Welcome to the board!
Yeah, I can see where 200 yds with a 22 mag could start a healthy conversation. What size groups are you getting with that load at 200 and what are you shooting them out of?
I would think that most 22 mag bullets at that distance would shoot groups the size of a lawnmower but don't know that for sure! LOL!!! Never tired it!
I have a Volquartsen switch barrel in .17 HMR and .22 mag. the .22 mag will shoot 1/2 to 3/4 inch 10-shot groups at 50 yds, some better with every load made. However, when you move back to 100 yds it starts growing really fast. Only the new Rem 33gr load is good at 100. However, I can't see shooting a yote at that distance with a .22 mag. Just can't see it making good humane kills.