I think you use an Auburn tom on Bronze hens and all the female offspring will be bronze and the male offspring will be Auburn. It might be the other way around. You can probably confirm what is correct by calling Kevin Porter, he's a turkey genetics genius. That's where I get most of my info from, he's got all the years and resources invested in it.
We have an Auburn Tom from Porters and asked Kevin Porter that same question...
Auburn Tom to a Brone hen will give you Auburn Hen (pure), and bronze toms (carrying the brown gene)
the Bronze tom to Auburn hen will result in all bronze offspring the hens pure bronze and toms that are brown carriers.
that sumarizes his response to us
RobertH