Regarding rifle scope quality, the only really good test I know of that those typically used in competition went through was back in the 1980's. John Unertl (owner of Unertl) got a couple of each and mounted them on a .308 Win. match rifle to shoot some test groups. The best of them would shoot the test ammo into about 1/2 MOA at 600 yards. Some about 3/4 MOA and a few about 1 MOA.
Then all of them were mounted on an M1A and 100 shots were fired under each one. The shock of normal recoil plus the shock of the semiauto's bolt going back into battery was considered a good test on their mechanics.
All the scopes went back on the match rifle and test groups were fired. None of the variables shot as accurate as they did when first tested; two Leupolds shot about 2/3 MOA. Two fixed power Leupolds held up very well and shot almost 1/2 MOA test groups. The only scopes that shot the same test group sizes they did before the shock tests were Weavers; a T16 and a T20.
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