Handy hand-held pocket Musket ball measuring guide. Please note: this is an informal guide ONLY and is not a guarantee or identification device. Hole diameters are based on the official calibres listed for a range of popular historical muskets, however many Musket ball calibres varied over time. Musket balls were also subject to wear and deformation from age and use. Any formal identification should be carried out by your local Finds Liaison Officer. Musket ball not included!
