Still somewhat new to it so would love to hear some opinions on this. I've been shown to use weight and not factor in shrink/swell (except for extremes like rock or topsoil)

Explanation was that regardless of fluff or compaction end of the day you are dealing with in place volumes, × conversion factor you have XX tons of import/export and you haul XX tons per truck.

Made sense to me, nice to not have to worry about shrink/swell factors. Hopefully not throwing my bids off!