Mine is also a Gen 2. I thought it may just be cold shooter so the last while I have been taking multiple guns to the range and shooting the RPR last. Still noticing a slight drop in groups after 20 or so rounds. Maybe its just me getting warmed up to the gun itself. It is my only "chassis" rifle so it is the most different of them all.This is pretty interesting as I have the exact same experience with my Gen 2.