Load Specifications
Load data in caliber .22-250 Ackley Improved with .224 | 55gr | Speer SP w/C bullet and 75 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% | 52,373 psi | 90% | 3458 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 50,575 psi | 87% | 3458 fps | 99.8% |
| Accurate 2495 | <<locked>> | 90% | 50,111 psi | 86% | 3458 fps | 100% |
| Accurate 2520 | <<locked>> | 86% | 50,734 psi | 87% | 3504 fps | 99.7% |
| Accurate 4064 | <<locked>> | 92% | 50,067 psi | 86% | 3494 fps | 99.9% |
| Accurate 4350ᴾ | <<locked>> | 100% | 49,588 psi | 86% | 3530 fps | 96.2% |
| ADI AR 2206H | <<locked>> | 88% | 51,474 psi | 89% | 3527 fps | 97.8% |
| ADI AR 2208 | <<locked>> | 92% | 49,647 psi | 86% | 3461 fps | 96.8% |
| ADI Benchmark 8208 | <<locked>> | 86% | 50,734 psi | 87% | 3481 fps | 98.7% |
| Alliant AR-Comp | <<locked>> | 86% | 50,604 psi | 87% | 3494 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 82% | 51,924 psi | 90% | 3609 fps | 98.4% |
| Alliant Power Pro 2000-MR | <<locked>> | 90% | 50,894 psi | 88% | 3625 fps | 96.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 94% | 52,011 psi | 90% | 3543 fps | 98.7% |
| Alliant Reloder-10x | <<locked>> | 82% | 51,953 psi | 90% | 3474 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 90% | 49,400 psi | 85% | 3497 fps | 96.9% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 48,747 psi | 84% | 3540 fps | 96.2% |
| Alliant Reloder-17 | <<locked>> | 96% | 49,516 psi | 85% | 3589 fps | 98.1% |
| Baschieri & Pellagri 107 | <<locked>> | 88% | 51,605 psi | 89% | 3530 fps | 96.9% |
| Bofors RP3 | <<locked>> | 92% | 49,269 psi | 85% | 3494 fps | 98.4% |
| Hodgdon Benchmark | <<locked>> | 84% | 49,690 psi | 86% | 3419 fps | 99% |
| Hodgdon BL-C2 | <<locked>> | 86% | 49,792 psi | 86% | 3504 fps | 99% |
| Hodgdon CFE223 | <<locked>> | 84% | 51,256 psi | 88% | 3606 fps | 97.3% |
| Hodgdon H322 | <<locked>> | 84% | 50,473 psi | 87% | 3494 fps | 100% |
| Hodgdon H4895 | <<locked>> | 88% | 51,967 psi | 90% | 3543 fps | 98.4% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 44,730 psi | 77% | 3396 fps | 96.9% |
| Hodgdon LEVERevolution | <<locked>> | 92% | 51,097 psi | 88% | 3566 fps | 98.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,577 psi | 60% | 2290 fps | 100% |
| Hodgdon VARGET | <<locked>> | 92% | 52,127 psi | 90% | 3524 fps | 98.4% |
| IMR 3031 | <<locked>> | 90% | 49,429 psi | 85% | 3517 fps | 100% |
| IMR 4064 | <<locked>> | 94% | 51,024 psi | 88% | 3484 fps | 97.4% |
| IMR 4198 | <<locked>> | 82% | 51,996 psi | 90% | 3442 fps | 100% |
| IMR 4895 | <<locked>> | 90% | 50,633 psi | 87% | 3540 fps | 97.8% |
| IMR 8208 XBR | <<locked>> | 86% | 50,734 psi | 87% | 3481 fps | 98.7% |
| Lovex D073.5 | <<locked>> | 82% | 50,633 psi | 87% | 3461 fps | 99.3% |
| Lovex D073.6 | <<locked>> | 88% | 50,734 psi | 87% | 3504 fps | 99.7% |
| Lovex S060 | <<locked>> | 88% | 51,459 psi | 89% | 3451 fps | 97.9% |
| Lovex S062 | <<locked>> | 92% | 51,488 psi | 89% | 3504 fps | 98.9% |
| Norma 201 | <<locked>> | 88% | 50,183 psi | 87% | 3471 fps | 98.7% |
