I keep a very modest collection of Auxiliary cartridges because they bring back memories of a happier time in my life. Happier because I was a lot younger and life was a lot simpler.
I was a young farm boy during WW II and my only “Hi Power” rifle was a Stevens bolt action in 30-30 caliber. Shooting factory ammunition was out of the question even if I could have found any so I had to rely on a Lyman “nutcracker” loading tool, a bullet mold, and whatever powder and primers I could find (which wasn’t a whole lot during the later war years).
But I remember one Christmas when my older sister gave me one of those Marbles cartridges and a whole box of 32 Short Colt ammuntion. Imagine my glee - a whole 50 rounds of factory ammunition to slay all of those imaginary lions and tigers, and a few tin cans.
I don’t know where she got the cartridges and I didn’t care. She knew very little about guns and shooting so the idea must have come from my dad or older brother. She’s still alive today and is still my favorite sister in all the world.