How do hydraulic flat tappet lifters fail?

that lobe profile has been around since the 70's (213/.454), it's not like the Brookshire lobes, renamed voodoo by Lunati.

Actually......

The cam I have is the Lunati Voodoo with .454/.475 lift, 213/220 duration @ .050, 112* separation.

This is the the 701 Voodoo cam, which is a fast rate .904 design.

Depending on the barrel diameter of the cam core, and how “cupped” the lifter has become, it’s not all that uncommon to see the lifters get chipped on the edge, from where the edge has been contacting the barrel.

You can see the witness marks on this cam where the edge of the lifter was contacting the barrel of the cam: