Load Specifications
Load data in caliber .22-250 Ackley Improved with .227 | 58gr | Reichenberg HDB Universal bullet and 78 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% | 51,590 psi | 89% | 3373 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 50,212 psi | 87% | 3383 fps | 99.9% |
| Accurate 2495 | <<locked>> | 90% | 49,487 psi | 85% | 3376 fps | 100% |
| Accurate 2520 | <<locked>> | 86% | 50,169 psi | 87% | 3425 fps | 99.8% |
| Accurate 4064 | <<locked>> | 92% | 49,632 psi | 86% | 3419 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 49,371 psi | 85% | 3458 fps | 96.6% |
| ADI AR 2206H | <<locked>> | 88% | 51,459 psi | 89% | 3458 fps | 98.2% |
| ADI AR 2208 | <<locked>> | 92% | 49,342 psi | 85% | 3386 fps | 97.2% |
| ADI Benchmark 8208 | <<locked>> | 86% | 50,691 psi | 87% | 3412 fps | 99% |
| Alliant AR-Comp | <<locked>> | 86% | 50,024 psi | 86% | 3406 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 82% | 51,343 psi | 89% | 3524 fps | 98.6% |
| Alliant Power Pro 2000-MR | <<locked>> | 90% | 50,807 psi | 88% | 3556 fps | 97.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 94% | 51,663 psi | 89% | 3468 fps | 99% |
| Alliant Reloder-10x | <<locked>> | 82% | 51,561 psi | 89% | 3396 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 90% | 49,356 psi | 85% | 3428 fps | 97.3% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 48,240 psi | 83% | 3465 fps | 96.5% |
| Alliant Reloder-17 | <<locked>> | 96% | 49,472 psi | 85% | 3524 fps | 98.5% |
| Baschieri & Pellagri 107 | <<locked>> | 88% | 50,995 psi | 88% | 3448 fps | 97.1% |
| Bofors RP3 | <<locked>> | 94% | 52,257 psi | 90% | 3484 fps | 99.1% |
| Hodgdon Benchmark | <<locked>> | 86% | 52,388 psi | 90% | 3402 fps | 99.5% |
| Hodgdon BL-C2 | <<locked>> | 86% | 49,400 psi | 85% | 3422 fps | 99.2% |
| Hodgdon CFE223 | <<locked>> | 84% | 51,039 psi | 88% | 3530 fps | 97.7% |
| Hodgdon H322 | <<locked>> | 84% | 50,314 psi | 87% | 3415 fps | 100% |
| Hodgdon H380 | <<locked>> | 92% | 50,270 psi | 87% | 3425 fps | 96.2% |
| Hodgdon H4895 | <<locked>> | 88% | 51,909 psi | 90% | 3471 fps | 98.7% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 44,512 psi | 77% | 3330 fps | 97.3% |
| Hodgdon LEVERevolution | <<locked>> | 92% | 50,908 psi | 88% | 3494 fps | 98.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,287 psi | 59% | 2224 fps | 100% |
| Hodgdon VARGET | <<locked>> | 92% | 52,214 psi | 90% | 3458 fps | 98.7% |
| IMR 3031 | <<locked>> | 90% | 49,327 psi | 85% | 3442 fps | 100% |
| IMR 4064 | <<locked>> | 94% | 51,068 psi | 88% | 3415 fps | 97.7% |
| IMR 4198 | <<locked>> | 82% | 51,721 psi | 89% | 3360 fps | 100% |
| IMR 4895 | <<locked>> | 90% | 50,589 psi | 87% | 3471 fps | 98.1% |
| IMR 8208 XBR | <<locked>> | 86% | 50,691 psi | 87% | 3412 fps | 99% |
| Lovex D073.5 | <<locked>> | 82% | 49,922 psi | 86% | 3379 fps | 99.4% |
| Lovex D073.6 | <<locked>> | 88% | 50,169 psi | 87% | 3425 fps | 99.8% |
| Lovex S060 | <<locked>> | 88% | 51,430 psi | 89% | 3383 fps | 98.2% |
| Lovex S062 | <<locked>> | 92% | 51,445 psi | 89% | 3432 fps | 99.2% |
| Norma 201 | <<locked>> | 88% | 49,908 psi | 86% | 3396 fps | 98.9% |
| Norma 202 | <<locked>> | 88% | 50,444 psi | 87% | 3412 fps | 100% |
