My advice to you is: "DO NOT SHOOT that Gamemaster Jet"
If you do, you will never shoot anything else.
Jim hit the nail on the head when he said "MEGA SCORE".
In my opiniom (and many others) that is the finest, smoothest, fastest, most accurate bow you will ever shoot. And possibly the most beautiful.
Every artist has a masterpiece. The Gamemaster Jet is Jack Howards Masterpiece.
I also recommend that you only use strings made of Jack's string material. It is a stretch string and the bow was designed to be shot with these. Although Jack is no longer with us, Charlie Lamb has a supply of the string material and was authorized by Jack to make the Howard strings before Jack passed away. Charlie is a moderator here and you can contact him throught the forum.
GREAT FIND