What is it you want your ranged weapon Fighter to do?
Fire a bunch of arrows into your enemies? Rangers can do that.
Shoot your enemies so hard they stagger back a space? Rangers can do that.
Cause ongoing damage with your bow? Rangers can do that.
Be called a Fighter and have ranged weapon powers? Fighter/Rangers can do that.
Be called a Fighter and have only ranged weapon powers? Okay, there you're out of luck.
Have a reliable power that does 7[W] damage at a range of 40 squares? Can't do that either.
Have the hit points & healing surges of a Fighter and the ranged damage output of a Ranger? Can't do that, and I for one am glad.
Give me your character's strategy and I'll happily try to set up a build for you. Note that "kills things at range", "heals people while staying way the heck away from enemies", and "stabs the first thing he sees until it stops moving, then does it again and again until there's no baddies left" are strategies, while "is a member of the Fighter class and primarily uses a hand crossbow" isn't.