im writing from a far far away country and please excuse my bad english.
its really hard to find answers for my special questions. i searched with google hours after hours and some search results ended up in this forum!
i got a really nice looking SPA M10 in 5.5 and installed a huma regulator. its set to 50 bars - i know its very low but its not allowed to hunt here with air guns and im just doing target shooting up to ~50 yards / 50meters
my results with a chrony 230m/s or 750 fps with 25 joule or 18 FPE
thats really nice and im ok with that BUT the gun is nealy as loud as beforce with NO Regulator. w/o reg it did 55 Joule or 40 FPE
i got some experience with my SPA PP700W (also with a huma reg.) and i figured out how to match reg. pressure with hammer force / spring tension. on this gun you got very easy access to the hammerspring and its fully adjustable.
can you guys give me some hints which next steps on the m10 could work or are just total bullshit ? i dont want to drill holes in the hammer for lower weight and after that nothing changed... you know what i mean ?
i read that are some guys out in SA who can tune the gun to my specific suggenstions... but i cant send the gun to SA