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Rifle Scopes USO Windage #1 Versus #3

pc3

Sergeant
Full Member
Minuteman
May 26, 2008
775
3
Australia
Any advantage of one over the other for windage ? I figure for a hunting rig where your not dialing wind all the time you may be better served with the #1 and the dust cap.

Any reason why you should do #3 over #1 ?

cheers pc3
 
Re: USO Windage #1 Versus #3

You have it right. Go with the smaller US #1 windage knob and keep it covered with a dust cap.

Another problem I've had with my US #3 is that my brass cases hit it upon ejection. Another reason to go smaller.
 
Re: USO Windage #1 Versus #3

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: pc3</div><div class="ubbcode-body">Any advantage of one over the other for windage ?</div></div>
As with most things, it really comes down to personal preference. Something to consider is whether your scope will be MOA or MIL and if "uneven" adjustments will bother you.

For instance, the U.S. #1 knob gives you 48 "clicks" while the U.S. #3 gives you 50 clicks. So in terms of adjustments types (MOA or MIL) the U.S. #1's 48 clicks give you a nice even 12 MOA (in 1/4 MOA clicks) and 24 MOA (in 1/2 MOA clicks).

Those same 48 clicks of the U.S. #1 will give you an "uneven" 4.8 MILs' (48 x .01 MIL = 4.8 MIL), which may or may not bother you. YMMV.

A U.S. #3's 50 clicks will give you "uneven" 12.5 MOA (in 1/4 MOA clicks) and 25 MOA (in 1/2 MOA clicks) Windage totals, but a nice even 5 MILs' in .01 MIL clicks/adjustments.

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: pc3</div><div class="ubbcode-body">I figure for a hunting rig where your not dialing wind all the time you may be better served with the #1 and the dust cap.</div></div>
Do you really ever dial <span style="font-style: italic">"wind all the time"?</span> While you may dial wind less frequently while hunting IMHO the best reason to get the U.S. #1 over the U.S. #3 is that the dust caps protect the knob, ensuring that windage setting doesn't get bumped, inadvertently changing your POI.

Also, while <span style="font-weight: bold"><span style="font-style: italic">glock24</span></span> said <span style="font-style: italic">"Another problem I've had with my US #3 is that my brass cases hit it upon ejection"</span> I think you may find that case deflection is more a matter of knob positioning over the ejection port rather than a U.S. #1 versus U.S. #3 thing.

IIRC, the U.S. #1 Knob and the old style Illumination rheostat use the same size dust cover, and I used to have empties bounce-off the dust cover of my SN-3 3.2-17X, which had a 35mm tube and was mounted in Seekins LOW (.950") Rings.

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: pc3</div><div class="ubbcode-body">Any reason why you should do #3 over #1 ?

cheers pc3 </div></div>
See my previous two quotes and answers above.

Keith
 
Re: USO Windage #1 Versus #3

If you dial a lot of wind often then the #3 is better. Also if you add the stop to it there is no effin way you can get off a turn.

In fact, because the #3 covers so much ground versus the #1 you won't get off a turn with a #3 even without a stop. I have one with stop and one without. Never got lost on the one without.

Nowadays though I run a covered #1 and hold for wind, keeping the cost of the #3 upgrade to be used for reloading components.

Remember too that the #1 can be covered and the #3 cannot, if that matters to you.
 
Re: USO Windage #1 Versus #3

Not to be contrary, but don't the #3 turrets give 105 clicks per turn (I know the elevation ones do), so I'm pretty sure a #3 windage with stop give 5 mil of adjustment each way (and would be 12+ moa each way if 1/4 moa).
 
Re: USO Windage #1 Versus #3

Yes the #2 gives 5 mils of wind each direction of center with the stop. So just over 10 mils of wind per rev.

The #1 I believe is 2.5 mils per rev.

Nothing contrary there 883.

The #3 with stop is marked as 5 mils either direction of zero.
 
Re: USO Windage #1 Versus #3

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: sobrbiker883</div><div class="ubbcode-body">Not to be contrary, but don't the #3 turrets give 105 clicks per turn (I know the elevation ones do), so I'm pretty sure a #3 windage with stop give 5 mil of adjustment each way (and would be 12+ moa each way if 1/4 moa). </div></div>
If you <span style="font-style: italic">intentionally</span> (most posters boneheadedly click on the last reply in a thread and inadvertently reply to the wrong person in threads) replied to my post, I'm not sure where you are coming from as I never said that the U.S. #3 does not provide 5 MILs of Windage (.01 MIL clicks/adjustments), or that the U.S. #3 does not provide 12 MOAs' (1/4 MOA clicks).

