9MM vs 10MM (Penetration Test)
This video from Kentucky Ballistics features an expert-level penetration test comparing the 9mm and 10mm calibers. Using a Glock 19 with 124gr FMJ and a Glock 20 with 180gr FMJ, the test demonstrates that the 10mm caliber penetrates more wooden boards than the 9mm. The host, Scott, provides clear visuals and direct comparisons, showcasing safe firearm handling and structured testing methodology.













