This is why I weigh all bullets on the way in the door. Last order was over 3,000 mixed bullets. Each package opened and at least 5 to 10% of the bullets in each box or bag weighed. In each 500 count box I weighed 50 random samples, in each 100 round box I weighed a dozen to all of them. A few years ago I bought five 10,000 round lots of IMI SS109's. Weighed 100 random bullets out of each 1,000 round package in lot. Once verified lots o.k. went into storage. As each 1,000 round package comes out to be used, I weigh another 100 random samples. That said, I have never had any bullets shipped that were significantly out of specifications marked on package.