Lastly, these could also kill men where other guns couldn’t reach them The 8-inch and 10-inch siege mortars had maximum ranges of 2,225 and 2,064 yards, respectively, and the 13-inch seacoast mortar had a maximum range of 4,300 yards, but their effective ranges were much shorter. For the 8-inch siege mortar at a range of 800 yards, about 50% of the shells would fall within a 50-yard radius of the target. With the 10-inch siege mortars at 875 yards, about 60% of the shells would fall within a 40-yard radius of the target. The 13-inch seacoast mortar could be expected to be more accurate.
Bore – 2 1/4, BREECH: 5 1/2″, CHEEKS: 6 14″, OAL: 13 1/2″, TRUN D: 2 1/4″, TRUN L: 1 3/8″, TRUN OAL: 9 1/8″, TRUN-CASC: N/A