What Does Ammo Grain Weight Mean And Why Does It Matter?
This video provides an expert-level explanation of ammunition grain weight, detailing its significance for projectile performance. Instructors Kai and Jason break down how grain weight impacts velocity, stability, penetration, and ballistic coefficient across various calibers like 5.56 NATO, 300 Blackout, and 9mm. They emphasize that grain weight is a critical factor for selecting the right ammunition for specific applications, from long-range precision to self-defense scenarios, and how it interacts with barrel twist rates.













