Ammo may be tricky. Do you reload your own ammunition. If not you may need to. Ammo has not been generally available since the the mid 1930's. Some foreign countries may have produced it later than that. OWS (old western scrounger) may have loaded cartridges.
The rifle is pushing a hundred years old or more and some were known to have some issues. The bolt can be assembled incorrectly and it comes blowing back at the guy behind the trigger. How easy it was to do so ,and, how much of a problem it was is not known. I have read stuff that says it was almost impossible to assemble the bolt wrong and others that state it is a 50/50 chance if you don't know what your doing. Do your research carefully and if possible get some help from someone knowledgeable about the rifle and cartridge. I believe Terry Wieland wrote an article about a Ross he put back into service. If memory serves it had a lot of good info in it.