And a couple questions in general about the rifle... what are the vertical marks machined into the bolt for? And on the rear sight, I know your supposed to use hemostats or needle nose pliers to adjust for elevation, but will turning the drum clockwise raise or lower bullet impact? Im assuming clockwise would move the drum itself up, and cause impact to drop? Seems basic but I cant get my head around it. All the sighting instructions seem to assume the shooter knows. Just curious what way to turn the drum to raise impact as most of these shoot low from the factory. Also, should I sight and shoot it on #2? I find the "open notch" to be worthless. Can't get a good sight picture, and the glare usually kills it anyways.