How so? I pull bullets from live rounds and have for years. The kenetic bullet puller I have is set up to do that. I thought they all were. Nothing touches the primer. 'Splain please>
I guess it could go off if you hit the puller head on the concrete .............. primer first!
I had one with a 40sw that the primer had been dented by the firing pin, twice. Went home and put it in the hammer, and third snack, the powder ignited. It didnt do much, but it still went off. Im guessing the anvil was loose, and/ didnt hit priming conpound when in the gun.