Videos tagged with Projectile Diameter

This video from Geauga Firearms Academy clarifies common 9mm ammunition designations (9mm, 9x19mm, 9 Luger, 9 Para) and explains how numerical identifiers relate to projectile diameter and case length. It emphasizes that while some rounds share a projectile diameter, they are not interchangeable due to case length differences, which affect pressure and firearm timing. The instructor also touches on metric vs. imperial measurements for other calibers like 7.62mm and 5.56mm, highlighting the importance of understanding these distinctions to prevent dangerous mix-ups.

This expert guide, presented by an authoritative instructor, breaks down the physics behind firearm ballistics. It details the standard energy formula and John Taylor's TKO formula, offering practical comparisons between various calibers, including the extreme .950 JDJ. The content emphasizes understanding projectile mass, velocity, and diameter for effective hunting and terminal ballistics analysis.