Follow along with the video below to see how to install our site as a web app on your home screen.
Note: This feature may not be available in some browsers.
I can confirm they tunnel. 1.8x-10 tunnels until about 2.5ish, 3-17 tunnels until ~4.5-5, and the 25x tunnels until ~8, give or take - similar to an ATACR.US Optics used to be the cream of the crop 12ish years ago, they always came up in the conversations alongside Schmidt & Bender and Premier Reticles. Someone did a detailed history of them a while back, there were ownership changes and then moving facilities to a new state and stuff like that. US Optics used to be more of a semi-custom shop, you could even design your own reticles and have them put it in a scope.
The Foundation series are an older design, still good optically but while longer scopes can be more forgiving, the 5-25 seems to be too long for most. They also have very limited FOV at bottom mag, so much I would say they likely tunnel but if published numbers are correct they open up very quickly after tunneling to offer very wide FOV at the top of the magnification.
Their pricing seems a bit high for older designs and since they don't have the name Schmidt & Bender or Nightforce on the side it's hard for guys to justify the cost of entry. That said, if you can find a used scope for a decent price you will likely be surprised at the performance.
^^^ That makes sense given their specs. Does FOV appear to increase quite a bit once you get past tunneling? Some NF ATACR's and the S&B 5-25 are pretty notorious for this.I can confirm they tunnel. 1.8x-10 tunnels until about 2.5ish, 3-17 tunnels until ~4.5-5, and the 25x tunnels until ~8, give or take - similar to an ATACR.
I mean, as you increase magnification it's obviously reducing FOV, but the FOV is very, very good once you're past tunneling. Depth of field is a bit better than an ATACR 7-35. I've never checked actual parallax, so I can't speak to that other than the eyebox on the 25x is narrow enough that it's hard to induce parallax and not see black ring on the side.^^^ That makes sense given their specs. Does FOV appear to increase quite a bit once you get past tunneling? Some NF ATACR's and the S&B 5-25 are pretty notorious for this.
Out of curiosity, have you found them to be pretty forgiving with regard to eyebox, DOF and parallax? It has been many years since I've had a USO (mine was a 3.8-22x44 IRRC)
Maybe they’ll sponsor you since you like them so muchThey are so great that no one uses them. You should buy 10 of them based on the recommendations of people who live in fantasy land.
Make sure you buy them new, so you can loose half your money when you try to sell it. Also, stock up on snickers because when you do try to sell it for half price, you may starve to death before it actually sells.
Don't forget to grab one of the 20 year old reticles, because classics never die.
Even better is the chinese OEM versions. The Profit margins must be insane on those.
Support USO, the two sponsored PRS shooters running them need that sponsorship money to keep rolling in.
Fantastic, that is what I was looking for.I mean, as you increase magnification it's obviously reducing FOV, but the FOV is very, very good once you're past tunneling.
I forget the 5-25 is only 52mm, that could be another limiting factor for some.The 25x has a 52mm objective, so it lags a bit in low light vs something like a Razor3 (incredibly bright in lower light by comparison), and the eyebox is tight. The 17x has a nicer objective:magnification ratio and the eyebox is nicer. I never got to take mine out in lower light to compare though.
US Optics used to be the cream of the crop 12ish years ago, they always came up in the conversations alongside Schmidt & Bender and Premier Reticles.
I keep my Nightforce for the low Parallax setting on a .22. If the FDN 25x or 17x had an 11yds parallax, I'd be running one of those on my .22 instead.The USO foundation series are great scopes. No issues with any of mine. The glass quality is superb. I think the JVCR reticle is the best out there. You won’t be disappointed.
The downfalls are that price is a bit high and the scopes are pretty long.
I would take one anyday over a Schmidt or Nightforce.
I keep my Nightforce for the low Parallax setting on a .22. If the FDN 25x or 17x had an 11yds parallax, I'd be running one of those on my .22 instead.
When you get ready to pick one up, let me know and I can save you a few bucks.The USO 5-25 came recommended by some former military guys on Arfcom. I’m thinking of picking one up for my next build.
@DeathBeforeDismount , I noticed you left a laughing emoji on my comment about the USO 5-25. I’d be interested in hearing your perspective as a PRS competitor. It doesn’t matter if a scope is more popular by the numbers, as Vortex and Leupold sponsorships can skew these.
I was genuinely curious if he had an educated opinion about the optic. I have my answerPlease don’t get him started…..
I've never tried a USO before, but I've got my sights set on the USO 5-25. Thanks for the vote of confidence.Former military... check
Arfcom......check
You should totally listen to them since both groups are known for being experts in long range precision optics......
I have already shared my opinion of USO multiple times here so feel free to search.