Note this thread was titled "Double Rifle Sacrilege". The reference to shotguns was just added context. Of course a twin triggered side by side shotgun is better for non structured down the line artificial shoots.

My sacrilege was discussing how a single bullet flight works from a double rifle,and accuracy, trajectory etc. An under and over vs a side by side. Shot patterns are easy in comparison.

A bullet impact higher or lower to the line of sight is entaly easier to mentally compensate for, than bullet impacts to left or right. Because we are more used to it for trajectory impact changes already.

Of course the sight picture over a side by side is more natural and better.