Buffalo arms has cases
http://www.buffaloarms.com/280_Ross_Reloading_Brass_it-156960.aspx?CAT=3834midway has a die set on sale
the nominal bullet diameter is .287
back when, I had one that was inaccurate with any .284 bullets but shot a heavy .287 gas check quite well (2"@100 with iron sights)
The M-10 bolt could, with great effort, be assembled incorrectly so that the interrupted thread bolt head would not rotate and lock.
here's a good thread on ross rifles:
http://www.doublegunshop.com/forums/ubbthreads.php?ubb=showflat&Number=145361&page=allthis is the rifle magazine you want:
https://www.riflemagazine.com/magazine/index.cfm?magid=19interesting rifle way ahead of its time and the bullet construction of that day.
wish I had never sold mine !