FX FX Dreamline

this is my first post. I am thinking of purchasing an FX Dreamline compact tactical for squirrels in a residential area. Do you think a 22 with 15 gr would be more safe than a 25 cal? I purchased an Impact mk3 in 30 cal as an all around squirrel and larger varmint air rifle at the advice of a friend but it is way to powerful and unsafe to shoot in my location. Maximum distance would be around 25yds. Going to try and sell the impact I believe. Thanks in advance
Did you try to detune your M3 then you wouldn't have to buy a new rifle?