They sound like the Federal Top Gun hull. They have a seperate fibre basewad, unlike the Federal Gold medal hull, which is a one piece. Load data for the Gold Medal can be used in the Top Gun hull. You won't want to reload these to many times as there is rumour the basewad can eventually be shot out. They are also bad if they get wet after being shot. If you found them after a bad rain, I would leave them to dry for quite a while before reloading them.
If you were lucky enough to have found some Gold Medals, load to your hearts content, they are a premium reloadable hull. :-)
