I've been refused a sale of a long gun in Delaware due to a quirk of VA laws. It seems you can buy long guns from other states but the Federal statute on this indicates that the selling dealer must comply with the laws of the state of the buyer. Well, because a Delaware dealer can't phone in a check to the VA state police, he can't do it.
This dealer is well known for its high end shotguns and had just been audited by the BATFE a month prior. They had been selling to VA residents and were catching hell for it.