Post # 16 is spot on your resized dye and your chamber are not working in concert together. Remember there is more to achieving proper cartridge fit to the chamber than headspace. The cartridge must fit radially as well as longitudinally for proper brass life and sealing of the gas inside the chamber of the rifle. I have used Kiff Reamers for many years with much success while using Redding full length bushing type S dies you need to do a lot of measuring and figure out if the chamber is too big or the dye is too small compared to virgin brass as Dave says the smoke on the outside of the cartridge case is a dead giveaway. There's too much clearance and probably not enough pressure. You can't just mindlessly squeeze cartridge brass into some random dye and say the bolt closes on my cartridges so they must be OK and not end up with problems like this. ...Roger.