The arrow availble for purchase around here all have 4", off-set feathers. No shafts. So that's what I start with. Now that I have a new Bitzenburger with helical clamp, I bought some 4" shield cuts to get started.

Should have asked this question before I bought the 4" feathers, but any real world difference / affect to arrow flight out to say 30-yards between 4" and 5" feathers?