HOWARD THUNDERBOLT RIFLE. Cal. .44. 18" rnd bbl. Marked "C. HOWARD. PATENTED SEPT. 26. & OCT. 10. 1865 - OCT. 28. 1862" on the left side of the bbl and "WHITNEY-ARMS-CO.-WHITNEYVILLE.CONN." on the right. A dove tail in the bottom of the bbl has been plugged. Only about 200 of...