Probably under 200 yards. I have shot further coyotes with my 17's, but I rarely shoot any over 200. My last outing with the 20 Practical and the 35 Bergers, some were a bit messy and some were very fur friendly. about 50/50. But those Bergers and a hot load of benchmark is a very accurate load in my rifle.
I have been tempted to try the 32 Sierra BK's from another members suggestion.