That wouldn't likely involve a 240 foot shot. If you are at the mall on the second floor and need to make a 240 foot shot to the first level at the other side of the mall, you should not be attempting that shot for you are more likely to hit a bystander than the threat, which by the way is NOT a threat to you so you wouldn't consider firing would you --------
Be more realistic in your scenarios and consider how fast you can yank that hogleg while moving dynamically so you yourself aren't shot and putting rds into BG's from less than 15 feet. Once you can do that reliably, you'll be better off than worrying about making a precision sniper shot with a pistol which few will make in the real world, if ever.