My RS2 shoot's Daisy premier .22 wadcutter's real well I have'nt tried the .177 barrel as i have a Crosman StormXT in that caliber. I can shoot quarter size group's all day at 30 yd's with them if my eyesight was better the group's would be tighter. It's a challenge to shoot when you have Macular Degeneration.lol I have'nt tried other pellet's as the selection at Wally World is limited!