I don't think I need to. Those shown in the link you posted are very good.What you should do is post picture what a Palma 308 rifle look like
I thnk a lot of F-class folks use their NRA "any rifle" or "match rifle" to compete. They're stocked much like Palma rifles as well as a lot of F-class ones as well as being single shot ones except for the match rifles that need a 5-round magazine of somr sort.