Last week I was shooting my Prophet (full size) and noticed something sounded a bit off.. I soon noticed my reg would climb from 140 bar to 160 in a heartbeat.. I adjusted it some doing some dry fires and same thing... reg pressure would fly up fast! I got to be a bit concerned about it so I degassed it.. later that night I just ordered a new reg but just the standard reg set to 145bar. Today it came in so I installed it. Set up the chrony and proceeded to adjust the hammer spring.. it would max out at 974fps (25.4gr, 22cal) I backed it down to 942fps.. reviewing the shot string on the chrony the standard reg is a very consistent reg.. I like it