So, you're building a range card to shoot-it-out from inside your home/appartment. I should think it would be better to confront the rioting mob from more advantageous positions.
The threat level of riots where I live is probably encased in dry ice.
I am simply attempting to open up some eyes to what is necessary to defend a position that could come under attack.
I’d start with a .50 BMG Barrett Model 95 or equivalent as a tool to set the approach boundaries but that isn’t always an option for others, especially those living in Kalifornia or Hawaii.