Everyone talked about the cheap Carcano rifle
and they certainly were cheap at that time.
They were however used by the Italian Olympic team
so some them were probably very good.
A rifle sighted at 100 yds will only be an 1/2inch or less
out of line at 50 yds and dead on again at 20 yds.
70 yds with a scope? Certainly doable.
Then again, I’m no sniper, I am a former Marine though.
Ballistically on paper, yes. Practically with old WW2 issue ball ammo, most period rifles were capable of 3-6 in precision, or in common tern 3-6 MOA at 100yds
At 70 yards a human head is about 10MOA. A perfectly zeroed rifle theoretically could keep its rounds within that size target.
But I think it unlikely, being a trained sniper and competitive rifleman,that the shots could be done in rapid succession and with repeated precision and accuracy.
Yes, I watched the documentaries stating otherwise too.
Today it is more likely, as even I can put 6 or 7 of 10rounds into the 2.7 inch X ring prone at 300 yds in rather quick succession with my AR15A4 service rifle. But not as fast nor precisely with my M40A5 clone in 762 NATO/ 308 Win which would be recouping similar to the 160 grn 6.5 bullet in a Carcano carbine.
But, we may see someday.
***the cheap Carcano rifle***
The Carcano got a bad reputation when during WW II the Italians adopted a different Caliber rifle.
So, when Americans took them as souvenirs and loaded them with the wrong ammo, the rifle blew up.
I am sure if you have not shot a rifle in 20 years, then you would do pretty well on a range. Thanks for your service. One of my fondest memories in college was entertaining a Marine Dinner at the Naval Armory nearby to school. One of then was a teacher at my school, but I never had him. Not my major.