Smooth they certainly are, as-is the Model 71/1876 and model 71/1884? Mausers, also with one lug.
At some point after 84, a second lug was added, seems to me.

Makes sense the 6.5x55's were downloaded a bit for the Krag, as the CIP standard max. running pressure for that ctg.in a '96 is 55,000psi.
The 96's(94's) were also chambered for 9.3x62's at 57,000psi, and Tradeexcanada had a few that were barreled and chambered for the .30/06, a 60,000psi round.