So, 13 years of shooting and thousands and thousands of rounds, never once have I actually seen a squib round in person. Today however, not only did I see my first, but also my second and now 2 barrells are sitting at the gun shop waiting for the gunsmith to remove the bullets. These were 165gr .40S&W Winchester white box, 100 round value packs bought at Wal-Mart. Good luck trying to find a number for customer service, I finally got one and left a message. We will see if and when they ever call back. Please be aware if you are shooting this shit ammo!!!