Lee,
Thats what I'm going to settle on is the Leupold 45! Between Leupold, Nightforce, and March, these are being shot with the most sucess!
One reason why I did not but a Leupold 45X is that I have read reports of issues with side focus Leupolds not holding stable parallax settings (lash). There has also been a problem with off axis crosshairs. Here is what was reported on Accurate Shooter:
Leupold Competition Series 35x, 40x, 45x
Pros: The best resolution, brightness, contrast, and largest exit pupil of any high-magnification fixed-power scope you can buy. Better lens geometry and clarity than any zoom. Turret covers and screw-in lens caps standard. Very good warranty service, not limited to original owner. 30mm tube offers more elevation adjustment than older 1″ Leupold Target Scopes or B&L 36x.
Cons: Unstable wire reticle may require after-market modification. Leupold is shipping too many with off-axis cross-hairs–look before you buy. Lash issue with side focus.
OVERALL: BEST FIXED-POWER SCOPE under $1200. Even with its flaws, still the best fixed-power competition scope you can buy, short of the $2150 March. Leupold needs to do some technical re-design and ensure the scopes ship with plumb cross-hairs.
But then I have owned several scopes that had off-axis crosshairs, including a Weaver T-36 that I sent to Weaver for a fix. I bought the Weaver XR T-36 for several reasons, including budget issues. I cannot pay $1000+ only to find problems that require sending the NIB scope for repairs.
As to other fixed power scopes, the March scope has gotten the best reviews of any:
March 40×52 BR
Pros: Benchmark level resolution, lack of distortion and brightness out to the edges. Noticeably superior and brighter at the edges of image to the Leupold Comp BR scopes. Tracking reliability may be the best ever offered to the public in a scope with active internal adjustments. Many of the top benchresters have switched to the March because, so far, it holds zero like nothing else. For long-range use the March 40x can often resolve 6mm bullet holes at 600 yards when viewing conditions are very good. No scope out of the box does a better job at that (until the Schmidt & Bender 12-50×56 arrives in 2008).
Cons: Extremely expensive. Kelbly’s is currently the one and only supplier in USA. Long-term reliablity is a question mark. No USA service facility.
OVERALL: BEST FIXED-POWER SCOPE, bar none. Very bright, very sharp, reasonable weight, excellent image quality.
If some shooters are getting better results with the Leupold, I would say that other factors, including load development, the wind reading skill of the shooter and other high end equipment are probably cause, rather than the scope. I know my SEB NEO rest has caused a greater obvious improvement in my results than any scope ever did.
Once again, other than someone with a disability like mine, that makes side focus for me a necessity, I cannot see any advantage for side focus scopes. If I could adjust parallax without side focus, I would still own the Leupold BR 36 (bumped to 50X) that I sold to but the Weaver XR T-36. All of my best results are still with that old Leupold.