Manufacturer: Phoenix Iron Company
Where made: Phoenixville, Pennsylvania
Year(s) made: 1861-
The second most common rifled field artillery in both Armies generally, and the most common on the Maryland Campaign, the 3 inch Ordnance gun was made of hammer-welded, formed, machined iron. It was popular because of its accuracy and reliability, at least those examples built in Federal shops. Less precise machining and lower-grade iron gave their Confederate counterparts more trouble. Those built by the firm of Burton and Archer were know to be problematic.
Employment at Sharpsburg
There were probably 93 3" Ordnance Rifles in Federal Service on the Maryland Campaign, and at least 48 in Confederate batteries.
Find units equipped with these.
solid bolt, case, common shell, cannister;
"The 3-inch rifle normally fired Hotchkiss or Schenkel shells that weighed between 8 and 9 pounds. In an emergency it could use 10-pounder Parrot ammunition. It could also be used to fire cannister but, as a rifle, was not as effective with this as howitzers or Napoleons."
Weight figure is for gun carriage (900 lb) + tube (820 lb).
Max range is for 1 lb black powder charge behind solid shot at 5deg elevation.
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.