We are mixing sniper rifles with service rifles.
Of course the Model 70 target rifle will out shoot any of the service rifles used in WWII, and I'd say they can hold their own with the modern sniper rifles we have today.
But 70 years ago????? The Unertl scopes were too fragile and had too much power for most conditions.
The Commandant of the USMC, Lt Gen. Alexander A. Vandegrift (who commanded the ground forces during the invasion of Guadalcanal Campaign ordered the Unertl contract canceled and the marines were issue the Army's M1903A4s. They were much more effective in jungle warfare then the Marines M1903A1s with the Unertl.
It should mean something that there were about 1800 a1's with Unertl's adapted vs. about 24,000 "A4s.
Yeah you hear about some extreme long range sniper shoots but they were rare as hen's teeth. You don't hear about the misses...........people don't brag about misses.
In reality, in SE Asia (Vietnam) the average sniper shot was less then 400 yards. It was the same in the South Pacific in WWII..........AND.......if you read of todays sniper's its the same in Iraq and Afghan.
The problem with WWII scopes is they weren't sealed. They would fog if care wasn't used.
If interested, Joe Poyer put out too books, "Collecting the American Sniper Rifle 1900-1945" and "Collecting the American Sniper Rifle, 1945 to 2000".
Excellent reads.
As to service rifles, that being Arms Room Guns you will find at the unit level; I am convinced the WWII guns are more accurate in the "as issued" condition then todays "as issued" M16/M4s you find in the arms rooms today.
I think the A3 and Garand are the most accurate. In pure accuracy the 'A3 has the Garand beat, but the sights on the Garand give it the edge. I would classify the M14 with the Garand. Not the M1A, because there are no M1A arms room guns.
But as a combat rifle, its hard to beat the M16 series, if one learns to use them they are accurate, but when it comes to firepower, they have the A3 & M1's beat. Not to mention the cost, today you couldn't build a Springfield or Garand as cheap as you can M16s.