After trying most of the substitute powders over the years, I prefer Goex. Having said that, at one time I did use APP. I found that fresh out of the can it was just O.K., but slightly harder to ignite than real black (sometimes a hang fire), and somewhat less powerful. After being exposed to air over time it's velocity (power), and accuracy, seemed to diminish. I would not leave a load in overnight when hunting, start with a fresh load daily, because of this. Also, after exposure to the air it will clump up in the can over time. I buy Goex from The Maine Powder House in 10 LB. lots, and have it delivered UPS, that way I will not run out. I think I would consider Pyrodex, or 777, if I could not get Goex. I would not recommend APP, especially for what it costs.