The 1000 Yard range is only open for their class or their own internal use.Long range? you’ll need to go up to NH. I think Sig has a 1k yard range. However, if you are okay with mid-range, you could get a membership with Reading Rifle and Revolver north of Boston. They have a 600 yard range.
Ridgeline, north of the white mountains in NH, hosts a PRS match that seems pretty sweet once you get some training and practice. They also have long range courses.
Reading and Pelham have a 600 yard range but both require certification to use it.