Rifle Scopes USO ER25 - Question Regarding Zero

[BenTerrible]

Scope is NIB, mounted, zeroed @ 100 yards. After achieving zero, I noticed that my turret knob is considerably higher than the zero index on the scope.

Specs:

ER-25 with MIL-MPR Reticle. Scope is loaded with everything, TPAL, EREK Knob, etc.

Rifle is Barrett M98 338 Lapua Mag

I had scope questions for this set up in an earlier thread but decided to start a new one to avoid confusion, as this is an entirely different scope, brand new from USO.

See image below.

I guess my concern here is I must be losing a bit of elevation out of the EREK knob with it set up this way. What changes ( if any ) can I try to have my true zero match the zero index on the scope? Right now I must be 70 clicks above the zero line on the scope, this is my true zero at 100 yards.

Thanks in advance!

-BT

 

[KNIGHT11B4]

You are not zeroing the EREK system properly.

If you would like, PM me your number and I can call and explain how to do it properly. Its not hard, just easier to explain over the phone rather than type.

 

[Papa Zero Three]

See if these videos help you out.
U.S. OPTICS - Instructions

 

[DirtyDave]

Your center screw needs to come UP [ccw], so that your knob will go DOWN [cw] further. If you have a bore sighter, its real easy to fix without losing your zero.

 

[sobrbiker883]

70 clicks is less than one rotation of the turret.
My new ER25 just came in yesterday and looks a little high as well. I'm not too concerned as USO hasn't been putting horizontal index lines on for long and I need to determine the relevance of the markings once I zero Friday.
USO has historically sent scopes boresighted assuming a 20moa base so you should have plenty of up left if its in the ballpark.

I always turn mine all the way down until they stop, click up a mil, set turret to zero, then boresight and fine tune the zero with the center socket head only, holding the turret in place. Has always worked for me.