Nope.
I bet he picks up a gun and mounts it and knows by feel whether he likes it or not.
Of course he is taking a non numerical measurement of those values and comparing it to his usual gun.
Just like Michael McIntosh did every time I shot with him. From a competition O/U, to a cast-on Dickson, to a custom Fox to what ever anyone handed him. Within a few shots he was breaking birds with each gun.
That makes him extraordinarily adaptable. Most shooters aren't so gifted and need all the help they can get.I wonder how the MOI measurer shoots with a variety of different guns.
It doesn't. How does anyone's scale or balance fulcrum or yard stick shoot with a variety of guns? Nonsense aside, these are tools that yield facts about guns - not more, not less. Also, I wonder about the OP and how three different barrel configuration could possibly balance at the same point? at three different weights? Highly unlikely...
As stated above, a matter of science. Having all three with the same MOI is also possible, but trickier yet.BTW: I was never condescending...