3.67 inch Sawyer shell that the Confederates used a axe to hack off as much lead as they could. when they got down to the base they could not get it off even tho they wacked it 38 times . There are axe marks even in the iron.The Confederates were scraping lead so as to mold Enfield bullets after they had picked up so many Enfield rifle muskets after the May 27,1863 attack laying on the battlefield. The vast majority of CS soldiers had smooth bores at the start of the siege but loaded them with buck shot to use as a second musket after they had the Enfield. I have dug several lead collection points behind the lines over the years and have a good Tom Dickey story I will post soon about one of these back in 1964.