Thought this might be of interest. It dates the adoption of the familiar style of cloth bandoleer to 1909, replacing an earlier type which was sewn shut. Likely the sewn design was probably necessary since Krag ammunition was issued as loose rounds packed 10 to a pocket with a cardboard insert having grid type partitions to keep the cartridges in position. M1903 ammunition was issued in 5 round stripper clips which were not likely to work their way out of the overlapped pockets, while loose rounds packed the old Krag manner would.
With minor changes in materials and size to fit newer calibers, the 1909 style bandoleer remains in use today.
U.S. Ordnance Department, Annual Report of the Chief of Ordnance, 1909.
“Bandoleer.- A new form of bandoleer has been designed which is cheaper, and answers all requirements better than did the old form. In the old form the pocket opened at the top. It was closed by a seam which also held a strip of tape whose ends protruded from the pocket. It was opened by tearing the tape. In the new form the pocket opens at the side, and the material overlaps at the opening in order to hold the clips in the pockets until it is desired to remove them.”