I have a Stockdales near me and a Tractor Supply in the town about 20 minutes away where my parents live. I've tried to get both stores to order it for me before with no luck. The only thing they have in store is a game bird starter that's in a tiny bag, or medicated starter game bird feed that is only for the first 6 weeks of life. Per the info on the link, that feed you are looking for is also only for 0-6 weeks.
Since I have large chickens, bantams, and quail that I have as pets and for eggs (therefore all older than 6 weeks), I've just started feeding everyone Flock Raiser. It's small crumble, 20% protein, and I don't have to special order it because TSC has it in stock. Everyone has been fine on it for over a year now, I just put out oyster shells free choice, and we've got rock hard eggshells from everyone. They get veggie treats, mealworms, and flock blocks regularly just for fun, but have no issues with the crumble food and all seem to really like it.
https://www.tractorsupply.com/tsc/p...ser-crumbles-premium-poultry-feed-50-lb?rfk=1