Figure 7.29: An experimentally cast 60 mm lead round shot. Clearly visible are the mould line and, centred upon it, the remnant of the sprue which has already been snipped off. These casting features are both relatively slight, so might easily be lost through bumping between rounds during transport or as a result of modifications on firing. The ‘II’ stamps are a series of marks added to enable each round to be identified when recovered after firing