| Norma 202 | <<locked>> | 88% | 50,560 psi | 87% | 3484 fps | 99.9% |
| Norma 203B | <<locked>> | 92% | 52,214 psi | 90% | 3556 fps | 98.1% |
| Norma URPᴾ | <<locked>> | 100% | 49,313 psi | 85% | 3524 fps | 96% |
| Ramshot Big Game | <<locked>> | 90% | 48,878 psi | 84% | 3501 fps | 97.2% |
| Ramshot Wild Boar | <<locked>> | 86% | 50,502 psi | 87% | 3501 fps | 97.6% |
| Ramshot X-Terminator | <<locked>> | 84% | 51,967 psi | 90% | 3474 fps | 97.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,983 psi | 60% | 2346 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 50,111 psi | 86% | 3471 fps | 99.4% |
| ReloadSwiss RS 52 | <<locked>> | 88% | 49,066 psi | 85% | 3566 fps | 96.8% |
| ReloadSwiss RS 60 | <<locked>> | 94% | 49,530 psi | 85% | 3609 fps | 99.7% |
| Rottweil R 901 | <<locked>> | 86% | 51,140 psi | 88% | 3474 fps | 99.8% |
| Rottweil R 902 | <<locked>> | 90% | 50,749 psi | 88% | 3468 fps | 98.8% |
| Rottweil R 903 | <<locked>> | 94% | 49,124 psi | 85% | 3481 fps | 98.1% |
| Shooters World Match Rifle | <<locked>> | 88% | 50,734 psi | 87% | 3504 fps | 99.7% |
| Shooters World Precision | <<locked>> | 92% | 51,488 psi | 89% | 3504 fps | 98.9% |
| SNPE Vectan SP 11 | <<locked>> | 94% | 50,763 psi | 88% | 3543 fps | 97.7% |
| SNPE Vectan SP 3 | <<locked>> | 82% | 52,417 psi | 90% | 3494 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 50,169 psi | 87% | 3484 fps | 97.6% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 52,272 psi | 90% | 3435 fps | 99.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 52,214 psi | 90% | 3422 fps | 100% |
| Somchem S321 | <<locked>> | 84% | 51,953 psi | 90% | 3517 fps | 99.1% |
| Somchem S335 | <<locked>> | 88% | 51,343 psi | 89% | 3422 fps | 100% |
| Somchem S341 | <<locked>> | 86% | 48,994 psi | 84% | 3438 fps | 97.3% |
| Somchem S355 | <<locked>> | 94% | 49,472 psi | 85% | 3478 fps | 97.9% |
| Somchem S365ᴾ | <<locked>> | 100% | 43,859 psi | 76% | 3451 fps | 98.1% |
| Vihtavuori N130 | <<locked>> | 84% | 50,589 psi | 87% | 3392 fps | 100% |
| Vihtavuori N133 | <<locked>> | 90% | 51,387 psi | 89% | 3419 fps | 100% |
| Vihtavuori N135 | <<locked>> | 90% | 49,734 psi | 86% | 3451 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 50,386 psi | 87% | 3448 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 50,778 psi | 88% | 3468 fps | 99.2% |
| Vihtavuori N160 | <<locked>> | 98% | 50,966 psi | 88% | 3504 fps | 96.3% |
| Vihtavuori N530 | <<locked>> | 84% | 50,415 psi | 87% | 3491 fps | 98.8% |
| Vihtavuori N540 | <<locked>> | 90% | 50,198 psi | 87% | 3471 fps | 99.8% |
| Vihtavuori N550 | <<locked>> | 98% | 51,459 psi | 89% | 3563 fps | 96.4% |
| Winchester 6.5 StaBALL | <<locked>> | 98% | 49,951 psi | 86% | 3445 fps | 98.3% |
| Winchester 748 | <<locked>> | 84% | 51,213 psi | 88% | 3543 fps | 99.4% |
| Winchester StaBALL Match | <<locked>> | 82% | 51,053 psi | 88% | 3517 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% | 43,062 psi | 74% | 3278 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 47,384 psi | 82% | 3396 fps | 99.5% |
