Great article
most metals flow on compression, and any small elements (slices) will have a later moment of interia than slices close to the nose. Whether this is a "sealing" process is open to debate
because
the surface area of truncated cone is larger than the surface area of a circle having the same diameter. If nothing more than its a 3 dimensional surface rather than 2.
Im not going to say that the base of a boat tail bullet sees more pressure than a flat base because I know what kind of names I will be called.
