Yeah Raven, I use a slate and a glass call for the fighting purr alot, It won't hurt the call or the striker. At times the fighting purr is one of the deadliest calls there is, one thing for sure you can really get them stirred up by using a FP.

THE NRA, WHERE WOULD YOU AS A GUN-OWNER BE WITHOUT THEM.
GUN-OWNERS, UNITED WE STAND DIVIDED WE FALL.