I hear you, I have 5 rifles about the same distance, locked in a safe. The bolts and ammo are both in seperate lock boxes and not stored with the firearms; the keys to all are not store with any normal keys.
I think Australia has about 15-20 firearms pr 100 people and New Zealand about 25-30 (depending on where you get the stats from), compare that to the US where it’s above 150.
The whole culture around firearms is screwed there - you have senators posing for Christmas card photos with the whole family posing with a small arsenal of military firearms, or a guy guys caught on camera (clearly carrying side arms) saying “I feel threatened”, in a power pose/alpha-male stance, while advancing on some other guy in a mall.
From here, on the outside, the whole US feels quite fucked; and it’s not just gun violence…