I purchased a Beeman R7 about five years ago from Pyramid air, after shooting for about a month I decided to install a Vortek PG2 kit, when I first chronied gun after tune velocity with 7.87gr JSB Exacts was just under 600 fps not much more than stock velocity. I haven't checked velocity in a few years until today and velocity is now close to 660 fps with same pellet. Never thought velocity would climb this high after a few thousand rounds,. I also noticed that shot to shot consistency is 5 fps or less. I installed an old Beeman Blue Ribbon scope on gun that I had for years sitting in the box and at 25 yards the little R7 prints sub dime sized groups. I am thrilled with the performance of this little springer with the PG2 kit.I am a big time PCP shooter but will never give up my collection of Springer's and Theoben Gas rams.