Ruger K77VT in .220 Swift. I love mine, and it shoots 1/4 MOA out of the box. You can load it up to 4400 fps with 40 grain bullets, but that tends to burn barrels, so I keep my loads at a conservative velocity of 4150. Beware, though, that you only have a few selections of factory rounds (all of which are excellent) but if you reload, you have the fastest, most potent .22 made. Every coyote I have shot was absolutely ANCHORED by 40 grain Nosler Ballistic tips. The .22-250 is more readily available, but cannot hold a match to the Swift (there are those that say the Swift is not that much faster, which they are right when considering factory loads). The barrel burning stories about the swift are not founded in truth in today's world. The round was developed in 1935, and metallurgy was not what it is today, so it had a reputation of a barrel burner. This is not true today. My Grandfather-in-law bought a Ruger M77MkII .220 Swift in the mid 1960's when he was taking over the ranch from his father, and that thing still shoots better than most rifles I have seen. I definitely recommend the Swift as a round.
The K77VT is a heavy barreled target/varmint rifle. Beautiful with it's brown laminated stock with the wide beavertail forend, totally free-floated barrel, and two stage target trigger (the best factory trigger I have ever felt). I would not recomment it for a stalking rifle, but you cannot buy a more accurate rifle out of the box. I love mine.