If everybody did that, Dave could close this thing down.
There have been 100 response threads with questions more trivial than this one.
The answer is... as discussed in the painful series of discussions about a mystery Grulla...
'Inherent inaccuracy' is a poor term, and probably would more apply to double rifles, or for that matter a P-51. The two barrels can only intersect at one point, or be parallel to each other. There is no other solution, other than divergence which we've determined to be undesirable.
SxS shotguns and double rifles must compensate for the fact that the bores do not pass through the vertical axis of the firearm.
They do so by converging the barrels ever so slightly at the muzzle, so that during 'barrel time' the recoil displaces the fired barrel to parallel with the original sight line.
There are several factors that can affect the final outcome.
A properly regulated double shotgun, firing the load it was regulated for, by a person whom it fits, has zero 'inherent inaccuracy'. It shoots both barrels where pointed.
