Doesn’t this make the definition and measurement of choke as the constriction from the actual barrel I.D. now fairly meaningless? Wouldn’t it make more sense now to re-define the choke size on any 12 gauge barrel as the inside diameter of the last 1 ½ - 2 “ of barrel, and wouldn’t this be a better predictor of what to expect in pattern? It seems hard to believe that the same amount of diameter reduction on two widely differing barrel diameters would both meet the practical desire of specified choke size which is percentage of pellets within the measuring circle for that shot load.
No, it is not meaningless. The I.D. of the last 1-2 inches of a barrel
IS meaningless, as far as predicting patterns, if you don't know the bore diameter. The same amount of diameter reduction doesn't even mean two barrels of identical bore size will pattern the same, but it IS a pretty darn good predictor.
And Geo., please don't go down that road called "Choke Is Obsolete".
SRH
