RE: 3in vs. 3.5in
I think my hunting buddy put it best when he said 3.5 inch guns are nice for turkey hunting, but don't give you a tremendous advantage over a 3 inch gun. However the real reason for a 3.5 inch is for knockin down big Canadian geese, since I hunt both I own the 3.5 inch gun. But 3 inch should service you fine for turkey hunting, all comes down to how well you call and not fidgit.