You need to practice shooting more so your group will tighten up. Sounds as if you have a combination of no breath control (up-down shots) flinching (shots to the right) and bucking the shot ( throwing your shoulder into the rifle as you pull the trigger)
That is usually caused by trying to be Mr. Macho shooting a gun that is kicking your ass and not having the ass to take the recoil. Get a smaller caliber and work out your bad habits.