It should make no difference at all .Shotgun barrels are not "regulated " as would be a double rifle . They are put together and they shoot where they shoot . In shotguns regulation is the boring of chokes to give a set pattern with a set cartridge at a set distance . Thats all .

If the average 28" 12 bore side by side were to be regulated as many seem to think then the muzzle ends would be about 5/16" to 3/8" apart to give overlapping patterns at 30 yards

It can be calculated mathematically to give the muzzle centers compared with the rear centers that would be needed to achieve this and shotguns were never been made that way .

Last edited by gunman; 04/20/19 11:01 AM.