How close is too close? I know thereís a lot of line breeding in the pointers. If sire and dam of a litter have same dam, that seems pretty close. Opinions from the experts?
If possible look at the COI. Anything over 12 and I'd be concerned. I recently contemplated a line breeding on FC AFC Shaq that would produce pups with a COI of 15 but ultimately decided against it. Shaq is my dog's grandsire and the dog I wanted to breed to had Shaq as the sire.
I know that breeding cousins is not uncommon but what you're describing is breeding half siblings. I bet that's too close. IMO