The heeled bullet design has some advantages, mainly when coupled with the straight-walled cases it appeared in.

At the same time, this bullet design does not deform like a hollow point, and as a result achieves greater penetration.

While the bullet design has gone through a few redesigns, the cartridge itself remains largely unchanged.

Although the new cartridge represented a great leap forward from previous designs, the initial bullet design was flawed.

This classification is based on materials and bullet design rather than on empirical ability to penetrate armor.

The boat-tailed bullet design of Mk 8 ammunition is not in itself a problem.

Nosler's contributions include both new bullet designs and new manufacturing techniques used in their production.

Keith was also responsible for a number of bullet designs still popular today, and collectively called "Keith style" bullets.

Over the 19th century, bullet design also evolved, the bullets becoming gradually smaller and lighter.

This is known as a heel-base bullet design.