RE: Turkey Choke Constrictions?
Campo, in general terms, yes, asmaller diameter chokewill throw a tighter pattern, i.e. a full choke is more constriction thana improved cylinder choke and will throw a much tighter patter.
BUT you are talking turkey full chokes and that'slittle more complicated. There is a limiton choke constriction for each gun, that is, once you go beyond a certain constriction the pattern doesnt get any smaller, it usually gets larger and more uneven. Most of the turkey chokes on the market today are all in the vicinity of thislimit. Through testing different choke constrictions and even different shotgun loadsyou can find the constriction that gives your indiviual gun the best pattern. Your gun may shoot a terrible pattern with the .670, but with a .680 your punching hole at 50 yards.
The simple answer is take your current choke and buy a couple new ones, some more and some less constricted, and go shooting. Good luck and hope this clears things up.