Hey Randy,
There are a whole lot of powder choices for the .223, and you really do not have to use a compressed load. If you find a particular compressed load works real well for you, then you will find it easier to load those rounds on the single stage. There is nothing wrong with loading rifle rounds on the LNL, but compressed loads are a problem as you found out for yourself. If you are not married to your Varget load, then find another faster powder that does fill the case so much. Like I said, there are a bunch of powders that will give good results in .223 and still be able to load on the progressive. All ball and flake powders meter real well on my LNL, and I have been using it for 12 years now. Extruded powders do not meter well for me, however, so I do not use them with my LNL.
Best wishes,
Dave Wile