The impact of the U.S. Supreme Court’s recent landmark decision on firearms is reverberating throughout Massachusetts and in particular in Springfield where the Police Department found its decades-old practice of routinely restricting — or even denying — licenses to carry firearms was suddenly unconstitutional. “With the new changes from the Supreme Court decision, that’s all gone,” said Deputy Police Chief William Cochrane. ... The concern among lawmakers is that Bruen will chip away at Massachusetts’ gun laws, considered among the toughest in the nation, that have been on the books for decades and longer in some instances. The first law...