both barrels

In reference to discharging both barrels of a double-barrelled shotgun simultaneously rather than one at a time.

both barrels pl (plural only)

1. (informal, figuratively) The maximum damage that a weapon can deliver.

   to give someone both barrels

   to let someone have both barrels

   to hit someone with both barrels

   • 2025 August 7, Zach Vasquez, “From puppy murder to racist podcasts: South Park’s anti-deportation episode is utterly ruthless TV”, in The Guardian‎^[1], →ISSN:

     Rightwing media mouthpieces and ICE get both barrels in South Park’s latest zeitgeist-capturing satire.

• “give someone both barrels” (US) / “give someone both barrels” (UK) in Macmillan English Dictionary.
• “let someone have both barrels”, in Cambridge English Dictionary, Cambridge, Cambridgeshire: Cambridge University Press, 1999–present.