
Blakely rifles were smuggled through the blockade from England. Three of these rifles were with Hart's South Carolina Battery (Washington Artillery) attached to J. E. B. Stuart's horse artillery during the Gettysburg campaign. During the Battle of Gettysburg, Hart's battery was detatched and did not participate in the main action. The battery rejoined the Confederate column in time to participate in the repulse of Judson Kilpatrick's ill advised cavalry charge south of Gettysburg on 3 July. (The Blakely rifle pictured here is on the field at Shiloh NMP.)
Bore Diameter 3.4 in (8.64 cm) Tube Material Steel Tube Length 59 in (150 cm) Tube Weight 800 lb (363 kg) Powder Charge 1 lb (0.45 kg) Range (5° Elevation) 1,850 yd (1,691 m) At Gettysburg 3 (CSA)
http://schwartz.eng.auburn.edu/ACW/arty/blakely.html