What brand is your turkey starter?Where do you purchase it from(if you don't mind me asking)?
I am in WA State and I get mine from a feed store. It is Nutrena brand, from their line called "Country Feeds". Called "Gamebird". The feed store still interchangeably calls it Turkey Starter because the manufacturer used to call it that. Now the manufacturer calls it "Gamebird".
https://www.nutrenaworld.com/product/country-feeds-gamebird
But here is the insider info that took me a while to work out....you will notice on that link that it says it is 22% protein. Mine has always been 28% and was labeled the same as that one and the bag was exactly the same. Same color label, same photo of birds, etc... I called my feed store and they let me know Nutrena has 2 or 3 versions of this that have different protein levels.....all labeled as the same product. So If I were you, I would ask your feed store...
"What is the highest protein feed you have in crumble format? Probably going to be called Turkey Starter or Gamebird."
If they say they have something that is 21 or 22%, ask them if the supplier has anything higher they can order for you. It could be that they stock the 21/22% version regularly but could easily add a few bags of the higher protein to their next shipment. If their supplier makes it, there is no reason why they could not order it for you.
I picked St. Louis for this search.....
https://www.nutrenaworld.com/dealer-locator?zipcode=63101