Well, you guys have raised some good points. On Swanson blanks, I was unaware of the flash component and since we don't reenact night fire fights for safety reasons, I will make my next blank purchase elsewhere. Of course, I used an old WH barrel for my 28's blanking so as to not ruin a good WW2 vintage barrel. Moreover, I'm very conservative when shooting blanks during a reenactment because I pay for everything. I've never broken the 200 round mark in a single weekend event. There's no use blasting away just to make noise if the other side won't take a hit unless its delivered point blank(no pun intended.)