I found a listing that shows six steel 3-inch rifles produced by the Singer-Nimick Company. Number 6 is at Gettysburg. Numbers 1 and 5 are on the Chickamauga Battlefield. The location of the other three is unknown.

http://markerhunter.wordpress.com/2013/02/13/singer-nimick-and-co-3-inch/

I read that two of these where captured by Forrest at Lexington TN in Dec 1862. These two became the famous Bull Pups of Morton's Battery.

http://artillerymanmagazine.com/Archives/2007/bullpups_sp07.html

The two at Chickamauga are not where Morton's Battery saw action but are instead placed where Union batteries were located along side iron 3-inch ordinance rifles (which look practically identical).

It seems 3-inch ordinance rifles are sometimes referred to as "Rodmans", perhaps due to their shape. As far as I know, Rodman guns were large-bore hollow-cast guns. I wonder if only the steel rifles were referred to as Rodmans or if that name was mis-applied to all 3-inch ordinance rifles. Were the steel rifles hollow-cast? The wrought iron 3-inch ordinance rifles were not.

Two 3-inch "Rodmans" were captured by Forrest at Brice's Crossroads. Were these also steel?

From other reading, it is questionable whether the two steel Singer-Nimick 3-inch rifles at Chickamauga are in fact the two Bull Pups captured at Lexington TN. They are certainly two of the six cast by Singer-Nimick but there are conflicting stories on what happened to Morton's guns at the end of the war and how these two got to Chickamauga.

I'm a real novice on artillery (and most everything else for that matter). Any insight on these steel rifles and Morton's Bull Pups would be appreciated. I have pictures of the two at Chickamauga I'll gladly share -- email me a martikw@history-sites.com. Our webmaster Jim Martin and I visited the battlefield on the 150th anniversary of when our ggg grandfather Volney F. Willoughby was killed (Co. A, 5th GA Inf) and coincidentally Capt John Morton's 21st birthday -- Sept. 19, 1863.

Ken