Rosses....... there isn't enough space here to say it all.
When I started shooting in competitions, I was banned from shooting because I had a Ross: the young guys were scared the bolt would blow back and the old guys said that having a Ross was "unfair" to them (they had scopes, I had iron sights). So I went to the gravel pit and I'm still there, having fun.
Most Rosses will shoot very darned well indeed, given that the bores have been preserved. That wonderful trigger was STANDARD on the M-10 and there is nothing else like it.
I have 15 of them and have test-shot 5 of those in the last 6 months. Still a few to go, eh?
If the thing is put together right in the first place, it will NOT get out of whack by itself. The M-10 (Mark III) did have that problem; the pins observed in bolts are NOT there to prevent disassembly, but rather to make improper REASSEMBLY impossible.
NOT ONE of the Great War veterans I ever talked with had anything seriously bad to say about the Ross. Worst I ever heard was from a man who made it from Private to Captain, with a DCM from Regina Trench. "The Ross Rifle was unpopular, due to its length and weight. You couldn't get into a dugout with your rifle slung. We had NO trouble with the Ross Rifle, but we kept our equipment CLEAN, unlike some other outfits." Capt. George Dibblee, DCM, A Coy, 5th B'n, Canadian Mounted Rifles.
I have absolutely the greatest respect for the Ross Rifle and only wish I could afford to buy up all those sporterized and Bubba-ized ones out there.
I don't know any other military surplus rifle, 90 years old, that I can take to the range and EXPECT half-minute groups with original sights.