Rookie, Glocks are a good reliable gun to have , carry, shoot. But in my experance(I don't know if anybody else has noticed this). When I have shot a Glock the last 5-6 rounds fired, the gun "rolled" in my hand. This I accounted to be the center of balance shifting upward as the "weight" of the rounds in the mag moving up. For a new shooter this might cause some concerns.