Oddity of the Week

Oddity from Action Comics Vol 1 255 (1959)

This is from a Congorilla comic story, and being from 1959, it fills the gap of yeti stories that were coming out annually at the time (see bottom of this post for list). I would LOVE to learn more about this story, but can't find anything online. What's the plot? Why does he have a barrel?

Note to self: Please add "UUGHHH!" to the Everything Yeti Has Ever Said page.