Filed from 4 published puzzles

CALIBER

Set to 4 different clues across 4 published puzzles, most often “.45, e.g., for a firearm” — The New York Times, Monday, 12 July 2010.

7 letters

Every clue on record, most used first

  • .45, e.g., for a firearmonce

    The New York Times — Monday, 12 July 2010

  • Boreonce

    The New York Times — Sunday, 22 June 2008

  • .45 or .22once

    The New York Times — Wednesday, 6 February 2008

  • Bullet sizeonce

    The New York Times — Tuesday, 6 September 1994