Load Specifications
Load data in caliber .22-250 Ackley Improved with .224 | 55gr | Sierra SP Blitz 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>> | 84% | 49,850 psi | 86% | 3419 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 51,648 psi | 89% | 3484 fps | 99.9% |
| Accurate 2495 | <<locked>> | 90% | 51,721 psi | 89% | 3484 fps | 100% |
| Accurate 2520 | <<locked>> | 84% | 50,241 psi | 87% | 3488 fps | 99.7% |
| Accurate 4064 | <<locked>> | 92% | 51,619 psi | 89% | 3524 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 51,387 psi | 89% | 3570 fps | 96.8% |
| ADI AR 2206H | <<locked>> | 86% | 49,342 psi | 85% | 3488 fps | 97.6% |
| ADI AR 2208 | <<locked>> | 92% | 50,560 psi | 87% | 3484 fps | 97.2% |
| ADI Benchmark 8208 | <<locked>> | 86% | 51,735 psi | 89% | 3507 fps | 99% |
| Alliant AR-Comp | <<locked>> | 86% | 51,459 psi | 89% | 3507 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 90% | 52,127 psi | 90% | 3658 fps | 97.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 92% | 50,125 psi | 86% | 3510 fps | 98.5% |
| Alliant Reloder-15 | <<locked>> | 90% | 50,778 psi | 88% | 3530 fps | 97.4% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 49,893 psi | 86% | 3573 fps | 96.7% |
| Alliant Reloder-17 | <<locked>> | 96% | 50,662 psi | 87% | 3615 fps | 98.5% |
| Baschieri & Pellagri 107 | <<locked>> | 88% | 52,446 psi | 90% | 3550 fps | 97.2% |
| Bofors RP3 | <<locked>> | 92% | 50,314 psi | 87% | 3517 fps | 98.6% |
| Hodgdon Benchmark | <<locked>> | 84% | 50,343 psi | 87% | 3438 fps | 99.1% |
| Hodgdon BL-C2 | <<locked>> | 86% | 50,778 psi | 88% | 3524 fps | 99.2% |
| Hodgdon CFE223 | <<locked>> | 84% | 52,272 psi | 90% | 3632 fps | 97.7% |
| Hodgdon H322 | <<locked>> | 82% | 52,069 psi | 90% | 3527 fps | 100% |
| Hodgdon H380 | <<locked>> | 92% | 51,532 psi | 89% | 3520 fps | 96.2% |
| Hodgdon H4895 | <<locked>> | 86% | 49,763 psi | 86% | 3504 fps | 98.1% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 45,876 psi | 79% | 3428 fps | 97.3% |
| Hodgdon LEVERevolution | <<locked>> | 88% | 48,820 psi | 84% | 3527 fps | 98.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,766 psi | 60% | 2303 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 51,053 psi | 88% | 3510 fps | 98.3% |
| IMR 3031 | <<locked>> | 88% | 52,417 psi | 90% | 3576 fps | 100% |
| IMR 4064 | <<locked>> | 90% | 50,009 psi | 86% | 3468 fps | 97.3% |
| IMR 4831ᴾ | <<locked>> | 100% | 48,631 psi | 84% | 3491 fps | 96.3% |
| IMR 4895 | <<locked>> | 90% | 52,054 psi | 90% | 3573 fps | 98.2% |
| IMR 8208 XBR | <<locked>> | 86% | 51,735 psi | 89% | 3507 fps | 99% |
| Lovex D073.5 | <<locked>> | 82% | 51,663 psi | 89% | 3488 fps | 99.5% |
| Lovex D073.6 | <<locked>> | 88% | 52,156 psi | 90% | 3533 fps | 99.8% |
| Lovex S060 | <<locked>> | 88% | 52,402 psi | 90% | 3478 fps | 98.2% |
| Lovex S062 | <<locked>> | 90% | 49,719 psi | 86% | 3471 fps | 98.8% |
| Norma 201 | <<locked>> | 88% | 51,271 psi | 88% | 3494 fps | 98.9% |
