Revolvers have been around longer than your 92 years. lol It is ready for use in a instant when loaded. For home/apartment a K-Frame size with 3 or 4” barrel is convenient to hide in a drawer and is easy to shoot. The .38 snubby is more of a experts gun. The 32 Magnum and 22 Magnum deserve a hard look.

My Taurus holds 8 rounds of 22 Magnum and with short barrel ammunition performs well in tests. Consider home invaders often operate in group of 2 or 3 eight rounds is as many as some semi-autos.

p.s. Here is a chance to teach your Grandson that revolvers are not a museum fossil.