I have some Lapua .243 cases which to my knowledge have only been fired between 2-3 times.
recently I have found that I have some cases that I am firing for the first time are showing soot much further back towards the head than I would expect.
The only thing I can think of is that they were fired considerably more than the "once fired" when I got them!
It doesnt seem to make any difference if it is a low, medium or hot load.
I have some test loads from the other day which I knew would probably be too hot and sure enough they are just beginning to show pressure signs but the neck is sooty almost down to the shoulder.
Would annealing make a difference or should I junk them and start fresh?