This is my personal experience with shipped eggs, so you can take it with a grain of salt, just want to share what helps me to be successful.
I candle them after unwrapping to check for any cracks, bacteria can get in easy and turn them bad. A bad egg can explode in your incubator contaminating the rest of your eggs and makes a horrible mess. If an egg smells rotten, and it is a distinct and offensive smell, pull it right away! Second, I candle to see if the aircells slip sideways at all, that means they are detached. It helps to know that and to be prepared if they don't reattach and develop properly, as that is not something that is in your control. So if those don't hatch, don't beat yourself up thinking 'what did I do wrong?'. You tried and that is all you can do.
For success in hatching shipped this is what I do, put them in cartons in incubator straight up on end for 2 days, without turning them at all. Then the next 2 days I just slightly tilt them to one side then the other about 3 times a day. After that I tilt them as far to the side as I can for each 'turn' at least 3 times a day. Just don't lay them on their sides and it seems to give a higher hatch rate. And you can hatch them in the cartons as well.
If you aren't putting them in a turner or laying them flat, then you can put shipped eggs into the incubator as soon as they reach room temperature. Just as long as they aren't cold, and only reason for waiting longer is to keep them still and upright. Make any sense? Hope this helps you.
I candle them after unwrapping to check for any cracks, bacteria can get in easy and turn them bad. A bad egg can explode in your incubator contaminating the rest of your eggs and makes a horrible mess. If an egg smells rotten, and it is a distinct and offensive smell, pull it right away! Second, I candle to see if the aircells slip sideways at all, that means they are detached. It helps to know that and to be prepared if they don't reattach and develop properly, as that is not something that is in your control. So if those don't hatch, don't beat yourself up thinking 'what did I do wrong?'. You tried and that is all you can do.
For success in hatching shipped this is what I do, put them in cartons in incubator straight up on end for 2 days, without turning them at all. Then the next 2 days I just slightly tilt them to one side then the other about 3 times a day. After that I tilt them as far to the side as I can for each 'turn' at least 3 times a day. Just don't lay them on their sides and it seems to give a higher hatch rate. And you can hatch them in the cartons as well.
If you aren't putting them in a turner or laying them flat, then you can put shipped eggs into the incubator as soon as they reach room temperature. Just as long as they aren't cold, and only reason for waiting longer is to keep them still and upright. Make any sense? Hope this helps you.