There are, of course, a lot of old school detachable magazine rifles one could have with the right money. Winchester 07 Police guns or Police versions of the Model 8 & 81 would make good home defense rifles. The magazines were made in the 1930's-1940's so they're definitely old enough. Most were in 15 round capacity like the custom Model 81 carbine pictured below. Most were in 35 Remington caliber.