To my knowledge, most of the S&W target stocks with dual speedloader cutouts were used on guns with some sort of embellishment on the side plate that would be partially hidden without the second cutout.



The center gun in that photo is a 5" 686-3 National Match with a silhouette target laser-etched into the side plate. A normal set of stocks like those on the other two 686-3s would cover the lower left corner of the target.

Ed