On a brand new character with a flat +6 AB with a Longbow, I toggle Rapid Shot mode on and it drops to +4, as it should. When actually firing on any target regardless of distance however, the combat log shows I'm only getting a +2 AB to hit. This is also with Point Blank Shot, so close proximity shouldn't be having an effect. I might be missing terribly obvious, but I can't think of anything that would explain the missing +2 AB.