I had a feeling my Buckeye eggs were on the smaller side, but then I weighed them and they are heavier than the store eggs state (not that I have bought store eggs in a long while, but the box has a weight on it. Most of mine were well over, like 60g to over 70g.
I haven't research or tested if a pullet lays the same shape as the hen she came from, but I suspect there is something there of a relationship. Mine tend to be normal egg shape to more round with the Buckeyes. However, I can always tell which eggs came from the Wyandottes because they are elongated. I think if you want some variation or egg improvement for shape and color, then you would want to get a rooster to outcross, but then if you do that, you then will see other things happen that you may or may not want to. IMO, using the same line will get you the what you already have for the most part.
I haven't research or tested if a pullet lays the same shape as the hen she came from, but I suspect there is something there of a relationship. Mine tend to be normal egg shape to more round with the Buckeyes. However, I can always tell which eggs came from the Wyandottes because they are elongated. I think if you want some variation or egg improvement for shape and color, then you would want to get a rooster to outcross, but then if you do that, you then will see other things happen that you may or may not want to. IMO, using the same line will get you the what you already have for the most part.