David Pierotti appealed to the 7th U.S. Circuit Court of Appeals, contending a federal judge in Wisconsin erred in giving an “ostrich instruction” on what would justify a verdict that Pierotti knowingly made a false statement when, while purchasing a rifle, he submitted a form saying he had not been convicted of a “misdemeanor crime of domestic violence” — even though he had a record for misdemeanor battery of his then-fiancee.Pierotti testified that before he went to the local Walmart to buy …