Publius, I have a friend who has several rifles with the Leica 4.5 x14 scope's on top. I have hunted several times with these scopes and shot a lot of game at his lease down in Mexico, including a tropy nine point White tail buck with a 20 inch wide inside spread on his rack.
I own a bunch of Elite 4200's in various configurations, the Leica's are supperior and some of the best glass I have ever looked through.
I was so impressed with these scopes I did some research to buy one for myself, I found that the glass is a leica product with Leupold tube and assembly and they are no longer made. The interesting thing about these scopes is that they are a variable power that is always in focus, but as far as parallax adjustment there is a an adjustable ring on the front of the scope that has yardage marks just like a front focus ring but it's only purpose is to adjust for parallax.
This is a true story, while sitting in a deer stand overlooking a feeder I spotted a Bobwhite Quail sampling the corn under the feeder, well, my 13 year old son went ahead and challenged this here worn out old dad of his to shoot that quail, I adjusted the parallax setting on the Leica to 200 yards sitting atop the pre 1964 model 70 Winny in .243 shooting factory loads. I rested the gun on my hand at the edge of the enclosed deer stand and fired away, after the dust cleared there was Mr. Bobwhite laying on his side giving a last few get away kicks to no avail. When I saw the bird laying there kicking I wondered how that could be after being hit by an 85 grain .243 cal bullet.
Anyway, as lunchtime approached and we met down at the feeder area and we gave our unfortunate feathered friend a good looking over and found the bullet had juast grazed the back of his neck preserving all his meat for our dining pleasure. There was only one problem, my great quail shot turned out to be a meadowlark instead of a tropy Bobwhite. I certainly heard about that back at camp.
I have never seen another scope like this anywhere. For what it's worth, my friend also has newer leica binoculars, we used the rangefinder inside of his Leica bino's to range from the deer stand back to the dead yard bird and it turned out to be 206 yards, not bad for using someone else's rifle in a foreign country. The Leica bino's, are simply the most amazing product you can put in front of your eyes, I can't see how any earthly product can enhance your vision better than Leica bino's. If Leica makes scopes again I hope to get one as soon as I can afford to.
Thats my story and I am sticking to it!