Primary Arms Optic not working with 20 MOA base

[TheFighter88]

Needing some help here to be sure I'm not missing something.

Put together a rifle for my wife - it's a Howa 1500 bull barrelled-action in 6.5 Creedmoor, bedded in a Boyd's At-One walnut stock.

Got a Primary Arms GLx 4-16x50FFP scope with the ACSS-Apollo 6.5CR reticle and mounted it on an EGW 20 MOA one-piece heavy duty aluminum Picatinny-style base with Vortex Pro Picatinny-style low aluminum rings.

When I went to zero it this past weekend, my impact was high by 10" or 12", and I couldn't adjust the reticle any more for negative elevation (e.g. to lower the bullet impact relative to the reticle). Has anyone else ran into this problem, pairing a 20 MOA base with a Primary Arms optic? I just assumed they'd have enough elevation adjustment to allow for use of a 20 MOA base, but I'm thinking I may just have to use a regular base.

To clarify too, I did make sure to press the zero stop button, but that only gave me five clicks below the factory zero. I called Primary Arms as well and was told that just over one full rotation is the extent of elevation adjustment on the optic.



Any help is appreciated - thanks in advance!

 

[marsh1]

You have more than one rotation. You need to disengage the stop at zero internally while you zero not just press the button. Do that with the cap off. I will make sure to get a training on this for the people answering the phones. Sorry you did not get the help you deserve.

 

[TheFighter88]

Thanks for the reply. Sorry, it's probably more me than the help I received, if I'm honest.

The person on the phone mentioned something about needing to remove the cap and adjust the zero stop internally, but it didn't make sense in my head - I thought he just wasn't understanding the problem, especially when he confirmed what I was thinking regarding the one full rotation of elevation.

So, I apologize. This one's on me, not you guys in the slightest. Thank you for your help, sir. Much appreciated.

 

[Scopeye]

Next time it might be easier to buy Burris Signature XTR rings with any base whether it's a plain 0 or 20moa base. This way you can get it to work for whatever scope you choose no matter what. Even zero it comfortably within the sweet spot.

 

[TheFighter88]

Wasn't familiar with those rings - thanks for the recommendation.