I shot at an start ran range too. it is the one thing I hate, been lucky once some of the guys that are shooting ak or ars notice someone is getting hit. they try there best not to have the brass hit ya. I set where there is a pole to help protect me.
when I owned a sks, I put a shell deflector on it to help with the spray.
on my mossberg, I made a shell deflector to kick the brass down to my scrap brass bin, just down to the table or the ground.
good shooting there