For an AR-15, which is a common firearm for home defense and sporting use, a realistic amount of ammunition for someone preparing for self-sufficiency might range from several hundred to a few thousand rounds. This allows for both practice and defense needs. As for magazines, a prepared individual might have 12 – 15 magazines, which are often recommended for various defensive and practical reasons, including ease of reloading under stress.
It’s important to note that in a realistic scenario, the character would also be likely to consider safe storage practices for their ammunition and firearms to prevent accidents and ensure that they are secure.
Moreover, in the movie, you might want to depict the character practicing responsible ownership and possibly engaging in training to ensure they can use their firearm safely and effectively. These details can add to the authenticity of the character and the scenario you’re portraying.
If you’re writing a script or developing a story, you may also want to consider the psychological and social implications of such a situation on your character, as well as the legal aspects of firearm ownership and use in self-defense situations, as these can add depth and realism to the narrative. Consulting with firearms experts, law enforcement, and self-defense instructors can provide valuable insights into how to accurately represent these aspects in your film.
