Greetings, I have some 158g XTP HP and some 140g XTP HP bullets so I thought this might be a good time to try out some HS6 for some 38 special loads. I have never used this powder/bullet combination before so what better time than now. I have run test using these two weight bullets in 357 mag. only I was using Allinat's 2400 powder. I think this powder is a bit too slow for 38 special so I wanted something just a bit faster. What I have on the shelf that might match the burn rate I want to use for this series of test is; (Hodgdon Burn Rate Chart) Winchester 231 #29 Hodgdon Universal #32 Alliant Power Pistol #33 Hodgdon HS6 #42 Winchester AutoComp #43 I like HS6 in other caliber/bullet weights but I though this might be a good one for this application. My test gun is a S&W 38 Special model 10-6 w/4" heavy barrel. Any thoughts or advise before I get going here?