I see this thread is ancient..
But this is why I am posting.. I have been away from the sport for over 7 years.. I have some old Hatsans from 2013 and 2014..
One is a Galatian in. 25..i see these guns did not hold value very well.. I bought mine as a Hatsan refurbished about 300 below retail back then..
Then I had to send it back to them for some issues..from then on.. it has been a nice smooth action unit and pretty accurate out to 60 yards.
This morning I had a crazy notion to see what it would take or if it was feasible to turn it into semiautomatic. You know.. since it was just sleeping in its case anyway.
Any thoughts from you guys..
Be Well All
You might be better served asking about the possibilities in the PCP/Darkside Gate. I have one myself I bought back in 2016, although mine is the III QE version and like yours, in .25.
Only issues I've had in all that time was replacing a very small o-ring on the inside of the valve. Never looked into anything Semi auto, so no idea if the older Galatians can be converted