Let's keep this thread alive. Shipping ammo to hawaii has always been a real bugaboo, but if there is a system, it can be beat
The reason for high pricing is the packing, handling and the fact that it loses it's ORM-D Status as soon as it goes feet wet on a ship or up in a plane. It becomes an explosive 1.3 or 1.4.
This according to my trucker son who has a hazmat endorsement.
Ammunition may seem to be confiscatorily priced here, but when you add up all the regulatory BS your LGS goes throught o get it here...

I have decided to support your local gun shop on this item, or reload.
If I was on the mailand and acquired a large amount, however I would as you are look to ship it cheap as possible.
Check with Carter at OGC. He may be able to point you in the right direction. He ships lots of ammo