Raimey, I have used both Borderview and IRUNGUNS for moving shotguns across the border. I preferred Borderview because although it was a bit more expensive, they were much better at making the mandatory engraving of importer small and discreet. IRUNGUNS not so much.

Most people I know in the vintage gun world use Borderview. Zero experience with ammo. As SKB alluded to, price can be prohibitive but the more you are buying, the better the cost averaging makes it look. Just buy a ton!

The world cries out for such: he is needed & needed badly- the man who can carry a message to Garcia