I had a Remington M788 in .308 for 14 years, bought it in 1979, fantastic rifle. For a 5 year period I used to put a 1000 Canadian 7.62mm Ball through it each year. After 5 years it still gave groups of 1 1/4" at 100 yards.
I shot my bragging shot with a Remington M788 fitted with a Bushnel/Banner 4x scope fitted with a BDC. I was using Remington 150 grain Core Lokt. I was hunting on the prairies and only able to get within 450 yds. I got into the prone, snuggled up to the stock, dialed into 450 and gently squeezed. 6 pointer mulie buck, 1 shot, heart shot! He went straight down. I never started out hunting season unless I had fired a minimum of 200 rds in practice for that year.
If you have an opportunity , buy one, great guns. But then gunkid isn't capable of mastering that type of firearm!
And this guy proposes to have "A vast knowledge of all types of guns" ? 7.62MM is used in MACHINE GUNS that range out to 1,000 METERS. In a quality bolt action rifle, not a heavy barreled sniper rifle, just a good rifle, I would expect regular hits out to 500 yards. Sheesh! Where does he get this stuff?