| Norma 203B | <<locked>> | 92% | 51,866 psi | 89% | 3481 fps | 98.3% |
| Norma URPᴾ | <<locked>> | 100% | 48,820 psi | 84% | 3448 fps | 96.4% |
| Ramshot Big Game | <<locked>> | 90% | 48,733 psi | 84% | 3428 fps | 97.6% |
| Ramshot Wild Boar | <<locked>> | 86% | 50,212 psi | 87% | 3425 fps | 97.9% |
| Ramshot X-Terminator | <<locked>> | 84% | 51,547 psi | 89% | 3399 fps | 98.1% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,679 psi | 60% | 2277 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 49,966 psi | 86% | 3396 fps | 99.6% |
| ReloadSwiss RS 52 | <<locked>> | 90% | 52,359 psi | 90% | 3560 fps | 97.8% |
| ReloadSwiss RS 60 | <<locked>> | 94% | 49,023 psi | 85% | 3533 fps | 99.8% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 49,313 psi | 85% | 3478 fps | 96.3% |
| Rottweil R 901 | <<locked>> | 86% | 50,488 psi | 87% | 3392 fps | 99.9% |
| Rottweil R 902 | <<locked>> | 90% | 50,444 psi | 87% | 3392 fps | 99% |
| Rottweil R 903 | <<locked>> | 96% | 51,648 psi | 89% | 3461 fps | 98.8% |
| Shooters World Match Rifle | <<locked>> | 88% | 50,169 psi | 87% | 3425 fps | 99.8% |
| Shooters World Precision | <<locked>> | 92% | 51,445 psi | 89% | 3432 fps | 99.2% |
| SNPE Vectan SP 11 | <<locked>> | 94% | 50,633 psi | 87% | 3474 fps | 98% |
| SNPE Vectan SP 7 | <<locked>> | 88% | 52,475 psi | 90% | 3435 fps | 96.6% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 49,835 psi | 86% | 3412 fps | 97.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 51,648 psi | 89% | 3353 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 51,880 psi | 89% | 3346 fps | 100% |
| Somchem S321 | <<locked>> | 84% | 51,532 psi | 89% | 3442 fps | 99.3% |
| Somchem S335 | <<locked>> | 88% | 51,097 psi | 88% | 3346 fps | 100% |
| Somchem S341 | <<locked>> | 88% | 52,040 psi | 90% | 3432 fps | 98.2% |
| Somchem S355 | <<locked>> | 96% | 52,460 psi | 90% | 3468 fps | 98.8% |
| Somchem S365ᴾ | <<locked>> | 100% | 43,685 psi | 75% | 3386 fps | 98.5% |
| Unknown powder | <<locked>> | 98% | 50,357 psi | 87% | 3468 fps | 96% |
| Vihtavuori N130 | <<locked>> | 84% | 50,270 psi | 87% | 3314 fps | 100% |
| Vihtavuori N133 | <<locked>> | 90% | 51,227 psi | 88% | 3343 fps | 100% |
| Vihtavuori N135 | <<locked>> | 90% | 49,559 psi | 85% | 3376 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 50,372 psi | 87% | 3379 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 50,473 psi | 87% | 3396 fps | 99.4% |
| Vihtavuori N160 | <<locked>> | 98% | 50,937 psi | 88% | 3438 fps | 96.8% |
| Vihtavuori N530 | <<locked>> | 84% | 49,850 psi | 86% | 3412 fps | 99% |
| Vihtavuori N540 | <<locked>> | 90% | 50,227 psi | 87% | 3402 fps | 99.9% |
| Vihtavuori N550 | <<locked>> | 98% | 50,937 psi | 88% | 3488 fps | 96.7% |
| Winchester 6.5 StaBALL | <<locked>> | 98% | 49,632 psi | 86% | 3379 fps | 98.6% |
| Winchester 748 | <<locked>> | 84% | 50,894 psi | 88% | 3468 fps | 99.5% |
| Winchester StaBALL Match | <<locked>> | 82% | 50,836 psi | 88% | 3445 fps | 98.6% |
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% | 42,467 psi | 73% | 3196 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 46,557 psi | 80% | 3310 fps | 99.6% |
| Accurate 2495 | <<locked>> | 80% | 34,664 psi | 60% | 3054 fps | 99.6% |
