If you are going to use the .204 on coyote DO NOT use Sierra bullets. I hit 4 in 1 day and never got a 1 of them. I knocked 1 of them down hard 3 time and he still got away. I hit 1 with the .204 and then ran over him with my truck, he also got away. I called Sierra and they said their bullets were for lite varments and not for coyote. I have never shot a coyote with the Hornady bullets, and I know that they are alittle thicker jacketed, but from what I`ve seen on groundhogs, I don`t think that they are tough enough eather. From what I`m hearing the 35 gn. Bergers are the choice of coyote hunters useing the .204.