#21
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RareBear, Yes, clean shiny brass can cold weld to a clean bullet much more easily than oxidized brass would. Think metal prep for any soldering operation. Many years back I used to shoot Conventional Highpower, and the Gurus of the day recommended when loading months in advance, to load long, then reseat to the correct shorter length just before match day to break any possible bond. There was a lot of data on accuracy degradation due to extreme neck tension variation.
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