I'm getting back into reloading. A few years back, I acquired a Lee turret and a bunch of components. I never really had a nice supply of brass, so other than dabbling with a few loads here and there, it's just kind of sat. I'll soon have a nice supply of brass, and would like to get this up and running. Question, I have about 1000 165gr fmj bullets, and a pound or so of Unique. Alliant publishes data for a 165gr GDHP, using 7.2gr of Unique. Since these are both jacketed bullets, am I good backing off by 10% or so on the powder, keeping the minimum OAL the same as published? There's not much out there published using the components I have on hand. Thanks!