SIZE	Medium	Large	X - Large
Neck	15 - 15 1/2	16 - 16 1/2	17 - 17 1/2
Sleeve	32	33	34
Chest	38 - 40	41 - 43	44 - 46
Rifle Shirt Length	40	40	40
Other Shirt Lengths	34	36	36
* Shirts from 1700 to 1820 were very full through the body. The extra material allowed for the dropped sleeve length increased as size increased.