Once again, using a Glenfield Model 70, my Viet Nam era Army D.I. (FT. Polk, LA) bro-in-law who hasn't fired a rifle in 40 years shooting at 100 yards with cheap bulk Federal ammo, kept 150 rounds in an eight inch bullseye.
He was stoked!
These sights ROCK:
http://www.tech-sights.com/
You should get them!