People in VT's group, don't read this.
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I'm doing this very thing. Ranger 4/Sniper Scout 2. The lack of movement afterwards is a pain, I know If you're interested, I'll show you what I've got, but I probably don't know any better than you.

I'm going to start an archery thread in Homebrew sometime soon, if anyone wants to contribute to it. A prestige class and a few feats. The lack of decent archery stuff in D&D is ludicrious