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Thoughts on Sightron SII 4-16x42 AO

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Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: January/27/2011 at 07:47
tpcollins View Drop Down
Optics Apprentice
Optics Apprentice


Joined: January/12/2009
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I want to add a bit more power to my .243 for varmit hunting and I like either the Nikon Monarch 4-16x42 and the Sightron SII 4-16x42. The Nikon has the side focus and the Sightron has the adjustment on the objective. Per reviews the side focus is a bit coarse/fast whereas the objective adjustment is a bit slower/finer. My only AO experience is a little Bushnell Banner on my .22 and it seems easy enough to use.

Pricewise I can save a few dollars on the Sightron at the moment. Since I'm not familiar with this brand, I was just wondering what the forum's thoughts/issues are with the Sightron? Thanks.
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: February/04/2011 at 18:09
Alan Robertson View Drop Down
Optics Master
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Joined: October/31/2009
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I have the SII Big Sky 4-16x42AO w/duplex reticle and the covered- target turrets. It has 1/8 click adjustments rather than the typical 1/4 click. It also came with a screw-on sun shade.
It has very good low- light performance and very clear optics. Mine has never been mounted, but I've compared it a lot to other scopes I have and believe that it has as good glass as anything in it's class.
The ONLY thing I don't like about it is the fact that eye position gets a bit twitchy and is more critical than other scopes I have. It has great 4" eye- relief, but it will 'wink out' and go black- screen on you if you don't have your head positioned just right. This isn't really a drawback for this type of scope.
All scopes do this, of course, but the Big Sky seems to be quicker to go black if you move your head wrong, most noticeably at higher powers, not so bad down low, but still quick.
This phenomenon isn't such a big deal with this scope as it's made more for target shooting or long- range hunting, where critical head placement wouldn't matter. One wouldn't be stalking around on 16X with this scope anyway, which is good, because you'd have heck getting on target quickly due to the head- position thing.

The Big Sky low-light performance is better than Conquests or anything else I own in this scope class in the light brown- tan- yellowish color spectrum. I've been able to see light tan twigs in near- total darkness that my 4200 or Conquests couldn't resolve, and tested this many times and under different light conditions before I would believe it (I'm a Conquest fan.)

I would have had that scope mounted a long time ago, but got into some trading about the time I bought the Big Sky and it doesn't have a rifle to sit on, right now...   All of my observations are hand- held and twistin'/fiddlin'. I can't speak to its performance at the range, or toughness, turret repeatability, etc.

One other thing- the 42mm objective 'bell' is greater outside diameter than a Zeiss 44mm objective bell.
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