Personally I'd call it full metal jacket flat point (FMJ-FP).
The design is indeed called a truncated cone solid bullet, first developed by the Germans early in the 20th century, in both 7.65mm and 9mm calibers, for use in the Luger pistol. The German military dropped the design in favor of a round-nose bullet in 1916. The Italians used the same bullet shape for their 9mm Glisinti 1910 pistol cartridge (very similar to the 9mm Luger, but less powerful). I can't comment on the relative advantages of either bullet shape.
The bullet pictured has no ogive at all. Or if you prefer, a secant ogive of infinite radius, meaning that it has no curvature. See my discussion at http://smith-wessonforum.com/reloading/535837-meplat-ogive-post139757371.html?535837=#post139757371I disagree. This is a Truncated Cone in a revolver caliber. Steeper ojive and smaller meplat.
They are good paper punchers. Almost as good as a SWC, but they work better in bottom feeders than SWCs due to the smoother profile.
Same here.I would call it a FMJ Truncated bullet.