Things I liked:Everything! They shoot the most consistent groups compared to other top ammo in my Air Arms TX 200 MK3, I just love them, I just order 12 tins from Pyramyd Air. Things I would have changed:As most everyone says, a screw on lid. What others should know:I've tried only a handful of pellets through my rifle, but I always come back to these. Groups immediately shrink when these are being shot. Weight @ 8.4 gn seems to be just right for .177. All pellets should have this shape. I've tried only a handful of pellets through my rifle, but I stay with these, this is what my tx200 likes.