n : conical head of a missile or rocket that protects the payload from heat during its passage through the atmosphere. syn: nose cone *

The tip of a bullet is also called an ogive. Though it doesn't sound as snazzy or cool, hollow tip or hollow ogive is more proper than hollow point, when refering to bullet designs that have an open frontal profile, technically , but you know how words get confused and become part of normal language.

*Source: WordNet ® 1.6, © 1997 Princeton University