Boy, I don't know, the 270 is a lot of gun for a fox, it's a lot of gun for coyote too. I've only killed two coyote with 270, one a broadside shot at about 100 yds with 150 Hornady blew an 8" hole in the far side, not fur friendly. A 22 Hornet might be good or 17 Rem. Or a rimfire.