If you actually go to the link and read the use for the wear guages ,you will see that they are made onlyfor military weapons.Military weapons are exposed to entirely different conditions than hunting rifles such as steel jacket ammunition or incendiary rounds or extreme abuse due to combat conditions.Modern sportingammunition and normal conditions are an entirely different situation than military usage,so the wear conditions will be very different as well.

However to see some other peoples opinions on the subject ,I startedtwo threads ontwo sites thatare more dedicated to shooting and reloading.Hereare the links so you can see what others have to say on the matter.

http://forums.accuratereloading.com/groupee/forums/a/tpc/f/9411043/m/170100593

http://www.24hourcampfire.com/ubbthreads/showflat.php/Cat/0/Number/687135/an/0/page/0/gonew/1#UNREAD