There is a thread in the reloading section where I posted the following. I thought it might be fun here since it is about optics. I switched out the Bushnell 4200 4-16X40 to the Swarovski z5 5-25 so I could more easily see the 300 yard groups.
Today I put a very cheap B-square bi-pod on the Savage .257 Weatherby and shot it at 300 yards from prone. The first group measured 1 3/4" and was at 2 o'clock about 2" out. I made an adjustments on the Swarovski z5 for windage of two clicks left and fired it again. Something hit my face so I looked around to see if I could see what it was. There was a little piece of shinny metal so I picked it up and what do I find? A little raptor looking thing which looks familiar. Then remember where I saw something like it before: On the side focus of the z5! I look and low and behold there is a negative that fits this little positive on the side focus.
Anyway the next group was too far left so I moved it back one click only to discover nothing moved when I fired three more rounds. I made an adjustment for vertical and it moved; except I moved it up instead of down.blush I moved the windage and it still didn't move. I moved the vertical again and the elevation came right in.
Anyway I fired five groups of three shots each. The best was 1 1/2" and the worst was 2 3/8". Tomorrow I will go verify the sightin when it is not so hot. The temp went to 85* before 10AM.
You folks who tell me we get what we pay for need to check out the windage on this z5. I hope it is right on tomorrow.
It sounds like you have an internal problem in your scope.
On safari a few years ago, at the end of the hunt, my PH had a Z6i 1-6X on his client rifle, a Model 70 in .416 Remington. He said it would not respond consistently to adjustments. I shot it, and he was correct. I took the scope back home and sent it to Swarovski for service. Before sending it in, we removed the Talley QD mounts that were so overtightened, a few of the screws had to be drilled out by a local 'smith. Swarovski USA in turn, after looking at the scope, sent it back to Austria for re-building.
To make a long story short, when my PH self mounted the scope, he failed to use the proper alignment tool to assure complete concentricity and failed to lap the rings so that everything was perfectly concentric. Then he over-tightend the mounting screws in the un-aligned rings to such a degree that he imperceptibly bent the tube and damaged the internal parts in the process. Swarovski replaced the tube and essentially rebuilt the scope for about $350, as this was no fault of the scope and was a clear case of improper (and over-enthusiastic) installation.
It takes a gunsmith (or someone completely familiar with scope installation) with the proper tools to correctly mount a scope. The kid behind the counter at Joe's gun shop should not be trusted with the job.
I'm not saying your installation wasn't properly done, but I suggest you send the scope, minus the rings, to Swarovski and have them service it. Their Service Department is excellent and reasonably prompt.
Let us know how it works out.