Technically and legally one would think that would be okay. And I know drugs are an issue, especially at certain crossings, but they get real serious about handguns as well. I just use the USPS when shipping components anymore. A piece of plywood in the bottom, (or a complete wooden box) to fit perfectly inside a Flat Rate box and you’re golden. In fact I have 50 pounds of 22, 30, 375, and 45 cal bullets I cast this summer from discarded gillnet leadlines sitting in a medium flat rate box ready to ship. 😎. They may not like it, but “if it fits, it ships”! 😁
