Not sure if this is pertinant to this particular forum but it is an issue for all of those that persue this hobby.
I just recieved this today in e-mail from a member working out of state and am not sure of his sources, but I do believe the threat to be real.
" I just got some disturbing news from a fairly reliable source, that the BATF is sending out undercover agents (again) to various re-inactment events like ours and Civil War etc. and setting people up with lines like "hey buddy I ran out of powder can I buy some from ya?" Well there is a felony conviction, jail time, and a $10,000 fine not to mention confiscation"