FWIW ... on smoothies, compare the width of the breech area to that at the muzzle, like my 65-cal is ~1-1/4” ... stepped/tapering down to ~7/8”.
If I sight it along the barrel, like shotguns are pointed, I’ll be looking and shooting DOWNHILL. So I envision a pencil placed across the breech and out the base of the front sight or bayonet lug ”˜on top of the pencil’, as visualized.
For practice, I have even taped a short dowel in such position and just out a black Sharpie marker line as my center - to give me an ”˜aiming’ point. Such practice, even if just cheeking the arm a few times (start w/ your eyes closed) in your basement 2-3x or more time per week ... will build your position and muscle memory.
Using this visualization and exercise, I’ve gotten people in the bullseye, never mind on target, who otherwise struggled when shootin’ smoothies with roundball loads.
Try it!