From The Blaze:

“Sierra uses no primary lead at all and never has, so we use nothing directly from this facility,” the company said in a statement on its website. “[W]e do not see any reason for alarm. We expect our supply to continue and keep feeding our production lines which are still running 24 hours per day to return our inventory levels to where they should be.”

“No impact upon any cast bullet manufacturing operation whatever. We do not use virgin lead, which is what Doe Run provided,” Brad Alpert, operations manager for the Missouri Bullet Company, told TheBlaze in an email. “We use foundry alloy from major foundries derived from scrap sources, purified and cleaned to purity.”

“The jacketed bullets companies (Winchester, Remington, Federal, et al.) use the same sources that we do,” Alpert wrote.