Manufacturer: Ames Manufacturing Company
Where made: Chicopee, Massachusetts.
Year(s) made: 1861-
These were bronze tubed guns built to the James pattern, with the characteristic 3.8" caliber. These were designed and built as James Rifled guns, as compared to the 12-pounder James Rifles (also in service at Antietam) which were Model 1841 6-pounders, bored out and lined with rifled iron or brass sleeves in the James pattern.
Employment at Sharpsburg
There may have been only six of these guns at Antietam, all in Federal service.
Find units equipped with these.
James-pattern shell, equivalent bolts & shells, solid shot
Bronze tube weight: 918 lb. Maximum range for 3/4-lb powder charge behind a 14 pound solid shot at 5 degrees elevation.
Photograph above is from the Gettysburg, PA battlefield, by Peter Schwartz - the carriage is probably a modern replacement.
More on the Web
Johnson, Curt & Anderson, Richard C., Artillery Hell: Employment of Artillery at Antietam, College Station, TX: Texas A&M University Press, 1995; and
Schwartz, Peter, Artillery at Gettysburg online.