Rifle Scopes USO scope for long range 5-25 or 3.8-22

[Fred @ Bison Tactical]

I am researching a scope for distances between 600 - 2000 yards. I have pretty much settled on USO as the vendor. I would like to hear pros/cons between the 3.8-22 and 5-25. I will be running a 20moa base and likely will go with the larger tubes available on both (35's I think are available for both)...

 

[mdavlee]

Re: USO scope for long range 5-25 or 3.8-22

The SN-9 and SN-3 5-25 have more elevation than the Sn-3. The sn-3 in 3.8-22 is 70 moa of travel and the Sn-9 is 200 plus. The sn-3 5-25 is 90 moa when using the 34 or 35 mm tube.

 

[Switchblade]

Re: USO scope for long range 5-25 or 3.8-22

The SN-9 is outer erector with a much larger and heavier size. Th eobvious advabtage of the 180mm objective gives it superior ranging out to those mile distances, or from teh old shop, being able to see perkies at the top of Knott's Berry Farm's parachute ride.
For basic range/competition, you won't beat the SN-3 T-Pal with it's side focus. If you have a big caliber rifle such as the 338LM, or a 416 - 20mm, go with the SN-9 if you have the cash and distance to exploit it. If not, go SN3

 

[JFComfort]

Re: USO scope for long range 5-25 or 3.8-22

HeroFish, what cartridge will you be shooting at those ranges? You may want the large tube 3.8-22 for the greater erector travel. A SN-9 would be sweet on a ELR/ULR heavy gun build.

 

[Fred @ Bison Tactical]

Re: USO scope for long range 5-25 or 3.8-22

oops, this is a .338 LM currently at the smiths in parts, I may get it for christmas if I am lucky.

 

[Fred @ Bison Tactical]

Re: USO scope for long range 5-25 or 3.8-22

hmm, I didn't notice the lower travel on the 3.8-22. I think I am going to need the 115 MOA of travel (20 MOA base + 95 scope) for the .338LM over 1000 yards.

I notice that the 34mm tube and 35mm tubes are the same travel? Any reason to choose 34 vs 35?

 

[CMH]

Re: USO scope for long range 5-25 or 3.8-22

You won't get all 90 MOA - you will get 1/2 of that plus your base = 45+20 = 65 MOA +/-. Depends on a number of conditions, but not sure that is going to get you to 2000 yards without holdovers.

 

[mwroseberry]

Re: USO scope for long range 5-25 or 3.8-22

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: CMH</div><div class="ubbcode-body">You won't get all 90 MOA - you will get 1/2 of that plus your base = 45+20 = 65 MOA +/-. Depends on a number of conditions, but not sure that is going to get you to 2000 yards without holdovers. </div></div>

You will get all your travel if you get the EREK knob

 

[Fred @ Bison Tactical]

Re: USO scope for long range 5-25 or 3.8-22

I am looking at 1750 yards as the goal of this configuration, but of course would like to be able to go farther if I can. If I ran JBM correctly on a couple of similar configurations I should need about 66 MOA of elevation at 1800 yards using a 100 yard zero. If I did all the math righ, that should be just within the elevation travel of the SN-3 5-25. I guess after that I will need to use holds for any further travel. I don't think I am near ready for a 2000 yard shot at this point anyway.

 

[Fred @ Bison Tactical]

Re: USO scope for long range 5-25 or 3.8-22

mwroseberry -- how does the EREK knob give all of the travel back? I thought that there was 45 above and 45 below ?

 

[CMH]

Re: USO scope for long range 5-25 or 3.8-22

It appears I don't understand how an EREK knob works. Can you explain?

Casey

 

[DirtyDave]

Re: USO scope for long range 5-25 or 3.8-22

EREK knob is not magic. It does not create travel that is not there. It just has an independent adjustment with the center screw to allow you to bottom the knob out for a zero stop and sight in your zero without turning the knob.

As far as using all the travel; You need to think about windage. With your hypothetical setup (20moa base + 45moa dialed up to get to 1800yds) you will be maxed out on your elevation. The closer you get to maxing out your elevation, the less windage you will be able to dial.

You really should be using a 30-40moa base so that the majority of your shooting (especially longer ranges where more windage is needed) is done closer to the middle of the scope travel.
With 90moa (45up/45dn) you should still be able to zero @ 100yds with a 40moa base.

 

[lazy21]

Re: USO scope for long range 5-25 or 3.8-22

the 5-25 with 95 moa is not in production yet, if you were to order one today. You'll be getting close to 70 on a 35mm tube, and Yes. Erek is the way to go to get the MAX elevation on your scope.

 

[jonthomps]

Re: USO scope for long range 5-25 or 3.8-22

I have a 5-25 tpal and have taken it to 1200 with my 338 LM. Far cry from 2k, but I have been very happy with it. I had a Premier 5-25 and it was a nice scope too, but the USO is a tinge better in my opinion (in terms of features - glass was equal to my eye). My 2 cents.

 

[mwroseberry]

Re: USO scope for long range 5-25 or 3.8-22

In the EREK you adjust the lense inside the scope instead of moving the point of aim in front of the lense. This is how you maintain almost all of your travel. I have 104min on my SN3 3-17 ERGO with a 30mm tube because of this.

Good luck,
Merritt

 

[DirtyDave]

Re: USO scope for long range 5-25 or 3.8-22

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: mwroseberry</div><div class="ubbcode-body">In the EREK you adjust the lense inside the scope instead of moving the point of aim in front of the lense. This is how you maintain almost all of your travel. I have 104min on my SN3 3-17 ERGO with a 30mm tube because of this.

Good luck,
Merritt</div></div>

That is not how it works. Doesnt matter if you turn the whole knob or if you turn the center screw, both move the whole erector inside the scope. The center screw just allows you to adjust the erector without turning the knob for sighting in your zero.

 

[VKC]

Re: USO scope for long range 5-25 or 3.8-22

I don't think you understand the total MOA with base cant and scope travel concept. If you have a scope with 95 MOA of total elevation and have a zero cant base, then if the scope travel is centered, you will have about 1/2 of total elevation, or about 47 MOA. If you use a 40 MOA base that will allow you about 87 MOA elevation. You can't get more elevation travel out of a scope than it's total elevation range.

 

[RingingSteel]

Re: USO scope for long range 5-25 or 3.8-22

Both scopes will do what you want. For me I would choose the extra 3x just because of old tired eyes.