I got a Rossi 511 .22 revolver. cute little gun. I want to get some ammo with a bit of punch to it. I'm thinking either the 40GR subsonic hollow point or the 60gr subsonic round. I hear there are some twist issues with the 60GR ammo and that it gets the barrel and chamber pretty dirty. Someone please advise the best ammo for my Rossi 511 .22 revolver with 4" barrel. Would the 40GR subsonic hollow point or the 60GR subsonic rounds be alright to shoot from this gun.