For a Shaymin, I'd have to hack a wondercard to get Oak's letter, so it'd have to be Heatran(s). Do you want all of them? What Balls? I hope Repeat isn't one of them, because I don't like those too much, but nobody says I can't catch them in only the ones I like (I can catch the same spread with different balls with the help of save states).
I also have a Raikou with HP Ground 70, but its IVs are 26 / 15 / 31 / 30 / 26 / 31. Not sure if you'd like that.