As long as the same bullet leaves the barrel at the same velocity, what difference does it make as to what powder was used to propel it. I am fairly new to handloading and I have been experimenting with different powders. I have used Solo1000, W231, AA#5 and AA#7 in a .38 handload using 148 grain cast lead wad cutters loaded for around 800fps (I use a Chrony). The accuracy results from my 686 are pretty much the same. The recoil feels about the same and the "dirtiness" in the barrel is about the same. I am interested in you observations in this area. Thanks.