Have inside neck reamed and outside turned for different wildcats and tight chambered custom guns. Inside neck reaming is easy and imported reamers can be ordered from MSC or other machine companies in any size. The reamers are reasonable. Reaming is seldom necessary for most reloading for most factory guns. Some inside neck ream to get rid of donut that forms as brass stretches with some of the hot loaded rounds like the old 22/250, 220 swift etc. In your case the number of cases you would ream and cost of reamer verse cost of cases would determine if worth cost and efforts. I would ream instead of sand if it was me but I have reamers.