I know this post is almost a year later than the original post but you may want to try coating your own .it's not difficult I'll post some photos and I'll put up a link on the cast bullet website there's a lot there that can be learned about coating your own bullets.
http://castboolits.gunloads.com/forumdisplay.php?184-Coatings-and-Alternatives
The photo is a shake and bake method,230 gr lee mold with HF powder.
Smokes powder is much better though.