Experiment I'm not able to perform?
Ok, lets see if I can word this right.
If you took a revolver with 3 long barrel AND a semi auto with same length barrel put both side by side secured in a shooting vice secure table where neither would move (or if vice had recoil movement system that brings back exactly where it started) set targets out at 50 feet fired 3 rounds from each what kind of groups would you expect from each?
Im wondering if the revolver would be more consistent due to the semi-autos barrel having some movement with the casing ejection slide movement for each shot.
If caliber makes a difference say revolver .38 and the semi-auto 9mm.