I'm looking to buy a quiver with the deflex bracket for my Thunderchild . I was wondering if grizzly broadheads would fit in a medium hood

With four they will fit fine, might be getting tight with five. I've had both the medium and large hood and prefer the large, for what it is worth. They are great quivers no matter what you select!

I have a medium hood BJ quiver. Four Grizzly Kodiaks and a judo fit just fine.