Load Specifications
Load data in caliber .22 Ackley Hornet with .222 | 45gr | Prvi Partizan SP bullet and 6 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Hodgdon LilGun, Vihtavuori N110 and SNPE Vectan BA6 1/2.
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: 22"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Hodgdon LilGun | <<locked>> | 90% | 37,768 psi | 87% | 2690 fps | 99.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 23,322 psi | 54% | 1644 fps | 100% |
| Lovex S040 | <<locked>> | 86% | 38,145 psi | 88% | 2526 fps | 98.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 22,510 psi | 52% | 1680 fps | 100% |
| SNPE Vectan BA6 1/2ᴾ | <<locked>> | 100% | 30,168 psi | 69% | 2372 fps | 99% |
| Vihtavuori N110ᴾ | <<locked>> | 100% | 38,943 psi | 90% | 2608 fps | 99.4% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 22"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Hodgdon LilGun | 10.1 gr | 80% | 26,353 psi | 61% | 2434 fps | 97% |
| Hodgdon TrailBoss | <<locked>> | 80% | 16,984 psi | 39% | 1473 fps | 100% |
| Lovex S040 | <<locked>> | 80% | 31,502 psi | 72% | 2385 fps | 97% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 16,563 psi | 38% | 1512 fps | 100% |
| SNPE Vectan BA6 1/2 | 8.6 gr | 86% | 21,074 psi | 48% | 2116 fps | 95.4% |
| Vihtavuori N110 | 8.8 gr | 84% | 24,091 psi | 55% | 2267 fps | 95.1% |
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 6 powders for .22 Ackley Hornet loaded with the .222 | 45gr | Prvi Partizan SP. Hodgdon LilGun delivers the highest muzzle velocity at 2,690 fps; across all powders the maximum-charge window runs from 1,644 fps to 2,690 fps. Hodgdon TrailBoss gives the best case fill at 100 %, and 6 of the 6 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (300 MPa), the top charges use 52–90 %, leaving at least 10 % headroom. Hodgdon TrailBoss, ReloadSwiss RS 14, SNPE Vectan BA6 1/2 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. Hodgdon LilGun, Vihtavuori N110, SNPE Vectan BA6 1/2 rank at the top here: for .22 Ackley Hornet with the .222 | 45gr | 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.