I have one question why?
By cross breeding you weaken a gene pool that has been developed for years. Each breed is used and bread for certain huntable characteristics. The Catahoula is used for other game more fur, while a Brittany is one of the versatile pointing breeds. Used on upland game aka birds. Can one dog do it all? Certainly but then I suggest looking for a pup that way rather than creating a mutt.
Sorry to disappoint but that is my suggestion.
Not to clear a few things up - I owned mutts and hunted mutts at an early age. They can hunt but with the variety of great breeds one can get now - I must ask why?
JW
I was just curious what it may turn out like that is why. I have a Brittany and am thinking about getting a Catahoula. Plus I like mutts