Muskets like those from 1776 are mostly exempt from today's gun laws May 14, 2026 · Allen G. Breed · washingtontimes.com read more » With 165 grains of black powder in the barrel, a .75-caliber Brown Bess flintlock musket like the ones the redcoats carried in 1776 can hurl a lead ball at a velocity of around 1,000 feet (305 meters) per second. Read more »