I have been secretly playing with the idea of building a dedicated coyote/fox rifle for a while in the back of my mind. .204 ruger what y'all think? I was thinking maybe going tikka heavy barrel. I want something with range a tack driver and i want speed! This idea in my head started with a .17rem and now that i thought long and hard i have convinced myself on the .204. Is there a con. To this caliber? Optic suggestion?