I am not a member of Musketaquid, but I've visited there several times for matches, camping, fishing, ice fishing, etc. It is indeed a very nice club with a gorgeous clubhouse. They have a very nice skeet range, a small rifle/pistol shooting range, and a very nice indoor range. They often host very good dinners. They have a beautiful brook that runs through the property and with two dams, they have two nice fishing ponds.
As I understand it, they have a membership limit of 100. Prospective new members connect with them and spend some time attending and working at various events. Eventually, somebody leaves the club and the membership votes on one of the new folks. Hopefully an honest-to-gosh member can chime in here.