Here is my brush gun. Cabela's / Investarms Sporterized Hawken Hunter Carbine,.58 Cal, 22 inch barrel, 1:48" twist rate! I LOVE this rifle, it shoots pretty dog gone good too with either Lee R.E.A.L bullets or patched round ball.
Here is Cabela's link with a better pic, my picture does the rifle NO justice, it really is beautiful. I don't think Cabela's will carry them any more, and the .58 cal. was discontinued long before the .50 and .54