Check out the link page on the NSSA (North-South Skirmish Assoc.) web site. I can't help you with a local supplier but you might consider buying them in quantity - i.e. 1,000 or more at a time. Unfortunately, we all have to put up with the hazmat thing . . . . damn I long for the "good old days" before all of the crap went on to cause such things.
