How Many Joules Do You Need for Less Lethal Self Defense? This video discusses joules, and shows the results of getting hit by 7, 11, 25 and 75 joules of energy out of less lethal launchers. 3views Beginner Guides Related Videos Byrna TCR Use Tutorial – How to Prevent Problems. Chrono Test Beginner Guides,Reviews and Field Tests Byrna TCR The Top 5 Byrna Hacks Beginner Guides,Reviews and Field Tests Byrna LE,Byrna SD Are You Making These Top 3 Mistakes with Your Byrna Launcher? Beginner Guides,Reviews and Field Tests Byrna LE,Byrna SD IntruBuster Gen 2 Deep Dive | Mods, Chrono Numbers & Setup Guide Beginner Guides,Upgrades & Modifications IntruBuster Gen 2 «12Page 2 of 2