Trouble with 3622 and 362 LE accuracy

[Gibsonvair]

Those are decent groups. I know there's better, but from a practicality standpoint, that will work. Question,  after 15 shots have you checked to see what pressure the valve opens at? I've been filling to 1600-1800 and it seems even out the average of the  velocity. I still need to run a full string see what I get and possibly adjust the  hammer spring. Here's my sight in target. Group 1 is 11 shots with me moving the zero. Group 3 is 10 shots, with 8 in the hole. At 25 paces. I'm happy with how it shoots, but I would like to flatten out the shot curve

I have heard that restricting the transfer port and increasing the hammer spring tension will achieve what you want. Never tried it. 20 shots is my hunting number. After that, I just want more power and less than 4% deviation in velocity. At around 40 yards and under, depending on the pellet speed, this is acceptable due to point of impact shift based solely on velocity. Of course I will check with actual shots on a target. Simply going by my shot string, that would be shots 6 thru 26. I can estimate the pressures at 1850 down to 1350 based on 25 psi use per shot average. What I know is the shots are accurate enough for close range (15-20 yards) through out the entire 30 shot string and powerful enough to kill within that context. If I need to reach out more, it will have to be between shots 6 and 26. Because of the weight, accuracy and power, I think this will make a fine small game rifle and I have about $300 total: rifle, scope, adaptor and silencer.

[Mzq284]

Thank you guys for your thoughts, I'll try to shoot a string over the chrono this weekend.  I need cast some pellets, I'm out of my NOEs. Maybe I can do both this weekend,  that would be ideal. I'll report back if I find anything earth shattering