| Answer | Crossword Clue |
|---|---|
| BORE | Gun-barrel diameter |
| BORE | Gun barrel diameter |
| BORE | Barrel diameter |
| BORE | Inside diameter of a gun |
| CALIBER | Diameter of a gun bore |
| BORE | Inside diameter, as of a gun |
| CALIBER | Diameter of the bore of a gun |
| CALIBRATE | Ascertain the diameter of, as a gun bore. |
