During the early 1980's, a then co-worker told me that he had bought or traded for a Ruger .357 Blackhawk while serving as a rifleman in a combat infantry unit in Viet Nam. After a month or so, he sold the revolver to another soldier. He said that his M-16 met all his needs for a firearm. Therefore the weight and bulk of the Blackhawk, holster and ammo, plus the daily maintenance required to keep the revolver combat ready, were not worth his time and effort.