Of course there is no "smoothbore rifle" but it makes me thank that most of the field guns were the ones that Ownes signed for at Selma in June 1864.
Williamson, David "The 47th Indiana Volunteer Infantry: A Civil War History", (McFarland, 2012), Accessed 27 December 2012, http://books.google.com/books?id=ZprTBc5shLwC&pg=PA270&lpg=PA270&dq=%22owens+arkansas+battery%22&source=bl&ots=70MPkJQj8O&sig=w5oNRGym_bolU19WOyXKOJkIGrM&hl=en&sa=X&ei=og3dUIfILuLg2AXm5oCYDA&ved=0CFIQ6AEwBjgK#v=onepage&q=%22owens%20arkansas%20battery%22&f=false