My son and I both have CVA muzzleloaders, one is the optima and the other is a kodiak. I was shooting some the other day and noticed my scope need to be moved down, but the ramp of the rear sight wouldn't allow it to go any further. I took the ramp off and the screw hole doesn't go all the way through the barrell. Is it safe to leave the screw out of the hole? The screw hole on both guns don't go all the way through the barrell. I just didn't know and figured you guys would be on top of it.