I heard that about Texas. Too bad really. Yep you need the AO if you crank the power up. seems to hit smaller groups anyway for me. I like cheaper scopes ..but they must hold zero and not fail me and Tasco has treated me very well and some of the older Centerpoint scopes made for air rifles. I have one Centerpoint on my 30-06 and it never moved in 10+ years. The new centerpoints I tried sucked.. shadows and reflections in the glass. Bushnells and the bass pro pursuit both died early deaths. Like 30 rounds and shook the guts out of them I was cleaning the garage today and found this from my drop testing. I am pretty sure the load is 8208XBR powder and 155 A-Max in winchester or Lapua cases. That scope was the 6-24x40 Tasco target varmint. I measured the 3 shot group at 1.260" at 300 yards.. that was the normal for that .308 right around 1.250" at 300 yards. I just could not get any tighter than that.. maybe that bullet runout was killing me. Good enough that I hunt turkeys with rifle and shoot them at 200-275 yards. We have a turkey fall gun season and in some counties a centerfire rifle is legal to use. Not really hunting as much as sniping them off. But it's food on the table. And you can't roost shoot them. That is not sporty anyway. There are many fields here 800 or more yards across on public land. Well a few trees here and there in the fields. So long shooting can happen. There is a clear cut pipeline near the red river that I bet is over 2000 yards long. I have walked and hunted it a few times and got deer, squirrel and hogs from it. The drag back is not fun. No vehicles allowed.