Canis Lupis,
Had some friends that shot it because it was plentiful and advailable. They were shooting it in a 223AI. We had a mutual friend that worked for a local law enforcement agency that gave use a lifetime supply of once fired Winchester brass for free. The guys shooting it in the 223AI's found it would work harden the necks after about 2 reloadings. So, they went back to LC. Since I was shooting a .223 they gave me all of the Winchester brass that they hadn't fireformed. I've been shooting it ever since. That was about 10 years ago and I still have about 10K cases left. The Winchesters definately aren't as good as the Lapua. If I were target shooting, I'd go with the Lapua. But, for varmints, the free or cheap ones are still getting the job done. I have about 10K loaded for varmint hunts @ all times. You can see this would be really expensive if you were using Lapua brass.
James