What do you guys use when shooting off a bench and sighting in a rifle? For several years I had used an old Lohman gun vise that clamps down on the forend of the rifle. It always seemed to work just fine, but a last year I got a lead sled solo. For whatever reason, I shoot very inconsistently out of it. I have shot off of plain sandbags, but I never feel totally stable to know I’ve got the scope dialed in. Has anyone ever used the Caldwell Tackdriver sandbags?