Unless I missed it, I did not see any mention of something really critical on a DG rifle: eye relief. For high recoil rifles, every 1/4" counts...
My .416 Rigby wears a Leica Visus i 1-4x24 because:
- It has the best glass money can buy. Schott glass made from Baltic Sea sands is the best in the world, period. This is well recognized in the scientific instrumentation community. I do not know what is geologically different with the Baltic Sea sands, but the glass they produce is better. This is what made Zeiss famous to begin with...
- It has the best glass coatings money could buy at the time. I reckon that every new generation (Magnus, Victory, Z8, Exos, etc.) improves incrementally on this front.
- It has all the magnification at the high end (4x) that I could ever want on a .416.
- It has 1x magnification at the low end, which allows me to shoot very quickly with both eyes open, up-close.
- It has a daylight-visible red dot, which is a little faster to focus on than the crosshair.
- It only has a 24 mm objective, which is not great for light-gathering capability, but that it is OK because I will not shoot elephant, hippo, or buffalo at dusk;
- Most importantly: it has the shortest ocular eye piece (3”), and the longest eye relief (4”) of all the straight tube scopes that I know off – many have these two numbers reversed - so it is virtually impossible for the scope to hit me under recoil during a snap shot. An additional 1/2" of eye relief is HUGE on a DG rifle that can see snap shooting... Swarovski used to have a specific EE (Extended Eye relief) Z6 1-6x24 scope for DG rifles. Sadly they discontinued it.
Conversely, my .375 H&H, which is more versatile than my .416 Rigby, wears a Leica ER i 2.5-10x42 for all the same reasons except:
- It has all the magnification on the high end that I want on PG. I typically use 6x out of old habits and virtually never use 10x, but it does not hurt being there.
- It has a 42 mm objective, which I want, because the .375 H&H can be used at dawn or dusk (leopard on bait is the perfect reason why a 42 mm objective is desirable). This mathematically guaranties me that at 6x I will have a 7 mm light beam reach my eye at full pupil dilatation in low light (42 mm / 6x = 7 mm beam). A 24 mm tube at 6x only gives me a 4 mm light beam. This is OK in full daylight when my pupil shrinks to about 3.5 mm, but it is only just above half of what my eye could use at dusk and dawn.
I have a number of Zeiss, Schmidt & Bender and Swarovski purchased between the 1980's and up to the early 2000's. Side by side comparison shows that Swaro circa 1980 was visibly behind Zeiss and S&B; S&B mechanical assembly was already (and still is) second to none; and Leica circa 2010's had the best glass. I also have a recent Z3 on a .270 PG rifle, and the progress they have made compared to the 1980's is fantastic, but I still see nothing better than Leica right now, as far as glass is concerned. Japanese Zeiss are just fine but not at the same level, and Chinese Zeiss are also great but also not at the same level, and you get into glued plastic as opposed to screwed metal.
For a .404, one could still consider a 42 mm objective, but most will go with a straight tube. Based on what you can afford, I suggest:
- Leica Visus 1-4x24 or more expensive (i.e better coatings and larger variability range) Leica Magnus 1−6.3x24;
- Zeiss Conquest V4 1-4x24 or more expensive Zeiss Conquest V6 1.1-6x24;
- Swarovski Z6 1-6x24 or more expensive Swarovski Z8 1-8x24;
- Schmidt & Bender 1.1-4x24 Zenith or more expensive Schmidt & Bender 1.1-5x24 Stratos or Schmidt & Bender 1-8x24 Exos
I would put made in Czechoslovakia Meopta and made in Hungary Schmidt & Bender Klassic in a different category, just like made in China Zeiss Terra, or made in Japan Zeiss Conquest, or even made in US Swarovski Z3 are, compared to their German or Austrian Victory, Z8 or Exos high end counterparts. This is not due to QC, or quality of labor, etc. but it is due to the latest and greatest coatings formula and vapor deposition technology that are typically not exported by the parent companies.
Yes, Leupold will work just fine, and so will others, and you will never know the difference between a top line Leica/Zeiss/S&B/Swaro and a Leupold until you look through them, yourself, side by side, during the first 15 or the last 15 minutes of light in the day. Then you will be like those of us who did it, and you will say: "Dang! I had no idea!"
Admittedly, there is very little difference, if any, at bright high noon.
Truly, this is the catch: you really do not know what you miss, until you do. Then you can never go back...
And this is not brand snobbery. I will take a Magnus, Victory, Z8, Exos over a Leupold VX-6, but I will take a Leupold VX-5 over a Zeiss Terra any day...