Jason,
I spoke with Fed a few yrs ago on the Gold Medal paper Extra-lite. They were somewhat evasive. I would simply send five shells to Tom Armbrust (sp?) who will charge $5 a shot and you'll have specific data.

Another option is to purchase one of these.
http://www.shootingsoftware.com/pressure.htm
I have one and have been very satisfied with it until I got a Vista OS computer. Vista is a problem with their s/w.

Last edited by Chuck H; 09/28/07 12:46 AM.