hello. i am contemplating a trip up country to collect some components for reloading. whilst i am up there a friend of mine has asked me to get him some heads. the caliber of heads is not a problem as i have it on my fac and so does he. the problem is i can only buy 200 at a time. can i take his fac with a convering letter or is this not legal? also is there a way of getting heads posted down similar to posting a firearm?