Matthias, just acknowledge your post - I own one (.22), but do not know. I bought it used, but the original owner didn't remember if he adjusted the regulator while also doing some hammer spring adjustments. In my notes, I've recorded settings quoted in videos (90 & 150 bar), but 90 seems really low. I shot one string that seemed to show velocities dropping off below 150, but I never went back & confirmed it. 125 bar seems more logical, but I don't have any testing to back that up. Is this your rifle, a friend's, or more research?
Other than that, it's a great rifle. I hope they can get back on the market once the war is over.
Thanks for responding!
The gun is not mine — though I purchased it to help out a friend here in Peru that is struggling financially. (He will pay for it eventually, when he sells his hit-or-miss PCP and can pick up more work hours.)
Yeah, your estimate of
125bar sounds like a typical number for a .22 with 30FPE. Maybe that's all he needs at this point.
You mention the war and Zbroia not being sold in the US.

Well, here in Peru the Zbroia brand is being sold — so that's the bright side.
However, Zbroia is only sold by one(!) gun store.
Another gun store sells FX (one store, again).
3 stores sell Hatsan, Air Ventury, Snowpeak.
2 stores sell Norica, Stoeger, Ruger, Beeman, and Benjamin.
Amount of model choices from each brand: About half of what's available in the US from each of those brands.
➠ And that's about it in gun stores —
for the whole country....
(Peru is twice the size of Texas. How many gun stores does Texas have...? The interwebs tell me over 6.000 stores.)
Count your blessings!
Matthias