The 7.62x39mm, also known as 7.62 Soviet, produces much higher stopping power than .223 and 5.56, with most 7.62 rounds generating between 1500 and 1550 ft-lbs of muzzle energy. This makes the cartridge more than adequate for hunting and defensive applications, and with a relatively flat trajectory, especially within 100 yards, it can be effective for target shooting. Actually, on that note,...