IIRC CPHPs don't usually make much more energy than you're getting in those guns. It's been a long time since I ran them, but they never made as much power as JSBs Exacts in any of my Weihrauchs. If you are looking for power you might want to bronze brush the bore to clear the hard lead and try JSB 8.44s or 7.87s. It will take a hundred shots or more to reseason the barrel after a good brushing. Once seasoned the accuracy is typically better with the JSBs as well. It's up to you if you want to invest the time and money.Got tired of waiting for the Vac seal magic sizing so I pulled it out and sized it. Ran about 50 through it. Velocity with CPHP jumped to ave. 800fps 11.23 ft lb. Obviously a little harsher cycle without a dragging seal but I already have several R7/HW30 and HW55's. Not what I wanted the 50 for.
Good luck
Ron
Upvote 0