I have an old POS $40 4x fixed mag Simmons from the early 80s on my 10/22 and have shot squirrels, gophers, rabbits, paper and infidel clay targets out to 100 yds with it. I'm a huge advocate for the cry once principle, but in this case and for what you are using it for, just put a basic $50 4x on it and shoot the piss out of it. You will be fine.