10mm too me is just not smart. That is if this is a survival thing. Shotgun. Well maybe. But i think 9mm and .45 would be easier to come by. One gun for me would be the cz sp01 tactical. 20 rounds loaded and very accurate. Most copied and issued handgun in the world. Well the cz family. Not a fan of plastic guns myself. Glock..strong enough for a man but made for a woman. Lol. Kidding. Cz sp01 all the way and then some.