The name Rawbone of Cape Town struck a chord with me, just couldn't remember where at first. Finally I remembered, many many years ago I saw a 4 gauge double muzzleloading rifle with that name on it. I don't recall any details about it now but that name Rawbone just sort of stuck in my memory.
Turner Kirkland of Dixie Gunworks had it, has been around 45 years ago that I saw it. I seem to recall he carried it on Safari & shot an Elephant with it.

Miller/TN
I Didn't Say Everything I Said, Yogi Berra