Figure 7.7: A heavily corroded barrel from an arquebus, which has exploded on firing, that is believed to be from the 1476 battlefield of Grandson, Switzerland. It has a bore of c.17 mm and so will have fired a ball of c. 15 mm. The muzzle is to the right while the priming pan is just visible on the side of the barrel close to the breech. This and the two tangs, used to fix the barrel to the wooden stock, show this was a weapon which could be fired from the shoulder in the same way as a sixteenth-century and later musket (Grandson, Switzerland)