| Norma 202 | <<locked>> | 88% | 51,634 psi | 89% | 3510 fps | 99.9% |
| Norma 203B | <<locked>> | 90% | 49,966 psi | 86% | 3514 fps | 97.7% |
| Norma URPᴾ | <<locked>> | 100% | 50,575 psi | 87% | 3556 fps | 96.5% |
| Ramshot Big Game | <<locked>> | 90% | 50,183 psi | 87% | 3527 fps | 97.6% |
| Ramshot Wild Boar | <<locked>> | 86% | 51,822 psi | 89% | 3533 fps | 98% |
| Ramshot X-Terminator | <<locked>> | 82% | 49,429 psi | 85% | 3428 fps | 97.4% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,838 psi | 60% | 2349 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 51,140 psi | 88% | 3494 fps | 99.6% |
| ReloadSwiss RS 52 | <<locked>> | 88% | 50,212 psi | 87% | 3593 fps | 97.1% |
| ReloadSwiss RS 60 | <<locked>> | 94% | 50,705 psi | 87% | 3638 fps | 99.9% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 50,879 psi | 88% | 3576 fps | 96.4% |
| Rottweil R 901 | <<locked>> | 86% | 52,257 psi | 90% | 3501 fps | 99.9% |
| Rottweil R 902 | <<locked>> | 90% | 51,750 psi | 89% | 3494 fps | 99% |
| Rottweil R 903 | <<locked>> | 94% | 50,154 psi | 86% | 3504 fps | 98.4% |
| Shooters World Match Rifle | <<locked>> | 88% | 52,156 psi | 90% | 3533 fps | 99.8% |
| Shooters World Precision | <<locked>> | 90% | 49,719 psi | 86% | 3471 fps | 98.8% |
| SNPE Vectan SP 11 | <<locked>> | 94% | 52,054 psi | 90% | 3573 fps | 98.1% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 51,039 psi | 88% | 3507 fps | 97.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 50,067 psi | 86% | 3399 fps | 99.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 92% | 49,850 psi | 86% | 3383 fps | 100% |
| Somchem S321 | <<locked>> | 82% | 49,356 psi | 85% | 3468 fps | 98.8% |
| Somchem S335 | <<locked>> | 88% | 52,330 psi | 90% | 3445 fps | 100% |
| Somchem S341 | <<locked>> | 86% | 49,893 psi | 86% | 3461 fps | 97.6% |
| Somchem S355 | <<locked>> | 94% | 50,879 psi | 88% | 3510 fps | 98.3% |
| Somchem S365ᴾ | <<locked>> | 100% | 45,063 psi | 78% | 3484 fps | 98.5% |
| Vihtavuori N130 | <<locked>> | 82% | 49,719 psi | 86% | 3376 fps | 100% |
| Vihtavuori N133 | <<locked>> | 86% | 50,154 psi | 86% | 3392 fps | 100% |
| Vihtavuori N135 | <<locked>> | 90% | 50,908 psi | 88% | 3474 fps | 100% |
| Vihtavuori N140 | <<locked>> | 88% | 48,950 psi | 84% | 3422 fps | 99.9% |
| Vihtavuori N150 | <<locked>> | 96% | 52,156 psi | 90% | 3491 fps | 99.4% |
| Vihtavuori N160 | <<locked>> | 98% | 49,690 psi | 86% | 3491 fps | 96.2% |
| Vihtavuori N530 | <<locked>> | 86% | 52,243 psi | 90% | 3507 fps | 99.1% |
| Vihtavuori N540 | <<locked>> | 90% | 50,850 psi | 88% | 3471 fps | 99.9% |
| Vihtavuori N550 | <<locked>> | 98% | 49,052 psi | 85% | 3491 fps | 95.9% |
| Winchester 6.5 StaBALL | <<locked>> | 98% | 50,865 psi | 88% | 3471 fps | 98.6% |
| Winchester 748 | <<locked>> | 86% | 51,866 psi | 89% | 3560 fps | 99.5% |
| Winchester StaBALL Match | <<locked>> | 88% | 50,792 psi | 88% | 3517 fps | 98.4% |
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% | 43,859 psi | 76% | 3297 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 48,457 psi | 84% | 3422 fps | 99.7% |
