Any favorites out there for loading up some "plinking" rounds while fire forming with bullets? I just picked up some new RP 280rem brass here and I plan to shoot 139/140s while forming. From what I've read it seems like a mid range load of a faster powder does best while forming? Due to availability I was thinking IMR4350 would be a likely one I'd be inclined to use. Depending on the given bullet in the 139/140gr range max tends to be 52-53.Xgrs per various reload manuals. Would a ~51gr charge seem like an appropriate mid range load for this purpose? (I'd load a few starters in .5gr increments lower to fire first as my typical procedure to work up to a given charge to account for all the variations that can cause a hot load).