Bang! Distances scope
Yes, cards like the scope allow you to see everyone as if they where 1 distance closer. This lets you use any card with restricted range to hit someone 1 distance further away then normal. This is great with panic or to let you shoot someone who was just out of range before.

On the other hand cards like mustang increase the distance that other players see you by 1. So if you have a scope and the person next to you has a mustang the two effects would cancel each other out.