As far as I know in .25 is comes doing 45fpe, this I know firsthand as I just bought one from my buddy and had my hands on it first. Through reading several posts, I have found that without doing any regulator replacements, for the planum, one or doing any kind of crazy modifications, you can get as much as fifty five foot pounds for about a magazine. I can only assume that the .22 can put out 42fpe rather easily.
From experience knowing how well edgar gun barrels shoot slugs and pellets, my next rifle will likely be a compact .177
This U2 600mm .177 is great, and can make 40fpe 20gr going 953fps.
But it's a little for shooting mostly from inside the car. Tons of shots though, I was getting about 70-80shots shooting 16gr at 970fps
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