The M65 fired some pretty powerful nuclear shells.
W33 mod.1 Y1 = .05 KT W33 mod.1 Y2 = 40 KT W33 Mod.1 Y3 = 10 KT W33 Mod.1 Y4 = 5 KT
For comparison:
Little Boy(dropped on Hiroshima) = 16 KT Fat man (dropped on Nagasaki) = 21 KT
