They were issued to Canadian soldiers during WWI, and are very accurate rifles, more accurate than the Lee Enfield No1 MkIII. In fact the Ross rifle was more often used as a sniper rifle.
They did not like to get dirty, such as mud and sand, so they were a nightmare to maintain in the trenches. They were made with tight tolerances and debris would render the action inoperable.
They are a true "straight-pull" action, and if the bolt is removed for cleaning or service, it is critical to re-assemble the bolt head correctly.
If the bolt is incorrectly assembled and put back into the action, the bolt more likely than not, will not lock when fired, and subsequently travel through your skull. A most unpleasant experience.
It would be a great weapon to restore if you could find original wood (stock and hand guard).