Benelli youth Monty 20ga with stock and forearm removed and replaced with bicycle grips. At 4 pounds, 7 ounces, my hunting partners call it the "pogo stick". It's like carrying my first Daisy BB gun.
I grew up(beginning at age 11) sling'n lead at ruffies and found no time to shoulder a gun. When the recoiling stock(now reduced to a stub) glides "naturally" under my armpit, I feel most comfortable. Always start at port-arms, then raise the pipe about 3/4, just enough to instinctively jab, stab, or poke at the flush. Works for me but hard to explain or teach. I never notice the gun barrel or its relationship to the target. It's an instinctive "flinch".
I hate trap, skeet, and sporting clays. Do terrible at them. Gotta have the sound(and sight) of a flush for igniting the reactor into a flinching motion. There is no substitute for me.
I do poorly on birds that I