No.
A bit. More the usual endless red tape.
Unless you have a bunker of the stuff, lol, not in my experience. Any problems would be owning what is deemed to be illegal or dangerous ammo.
Most of the 2.3m weapons are rifles and shotguns, so the ammo is pretty standard.
Thanks.
I love looking at the fine double rifles. Alas, my pockets aren’t quite deep enough :(