seattle ranges
WSI will let members shoot rifles and shotguns in their training bay. They have a friday night rifle league where anyone can shoot the course of fire with their rifle. Wade's also requires you to be a member to fire rifles the last time I was there. Their indoor rifle league has folded. Things may have changed. They both have decent ventilation. The range is nicer (better paint, target hangers) at Wades, the store side of WSI is open longer.
As for outdoor ranges, there are Interlake, Kennmore, Renton, and Snoqualmie valley rifle club. Interlake, Kennmore, and Renton all belong to the "load one, shoot one" school of thought when it comes to rifles and will allow non-members to shoot for a slightly higher fee than for members. They also have pistol ranges.
Skorzeny, where in Seattle will you be located? All these ranges will be less the 45 minutes away from downtown under low traffic conditions.
Washington as a whole is pretty gun friendly. The I-5 corridor is less friendly since it has a higher population density and keeps things from being perfect. The lack of privately owned NFA items like SBS's, SBR's, and full autos is a drag, and the law that allows you to possess a suppressor but not use it (in the state) is down right silly.