The Powder can be bought from Talon as well as others, Talon specialize in de-milling mil spec ammo. When you go to buy the powder, it will tell you what commercial data is most compataible, and you can use that data. Of course you'll need to work up the rounds slowly, 1/5 a grain at a time. We've had the argument that tracers can cause damage to the barrel before, I am one who say's they will not, but in any case, firing 100 or so over the life of the barrel surely won't. If you get the powder, and need data for it, let me know I have a few cross reference books here to help.