RE: 308 or 338
For 1000yrd’s on varmints I would recommend a 6.5/284 or a 6.5rem Magnum you don’t want a lot of recoil when you’re shooting way out there and you want a very very good scope. One of those should work well on medium game also but for big game a 30/378 might be the go but I would keep shots to 600yrd and aim very carefully.