Believe it or not one of the very best techniques is dry firing your actual weapon. Shooting off sticks takes practice and almost all of the muscle memory, breathing control, trigger release, and movement anticipation can be learned in your basement with your .375/.300/ or whatever. Army and particularly USMC marksmanship training entails hours of dry firing. I still do it. Particularly with a new rifle. It is important to follow through each shot and call it (where it would have hit). Do a few hundred serious shots like that over a couple of weeks and you will be totally comfortable with the sticks (and a better shot) before you hit the range.
One caveat - don't do it with a double. Nearly all break action rifles react badly to being dry fired. Not an issue with a bolt gun.
Also, triple check your rifle isn't loaded!
One caveat - don't do it with a double. Nearly all break action rifles react badly to being dry fired. Not an issue with a bolt gun.
Also, triple check your rifle isn't loaded!