Load Specifications
Load data in caliber .22-250 Ackley Improved with .224 | 55gr | Prvi Partizan SP bullet and 76 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% | 52,460 psi | 90% | 3461 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 51,024 psi | 88% | 3468 fps | 99.8% |
| Accurate 2495 | <<locked>> | 90% | 50,662 psi | 87% | 3465 fps | 100% |
| Accurate 2520 | <<locked>> | 86% | 51,155 psi | 88% | 3510 fps | 99.7% |
| Accurate 4064 | <<locked>> | 92% | 50,575 psi | 87% | 3504 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 50,067 psi | 86% | 3540 fps | 96.4% |
| ADI AR 2206H | <<locked>> | 88% | 51,938 psi | 90% | 3537 fps | 98% |
| ADI AR 2208 | <<locked>> | 92% | 49,719 psi | 86% | 3461 fps | 96.9% |
| ADI Benchmark 8208 | <<locked>> | 86% | 50,807 psi | 88% | 3484 fps | 98.7% |
| Alliant AR-Comp | <<locked>> | 86% | 50,691 psi | 87% | 3497 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 82% | 52,040 psi | 90% | 3615 fps | 98.4% |
| Alliant Power Pro 2000-MR | <<locked>> | 90% | 51,300 psi | 88% | 3635 fps | 97% |
| Alliant Reloder- TS 15.5 | <<locked>> | 94% | 52,460 psi | 90% | 3553 fps | 98.8% |
| Alliant Reloder-10x | <<locked>> | 82% | 52,083 psi | 90% | 3478 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 90% | 49,850 psi | 86% | 3510 fps | 97.1% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 48,776 psi | 84% | 3543 fps | 96.2% |
| Alliant Reloder-17 | <<locked>> | 96% | 49,937 psi | 86% | 3599 fps | 98.2% |
| Baschieri & Pellagri 107 | <<locked>> | 88% | 51,590 psi | 89% | 3530 fps | 96.9% |
| Bofors RP3 | <<locked>> | 92% | 49,327 psi | 85% | 3497 fps | 98.4% |
| Hodgdon Benchmark | <<locked>> | 84% | 49,777 psi | 86% | 3422 fps | 99% |
| Hodgdon BL-C2 | <<locked>> | 86% | 49,864 psi | 86% | 3504 fps | 99.1% |
| Hodgdon CFE223 | <<locked>> | 84% | 51,285 psi | 88% | 3606 fps | 97.3% |
| Hodgdon H322 | <<locked>> | 84% | 50,546 psi | 87% | 3494 fps | 100% |
| Hodgdon H380 | <<locked>> | 92% | 50,676 psi | 87% | 3497 fps | 95.9% |
| Hodgdon H4895 | <<locked>> | 88% | 52,388 psi | 90% | 3553 fps | 98.5% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 44,759 psi | 77% | 3396 fps | 96.9% |
| Hodgdon LEVERevolution | <<locked>> | 92% | 51,126 psi | 88% | 3570 fps | 98.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,418 psi | 59% | 2290 fps | 100% |
| Hodgdon VARGET | <<locked>> | 90% | 49,356 psi | 85% | 3468 fps | 97.9% |
| IMR 3031 | <<locked>> | 90% | 49,966 psi | 86% | 3530 fps | 100% |
| IMR 4064 | <<locked>> | 94% | 51,488 psi | 89% | 3494 fps | 97.5% |
| IMR 4198 | <<locked>> | 82% | 52,141 psi | 90% | 3445 fps | 100% |
| IMR 4895 | <<locked>> | 90% | 51,097 psi | 88% | 3550 fps | 97.9% |
| IMR 8208 XBR | <<locked>> | 86% | 50,807 psi | 88% | 3484 fps | 98.7% |
| Lovex D073.5 | <<locked>> | 82% | 50,720 psi | 87% | 3465 fps | 99.3% |
| Lovex D073.6 | <<locked>> | 88% | 51,155 psi | 88% | 3510 fps | 99.7% |
| Lovex S060 | <<locked>> | 88% | 51,909 psi | 90% | 3461 fps | 98% |
| Lovex S062 | <<locked>> | 92% | 51,967 psi | 90% | 3510 fps | 99% |
| Norma 201 | <<locked>> | 88% | 50,676 psi | 87% | 3478 fps | 98.8% |
