Yes well, I was about seven when I tried to impress my girlfriend and took out my father's hunting rifle from his cupboard after breaking the lock with a screwdriver, sporting it out of the bedroom window and targeting our neighbor as he walked by.
After he yelled all kinds of words at me (making my dearest laugh at me), I put it down and took my father's M1911 out of the bedroom drawer and pointed it at her, telling her to stop laughing at me, luckily the 45 was so dam heavy I had to use both hands to balance it and my fingers couldn't reach the trigger – even though I tried very hard – luckily she stoped laughing and ran away. That evening I got the bashing of the month from my old man.
Many years later when I was about 20 he actually apologized to me for not having me taught earlier about guns and not having stowed and locked them away secure enough. So I think you are doing a good job at this, and as I forward earlier – just make sure a fellow like me can't open the locker.
and those buggers are smarter nowadays then us.
Regards
Kruska