130 | <<locked>> | 80% | 44,643 psi | 77% | 3278 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 37,782 psi | 65% | 3133 fps | 99.6% |
| Vihtavuori N135 | <<locked>> | 80% | 35,853 psi | 62% | 3150 fps | 99.5% |
| Vihtavuori N140 | <<locked>> | 80% | 36,230 psi | 62% | 3133 fps | 98% |
| Vihtavuori N150 | <<locked>> | 88% | 34,548 psi | 60% | 3091 fps | 95.1% |
| Vihtavuori N160 | <<locked>> | 96% | 47,558 psi | 82% | 3435 fps | 95.4% |
| Vihtavuori N530 | <<locked>> | 80% | 43,671 psi | 75% | 3343 fps | 97.4% |
| Vihtavuori N540 | <<locked>> | 80% | 36,056 psi | 62% | 3146 fps | 97.5% |
| Vihtavuori N550 | <<locked>> | 96% | 47,703 psi | 82% | 3484 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 40,364 psi | 70% | 3228 fps | 95.7% |
| Winchester 748 | <<locked>> | 80% | 44,034 psi | 76% | 3389 fps | 98.2% |
| Winchester StaBALL Match | <<locked>> | 80% | 47,340 psi | 82% | 3438 fps | 97.6% |
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 .22-250 Ackley Improved loaded with the .224 | 55gr | Speer TNT. ReloadSwiss RS 52 delivers the highest muzzle velocity at 3,632 fps; across all powders the maximum-charge window runs from 2,293 fps to 3,632 fps. Accurate 4350 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 (400 MPa), the top charges use 60–90 %, leaving at least 10 % headroom. The 55.0 gr projectile in 0.224" calls for a 1:12.0 twist; slower twists will usually not stabilise this weight. Accurate 4350, Alliant Reloder-16, Hodgdon Hybrid 100V 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, ReloadSwiss RS 52 rank at the top here: for .22-250 Ackley Improved with the .224 | 55gr | Speer TNT 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.