| Norma 202 | <<locked>> | 88% | 51,053 psi | 88% | 3494 fps | 99.9% |
| Norma 203B | <<locked>> | 92% | 52,286 psi | 90% | 3556 fps | 98.1% |
| Norma URPᴾ | <<locked>> | 100% | 49,356 psi | 85% | 3524 fps | 96.1% |
| Ramshot Big Game | <<locked>> | 90% | 49,356 psi | 85% | 3507 fps | 97.4% |
| Ramshot Wild Boar | <<locked>> | 86% | 50,937 psi | 88% | 3514 fps | 97.8% |
| Ramshot X-Terminator | <<locked>> | 84% | 51,996 psi | 90% | 3478 fps | 97.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,838 psi | 60% | 2343 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 50,575 psi | 87% | 3481 fps | 99.5% |
| ReloadSwiss RS 52 | <<locked>> | 88% | 49,168 psi | 85% | 3566 fps | 96.8% |
| ReloadSwiss RS 60 | <<locked>> | 94% | 49,530 psi | 85% | 3612 fps | 99.7% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 50,096 psi | 86% | 3556 fps | 96.1% |
| Rottweil R 901 | <<locked>> | 86% | 51,605 psi | 89% | 3484 fps | 99.8% |
| Rottweil R 902 | <<locked>> | 90% | 51,184 psi | 88% | 3478 fps | 98.8% |
| Rottweil R 903 | <<locked>> | 94% | 49,182 psi | 85% | 3484 fps | 98.1% |
| Shooters World Match Rifle | <<locked>> | 88% | 51,155 psi | 88% | 3510 fps | 99.7% |
| Shooters World Precision | <<locked>> | 92% | 51,967 psi | 90% | 3510 fps | 99% |
| SNPE Vectan SP 11 | <<locked>> | 94% | 51,169 psi | 88% | 3553 fps | 97.8% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 50,169 psi | 87% | 3488 fps | 97.6% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 52,344 psi | 90% | 3435 fps | 99.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 52,272 psi | 90% | 3422 fps | 100% |
| Somchem S321 | <<locked>> | 84% | 51,996 psi | 90% | 3517 fps | 99.1% |
| Somchem S335 | <<locked>> | 88% | 51,750 psi | 89% | 3432 fps | 100% |
| Somchem S341 | <<locked>> | 86% | 49,066 psi | 85% | 3442 fps | 97.3% |
| Somchem S355 | <<locked>> | 94% | 49,922 psi | 86% | 3491 fps | 98.1% |
| Somchem S365ᴾ | <<locked>> | 100% | 44,309 psi | 76% | 3461 fps | 98.3% |
| Vihtavuori N130 | <<locked>> | 84% | 51,068 psi | 88% | 3402 fps | 100% |
| Vihtavuori N133 | <<locked>> | 90% | 51,445 psi | 89% | 3419 fps | 100% |
| Vihtavuori N135 | <<locked>> | 90% | 50,227 psi | 87% | 3461 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 50,850 psi | 88% | 3461 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 51,213 psi | 88% | 3474 fps | 99.2% |
| Vihtavuori N160 | <<locked>> | 98% | 51,387 psi | 89% | 3514 fps | 96.5% |
| Vihtavuori N530 | <<locked>> | 84% | 50,459 psi | 87% | 3497 fps | 98.8% |
| Vihtavuori N540 | <<locked>> | 90% | 50,633 psi | 87% | 3481 fps | 99.9% |
| Vihtavuori N550 | <<locked>> | 98% | 51,445 psi | 89% | 3563 fps | 96.4% |
| Winchester 6.5 StaBALL | <<locked>> | 98% | 49,922 psi | 86% | 3445 fps | 98.3% |
| Winchester 748 | <<locked>> | 84% | 51,271 psi | 88% | 3547 fps | 99.4% |
| Winchester StaBALL Match | <<locked>> | 82% | 51,532 psi | 89% | 3527 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% | 43,178 psi | 74% | 3281 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 47,471 psi | 82% | 3399 fps | 99.5% |
| Accurate 2495 | <<locked>> | 80% | 36,100 psi | 62% | 3153 fps | 99.6% |
