Bullet weight is stated in grains, and 7,000 of them make a pound. In the small bores, weight matters less than shape, because a long, pointed bullet holds its speed. That quality is summed up in a number called ballistic coefficient: the higher it is, the better the bullet resists air drag. Light bullets: varmints and benchrest Hornady's ELD-VT bullet, built for varmint and tournament...