Most manufacturers guarantee that their ammunition will last at least a decade. That said, ammunition can easily last more than 10 years if stored under ideal conditions. There are countless stories of surplus military ammunition being used many decades after its manufacture. Proper ammunition storage is crucial for the firearms you rely on in an emergency, such as your concealed firearm.
A weapon like that could go for years without being fired. Although most manufacturers recommend not using ammunition older than ten years, prevention is better than cure. After a few years, he uses those old rounds at the first opportunity, maybe practicing a little at the shooting range. Most manufacturers guarantee that their ammunition will last up to a decade.
In general, most ammunition will last at least ten years if stored in ideal situations. Ultimately, shelf life is strongly influenced by storage conditions. The useful life of munitions depends mainly on their state of conservation. On average, ammunition can last at least ten years.
However, your weapon may still be able to fire with the same ammunition even after a decade, as long as it is stored under ideal conditions. Once again, the useful life of ammunition is theoretical. As long as your ammunition is safely stored and protected from moisture or sudden temperature changes, you should be able to keep it for decades. Manufacturers usually recommend that ammunition be stored for up to 10 years.
But with the right tools and knowledge, your rounds can last longer than that. With the right conditions, your ammunition can last more than 50 years.