Load Specifications
Load data in caliber .17 Libra with .172 | 25gr | Hornady V-MAX bullet and 10 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Hodgdon LilGun, Accurate No. 11 FS and Lovex S040.
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 No. 11 FS | <<locked>> | 98% | 53,258 psi | 85% | 3219 fps | 97.5% |
| ADI APS 450 | <<locked>> | 88% | 55,767 psi | 89% | 2484 fps | 100% |
| ADI AR 2205ᴾ | <<locked>> | 100% | 51,938 psi | 83% | 3107 fps | 98.8% |
| Hodgdon LilGun | <<locked>> | 96% | 54,563 psi | 87% | 3346 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 25,063 psi | 40% | 1900 fps | 100% |
| Lovex S040 | <<locked>> | 96% | 55,985 psi | 90% | 3202 fps | 100% |
| Lovex S053ᴾ | <<locked>> | 100% | 37,072 psi | 59% | 2946 fps | 96% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 23,438 psi | 38% | 1923 fps | 100% |
| SNPE Vectan BA6 1/2ᴾ | <<locked>> | 100% | 34,447 psi | 55% | 2808 fps | 100% |
| Vihtavuori N110ᴾ | <<locked>> | 100% | 45,353 psi | 73% | 3094 fps | 100% |
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 No. 11 FS | 8.7 gr | 92% | 43,062 psi | 69% | 3038 fps | 95.5% |
| ADI APS 450 | <<locked>> | 80% | 47,921 psi | 77% | 2362 fps | 100% |
| ADI AR 2205 | <<locked>> | 86% | 34,360 psi | 55% | 2759 fps | 95% |
| Hodgdon LilGun | 7.6 gr | 80% | 31,401 psi | 50% | 2913 fps | 99.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 18,333 psi | 29% | 1706 fps | 100% |
| Lovex S040 | 6.5 gr | 80% | 35,027 psi | 56% | 2815 fps | 99% |
| Lovex S053 | <<locked>> | 98% | 35,810 psi | 57% | 2917 fps | 95.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 17,260 psi | 28% | 1726 fps | 100% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 20,320 psi | 33% | 2382 fps | 96.5% |
| Vihtavuori N110 | <<locked>> | 80% | 24,918 psi | 40% | 2608 fps | 96.9% |
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 10 powders for .17 Libra loaded with the .172 | 25gr | Hornady V-MAX. Hodgdon LilGun delivers the highest muzzle velocity at 3,346 fps; across all powders the maximum-charge window runs from 1,900 fps to 3,346 fps. ADI AR 2205 gives the best case fill at 100 %, and 10 of the 10 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (430 MPa), the top charges use 38–90 %, leaving at least 10 % headroom. The 25.0 gr projectile in 0.172" calls for a 1:7.0 twist; slower twists will usually not stabilise this weight. ADI AR 2205, Hodgdon TrailBoss, Lovex S053 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, Accurate No. 11 FS, Lovex S040 rank at the top here: for .17 Libra with the .172 | 25gr | Hornady V-MAX 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.