Too Long, Didn't Watch
1.) Shiny Pokemon are being reported as created "client side," meaning on your device, rather than Niantic's Servers
2.) Catching a FULL INVENTORY of Magikarp's, not a single one was Shiny. Botting them at the moment may not be possible.
3.) Due to the "client side creation of Shiny Pokemon," if you catch a shiny magikarp, and I catch that same magikarp, mine has a chance at not being shiny. It is individually based.
btw, long time no see OwnedCore. How ya been?