I think many of the hatch-alongs that have hatch rate contests use the what hatches over what is set to figure out hatch rate. Candling skills vary per person so what goes into lockdown can be very different.
I started with 18 eggs (12 shipped and 6 of our own). My own 6 were put in there...
People have the best luck putting chicks under a broody when it is dark and the chickens are roosting. But check them right away in the morning to make sure she had accepted them when she wakes up.
Set these eggs this afternoon - 12 shipped (7 lavendar orps and 5 blue polish) and 6 of our own eggs (4 EE and 2 BCM) Couldn't take picture of them in the incubators because they are going into several different ones. I'm testing myself with staggered hatches and so far, so good! I have one...