Pressure is the same with any choke before payload reaches the end of barrel... But at the speed the payload is already moving, you could never sense that little change as rearward recoil...
If anything, you would feel it tug the gun forward... The slug would hit that choke at 1,300 FPS (inches per millisecond) and try to pull the gun forward as inertia of the payload is headed forward...
Brent
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