The Primary & Secondary Terminal Ballistics Knowledge Hub organizes evidence-based articles, podcast discussions, and expert profiles on projectile performance after impact. It emphasizes adequate penetration, permanent tissue disruption, projectile construction and end state, calibrated testing, intermediate barriers, anatomy, and shot placement—while distinguishing repeatable measurement from visually dramatic demonstrations.
Start here: Ballistic gelatin is a standardized comparison medium, not a complete simulation of the human body. Use it to evaluate repeatable penetration and projectile behavior in context; do not treat temporary-cavity footage or a single shot as proof of real-world effectiveness.
Wound Ballistics Foundations
- Basic Wound Ballistic Terminal Performance Facts — Penetration, permanent and temporary cavities, yaw, fragmentation, construction, and relevant wounding mechanisms.
- A Missing Terminal Ballistic Frame of Reference — Penetration understood alongside anatomy, angle, expansion, velocity, and the depth required to reach critical structures.
- Fackler Discusses Shots to the Pelvic Area — Dr. Martin Fackler addresses anatomical assumptions and the limitations of relying on pelvic shots to stop a threat.
Testing and Interpreting Evidence
- What to Look for in Ballistic Gel Tests — Calibration, penetration, consistency, recovered-projectile condition, barriers, barrel length, velocity, and sample size.
- P&S ModCast 438 — YouTube Ballistics: Misinformation or Ads — How to separate controlled evidence from entertainment and advertising presented as testing.
Handgun and Defensive Ammunition
- A Simple Explanation of Duty Pistol Caliber Terminal Ballistics — Practical similarities among service calibers and the value of ammunition that meets established requirements.
- Duty Caliber Pistol Performance — Context for comparing duty-handgun cartridges without substituting caliber mythology for measurable performance.
- 5.7×28: Useful Cartridge, Not a Wonder Round — A capability-focused look at the cartridge without exaggerated claims.
- Understanding Bird Shot Is Not for Defense — Why dramatic shallow damage does not replace adequate penetration in defensive shotgun ammunition.
Long-Form Discussions
- P&S ModCast 125 — Terminal Ballistics — Dr. Gary Roberts on wound ballistics, calibrated gelatin, barriers, handgun and rifle ammunition, and common misconceptions.
- P&S ModCast 292 — The Applicability of Small-Caliber Pistols — Practical tradeoffs surrounding small-caliber defensive pistols and ammunition performance.
- P&S ModCast 308 — Pistol Bullet Performance — Pistol-bullet wounding, penetration, projectile behavior, medical context, and test interpretation.
- P&S ModCast 400 — The Return of DocGKR — Updated discussion of pistol terminal ballistics and defensive-ammunition considerations.
Browse the focused Terminal Ballistics Podcast Episodes page or all posts in the Ballistics category.
Ballistics Experts
- J. Buford Boone III — Former head of the FBI Ballistic Research Facility and an authority on standardized ammunition evaluation and forensic ballistics.
- Dr. Martin L. Fackler — Trauma surgeon and foundational wound-ballistics researcher whose work clarified testing and injury mechanisms.
- Dr. Gary K. Roberts (“DocGKR”) — Wound and terminal-ballistics researcher known for applied duty-ammunition evaluation and education.
Recommended Reading Order
Begin with the basic wound-ballistics facts, then read the frame-of-reference and gelatin-testing articles. Continue to the duty-pistol pieces for practical selection context, and use ModCasts 125, 308, 400, and 438 for deeper technical discussion and media literacy.