RE: Paper Tuning
If you have a garage or basement, (...or living room with an understanding wife...which I don't have so it's the garage for me), a couple lengths of nylon cord about 2 ft. and two old arrows, and some old newspaper or any paper for that matter andyou're in business.
Tack up each cord to the ceiling. Tie a loop in the bottom end of each cord. Slide one shaft through the loops. Tape one end of the newspaper to that shaft. Tape the other end of the newspaper to the other shaft. You'll have plenty of weight from the bottom shaft hanging to hold the paper in place. Put your target behind the paper about 2 ft. Elevate your target on a garbage can (so you don't shoot your wall) and you're good to go.
Been doing this for 20 years.
If you don't want to use newspaper just put a roll of any paper, butcher/freezer/christmas wrapping paper, you name it. It works