A Beretta o/u rib is normally a solid type rib with vents cut in, not individual posts attached to the barrel like the Remington shown with the tool. The wedge will work well on this rib, no need to clamp on either side of the dent. I make small brass wedges and use two, one from either side, stacked. Then use a clamp to force the wedges together so the dent comes up evenly.
