I've asked myself that very question. I would have thought no way. But it appears to have happened.Not disputing anything posted in any way but asking a question for my own education...... If there is a squib situation/complete blockage situation does a 22lr create enough pressure to cause a barrel bulge when there is also a case rupture in a semiauto weapon? Does a 22lr create enough pressure to to cause a barrel bulge in a bolt action weapon in a squib/complete blockage situation? I'm just ignorant in this area and would like to know.