Splinter Weapon + Barrage/Volley Combo?

Well, as I said I ran it as a ranger primary. I wasn't using brutal at all, I split between expertise/wilderness/marksman. Now, you definitely want max wilderness, thats the breakpoint for 3 seconds of burning, meaning an extra 14 damage over r11. Rest of points would be best split between communing and marksman. Not having expertise hurts your energy a bit, just make sure you are ready to recast your buffs as soon as they go off, apply poison is going to be doing half the damage. Swap to a zealous bow when firing off Incendiary Arrows, it helps recoup most of the energy.

The skill set I would use is :
[Incendiary Arrows] AoE degen obviously
[distracting shot] Every one using ranger should have this
[Apply Poison] Moar degen
[Brutal Weapon] Decent damage buff
[Serpents Quickness] I like to use Incendiary Arrows. A lot.
[Natural Stride] Keeping your distance is a good idea.
[Pain] Noone in low level PvP goes after spirits. If pain is left alive the whole time, it does 1000 armor ignoring damage. For 5 energy. Yeah.
[Troll Unguent] Best self heal you can get easily. Don't want to be degened to death yourself do you?

Remember that your main priority is just to degen the hell out of anyone. Aim for NPC's first and players who either don't have self heals or are already under pressure second. The build is very useful in FA/JQ, a little less so in AB because its main strength is winning a long, extended battle with a large number of players (ie, what you shouldn't be doing there). It is nice in AB just to spray enemy teams with degen from longbow range where they can't reach you though.

Basically the only difference between your rt/r and my r should be that you keep brutal weapon up, while I have extra energy to spam pin down where you really can't do that. Pin down is really nice in AB but the builds would perform about equal in FA/JQ.

The spirit could be subbed for Savage shot or a +damage skill like Hunter's Shot or Sloth Hunter's Shot.