I've had this great Buffalo Gun socked away in my collection for the past dozen or so years. I can't remember the last time I saw one of these Heavy Barrel true Buffalo Rifles for sale. This rifle comes with a factory letter stating it was shipped to B. Kittredge & Co., Cincinnati, Ohio Jan.15th,1878 in.45 cal. with a weight of 13 lbs. 5 ou. Most if not all of the Heavy barrel Sharps Buffalo Rifles that were shipped to Kittredge in this time period were actually for Walter Cooper , Bozeman, M.T . Sharps had cut off W. Coopers line of credit so he and Kittredge worked out a deal. At the barrel breech the width is 1 3/8" across. The rifle is really great and has a mint shiny bore with sharp rifling . The gun also has a provision for a tang sight .