Best airgun for coyotes? K1?

I’ve read articles about the K1 being great for taking out coyotes and watched videos saying its a go to gun for doing so. What power setting would be used? What slug would would be most effevtive? What distance could cyotes be take out at? Considering a K1 purchas, trying to learn as much as i can before making the purchas.
That's gonna depend on the size of your magazine chambers. Typically in .25 it needs to be .254 size slugs, in .22 it could be .221, .219, .223 etc. As not all mags are made equal, but you'll just want to use a hard, and heavy slug. The K1 can easily make power, I mean almost 100fpe in .25 and close to 80 in .22