The rear fun is making it a 17 fireball. Chop the barrel to 18 inches. Add a suppressor. Load it with 20 grain vmaxes @4100+. They will explode starlings in to feather puffs and small meat chunks. Recoil is pretty much about like a springer BB gun. But it’s varmint capable to 350+. My cz527 in 17 fireball is my all time favorite rifle to shoot. It’s retired most of my rimfire even.