Velocity: distinct shells feature diverse velocities. Extra velocity indicates the shot has to be propelled speedier, which commonly usually means extra recoil. Choke: choke is a unique discussion than shotgun shells, but what choke you might be making use of should really sync with whichever projectiles you are taking pictures. https://highimpactrounds.com/product/mossberg-590a1-spx-12-ga-20in-8rd/