which constriction

[knightrider]

just off the wall which constriction would be best for the moss 500 with 28 in barrel a 660 or 665 gonna try the magblends first then the turkey thug 6. thanks

[Deputy 14]

I would try the 660 first but it really depends what choke you plan to shoot.

[ILIKEHEVI-13]

That's a matter of not much difference between the two.  I would say it will vary from choke manufacturer and how the internals are from each choke vs the other manufacturers will come into play to be more on how each choke will shoot vs the constriction size.