Salar600
I believe if you call PR bullets in Canada they can mail HPH-12's directly to you.
http://www.prbullet.com/
I know if you call Connie at MMP she can mail direct to you it just takes her some extra paper work or she might suggest PR also.
www.mmpsabots.com
The other sabot that might work well for you is the Harvester red 'crush rib' - if you are interested in that call Allen at Harvester...
800 922-6287