If you ever get to look at a 45+ caliber side by side double rifle, notice the muzzle centers are closer together than the chamber centers. Their LOF axes cross about 20 to 30 yards down range on the LOS axis. Like hand guns, their front sight point is higher above the bore axis than the rear sight because the barrels angle up from recoil during barrel time.
This is done so that both bullets essentially hit the same place at a specified (short) range. Delivering heavily constructed bullets to the same spot, from either barrel, rapidly, at a range where a couple dozen yards was on the long end.
Classic "express" sights are not made for precision, but for speed. When your world is now defined by the front end of a very upset elephant or buffalo, moving at you at speed, MOA is irrelevant, fractions of a second are vital.
Purpose built tool that excels at a specific job. Not quite the same as a general purpose sporter rifle, and quite some ways away from a target gun.
As far as my personal bench rest technique? I shoot from my hands. Testing loads or sighting in, or just having fun, I hold the gun in my hands, not on the bags. My hand (rifle) or forearms (handgun) are on the bag, supporting ME, not the gun. I do this so my bench results will be a little closer to those times when I don't have a bench to lean on.
DO I get the smallest groups possible? probably not. I'm including myself as part of the equation. Because the rest of my shooting has only myself as the rest, I figure what the rifle can do, without "me" is not terribly relevant.
No, I don't play the games where the goal is the smallest groups. If you do, fine, you should probably do something different than what I do.