although not for long range I woulod not outright dismiss .177 guns in the 400 fps range as some do... I have experience and successfull experience with 400 fps airpistols and vermin. Years of experience and success actually. Some here are predjudiced against the .177 to begin with it seems. I would not shoot anywhere near long range but it will work if you are accurate andpracticed. To be less than accurate would not be fair to the game though.