To "Redhawk 1" and "Dave in WV", and anyone else who cared about this topic.
I am starting a new topic on this deal, because it has been a while since I originally posted and did not know if you monitored the old posts.
As you recall, I decided the new Leupold VX III in 2.5-8 was to blame for poor groups, when I replaced it with a used Zeiss I had on hand and the rifle shot fine. This was a Winchester Model 70 synthetic in 338 Win Mag.
Leupold rebuilt the erector system on the scope, and said the problem was repaired. It should be here in a couple days. This all happened within a few shots, maybe 20 at the most, on this new scope. However, it took me several boxes to really figure out what the problem was.
The very small amount I tightened the front base screws after removing the Leupold was probably needed, but was evidently not the problem.
I guess every top brand can have a lemon.
I am still a Leupold fan. I own another 2.5-8 x 36, plus a 4 x 33, and their excellent 12-40 spotting scope. All my guides want to pack my spotter and leave theirs in camp.
I have not decided whether to put the Leupold back on this rifle, or just leave the Zeiss on and use the Leupold on something else. I suppose I should check it out to be sure it is really fixed, but I am getting to the place where I need to get the load work done for my hunt instead of playing with scopes.
Thanks for your input, and have a great day.