| Accurate 2520 | <<locked>> | 80% | 41,321 psi | 71% | 3304 fps | 98.3% |
| Accurate 4064 | <<locked>> | 80% | 34,069 psi | 59% | 3120 fps | 97.4% |
| Accurate 4350 | <<locked>> | 98% | 46,630 psi | 80% | 3465 fps | 95.4% |
| ADI AR 2206H | <<locked>> | 82% | 42,641 psi | 74% | 3330 fps | 95.7% |
| ADI AR 2208 | <<locked>> | 88% | 43,801 psi | 76% | 3330 fps | 95.3% |
| ADI Benchmark 8208 | <<locked>> | 80% | 42,032 psi | 72% | 3291 fps | 96.9% |
| Alliant AR-Comp | <<locked>> | 80% | 41,104 psi | 71% | 3314 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 48,718 psi | 84% | 3543 fps | 97.8% |
| Alliant Power Pro 2000-MR | <<locked>> | 88% | 47,747 psi | 82% | 3553 fps | 96% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 38,000 psi | 66% | 3222 fps | 95.2% |
| Alliant Reloder-10x | <<locked>> | 80% | 48,805 psi | 84% | 3419 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 43,540 psi | 75% | 3366 fps | 95.4% |
| Alliant Reloder-16 | <<locked>> | 98% | 45,774 psi | 79% | 3468 fps | 95.2% |
| Alliant Reloder-17 | 38.8 gr | 90% | 40,538 psi | 70% | 3366 fps | 95.4% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 44,788 psi | 77% | 3383 fps | 95.1% |
| Bofors RP3 | <<locked>> | 84% | 37,478 psi | 65% | 3215 fps | 95.2% |
| Hodgdon Benchmark | <<locked>> | 80% | 43,976 psi | 76% | 3294 fps | 98% |
| Hodgdon BL-C2 | <<locked>> | 80% | 40,451 psi | 70% | 3294 fps | 97.1% |
| Hodgdon CFE223 | <<locked>> | 80% | 44,295 psi | 76% | 3451 fps | 95.5% |
| Hodgdon H322 | <<locked>> | 80% | 44,295 psi | 76% | 3366 fps | 99.7% |
| Hodgdon H380 | <<locked>> | 90% | 47,485 psi | 82% | 3432 fps | 95% |
| Hodgdon H4895 | <<locked>> | 80% | 40,321 psi | 70% | 3278 fps | 95.6% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 39,552 psi | 68% | 3268 fps | 95.2% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 39,131 psi | 67% | 3294 fps | 95.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,701 psi | 44% | 2060 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 40,741 psi | 70% | 3271 fps | 95.7% |
| IMR 3031 | <<locked>> | 80% | 35,665 psi | 62% | 3205 fps | 98.9% |
| IMR 4064 | <<locked>> | 88% | 42,815 psi | 74% | 3301 fps | 95.2% |
| IMR 4198 | <<locked>> | 80% | 49,211 psi | 85% | 3389 fps | 100% |
| IMR 4895 | <<locked>> | 84% | 41,771 psi | 72% | 3340 fps | 95.5% |
| IMR 8208 XBR | <<locked>> | 80% | 42,032 psi | 72% | 3291 fps | 96.9% |
| Lovex D073.5 | <<locked>> | 80% | 47,543 psi | 82% | 3402 fps | 98.9% |
| Lovex D073.6 | <<locked>> | 80% | 38,653 psi | 67% | 3235 fps | 97.7% |
| Lovex S060 | <<locked>> | 80% | 40,495 psi | 70% | 3205 fps | 95.1% |
| Lovex S062 | <<locked>> | 82% | 37,753 psi | 65% | 3186 fps | 95.7% |
| Norma 201 | <<locked>> | 80% | 39,233 psi | 68% | 3215 fps | 96.1% |
| Norma 202 | <<locked>> | 80% | 39,059 psi | 67% | 3232 fps | 98.4% |
| Norma 203B | <<locked>> | 86% | 42,801 psi | 74% | 3350 fps | 95.8% |
| Norma URP | <<locked>> | 98% | 46,180 psi | 80% | 3458 fps | 95.2% |
| Ramshot Big Game | <<locked>> | 86% | 42,728 psi | 74% | 3360 fps | 95.6% |
| Ramshot Wild Boar | <<locked>> | 80% | 41,191 psi | 71% | 3294 fps | 95.2% |
