lpreddick said:tannerite is WAY more impressive. the product is called a "reactive target" and shooting 1/2 # will rattle your windows!
And will certainly tick off your neighbors (unless you live in the "boonies").
Lighting off Smokeless is best saved for night time where you can enjoy the full effect. To enhance your entertainment just visit the local auto repair shop and get a few pounds of the cuttings from his brake lathe.
Mix that in for the "fountain effect". Not as spectacular as thermite but a real "crowd please'r".