| Accurate 2495 | <<locked>> | 80% | 36,753 psi | 63% | 3173 fps | 99.7% |
| Accurate 2520 | <<locked>> | 80% | 43,453 psi | 75% | 3346 fps | 98.8% |
| Accurate 4064 | <<locked>> | 80% | 34,708 psi | 60% | 3140 fps | 97.6% |
| Accurate 4350 | <<locked>> | 98% | 47,529 psi | 82% | 3491 fps | 95.8% |
| ADI AR 2206H | <<locked>> | 80% | 40,567 psi | 70% | 3281 fps | 95.1% |
| ADI AR 2208 | <<locked>> | 88% | 44,672 psi | 77% | 3353 fps | 95.6% |
| ADI Benchmark 8208 | <<locked>> | 80% | 42,612 psi | 73% | 3310 fps | 97.2% |
| Alliant AR-Comp | <<locked>> | 80% | 41,916 psi | 72% | 3330 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 45,223 psi | 78% | 3497 fps | 95.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 38,566 psi | 67% | 3241 fps | 95.6% |
| Alliant Reloder-15 | <<locked>> | 86% | 44,411 psi | 77% | 3389 fps | 95.7% |
| Alliant Reloder-16 | <<locked>> | 98% | 46,485 psi | 80% | 3491 fps | 95.7% |
| Alliant Reloder-17 | 39.4 gr | 90% | 41,220 psi | 71% | 3389 fps | 95.9% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 45,614 psi | 79% | 3406 fps | 95.5% |
| Bofors RP3 | <<locked>> | 84% | 38,348 psi | 66% | 3241 fps | 95.6% |
| Hodgdon Benchmark | <<locked>> | 80% | 44,541 psi | 77% | 3314 fps | 98.2% |
| Hodgdon BL-C2 | <<locked>> | 80% | 41,321 psi | 71% | 3317 fps | 97.4% |
| Hodgdon CFE223 | <<locked>> | 80% | 45,237 psi | 78% | 3478 fps | 95.9% |
| Hodgdon H322 | <<locked>> | 80% | 48,762 psi | 84% | 3465 fps | 100% |
| Hodgdon H380 | <<locked>> | 90% | 48,356 psi | 83% | 3455 fps | 95.4% |
| Hodgdon H4895 | <<locked>> | 80% | 40,886 psi | 71% | 3297 fps | 95.9% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 40,321 psi | 70% | 3294 fps | 95.6% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 36,927 psi | 64% | 3235 fps | 95% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,817 psi | 45% | 2070 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 39,349 psi | 68% | 3238 fps | 95.3% |
| IMR 3031 | <<locked>> | 80% | 40,030 psi | 69% | 3320 fps | 99.7% |
| IMR 4064 | <<locked>> | 86% | 44,034 psi | 76% | 3337 fps | 95.7% |
| IMR 4831 | <<locked>> | 98% | 45,208 psi | 78% | 3415 fps | 95.3% |
| IMR 4895 | <<locked>> | 84% | 42,685 psi | 74% | 3366 fps | 95.9% |
| IMR 8208 XBR | <<locked>> | 80% | 42,612 psi | 73% | 3310 fps | 97.2% |
| Lovex D073.5 | <<locked>> | 80% | 48,109 psi | 83% | 3415 fps | 99% |
| Lovex D073.6 | <<locked>> | 80% | 39,247 psi | 68% | 3255 fps | 97.9% |
| Lovex S060 | <<locked>> | 80% | 41,017 psi | 71% | 3222 fps | 95.4% |
| Lovex S062 | <<locked>> | 80% | 35,926 psi | 62% | 3140 fps | 95.1% |
| Norma 201 | <<locked>> | 80% | 39,842 psi | 69% | 3238 fps | 96.5% |
| Norma 202 | <<locked>> | 80% | 40,030 psi | 69% | 3261 fps | 98.7% |
| Norma 203B | <<locked>> | 84% | 41,031 psi | 71% | 3307 fps | 95.3% |
| Norma URP | <<locked>> | 98% | 47,384 psi | 82% | 3488 fps | 95.7% |
| Ramshot Big Game | <<locked>> | 84% | 40,843 psi | 70% | 3317 fps | 95% |
