Squirrels in my area hate 177, 20, 22, 25, I know as a fact. Then we can"t mention 22 LR or 22mag RF? I still am a 20 and 25 caliber, flag waving fan. I enjoy both in springers and 25 in , shhhhh, (PCP), but would like a dedicated 20 PCP besides my MAC LD pistol/carbine in 20 also.