WHAT DOES FN 5.7×28 MM 40GR AMMO MEAN?

The bullet On this product includes a Sectional Density, (SD) of 0.209771433046552. SD would be the ratio of an object's mass to its cross sectional area with respect to the presented axis. It conveys how perfectly an item's mass is distributed (by its condition) to beat resistance alongside that axis.These responsible 9mm full metal jacket flat no