Western Powders or now Hodgdon don't recommend using the powder in pistol rounds anymore, but at that time in silhouette shooting, we were all looking for anything that would give us an edge.The only way I would use AA5744 in a pistol cartridge would be in a rifle/carbine length barrel. It is simply too slow to work well in a pistol. Just my .02. I know there is data for it, but at the end of the day, there are better powders for that application.