Colt SAA & Bisley Chamberings And Ammunition Colonel Robert D. Whittington III Ordnance Corps U.S. Army WSO-26-9 US$ 25.00 Pref. Cust. Discount 0% A monograph containing information on Colt SAA & Bisley chamberings, and types of ammunition. 8 1/2 X 11 photocopied pamphlet, stapled top left corner, 21pp.