If the manufacture of today’s standard-size rounds were outlawed, and .21, .37, or .43-caliber rounds took their place, gun owners would eventually run out of the old ammo, and their weapons would become paperweights. We’d have the opportunity for a national gun policy do-over.

The jury assigned to the case of accused Special Warfare Chief Edward Gallagher has found the decorated Navy SEAL not guilty of murder and attempted murder after a whirlwind trial that included bombshell revelations and twists. The verdict was reached by the five Marines and two sailors Tuesday...