if your only looking for a brick or so cant really help ya cuz hazmat fees are pretty stiff just for very small ammounts, but if your looking to buy a very large ammount 10k+ try powder valley.
i frequently just use wolf primers for general shooting. magnum primers work just fine in non-magnum loads.
"Gun control: The theory that a woman found dead in an alley, raped and strangled with her panty hose, is somehow morally superior to a woman explaining to police how her attacker got that fatal bullet wound." — L. Neil Smith
The problem with being stupid is you cannot simply decide to stop doing dumb things...
"I crapped my pants to avoid the draft!!" -Ted Nugent