Was searching out a Mobil Choke (Beretta) I wanted for use in my Benelli and I came across what they refered to as a Spreader Choke. What is it and what is the intention? I have and use cylinder tubes but never took notice of this term given to a tube. Is it a tube more open than cylinder? A negative constriction? Euro Skeet? Any thoughts are greatly appreciated, thanks Spank.