Figure another holster on the belt plus a dual shoulder rig ( or it's antique cousin)
There were no shoulder holsters in the civil war. In the field it was common for guerrillas to wear two to four revolvers on their belts, two in saddle holsters and usually two to four more in saddle bags. They carried as many as they could get their hands on. Also, weight wasn't a problem for them. They carried little more than guns and ammunition, and the horse carried man and equipment. Guerrillas usually rode lightweight civilian saddles, and didn't worry about carrying food, as the locals provided meals (sometimes weather they wanted to or not). Remember, these fellows fought from the back of a horse. If they were caught in a fight on foot, their "edge" was gone.