So it sounds like there was only the one rifle that was given for trials and it was chambered in 30-40 Krag I'm guessing. Even though it's stated that it must be 30 cal I think the musket they sent was more than likely modified for 30-40 Krag since thats what they were asking for if the rifle had won.
I'm going by the article Jed sent me but specs on the gun sent by Savage say it was a 9 1/2 lb full stocked rifle with a gov't Krag bbl cut to 28" and that the receiver was lengthened to handle the new 30-40 gov't cartridge. As already said the receiver was really made by Pratt and Whitney.
Come to think of it a bunch of us must have that article. If you look at the top of the first page you can just barely see the words "recv'd from John Callahan 1996".
