My Leshiy is one from the March/April batch at EDGun West and as such it's apparently a "Gen2" Leshiy. I purchased a Huma regulator at the same time as the rifle and just installed it a couple weekends ago. My stock Leshiy reg was marked at 130 bar, and I installed the Huma as it came from Brian at EDGun West, because I assumed 110 bar (factory setting on the Huma) was the right answer based on earlier posts/work with a Huma in the Leshiy 25.
With the Huma @ 110, I got the following results across the Oehler:
These strings are at different HST settings, to see the impact of cranking up/down the power. To be fair, the first string I shot (blue) at the stock HST setting was immediately after doing the reg swap - I probably should have shot a fill through it before running the chrono, to see if the reg would settle in. The variation in that blue string is more than I'd expect. All that said, the data suggests my sweet spot is probably that 725 fps set at -2 clicks on the HST. The gun is noticeably quieter there than at the higher power settings and a 25.39 @ 725 fps (30 ft .lb) gets the job done for all of my pesting needs to date.
I posted this data on another forum and Brian chimed in to note that the "correct" setting for the Huma in a .25 cal is at 130 bar with the newer Leshiys, which come with a heavier valve return spring. He indicated that the 110 bar setting was the right spot for earlier Leshiys in .25 cal.
If I have weather and time, I'll have to re-run these strings at 130 bar this weekend and compare the result.