The best single target ranger is one with a wolf as pet and Persistence as main weapon, high MIG but rel. low INT, bow abilites and ranged talents (WF Peasant, Driving Flight, Twinned Arrows, Marksman, Stunning Shots...) and damage focus on the pet (Merciless + Vicious Companion, Predator's Sense, Takedown/Brutal Takedown).
Followed by a Stormcaller Ranger who has a bit more of an CC- and support aspect and can be used to lower enemies' shock DR for a storm druid for example.
Also melee ranger with Tidefall or Drawn in Spring and Shod-in-Faith boots is still not bad (see "Riptide" build for details).
Or one with a marking + coordinating weapon (Cladhaliath can be made in such a fashion): +10 ACC for the pet, +4 ACC and +25% dmg for you if you attack the same target. Those builds also work well with the flanking bonus from survival and a fitting item that also gives a bonus for flanking (Crossed Patch, Stalking Boots, Vengiatta Rugia...). A critting pet with Brutal Takedown and a ranger who not only gets crit bonuses but also up to +70% dmg bonus from flanking (coordinating+25, +30% from flanking, +15% from Apprentice's Sneak Attack) pulverize every enemy in seconds.
Silver Flash with a ranger can be pretty devastating because of the many procs of Divine Mark and the blind debuff. With Powder Burns it's pretty ouch in an AoE but watch out: friendly fire!
If Fulvano's Blunderbuss worked (I mean the charm proc - for me it doesn't) it would be an awesome weapon for a ranger as well (because of driving flight increasing the proc chance of charm).
Edited by Boeroer, 26 April 2018 - 11:30 PM.