Gauge-Caliber and ball weight chart

The following is a chart showing Gauge, Caliber, and the weight of a pure lead ball for some of the more common 18^th century muzzleloaders.

Gauge

Caliber

Weight of pure lead ball

(Bore)	(in)	(oz)	(gr)
11	0.75
14	0.693	1.143	500
20	0.615	0.8	350
24	0.579	0.667	292
28	0.55	0.571	250
32	0.526	0.5	219
67½	0.41	0.237	104