Crosman pcp carbine unregulated

[Gibsonvair]

Spent some time shooting. From the chronograph, I know I am shooting around 822FPS or 21 ft/lbs. It seems to hold point of aim at around 18 MPa to around 15 MPa or twenty shots. Above or below that pressure it will impact low. Considering the 180cc vessel is rated for 30 MPa, I could really use a regulator at that power level. The crazy thing is that it only uses .25 MPa per shot, or 37 PSI. totally unscientific, but it looks like the point of aim doesn't have to change much between 25 and 35 yards, my typical squirrel and rabbit distances.