Eleven bullets representing four of the five interpreted generic designs were personally gel tested prior to writing the eBook contained in this website. The testing’s intent was to provide a technical basis in the eBook’s storyline for how an expanding hunting bullet produces a wound cavity, how the bullet’s general (generic) design and impact velocity control cavity volume, and how these concepts can be applied to a specific bullet selection for a defined hunting scenario. The testing procedure is described in narrative form in eBook Chapter 12. The actual test results, referenced only by the bullets’ generic designs, are presented in narrative form in eBook Chapters 13, 14, 15, and 16. The entire eBook can be accessed by clicking on the “eBook” tab on the website’s header.

There are no photos or illustrations in the eBook to help readers visualize the testing and analytical process. Photos that provide visual context to the entire testing procedure, including slicing of the gel blocks to enable determination of key Guppy-metric values of the analytical model, can be accessed by clicking on the “Bullet Testing Album” link below.

The synthetic gel blocks shown in the photo above depict the relic “Guppy” shape of the fracture array caused by passage of a test bullet. The extent of these fractures simulates (models) the wound cavity produced in an animal, including the extent of bloodshot tissue. Guppy metrics referenced to this generalized shape can be found by clicking on the “Guppy Model” tab found on this page’s header. Mathematical definitions of these metrics can be found by clicking on the “Guppy Tech” tab also found on this page’s header.

The zebra management hunt, as documented in the 2023 management hunt report found in this website, was conducted to obtain field and skinning-shed data necessary to validate terminal performance concepts and analytical methods presented in the eBook. As a consequence, the management-hunt report and related terminal performance articles have since become website publication priorities rather than formal article presentations of testing methods and test results.

When time permits, such testing-related articles will be posted in this portion of the website. Please periodically check for availability. In the interim, the eBook chapters referenced above will provide beneficial context to these future articles. An article describing how such testing results can be applied to select a specific bullet is found by clicking on this website’s “Terminal Performance Articles” tab on this page’s header, and reading the article entitled “Can a 358 Winchester Compete with a 375 H&H and a 300 Winchester for Shots on Non-Dangerous Game at Less Than 300 Yards?”