I’ve tried a bit of Silhouette and a bit of True Blue. I’m loading 9mm MG 124 FMJ and CMJ. Objectives are range blasting and I’d like to give IDPA SSP a try. I’m having a hard time differentiating between the two. They are close on the burn rate charts. My gut reaction is that they are very similar. I don’t have a chrono; I’m just going on “feel”. Have not shot from a rest but I seem to shoot them about the same. It appears that True Blue is a little more generic, I’ve also used it for 357mag and 41mag. I don’t think I’ve seen any Silhouette loads for those magnum rounds. I think if I wanted one powder for all three I’d probably think True Blue. If I was only concerned with 9mm would Silhouette be a better choice? Or, for 9mm, are we 6 of one and half-dozen of the other here? Thanks! Don.