Just a word on reloading the .303 British..
the chamber has its shoulder 1/8" further forward, due to headspacing on the case rim.
When developed in British Ordnance board decided that any picked up round would chamber and fire regardless of any debris / mud on that round.
So, when reloading, you'll have to "neck size" only and doing a full length resize will result is short case life, due to over-working the brass.
Be careful and good luck.
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