this is going to sound strange but the eggs should weigh less than fresh eggs of the same size from the same birds. I'm thinking you did not weight these eggs before setting. Meaning you would need to estimate a starting weight.What should they weigh if growth is happening?
lots of good info on this link. When to stop turning and even how much weight should be gone (13-14% of starting weight).
Lots of info that won't apply to you too as there is info on many different scenarios.
https://www.backyardchickens.com/a/hatching-eggs-101
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