Found this from a very reputable site...
The accuracy of an SKS was checked by firing 3 rounds at a target and if it obtained sniper quality it was marked on the front of the front sight base with the number 1, with #2 and #3 as accuracy decreased.
http://www.carbinesforcollectors.com/sks.htm
That site has no soild proof "just babble" NO army in there right mind would waist money gradeing a combat rifle


















































