I had not decided on what to do with the .22. For now, I decided to try a few things. Simply cranking up the hammer spring really didn't give me much of a power increase. I had thought about cranking up the regulator, but decided to try it unregulated and see what kind of power I could get. I have been shooting 13.4gr jumbo rs and regulated was getting about 630fps for 30 shots. Unregulated I am getting 720fps avg for 18 shots.
You cannot simply pull the regulator on this gun, so I basically rearranged the bellville washers and now, the regulator just flows air. No regulation. I did increase the valve spring preload and that helped flatten out the unregged shot string. It did take alot of hammer energy to get the velocity up as well.
I am pretty sure that opening up all the internal air pathways could give more power gains, but I am happy for now. The initial reason for this pistol was for close range raccoon control. The current power level is about were my Prod is at and it has worked good for close range head shots.
Later this morning I will test accuracy.
You cannot simply pull the regulator on this gun, so I basically rearranged the bellville washers and now, the regulator just flows air. No regulation. I did increase the valve spring preload and that helped flatten out the unregged shot string. It did take alot of hammer energy to get the velocity up as well.
I am pretty sure that opening up all the internal air pathways could give more power gains, but I am happy for now. The initial reason for this pistol was for close range raccoon control. The current power level is about were my Prod is at and it has worked good for close range head shots.
Later this morning I will test accuracy.
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