| Accurate 2520 | <<locked>> | 80% | 40,466 psi | 70% | 3219 fps | 98.5% |
| Accurate 4064 | <<locked>> | 80% | 32,793 psi | 57% | 3022 fps | 97.3% |
| Accurate 4350 | <<locked>> | 98% | 45,847 psi | 79% | 3386 fps | 95.7% |
| ADI AR 2206H | <<locked>> | 80% | 39,204 psi | 68% | 3179 fps | 95% |
| ADI AR 2208 | <<locked>> | 88% | 43,279 psi | 75% | 3251 fps | 95.6% |
| ADI Benchmark 8208 | <<locked>> | 80% | 41,263 psi | 71% | 3209 fps | 97.1% |
| Alliant AR-Comp | <<locked>> | 80% | 40,596 psi | 70% | 3228 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 47,892 psi | 83% | 3455 fps | 98% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 44,092 psi | 76% | 3399 fps | 95.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 37,231 psi | 64% | 3143 fps | 95.5% |
| Alliant Reloder-10x | <<locked>> | 80% | 48,167 psi | 83% | 3333 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 43,236 psi | 75% | 3294 fps | 95.7% |
| Alliant Reloder-16 | <<locked>> | 98% | 45,165 psi | 78% | 3389 fps | 95.6% |
| Alliant Reloder-17 | 37.9 gr | 90% | 39,813 psi | 69% | 3284 fps | 95.7% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 44,411 psi | 77% | 3310 fps | 95.4% |
| Bofors RP3 | <<locked>> | 84% | 36,608 psi | 63% | 3133 fps | 95.4% |
| Hodgdon Benchmark | <<locked>> | 80% | 43,569 psi | 75% | 3222 fps | 98.2% |
| Hodgdon BL-C2 | <<locked>> | 80% | 39,711 psi | 68% | 3212 fps | 97.3% |
| Hodgdon CFE223 | <<locked>> | 80% | 43,787 psi | 76% | 3369 fps | 95.8% |
| Hodgdon H322 | <<locked>> | 80% | 43,845 psi | 76% | 3284 fps | 99.8% |
| Hodgdon H380 | <<locked>> | 90% | 46,615 psi | 80% | 3350 fps | 95.2% |
| Hodgdon H4895 | <<locked>> | 80% | 39,479 psi | 68% | 3196 fps | 95.8% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 38,812 psi | 67% | 3189 fps | 95.4% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 36,042 psi | 62% | 3146 fps | 95% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,338 psi | 44% | 1995 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 37,753 psi | 65% | 3130 fps | 95.1% |
| IMR 3031 | <<locked>> | 80% | 35,027 psi | 60% | 3123 fps | 99.1% |
| IMR 4064 | <<locked>> | 88% | 42,134 psi | 73% | 3222 fps | 95.5% |
| IMR 4198 | <<locked>> | 80% | 48,733 psi | 84% | 3304 fps | 100% |
| IMR 4895 | <<locked>> | 84% | 41,060 psi | 71% | 3258 fps | 95.7% |
| IMR 8208 XBR | <<locked>> | 80% | 41,263 psi | 71% | 3209 fps | 97.1% |
| Lovex D073.5 | <<locked>> | 80% | 46,688 psi | 81% | 3317 fps | 99% |
| Lovex D073.6 | <<locked>> | 80% | 37,724 psi | 65% | 3150 fps | 97.8% |
| Lovex S060 | <<locked>> | 80% | 40,001 psi | 69% | 3130 fps | 95.4% |
| Lovex S062 | <<locked>> | 80% | 34,679 psi | 60% | 3041 fps | 95% |
| Norma 201 | <<locked>> | 80% | 38,189 psi | 66% | 3127 fps | 96.3% |
| Norma 202 | <<locked>> | 80% | 38,508 psi | 66% | 3153 fps | 98.6% |
| Norma 203B | <<locked>> | 84% | 39,407 psi | 68% | 3202 fps | 95.2% |
| Norma URP | <<locked>> | 98% | 45,527 psi | 79% | 3379 fps | 95.5% |
| Ramshot Big Game | <<locked>> | 86% | 42,308 psi | 73% | 3284 fps | 95.9% |
| Ramshot Wild Boar | <<locked>> | 80% | 40,582 psi | 70% | 3215 fps | 95.5% |
