Hornady Critical Defense, 30 Super Carry, 100 Grain, Flex Tip, 20 Round Box 90050 Since their inception, conventional hollow point pistol bullets have performed well, but have never delivered 100 percent reliability, especially in self-defense situations. The patented Flex Tip technology used in Critical Defense ammunition eliminates the clogging and inconsistency that often plagues hollow point bullets. Hornady achieved this by using the same tip material used in LEVERevolution ammunition.