I Think I Found My M3’s Sweet Spot

Tune tune tune - tweak tweak tweak. We all know every pcp is different. I like my M3 because I am a tinkerer and shoot spinners and holes in paper. I shoot into a safe area behind my workshop so I can sit in an air conditioned or heated area, enjoy my favorite beverage and savor being retired. Here’s my latest tune which I am happy with. Photos below show 1/4” groups at 65 yards. I don’t know how to calculate MOA but I think this is sub MOA. I hope you are all enjoying airguns and this group as much as I am!
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Impact M3 - 600mm, .25 cal.
JSB 33.95 grain Exact King Heavy
1st reg 160
2nd reg 120
Valve 4
Macro 16
Micro 3.5
ES 4
SD 1.7
Avg fps 869