Not unusual at all. If you start measuring bullets over the years, or from lot to lot even sometimes from bullet to bullet in the same box. Dies get changed, dies go out of adjustment, new dies verses old dies on the same production run all these and other reasons will give different sized bullets in the same box. That why many guys who are after the best accuracy they can get don't buy commercial off the shelf bullets. They buy custom made bullets all made off of one die with the same operator pressing each individual bullet so each bullet is as close to each other as possible made with the same lot of jackets and cores.
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