draw down
v. phr.— «I thought I was gaining on the guy. I drew down on him, then I thought I don’t have a good enough reason to kill him and stopped. Then I saw it wasn’t the man I was after.» —“On Patrol: Weekend of Wrecks That Wasn’t” by Steve Emmons Los Angeles Times Sept. 9, 1973. (source: Double-Tongued Dictionary)