Only you know the answers here but ask yourself what other valuable items do you have that are easy to carry and re-sell quickly. Guns, electronics, optics, coins, jewelry, credit cards, hand tools, power tools, chainsaws, petty cash are more commonly stolen items.
Not saying it doesnt happen but its not common that reloading supplies are stolen during a break in. My nice press is more attractive than my open cans of powder or open boxes of bullets. Now if you have a tweaker family member who will slowly make off with stuff here and there thats different story i guess.
I’ll go off on a rant for all. Make your house the least attractive place to break into on your road.
Doors and windows always locked, cars locked and windows completely up if outside, park in garage, no garage door openers in cars parked outside, garage closed, side gates locked, a porch light on at all doors, a lamp on a timer, no easy quick tells if you're home or not. Doorbell camera too.
Driving down the street, how many neighbors can you immediately tell if they're home or not? Or gone for several days? Amazon packages piled up. Ive got a complete stranger neighbor down the way i know leaves town every other weekend. Every other weekend the house is dark and trash can sits out all weekend. Sunday around 7 or 8 its put away again. If he got a neighbor to bring it in and a wifi light switch nobody would notice that house. Burglars notice this stuff too.