There are only two times I ever 'outside neck turn'. I have a custom chambered 6mm that requires turning .002" total off of most factory standard brass to get proper bullet release. If I happen to recieved some crappy brass.....kinda like the .222 Rem mag brass I got for my .204 project. I turned the outside to get a decent straight case. All of this lot was "thick on one side thin on the other". Normally I would have sent this stuff back but at the time it was my only option.
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