I have two very nice J.W. Fecker 3/4" tube scopes, which were made a few years apart. Both are in great shape and are 20.5" long.  Neither exceeds the dimensional limits imposed by NRA rules for silhouette competition.  They also have very nice non-click rear externally adjustable mounts, also an NRA requirement.  I do intend to use them for NRA sanctioned matches.  The power (magnification) is not marked on either scope, but by using two separate measuring techniques I verified that one is an 8X and the other is a 10X, which was somewhat of a pleasant surprise since, as far as I know, modern day suppliers such as MVA or RHO only offer 6X maximum.

This brings me to another surprise and a question.  Fecker scopes have a central adjustment, which I was led to believe was for parallax.  I understand the benefits of parallax adjustment, but expected the adjustment to only affect parallax with little or no effect on image focus or quality.  But the adjustment has a major impact on the image focus and must be adjusted when viewing images at different distances.  Although I have never used a modern day internally adjustable scope with parallax adjustment, I did not expect parallax adjustment to have such a dramatic effect on image focus.  This leads me to a couple more questions.  Does the parallax adjustment on MVA scopes have a similar affect on the image?  Is the central adjustment on Fecker’s really a parallax adjustment or is it intended primarily to focus the image?

Wayne