I know we all have things happen when reloading that might have been worse than they turned out. And when we tell about them maybe it will help somone to make better choices and do things safer. I have used a kenetic bullet puller for several years with out any problems. I have heard of primers going off when using them but I never had any go off. But today I dicided to pull some bullets and load a different bullet instead of using some of my new cases as these were only loaded twice. I pulled 5 and then on the 6th the plastic puller broke into right below the area where the case is seated. I thought the primer had blew but it didn't. Pieces of the puller, powder and the bullet went flying around the reloading room. I was wearing my prescription glasses so nothing got into my eyes.
So I got on line and ordered a Foster bullet puller with the collets for the calibers I use. No more hammering for me! While this may seem trivial to some the bullet could have hit me in the eye or even a piece of plastic. If you plan to pull bullets get a good puller you can put in your press.