U.S. Air Force Airmen from the 1st Maintenance Squadron conventional unit, load 20 mm rounds on to a universal ammunition loading system at Joint Base Langley-Eustis, Virginia, May 1, 2018.

Just like any other load, 9mm ammo varies in price. The most affordable 9mm rounds are usually 115-grain FMJ target and plinking loads. You can find them for around $20 per box of 50 rounds, and ...