They just kept on pulling the trigger as bullets were coming out of their guns and penetrating the zombies' heads. They had been taught how to aim well and fire, so they were able to be shooting the zombies in their foreheads easily.
This was easier, they didn't need to be swinging their weapons here and there to bring down zombies, it does consume strength. With their pistols, they were just standing on one spot and ending the lives of zombies.
Their gunshot sounds were still echoing when Everett voiced out,
"I want to make use of my pistol too".
"Are you getting tired?". Hugo questioned while slaying zombies, he didn't even glance at Everett to ask that question, it wasn't possible. If he did, he would have most likely gotten bitten by zombies.
"No, ain't that tired yet". Everett responded.
"Then why do you want to make use of your pistol? Don't you want to save bullets?". Ryder inquired of Everett.
"I do".