| Ramshot X-Terminator | <<locked>> | 80% | 45,078 psi | 78% | 3264 fps | 96.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,454 psi | 44% | 2041 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 46,775 psi | 81% | 3330 fps | 99.3% |
| ReloadSwiss RS 52 | 34.8 gr | 84% | 41,959 psi | 72% | 3333 fps | 95.2% |
| ReloadSwiss RS 60 | 35.4 gr | 84% | 34,577 psi | 60% | 3153 fps | 96.2% |
| ReloadSwiss RS 62 | <<locked>> | 98% | 45,992 psi | 79% | 3406 fps | 95.4% |
| Rottweil R 901 | <<locked>> | 80% | 41,756 psi | 72% | 3205 fps | 98.9% |
| Rottweil R 902 | <<locked>> | 80% | 36,405 psi | 63% | 3071 fps | 95.6% |
| Rottweil R 903 | <<locked>> | 86% | 36,825 psi | 64% | 3130 fps | 95.1% |
| Shooters World Match Rifle | <<locked>> | 80% | 37,724 psi | 65% | 3150 fps | 97.8% |
| Shooters World Precision | <<locked>> | 80% | 34,679 psi | 60% | 3041 fps | 95% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 41,118 psi | 71% | 3261 fps | 95.6% |
| SNPE Vectan SP 7 | <<locked>> | 86% | 49,095 psi | 85% | 3369 fps | 95.8% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 40,625 psi | 70% | 3205 fps | 95.5% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 40,045 psi | 69% | 3114 fps | 98.8% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 32,909 psi | 57% | 2933 fps | 98.1% |
| Somchem S321 | <<locked>> | 80% | 44,831 psi | 77% | 3304 fps | 98.3% |
| Somchem S335 | <<locked>> | 80% | 39,421 psi | 68% | 3107 fps | 99.3% |
| Somchem S341 | <<locked>> | 80% | 39,320 psi | 68% | 3153 fps | 95% |
| Somchem S355 | <<locked>> | 86% | 37,797 psi | 65% | 3143 fps | 95.2% |
| Somchem S365 | <<locked>> | 94% | 35,578 psi | 61% | 3173 fps | 95.9% |
| Unknown powder | <<locked>> | 96% | 47,094 psi | 81% | 3399 fps | 95.1% |
| Vihtavuori N130 | <<locked>> | 80% | 44,367 psi | 77% | 3202 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 37,463 psi | 65% | 3061 fps | 99.8% |
| Vihtavuori N135 | <<locked>> | 80% | 35,418 psi | 61% | 3074 fps | 99.6% |
| Vihtavuori N140 | <<locked>> | 80% | 35,940 psi | 62% | 3064 fps | 98.3% |
| Vihtavuori N150 | <<locked>> | 88% | 34,287 psi | 59% | 3025 fps | 95.6% |
| Vihtavuori N160 | <<locked>> | 96% | 47,529 psi | 82% | 3369 fps | 95.9% |
| Vihtavuori N530 | <<locked>> | 80% | 43,497 psi | 75% | 3274 fps | 97.8% |
| Vihtavuori N540 | <<locked>> | 80% | 35,781 psi | 62% | 3077 fps | 97.8% |
| Vihtavuori N550 | <<locked>> | 94% | 44,527 psi | 77% | 3350 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 37,405 psi | 65% | 3097 fps | 95.1% |
| Winchester 748 | <<locked>> | 80% | 44,092 psi | 76% | 3327 fps | 98.6% |
| Winchester StaBALL Match | <<locked>> | 80% | 47,166 psi | 81% | 3369 fps | 97.9% |
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 78 powders for .22-250 Ackley Improved loaded with the .227 | 58gr | Reichenberg HDB Universal. ReloadSwiss RS 52 delivers the highest muzzle velocity at 3,560 fps; across all powders the maximum-charge window runs from 2,224 fps to 3,560 fps. Accurate 4350 gives the best case fill at 100 %, and 78 of the 78 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 58.0 gr projectile in 0.227" calls for a 1:11.0 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 .227 | 58gr | Reichenberg HDB Universal 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.