So I got this used .22 Bullboss. Really good condition, but a real air hog with a pretty steep curve. I installed a Hatsan regulator and something odd happened. I started with the spring adjustment at mid point and cphp 14.3 chrony’d about 763fps. I ran the adjustment out-ccw-2 turns and the velocity DROPPED by about 100fps. Ended up adjusting all the way in and finally got to 833.
Would one of you tuning guru’s out there clue me as to why the adjustment works backwards with the reg installed?
Would one of you tuning guru’s out there clue me as to why the adjustment works backwards with the reg installed?