Im wondering if anyone has tried this combination out? I recently had a 7mm RUM built on a Rem 700 action and Chanlynn barrel. I had the reamer made so that I could touch the lands with the 180 bergers and still have full neck tension. I started out with 86 gr of Retumbo with the 180 bergers .020 off the lands and am getting around 3150 fps with no pressure signs. Im anxious to try the 190 Matrix and am wondering if anyone has had any luck with them.