The outcome would be seen in the pullets not in the stags. The pullets would be either stippled or wheaten: stippled is dominate if I remember correctly. So if the cock came from a stippled hen (true bbr) the pullets should be stippled. If he came from a wheaten then the pullets would be wheaten.
Some will tell you they can tell the difference in the cock birds from a stippled hen vs a wheaten hen. I cannot.
Some will tell you they can tell the difference in the cock birds from a stippled hen vs a wheaten hen. I cannot.