In my opinion
I think that the bloodred genetics are more complicated than just simple recessive trait.
Most of the time you can tell that a hatchling is het for bloodred. (I am not saying that this is 100% true) but I have seen a lot of hatchlings that are suppose to be het for bloodred have a grey to a greyish head but with checkered belly. So I don't think that the bloodred trait is just as simple as a recessive trait.
But someone with more experience with the bloodred genes might be able to answer your question in a bit more of a detail than I can. I only have breed bloodreds for a couple of times~~
But I know one thing for sure,
breeding a bloodred to a bloodred will result in 100% bloodred batch. (Assuming that both are not het for anything else)