Have you searched this site for previous posts, ie in 2016? Seems you're not the only one. The sort of resolution has been to flare the skirts with a home-made device (I guess based around a ball bearing), but it appears to be debatable how much it helps. I assume tracking down a Lanes patent bullet expander is pretty well impossible. It seemed to be a stud nailed into the gun stock, for such a purpose. Similar issues raised on other forums.