Rifle Scopes OD of USO Ergo 44mm??

[sobrbiker883]

Can anyone with a 3.2-17 SN3 with an Ergo objective do me a favor and measure the OD of their objective?
Mine's gone and I need to order rings for its replacemnt. If I can get the OD of the USO I will know how much room I have to work with....

 

[Guest]

Re: OD of USO Ergo 44mm??

The SN-3 3.2-17X 44mm Ergo I have is 2.240
an my 3.8-22X 58mm Ergo is 2.723

Hope this helps

 

[sobrbiker883]

Re: OD of USO Ergo 44mm??

Exactly what I need to know, thank you!

 

[Guest]

Re: OD of USO Ergo 44mm??

Be sure to correct for the diff between a 0 moa base vs a 20 or 30moa. It ain't much but it bit me once.

 

[sobrbiker883]

Re: OD of USO Ergo 44mm??

Putting an Premier 5-25 (when it materializes) onto the same system that the USO was on (EGW base 20moa). USO was 30mm in TPS lows were .925 centerline to base.

The Seekins 34mm rings are either .92 or .97 centerline to base.

USO=2.24 OD
Prem=2.44 OD

So my objective should only be .010" lower with all other things considered, or am I missing something?

Looks like there'll be room:

 

[Guest]

Re: OD of USO Ergo 44mm??

That should work just fine. Wait, thats a 0.100 diff ain't it?

Mines(44mm)in the lower Ken Ferral rings, with a Nightforce 20moa an the obj cover is just 0.030 off w/o the shade on.

 

[sobrbiker883]

Re: OD of USO Ergo 44mm??

You're right its .1" difference. Maybe I'll get the high Seekins and cross my fingers.....

 

[TorF]

Re: OD of USO Ergo 44mm??

I have another question.

Can someone please measure the length of the 30mm tube on the 3.2-17 SN3?