A few years ago during a rifle qualification (failed at first) I discovered my rifle was shooting 14 inches left from the previous 100 yard zero. Upon further inspection the barrel nut was loose. I torqued to spec and went to zero the rifle. I am using A2 sights. The rear sight had to be burried to the right to get the weapon zeroed. There is maybe 1/16" of adjustment right left. We don't have a barrel straightness gauge so I gave the rifle to an Air Guard Armorer from work to take and check straightness. He said he dropped the gauge in after cleaning and it was very slow to slide through the barrel. His assessment; it's bent. I spoke with the boss in charge and asked for a new barrel. I didn't get an exact answer but something to the effect of well if it's zeroed it should be good. I've only taken the colt armorer course and Sully's basic course (highly recommended over the Colt course) and don't know what argument I can use to get a new barrel. For those with more experience than me, is this something I should be worried about.