| Accurate 2495 | <<locked>> | 80% | 35,650 psi | 61% | 3143 fps | 99.5% |
| Accurate 2520 | <<locked>> | 80% | 40,901 psi | 71% | 3294 fps | 98.2% |
| Accurate 4064 | <<locked>> | 80% | 33,692 psi | 58% | 3107 fps | 97.2% |
| Accurate 4350 | <<locked>> | 98% | 46,166 psi | 80% | 3455 fps | 95.3% |
| ADI AR 2206H | <<locked>> | 82% | 42,554 psi | 73% | 3327 fps | 95.6% |
| ADI AR 2208 | <<locked>> | 88% | 43,772 psi | 75% | 3327 fps | 95.2% |
| ADI Benchmark 8208 | <<locked>> | 80% | 41,640 psi | 72% | 3281 fps | 96.8% |
| Alliant AR-Comp | <<locked>> | 80% | 40,988 psi | 71% | 3307 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 48,196 psi | 83% | 3530 fps | 97.6% |
| Alliant Power Pro 2000-MR | <<locked>> | 88% | 47,718 psi | 82% | 3553 fps | 96% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 37,594 psi | 65% | 3212 fps | 95.1% |
| Alliant Reloder-10x | <<locked>> | 80% | 48,704 psi | 84% | 3415 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 43,453 psi | 75% | 3363 fps | 95.3% |
| Alliant Reloder-16 | <<locked>> | 98% | 45,774 psi | 79% | 3471 fps | 95.2% |
| Alliant Reloder-17 | 38.6 gr | 90% | 40,176 psi | 69% | 3356 fps | 95.3% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 44,744 psi | 77% | 3379 fps | 95% |
| Bofors RP3 | <<locked>> | 84% | 37,376 psi | 64% | 3215 fps | 95.1% |
| Hodgdon Benchmark | <<locked>> | 80% | 43,555 psi | 75% | 3287 fps | 97.9% |
| Hodgdon BL-C2 | <<locked>> | 80% | 40,364 psi | 70% | 3287 fps | 97% |
| Hodgdon CFE223 | <<locked>> | 80% | 44,179 psi | 76% | 3445 fps | 95.4% |
| Hodgdon H322 | <<locked>> | 80% | 44,179 psi | 76% | 3363 fps | 99.7% |
| Hodgdon H4895 | <<locked>> | 80% | 39,900 psi | 69% | 3268 fps | 95.4% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 39,175 psi | 68% | 3258 fps | 95% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 38,754 psi | 67% | 3281 fps | 95.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,498 psi | 44% | 2054 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 40,669 psi | 70% | 3268 fps | 95.6% |
| IMR 3031 | <<locked>> | 80% | 35,549 psi | 61% | 3202 fps | 98.9% |
| IMR 4064 | <<locked>> | 88% | 42,395 psi | 73% | 3294 fps | 95.1% |
| IMR 4198 | <<locked>> | 80% | 49,081 psi | 85% | 3389 fps | 100% |
| IMR 4895 | <<locked>> | 84% | 41,727 psi | 72% | 3337 fps | 95.5% |
| IMR 8208 XBR | <<locked>> | 80% | 41,640 psi | 72% | 3281 fps | 96.8% |
| Lovex D073.5 | <<locked>> | 80% | 47,079 psi | 81% | 3389 fps | 98.8% |
| Lovex D073.6 | <<locked>> | 80% | 38,261 psi | 66% | 3225 fps | 97.5% |
| Lovex S060 | <<locked>> | 80% | 40,393 psi | 70% | 3202 fps | 95% |
| Lovex S062 | <<locked>> | 82% | 37,652 psi | 65% | 3182 fps | 95.6% |
| Norma 201 | <<locked>> | 80% | 38,827 psi | 67% | 3205 fps | 96% |
| Norma 202 | <<locked>> | 80% | 38,986 psi | 67% | 3228 fps | 98.3% |
| Norma 203B | <<locked>> | 86% | 42,757 psi | 74% | 3350 fps | 95.8% |
| Norma URP | <<locked>> | 98% | 46,137 psi | 80% | 3455 fps | 95.2% |
| Ramshot Big Game | <<locked>> | 86% | 42,656 psi | 74% | 3356 fps | 95.5% |
| Ramshot Wild Boar | <<locked>> | 80% | 41,118 psi | 71% | 3287 fps | 95.1% |
