Mine start delaminating at the crimp area. But I'm shooting them in a 2 5/8 chamber also, which may contribute to the short life. The rest of the hull looks fine and could probably go twice the 3 reloads I'm getting. Some of the guys say there was an old "ironer" to remelt the wax and rebond the laminations. I may try something like that including dipping the mouths in hot wax.