Below are some articles with some discussion of the Krag as it relates to the Springfield and the Enfield during the Great War by General Crozier. The first link is from a House Subcommitee on page 724. The second link is from a December 1917 "Iron Age" periodical on page 1513.
https://www.google.com/books/edition/Ur ... frontcover
https://www.google.com/books/edition/Ir ... frontcover