| Ramshot Wild Boar | <<locked>> | 80% | 42,032 psi | 72% | 3317 fps | 95.6% |
| Ramshot X-Terminator | <<locked>> | 80% | 46,485 psi | 80% | 3366 fps | 96.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,976 psi | 45% | 2116 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 48,095 psi | 83% | 3432 fps | 99.3% |
| ReloadSwiss RS 52 | 36.2 gr | 84% | 43,540 psi | 75% | 3445 fps | 95.4% |
| ReloadSwiss RS 60 | 35.9 gr | 82% | 33,388 psi | 58% | 3173 fps | 95.1% |
| ReloadSwiss RS 62 | <<locked>> | 98% | 47,616 psi | 82% | 3510 fps | 95.6% |
| Rottweil R 901 | <<locked>> | 80% | 43,395 psi | 75% | 3314 fps | 99% |
| Rottweil R 902 | <<locked>> | 80% | 37,753 psi | 65% | 3169 fps | 95.7% |
| Rottweil R 903 | <<locked>> | 86% | 38,232 psi | 66% | 3232 fps | 95.2% |
| Shooters World Match Rifle | <<locked>> | 80% | 39,247 psi | 68% | 3255 fps | 97.9% |
| Shooters World Precision | <<locked>> | 80% | 35,926 psi | 62% | 3140 fps | 95.1% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 42,351 psi | 73% | 3360 fps | 95.6% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 42,105 psi | 73% | 3310 fps | 95.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 41,220 psi | 71% | 3212 fps | 98.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 34,026 psi | 59% | 3028 fps | 98.1% |
| Somchem S321 | <<locked>> | 80% | 46,050 psi | 79% | 3399 fps | 98.3% |
| Somchem S335 | <<locked>> | 80% | 40,930 psi | 71% | 3209 fps | 99.3% |
| Somchem S341 | <<locked>> | 80% | 40,393 psi | 70% | 3248 fps | 95% |
| Somchem S355 | <<locked>> | 86% | 39,175 psi | 68% | 3245 fps | 95.3% |
| Somchem S365 | <<locked>> | 94% | 36,796 psi | 63% | 3268 fps | 96% |
| Vihtavuori N130 | <<locked>> | 80% | 46,673 psi | 80% | 3320 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 41,408 psi | 71% | 3219 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 36,811 psi | 63% | 3179 fps | 99.7% |
| Vihtavuori N140 | <<locked>> | 80% | 37,608 psi | 65% | 3173 fps | 98.5% |
| Vihtavuori N150 | <<locked>> | 84% | 35,085 psi | 61% | 3104 fps | 95.5% |
| Vihtavuori N160 | <<locked>> | 96% | 46,586 psi | 80% | 3422 fps | 95.3% |
| Vihtavuori N530 | <<locked>> | 80% | 42,743 psi | 74% | 3307 fps | 97.3% |
| Vihtavuori N540 | <<locked>> | 80% | 36,361 psi | 63% | 3146 fps | 97.7% |
| Vihtavuori N550 | <<locked>> | 96% | 46,021 psi | 79% | 3422 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 38,595 psi | 67% | 3189 fps | 95.2% |
| Winchester 748 | <<locked>> | 80% | 42,061 psi | 73% | 3346 fps | 97.9% |
| Winchester StaBALL Match | <<locked>> | 80% | 38,508 psi | 66% | 3232 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 .22-250 Ackley Improved loaded with the .224 | 55gr | Sierra SP Blitz. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 3,658 fps; across all powders the maximum-charge window runs from 2,303 fps to 3,658 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 | Sierra SP Blitz 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.