This macro is designed to be used with any shotgun/sniper as long as it has a high FPS (400+) within PointBlank. I won't tell you how to unlock it, but you can find it on the internet. The macro is set to change weapon on the left mouse button, but you can reconfigure it the way you use it and leave the same timings set. Enjoy, peace. RECONFIGURED, MUCH MORE RESPONSIVE
Download the program (Download) and go to the macro editor
press the button «Open file»
and select the downloaded file
assign a macro to a key and run the program