I have the rti priest 2 performance ... It started out as a 22 but its now a 30cal.. still trying to find tips and tricks to make these guns better.. right now I'm getting over 30 shots at 850-860fps only filling to 3500psi.. I do believe the reg gauge is wrong because I was told 170bar should get around 950fps and airing on the side of cautious I have not tried anything past 200bar till I get a second air gauge put in.. I'm still working out the grouping there not bad but could be better.. let me know what u have done to make things better