You need the 107 Sierra TMK, we have killed 32 coyotes with them since the 1st of the year here in Michigan using mostly a 6.5 Grendel at 2680 fps and they have performed very good but not fur friendly, they usually leave about a 1"-1 1/2" exit hole. We have taken 3 of them using a 6.5 Creedmoor at just shy of 3100 fps with the same results.