I was quite good at physics.
1. Does a full choke shotgun have more "felt recoil" than the same shotgun and load, with a cylinder choke? Does the squeezing down process increase felt recoil?
It's probably as well at this point to distinguish between the measurable recoil and "felt" recoil. This first can be calculated from velocity/ mass equations and measured in accelerometers, the latter is highly subjective and has umpteen variables.
There will be a slight increase of velocity through a tight choke over a cylinder bore, but its effect on any recoil would be I think negligible; the greatest acceleration of the shot load is accomplished in the first couple of inches of travel and that's what initiates and determines the recoil of the gun. By the time the load reaches the choke, its all over.
2. Using the same shotgun and load, would the muzzle velocity be different between a full choke vs. a cylinder choke? Is there an effect due to the squuezing down?
A bit, as above.
3. Similarly, would a new overbore shotgun (.740") have less felt recoil than an older tight bore (.727")? Any velocity difference?
Not much. Again the velocity of the load is developed in the first couple of inches of travel; I don't think the downstream bore size will have any influence.
The only influence a wad could have is in its weight; the heavier it is the greater its contribution to the mass component of the equation. The difference in obturation between a felt wad and a plastic one (should it exist, which I doubt) again would not appreciably influence recoil since it would not affect the initial acceleration.
Eug
