I've had bench rest shooting, and for that matter bulls eye pistol shooting, greatly affected by how I held the firearm. I had a 4-in Security Six that I always shot better with Pachmayr grips. I thought they were ugly but wood grips didn't work so good with me. I came to the conclusion that there are a lot of variables involved with target shooting and a lot are personal. I'd hand a rifle or pistol to a buddy who would shoot groups to a different point of aim than I did with absolutely no adjustments made to the sights. It could be that you just warm up to fat forearms better than you do to schnable tipped forearms.
