Maybe I'm lucky but I've never run out of 215's (I do buy them when I see 'em though).... Now mind you I don't bother with the M variety... I have enough for a while (2,900 215's and 2K 210's) but have gotten into 4 bricks of wlrm primers for the cartridges I don't care quite as much about... I try to stay away from cci as they are rather sooty and rem because I don't like how they seat at times, but I have been using some of the cci and rem in my shorter range rifles and my AR...
As to sending Hazmat, any hazmat certed. CDL trucker ought to be able to help you from what I've heard, but that too may be up to the winds of opinion...
Get some win primers and don't look back if 215 are tough to find in your area... rem are usable too if availability is really bad. The bullet and bore liking each other is 90%+ of the ballgame. The other things... powder, primer, bedding, etc. have more ability to make things go wrong than right... Get the little things right and magic happens when the bullet and bore like each other.