What is 338 Lapua Magnum Ammo and Why is it So Popular? 338 Lapua Magnum ammo is a high powered ammunition that was developed in the early 20th century by Paul Mauser. It has a bullet diameter of 0.338 inches and is used by snipers, hunters and military forces https://338-lapua-magnum-ammo26813.blogsmine.com/18749300/the-complete-guide-to-338-lapua-magnum-ammo-and-how-it-is-disrupting-the-industry