This is an updated Gunbot beta link for finding in-stck ammo. This new link adds .45 and some others plus its updates every 60seconds! BTW, they could probably use a donation to help keep it going.
I'm not associated with this but it's pretty neat and works, plus they keep adding new suppliers to the mix.
Save the link to your desktop
http://www.gunbot.net/index.php?cal=45acp