I have a Redfield Revolution (made in USA by Leupold) on my 243. I've had it...at least ten years. It's a good scope, but I think it's having repeatability issues.
I recently turned it all the way to the lowest elevation and back (157 clicks each way) to determine my "battlefield zero." Then, I turned it to max elevation and back to determine how much more elevation I had remaining. (43 clicks). Took it out to the range today, and it was about 3" low at 200 yards. Made 1.5 MOA or 6 clicks adjustment. Next shot was 3" high at 200. Next two were dead on and touching each other. Then I added 7 clicks and rang some steel at 300. Turned it down 7 clicks, and the next 3 shots were 3" high at 200. (Should have been back to dead on.) Made another 6 click, 1.5 MOA adjustment and the next 3 shots were 3" low. I then brought it back up 6 clicks, and the final 3 shots were 1" low @ 200.
Other than removing/reinstalling the base and rings (DNZ one piece base with built-in rings) with new locktite, is there any other troubleshooting I can do before condemning this scope? I've never had issues with it. Other than riding around in a Kolpin gun boot on a side by side, it hasn't had a hard life. Then again, this is the first time I've ever tried to shoot using the elevation knob adjustments. I usually just use the BDC reticle for the 300 yard shots and Kentucky Windage for everything else.
I wonder if Leuplod will even warranty this thing now that the Redfield name is dead an buried. I wonder what their turn around would be if they do warranty it. (47 days until hunting season opens.) Is this even worth repairing? (A comparable Vortex scope is $259, which is only slightly more than I paid for this Redfield 10 years ago.)