If they are short shipping mag's and other items, and I don't doubt it at all! No one packing the mag's would know, the packing list are provided with the amounts listed for each item! I used to be a binder, trimmer $ and mailing line operation tech, back in the mid 70's, all of our factory was state of the art equipment for the day. Our mailing equal has the packing list programed into it, and the mags were counted out and strapped without anyone touching them, until they were stacked off at the end of the line!
Back then, I could see where the mags were heading in abvance, I kept little notes with my info and a hello note on it, with stuff going to bethell was coming, I would put my notes in them. I still have a few good friends from those notes! 2 of the are like me, stuck in, but out mentally!