Too many variables to factor in. What choke is installed? What is the barrel choked at if it doesn't have screw-in chokes? What barrel length? What distance? What size of shot? Ect.
I’ve shot about ten different brands of 2-3/4”, 00, 9 pellet buckshot at 7 yards.
I can’t tell one brand from the next.
If you intend to shoot longer distances, say 30 or 40 yards for deer or coyotes, please do your homework.
IME the best patterns come from Remington and federal le buckshot. Based on smooth bore barrels both long and short as well as invector factory choke in an fn slp