Brocock Bantam .22 hard at work

Another good day at one of my permissions
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"Renegade_626"How do you like your Bantam so far? i was thinking of getting a .25 cal version but i heard that it is underpowered compared to what a .25 caliber rifle should be? is the .22 cal a better option?
I bought it for my wife because it is light and small and super accurate. Puts out about 28 fpe (so in .25 it will be under powered) Shooting jsb 18.13