To provide a method for blasting calibration of a chill mold including a tubular mold or a block mold in a relatively simple manner and at a relatively small cost.

In a method for blasting calibration of the chill mold, a calibrating mandrel is inserted into the chill mold 1, an explosive material is placed on an outer surface 4 of the chill mold 1, and ignited. The inner side 3 of the chill mold 1 is pressed against the calibrating mandrel by the explosive force, and brought to the setpoint measure. In a mold wall 2, the chill mold 1 has bores 5 for cooling means and for measuring elements, which extend in the longitudinal direction LR of the chill mold 1, and exit at end faces 6 and 7 of the mold wall 2. Before the blasting calibration, the bores 5 are filled up with a free-flowing material and tightly closed. The free-flowing material is preferably an incompressible fluid and/or a built material.