| Ramshot X-Terminator | <<locked>> | 80% | 45,600 psi | 79% | 3340 fps | 96.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,657 psi | 44% | 2100 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 47,007 psi | 81% | 3406 fps | 99.1% |
| ReloadSwiss RS 52 | 36.3 gr | 86% | 45,440 psi | 78% | 3484 fps | 95.8% |
| ReloadSwiss RS 60 | 36.1 gr | 84% | 35,085 psi | 61% | 3225 fps | 95.8% |
| Rottweil R 901 | <<locked>> | 80% | 42,598 psi | 73% | 3291 fps | 98.8% |
| Rottweil R 902 | <<locked>> | 80% | 37,086 psi | 64% | 3150 fps | 95.3% |
| Rottweil R 903 | <<locked>> | 88% | 39,871 psi | 69% | 3271 fps | 95.7% |
| Shooters World Match Rifle | <<locked>> | 80% | 38,261 psi | 66% | 3225 fps | 97.5% |
| Shooters World Precision | <<locked>> | 82% | 37,652 psi | 65% | 3182 fps | 95.6% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 41,524 psi | 72% | 3337 fps | 95.2% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 49,458 psi | 85% | 3442 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 41,191 psi | 71% | 3281 fps | 95.2% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 40,553 psi | 70% | 3192 fps | 98.7% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 33,402 psi | 58% | 3009 fps | 97.8% |
| Somchem S321 | <<locked>> | 80% | 45,063 psi | 78% | 3373 fps | 97.9% |
| Somchem S335 | <<locked>> | 80% | 39,929 psi | 69% | 3182 fps | 99.1% |
| Somchem S341 | <<locked>> | 82% | 42,438 psi | 73% | 3294 fps | 95.5% |
| Somchem S355 | <<locked>> | 88% | 40,799 psi | 70% | 3281 fps | 95.7% |
| Somchem S365 | <<locked>> | 94% | 36,027 psi | 62% | 3241 fps | 95.5% |
| Vihtavuori N130 | <<locked>> | 80% | 44,831 psi | 77% | 3281 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 37,985 psi | 66% | 3136 fps | 99.7% |
| Vihtavuori N135 | <<locked>> | 80% | 35,998 psi | 62% | 3156 fps | 99.5% |
| Vihtavuori N140 | <<locked>> | 80% | 36,405 psi | 63% | 3136 fps | 98% |
| Vihtavuori N150 | <<locked>> | 88% | 34,693 psi | 60% | 3094 fps | 95.2% |
| Vihtavuori N160 | <<locked>> | 96% | 47,674 psi | 82% | 3435 fps | 95.5% |
| Vihtavuori N530 | <<locked>> | 80% | 43,830 psi | 76% | 3350 fps | 97.5% |
| Vihtavuori N540 | <<locked>> | 80% | 36,187 psi | 62% | 3150 fps | 97.5% |
| Vihtavuori N550 | <<locked>> | 96% | 47,834 psi | 82% | 3488 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 40,466 psi | 70% | 3235 fps | 95.7% |
| Winchester 748 | <<locked>> | 80% | 44,193 psi | 76% | 3392 fps | 98.3% |
| Winchester StaBALL Match | <<locked>> | 80% | 47,485 psi | 82% | 3442 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 75 powders for .22-250 Ackley Improved loaded with the .224 | 55gr | Speer SP w/C. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 3,625 fps; across all powders the maximum-charge window runs from 2,290 fps to 3,625 fps. Accurate 4350 gives the best case fill at 100 %, and 75 of the 75 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 1:12.5 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 SP w/C 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.