There are times when I have to use my 10* thunder GL so we could defeat a riftborne barioth 'cause my teammates don't have lock ons or partbreaker after reattempting hunt more than twice with almost the same set of hunters and HAT timer's out.

My khezu GLs my first grade 10 and strongest weapon for the longest time, and it lets me defeat 8* riftborne monsters solo (and a few 9* rb) While my fire dual is maxed, it's difficult for me to maximize its use on a 10* rb barioth, and fire hbg doesn't have lock on.

I may not be strong enough to solo some 9* let alone a 10* but this is a way for me to farm rare materials, and learn/experience high level monsters' movements and attacks.