Id stay away from Blue Mt all together. Missoula has an extremely active outdoor community and many are not keen on shooting. Another place to avoid is the Rattlesnake area, there are just too many people. There are a lot of better places to go. Miller creek is a good place, but you gotta go several miles(past the Spangler ranch) before you get to forest service. The Beavertail area has some decent squirrel and gopger gettin areas. Beavertail is about 30 miles East of town off of I-90. There are some decent areas up along the Blackfoot and Gold Creek. You can go up deer creek and take one of the logging loads to the East side of the road. I wouldnt shoot in the pattee canyon area. All in all, I would say Miller Creek will offer the closest hassle free area to shoot. Rock Creek also has some decent area for shootin and plinkin. The bottom line, stay away from Missoula's recreation areas if your fixn to shoot. The Deep creek and deer creek ranges should be visited as often as possible.