| Ramshot X-Terminator | <<locked>> | 80% | 45,658 psi | 79% | 3343 fps | 96.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,846 psi | 45% | 2106 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 47,108 psi | 81% | 3406 fps | 99.1% |
| ReloadSwiss RS 52 | 36.5 gr | 86% | 45,919 psi | 79% | 3494 fps | 95.9% |
| ReloadSwiss RS 60 | 36.2 gr | 84% | 35,157 psi | 61% | 3228 fps | 95.9% |
| ReloadSwiss RS 62 | <<locked>> | 98% | 46,470 psi | 80% | 3481 fps | 95.1% |
| Rottweil R 901 | <<locked>> | 80% | 42,685 psi | 74% | 3294 fps | 98.8% |
| Rottweil R 902 | <<locked>> | 80% | 37,188 psi | 64% | 3153 fps | 95.4% |
| Rottweil R 903 | <<locked>> | 88% | 40,263 psi | 69% | 3281 fps | 95.8% |
| Shooters World Match Rifle | <<locked>> | 80% | 38,653 psi | 67% | 3235 fps | 97.7% |
| Shooters World Precision | <<locked>> | 82% | 37,753 psi | 65% | 3186 fps | 95.7% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 41,553 psi | 72% | 3337 fps | 95.2% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 41,263 psi | 71% | 3284 fps | 95.2% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 40,596 psi | 70% | 3192 fps | 98.7% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 33,475 psi | 58% | 3012 fps | 97.9% |
| Somchem S321 | <<locked>> | 80% | 45,513 psi | 78% | 3383 fps | 98.1% |
| Somchem S335 | <<locked>> | 80% | 40,364 psi | 70% | 3196 fps | 99.2% |
| Somchem S341 | <<locked>> | 82% | 42,859 psi | 74% | 3304 fps | 95.7% |
| Somchem S355 | <<locked>> | 86% | 38,609 psi | 67% | 3225 fps | 95% |
| Somchem S365 | <<locked>> | 94% | 36,071 psi | 62% | 3241 fps | 95.5% |
| Vihtavuori N130 | <<locked>> | 80% | 44,918 psi | 77% | 3284 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 38,058 psi | 66% | 3140 fps | 99.7% |
| Vihtavuori N135 | <<locked>> | 80% | 36,129 psi | 62% | 3159 fps | 99.6% |
| Vihtavuori N140 | <<locked>> | 80% | 36,448 psi | 63% | 3140 fps | 98.1% |
| Vihtavuori N150 | <<locked>> | 88% | 34,737 psi | 60% | 3097 fps | 95.2% |
| Vihtavuori N160 | <<locked>> | 96% | 48,080 psi | 83% | 3448 fps | 95.6% |
| Vihtavuori N530 | <<locked>> | 80% | 43,888 psi | 76% | 3350 fps | 97.5% |
| Vihtavuori N540 | <<locked>> | 80% | 36,245 psi | 63% | 3153 fps | 97.6% |
| Vihtavuori N550 | <<locked>> | 96% | 48,240 psi | 83% | 3497 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 40,770 psi | 70% | 3241 fps | 95.9% |
| Winchester 748 | <<locked>> | 80% | 44,628 psi | 77% | 3406 fps | 98.4% |
| Winchester StaBALL Match | <<locked>> | 80% | 47,558 psi | 82% | 3445 fps | 97.7% |
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 76 powders for .22-250 Ackley Improved loaded with the .224 | 55gr | Prvi Partizan SP. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 3,635 fps; across all powders the maximum-charge window runs from 2,290 fps to 3,635 fps. Accurate 4350 gives the best case fill at 100 %, and 76 of the 76 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (400 MPa), the top charges use 59–90 %, leaving at least 10 % headroom. The 55.0 gr projectile in 0.224" calls for a 1:13.0 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 | Prvi Partizan SP 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.