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US Optics SN-3 3.2-17 Rifle Scope Review

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Old 08-02-2011, 08:33 PM
Bronze Member
Join Date: Aug 2008
Location: Austin
Posts: 39
US Optics SN-3 3.2-17 Rifle Scope Review

Review of the US Optics SN-3 3.2-17x44

USO scopes are all handmade, to order in Brea, California,
They have earned a reputation for building some of the finest optics in the world with an emphasis on extreme durability.

It is nice to be able speak with someone and go over your intended use, likes and dislikes and come up with a scope that is built for YOUR needs.
Not what some marketing guy THINKs you need.

Typical build time is a few months and I can honestly say, well worth it.

Gap Mil reticle
EREK elevation
capped windage
digital red illumination
ERGO focus
44mm objective

On top of my LTR with a jewell trigger and a Manners Precision MCS-T stock with 4 color digital camo

A side view of the scope showing the new digital illumination system.

The EREK knob.
This is in 1/10 mil clicks with 9 mils per revolution (two total revolutions available)
Running a 100 yard zero with my 308 and 175g Sierra Matchkings at 2575 FPS I need 10.5 mils of correction to hit at 1K.
I go one full revolution up from zero and continue on to hit the 10.5 mark that is etched on the dial (top row)

With the EREK zero stop you are able to set a hard stop at your desired zero (100 in my case) and be able to instantly return to it.
I tested the scope's adjustments for tracking both windage and elevation numerous times and they were always spot on.

Capped windage knob

View through USO SN3 3-17 at 3x, 500 yards in foreground, 750 high right and 1K in distance

AT 10x, 500 yards in foreground

at 17x at 1k
Amazing scope


I have been running this scope for some time now while I have not abused it, nor do I intend to, by all accounts USO builds extremely tough and reliable scopes.
I am extremely impressed with this optic, the glass clarity is outstanding, the adjustment knobs track 100% true.
I like the Mil Gap reticle which is their most popular. I dial in elevation for long range and hold for windage.
The Mil Gap reticle is easy to know where you are at and not have to be hunting for it.

This scope came with the brand new digital illumination system which is a little too bright at it's lowest setting for truely low light conditions.
USO accepted feedback very well from the shooting community and came up with a new system that has fewer steps of brightness as well as lower, now NVG compatible brightness.
This is a user replaceable item, nice to be able to not have to send a scope back should you wish to change to the new system.

This is a fantastic scope and highly recommended.

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Old 08-03-2011, 11:12 PM
Gold Member
Join Date: Apr 2010
Location: NW Mt.
Posts: 600
Re: US Optics SN-3 3.2-17 Rifle Scope Review

I've had a couple of them for more than ten years. Hope to add another someday.
Just what you have with a moa reticle.
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Old 01-07-2013, 10:25 PM
Junior Member
Join Date: Jan 2013
Posts: 1
Re: US Optics SN-3 3.2-17 Rifle Scope Review

What range are you on? I noticed that your location is Austin. I live in San Antonio, and cannot find a range (other than my Aunt's ranch) that is over 100yds. I just got a .338 Lapua and am looking to put the same scope you have (but with the H37 reticle) on it at some time in the near future. Any reply back would be much appreciated!
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Old 01-08-2013, 10:13 AM
Platinum Member
Join Date: Feb 2010
Location: Gillette, WY
Posts: 2,844
Re: US Optics SN-3 3.2-17 Rifle Scope Review

For some reason the USO doesn't get as much "love" here in the hunting community. The tactical crowd can't say enough good things about them.... I've always been intrigued by that.

I just bought my first USO the SN-3 T-Pal 3.2-17 IPHY/IPHY. These things are built like tanks, I had always thought my NightForce was impressive.... I'm pretty sure I could beat my NightForce to death with the USO.

The EREK knob is a little funky to zero & set the zero stop but, as long as you read the directions you're fine.

I will be adding more as expenses allow. the 3.8-22 will most likely be next. After jumping from VX-III's to MK4's to the MK4 M5-A to the NightForce, I may have finally found the one scope I am willing to purchase again. Time will tell.

"I, however, view ethics as an individual decision. My ethics are mine - and I won't explain or justify them to anyone else. I seek nobody's approval, just that of my own conscience. "

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Old 01-17-2013, 07:30 PM
Junior Member
Join Date: Dec 2012
Posts: 11
Re: US Optics SN-3 3.2-17 Rifle Scope Review

Thank you for the post , looking to purchase US Otics as my next scope ,geoff3
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