In fact, not only did I state these points in my post above, but I also mentioned that the U.S. #3 provides 24 MOAs' (in 1/2 MOA clicks). Reference this paraphase of my self-quote:

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Aries64</div><div class="ubbcode-body">
...A U.S. #3's 50 clicks will give you "uneven" 12.5 MOA (in 1/4 MOA clicks) and 25 MOA (in 1/2 MOA clicks) Windage totals, but a nice even 5 MILs' in .01 MIL clicks/adjustments...
</div></div>
I used to have an SN-3 3.2-17X ERGO with LH U.S. #3 M40 type Windage with STOP, and of course it had 5 MILs' of adjustment in each direction. Below is a photo of my LH Windage SN-3 and it's U.S. #3 M40-type in .01 MIL adjustments:

<span style="font-weight: bold">USO SN-3 3.2-17X w/EREK and LH U.S. #3 Windage w/STOP in .01 MIL:</span>
SN-33.217XLHWindage1.jpg


<span style="font-weight: bold">LH Windage U.S. #3 M40-type Knob with .01 MIL adjustments. Photo shows the 5L MIL and 5R MIL markings on the knob:</span>
US3M40LHWindageKnob4.jpg


Keith
 
Re: USO Windage #1 Versus #3

Keith, I was referring to your post, when you posted
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Aries64</div><div class="ubbcode-body">

For instance, the U.S. #1 knob gives you 48 "clicks" while the U.S. #3 gives you 50 clicks. So in terms of adjustments types (MOA or MIL) the U.S. #1's 48 clicks give you a nice even 12 MOA (in 1/4 MOA clicks) and 24 MOA (in 1/2 MOA clicks).

Those same 48 clicks of the U.S. #1 will give you an "uneven" 4.8 MILs' (48 x .01 MIL = 4.8 MIL), which may or may not bother you. YMMV.

A U.S. #3's 50 clicks will give you "uneven" 12.5 MOA (in 1/4 MOA clicks) and 25 MOA (in 1/2 MOA clicks) Windage totals, but a nice even 5 MILs' in .01 MIL clicks/adjustments.

</div></div>

it sounds as if you were stating total travel per revolution on both knobs, not just the half turn of the windage stopped #3 (since you put the 48 clicks of the #1 and then 50 clicks on the #3 with no reference to a stop).
Without a windage stop there's no limit to how much one can dial either direction with either type at 48 clicks per turn on the #1 and 105 clocks per turn on the #3.

I guess I should have just asked for clarification re: the windage stop, 'cause I know that you know what you are talking about
wink.gif
 
Re: USO Windage #1 Versus #3

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: sobrbiker883</div><div class="ubbcode-body">Keith, I was referring to your post, when you posted
Aries64 said:
For instance, the U.S. #1 knob gives you 48 "clicks" while the U.S. #3 gives you 50 clicks. So in terms of adjustments types (MOA or MIL) the U.S. #1's 48 clicks give you a nice even 12 MOA (in 1/4 MOA clicks) and 24 MOA (in 1/2 MOA clicks).

Those same 48 clicks of the U.S. #1 will give you an "uneven" 4.8 MILs' (48 x .01 MIL = 4.8 MIL), which may or may not bother you. YMMV.

A U.S. #3's 50 clicks will give you "uneven" 12.5 MOA (in 1/4 MOA clicks) and 25 MOA (in 1/2 MOA clicks) Windage totals, but a nice even 5 MILs' in .01 MIL clicks/adjustments.

</div></div>

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: sobrbiker883</div><div class="ubbcode-body">it sounds as if you were stating total travel per revolution on both knobs, not just the half turn of the windage stopped #3 (since you put the 48 clicks of the #1 and then 50 clicks on the #3 with no reference to a stop).</div></div>
OK, I see what you mean - that is rather confusing. My bad. I switched from the 48-click "total" travel of the U.S. #1 to the 50-click "STOPPED" travel of the U.S. #3 without mention of the STOP on the U.S. #3. And I also didn't state that the U.S. #3 has 5 MILs' of adjustment in both Left and Right directions.

Also, a "STOP" is not offered on the U.S. #1 Windage Knob - I haven't spoken to anyone at USO about the specific reason(s), but one obvious reason would be extremely limited adjustment (48 clicks of total travel = 24 clicks in each direction, which is only 6 MOA in 1/4 MOA clicks and 12 MOA in 1/2 MOA clicks in each direction, or roughly 1.7 MILs).

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: sobrbiker883</div><div class="ubbcode-body">
Without a windage stop there's no limit to how much one can dial either direction with either type at 48 clicks per turn on the #1 and 105 clocks per turn on the #3.</div></div>
Yep, you're right. One of my buddies has an SN-3 3.2-17X 44 T-PAL with U.S. #3 in 1/4 MOA and for me the multiple turns make it too easy to get lost on the Windage knob (until you fire a shot and miss wide).

I had a Windage STOP on my SN-3, but I never needed 5 MILs' of travel each direction anyway. Its' just easier and faster to just hold since the wind shifts anyway. So I learned that <span style="font-style: italic">for me</span>, a U.S. #3 in MILs' doesn't need a Windage STOP. If I would have known that I could have saved $130.00 forgoing that Option.

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: sobrbiker883</div><div class="ubbcode-body">I guess I should have just asked for clarification re: the windage stop, 'cause I know that you know what you are talking about
wink.gif
</div></div>

<span style="font-style: italic">"Are you fucking with me?"</span> - Richard Dreyfuss as Detective Chris Lecce, <span style="font-style: italic">"Stakeout"</span> - 1987

No harm no foul, my post was unclear. I shouldn't post when the wife is hurrying me off the computer and out the door. Holiday hen-peck syndrome anyone?

Keith