How to use "barrel" in a sentence

Marius, who had thrown away his guns and was now without a weapon, began to move towards a barrel of gunpowder he had seen near the door of the wine shop

Marius was standing at the foot of the barricade, holding a flaming torch above a barrel of gunpowder.

An imposing, barrel-chested man in rumpled chinos and a white T-shirt snapped on the garage light and peered curiously at them

"If you cooperate, you won't get hurt." He waved the barrel of the gun at the older man