Does ammo ever go bad

Rani...when shooting a rifle on a bench with the barrel resting on a bean bag, barrel rest ect.. Move your body forward closer to the bench so your right elbow is on the bench(rubber mouse pads work great for the right elbow). Then try taking your left arm off the stock and lightly grab your right forearm just above the right elbow. Your accuracy will skyrocket. Your barrel doesn't need to be suspended by your left arm because your barrel is already being supported. It feels weird at first but you will get used to it. But most of all have fun and shoot the way you feel most comfortable with. And always assume the shooters around you are stupid. Watch out for the yahoos who don't have their guns pointed down range. Always