You can reach AP
by clicking RIGHT HERE.
Next, click the link that says
Contact Us.
The fine folks there will let you know of a closest-by retail store. It may take $10 in gas round-trip, but that beats paying HAZMAT & shipping.
When you purchase it, buy the FFF. The FF is so thick that it won't pour out any brass/black plastic flask I own. Treat the contents of that powder with a nice, dry climate & only take what you need to the range.... not the entire container.
When returning from the range, keep what's remaining in another container... don't mix it & if temperature changes are drastic, try to moderate the temperature of that AP powder to another climate slowly.
That stuff is sugar-based & grabs moisture easily & won't let go. Keep it dry & you'll be a happy camper... oops shooter... for the life of the jug.