<human>: Condense the text into a few key points

Father-in-law was a hunter, he passed away several years ago. Fast-forward to the present day, and I discover some ammunition (12ga rifled slugs, 5mm rimfires, .222 long rifle) while cleaning his old shed. None have been fired, and I don't own a gun. I ask myself, "How can I safely get rid of this? I can't just toss it in the trash with my empty pizza boxes."

When searching for an answer online, I learn that local collection services will not take it, and that it should be surrendered to the local law enforcement.

At this point, I ask my younger brother (a 13-year veteran of the local police force) if he can take it. I trust his opinion whenever I have a question regarding police matters, so I tell him my problem. 

He then tells me to just throw it in the garbage. Not a big deal, he's done it before.

After making sure he wasn't trolling me, I criticized him for his irresponsible behavior (as big brothers have a tendency to do). He didn't take it very well, and now he's pissed at me.

I look up to him immensely and have a great amount of pride and respect for him and what he does every day. He is one of the good ones. Having said this, I cannot in good conscience take his advise. I also feel like I can't take it down to his station without dragging a private disagreement into a public arena. I thought about driving to the nearest city and dropping it off with the bomb squad, but I'm sure they'll just tell me to take it the the local LEOs.

I'm thinking about just digging a hole and burying the ammo inside a 100 lbs of concrete.
<bot>: Cop brother tells me to dispose of LIVE ammo in the common garbage, I chastise him for irresponsible behavior, he tells me to go f*** myself.