Wanted to pattern my new 12 gauge shotgun last week with several buckshot loads. And function test it since I got it for home defense. Got to the range, they asked to see my ammo, I hand them my bag of ammo & they went through it. And said I can only shoot the slugs. No birdshot, no buckshot. I said ok, shot 10 shells, paid them & went home. Normally I would ask them why buckshot isn't allowed but this place sometimes takes that as a challenge & will get an attitude or ask you to leave. I've seen that happen a few times there. Anyone know why buckshot isn't allowed? Is that common with indoor ranges? I live in the suburbs so I can't pattern it in my backyard.