Yep! Sam Fadala wrote a book called Black Powder Hunting. He recommends as a max load of one grain of powder for every grain of bullet weight up to .50ca.

So, a 177gr round ball would take 177gr powder. They use up to 200gr in Africa for big game. Bullets up to 600gr.

You think your inline had recoil!!

btw..These are all sidelocks.