The 3-Inch Ordnance Rifle, Model 1861, was the most-used light artillery piece of the Civil War. More guns of this pattern were made than any other. Ordnance Department records show that nearly 1,000 were purchased, but published reports based on records of Phoenix Iron Company which manufactured them indicate the total was closer to 1,400.

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.

Cannon Dimensions:
Full Scale - Bore – 3″ | Breech: 9 1/2” | CHEEKS: 9 1/2″ | OAL: 72″ | TRUN D: 3 5/8′ | TRUN L: 2 3/4″ | TRUN OAL: 15″ | TRUN-CASC: 31 1/4″

3/4 Scale - Bore – 2 1/4″ | Breech: 9” | CHEEKS: 8″ | OAL: 58″ | TRUN D: 2 7/8′ | TRUN L: 2 1/2″ | TRUN OAL: 13″ | TRUN-CASC: 25 1/4″