I purchased some once fired weatherby brass, factory from weatherby, ran through my Lee full lengt sizing die, and they would not chamber in my rifle. The bolt would not close. I am new to reloading, called the company that I purchased them from, and they directed me to Speer to help out. They told me to soot up the case and see where It's binding. Only place I saw was at the base, so I re- sized again, still the bolt would not close. Called Speer back, they said I would need to take my shell holder to a machine shop, and have it ground back. Too much work for 1 box of brass. So I reloaded some once fired brass I bought at a gun show, and they reloaded fine. I won't be buying anymore 1x fired brass from weatherby again.