Theoretically it is possible to chain for Chanseys; good luck getting it started though.
The only shinies I've encountered would be a shiny Ratata while speed training Pikachu in LG, and a shiny Wailer I caught in Ruby when I went a fished outside of Pacifidlog town, which I did only to spread Pokerus through pokemon that were to be pal parked...
At MeleeFC, I played this guy who led with a shiny ScarfCham... said he spent 4 hours chaining Medichams until he found one good enough to be competitive. Personally, I find that tale a little hard to swallow... said he chained well over 100 to get that one. Maybe I just don't have enough time to go a-chain'in :(
The only shinies I've encountered would be a shiny Ratata while speed training Pikachu in LG, and a shiny Wailer I caught in Ruby when I went a fished outside of Pacifidlog town, which I did only to spread Pokerus through pokemon that were to be pal parked...
At MeleeFC, I played this guy who led with a shiny ScarfCham... said he spent 4 hours chaining Medichams until he found one good enough to be competitive. Personally, I find that tale a little hard to swallow... said he chained well over 100 to get that one. Maybe I just don't have enough time to go a-chain'in :(