I bought a Swarovski Z-3 4-12 with turrets here on the Campfire and put it on a Sako 6mm PPC single shot rifle. Then Rancho and I headed to the gopher fields to sight it in.
I shot at little white rocks while he spotted me and zeroed for 100, 200 and 300 yard rocks. I then started shooting gophers and the following weekend took it on the prairie dog invitational and shot prairie dogs all weekend, out to 400 yards with it.
I used the same ammo I had already loaded for both PPC rifles I have, and shot quite lethally all weekend without ever shooting a piece of paper. I guess you could say I got good equipment and went shooting, or I got lucky.
Doesn't really matter, I have a bunch more guns I have done the same with and never worried about paper...