It is the opposite for me. The mount is initiated with the hands and arms, and short barrels have me mounting with less control..and usually faster and out of sync with the clay or Bird. Crossers need a lot of hip involvement..not so much with quartering or straightaway.
Addition:
I’ll take longer everyday, as long as the balance is there.
Let me correct that for you.
The mount is initiated with the front hand and arm. The trigger hand/arm is just along for the ride.
If anyone cares to argue that take it up with one of the greatest shotgun coaches ever Jack Mitchell.
