Rifle Scopes Problem Zero'ing Weaver Tactical 3 x 10...

[yoterunner]

Hey all, I know lots of posts on this in past and have searched/read quite a few...none really address all my issues.

<span style="font-weight: bold">5" High even at 200YD, and all out of "down" elevation!</span>

700 SPS 300 RUM, 210 Berger VLD's, 3040fps MV. Weaver Tactical 3 x 10 Mil/Mil - Midway Special!
I just got this scope and got it mounted up. It is mounted onto a EGW 20 MOA base, with Leupold rings.

I had previously mounted my Leupold VX3 on this same base, but with different rings and was able to get a 100YD zero with no problem. Besides getting a 0 MOA base or 10-15MOA, are there any other suggestions or problem solving suggestions?

Is this an expected problem from those of you that have a lot of experience with mounting scopes and various bases?

Thanks

Jason

 

[Captain Kirk]

Re: Problem Zero'ing Weaver Tactical 3 x 10...

zero the rifle @ 500 yards and be done with it.

Seriously, interesting issue, what type of rings are you using ?

Kirk R

 

[yoterunner]

Re: Problem Zero'ing Weaver Tactical 3 x 10...

the rings I have on now are cheap Leupold rifleman alum 1" Medium rings. For the Leupold VX3 - 30MM I had on Leup PRW Medium Rings. I just measured them both 1" Med - .230 and 30mm Med - .353. This difference might account for being able to get on with the 30mm set-up (higher rings = lower POA?) Does that sound reasonable? Want to use my 20MOA base...would higher rings help?

BTW this is a substitute scope set-up until my Viper PST comes in (in a few months!?) and then this will go on my AR15. Want to save a bit of cash for good rings later.

 

[Captain Kirk]

Re: Problem Zero'ing Weaver Tactical 3 x 10...

Ring height has little if anything to do with it. Measure your rings (as a pair) to ensure they are indeed both the same height, although I'd think you would know when installing them, just going thru all of the possibilities.

Kirk R

 

[JuniperEyes]

Re: Problem Zero'ing Weaver Tactical 3 x 10...

Try swapping the rings around on your scope. The ring in the front now swap to the rear.

One may be taller than the other (not a good thing if so).

 

[High Binder]

Re: Problem Zero'ing Weaver Tactical 3 x 10...

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: yoterunner</div><div class="ubbcode-body">

<span style="font-weight: bold">5" High even at 200YD, and all out of "down" elevation!</span>
</div></div>

Yer scope is on up-side down.

 

[yoterunner]

Re: Problem Zero'ing Weaver Tactical 3 x 10...

thanks I'll try to swap and measure to check for accuracy of pair. Any thoughts on the scope? Should I have enough down travel with a 20MOA base and this scope?

 

[yoterunner]

Re: Problem Zero'ing Weaver Tactical 3 x 10...

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Shot In The Dark</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: yoterunner</div><div class="ubbcode-body">

<span style="font-weight: bold">5" High even at 200YD, and all out of "down" elevation!</span>
</div></div>

Yer scope is on up-side down. </div></div>

I wish that were the problem...I might have been able to diagnose that one!

 

[Captain Kirk]

Re: Problem Zero'ing Weaver Tactical 3 x 10...

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: yoterunner</div><div class="ubbcode-body">thanks I'll try to swap and measure to check for accuracy of pair. Any thoughts on the scope? Should I have enough down travel with a 20MOA base and this scope? </div></div>

Well, that scope only has 16.5 MIL of internal adjustment (56 MOA), 28 MOA up and 28 MOA down if it is mechanically zeroed, you ate up 20 MOA down with the base but you should have plenty left. As mentioned, check your rings 1st and we will got from there.

Kirk R

 

[westopecos]

Re: Problem Zero'ing Weaver Tactical 3 x 10...

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Captain Kirk</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: yoterunner</div><div class="ubbcode-body"> Should I have enough down travel with a 20MOA base and this scope? </div></div>

Well, that scope only has 16.5 MIL of internal adjustment (56 MOA), 28 MOA up and 28 MOA down if it is mechanically zeroed, you ate up 20 MOA down with the base but you should have plenty left. As mentioned, check your rings 1st and we will got from there.

Kirk R </div></div>
Well, that only leaves 8moa IF centered. I wanted to get that Mil/Mil rig too, but, like you, I have 20 moa bases on many of my rifles, and I was worried I would run out of elevation... Let us know what you find when swapping the rings.

 

[yoterunner]

Re: Problem Zero'ing Weaver Tactical 3 x 10...

OK so here's the udate...

I gave up on the 20MOA base and went to Cabela's looking for the Mark 4 Zero MOA base, but they did not have in stock so I bought the cheap Warne 2 piece steel base set. Will upgrade later, but needed to figure this problem out.

Zero'ed just fine at 100 yards, with downward adjustment left.

Here's the math...

Now with the Zero MOA base on, 100 YD Zero, I have 5.7mil or 19.6 MOA left of downward adjustment. So, with my 20MOA base on, I was just short of being able to zero at 100 YDs. I will have to look into either a 10-15MOA base. If I need it.

For the ranges I'm proficient at now, I have plenty of adjustment left, but will be working to stretch it out further. So has anybody else that bought this Weaver scope had trouble with 100 YD zero and a 20MOA base?

 

[lrrifle]

Re: Problem Zero'ing Weaver Tactical 3 x 10...

Interesting. I had no problems obtaining 100yd zero with same scope, IOR 20 MOA base and Leupold Med PRW rings. This on a cut down (21.5")Rem 700 SPS. Have 12.3 mil of usable "up" and 4.2 of "down". Glad you were able to get it on with the new base!

 

[m1k3]

Re: Problem Zero'ing Weaver Tactical 3 x 10...

Sounds like its more of an issue/feature of your rifle than the scope or scope base problem. Its normal for a barrel to be keyed so that it is pointing up (in simple terms) so you basically get free elevation. Since factory rifles almost never take a barrels natural imperfections into account, you could have a rifle that shoots far to the left, hence maxing out your scopes windage.

In your case, it sounds like the barrel happens to be up so you get a little help. No big deal and normally requires a very detailed smith to accomplish.

Mike

 

[Captain Kirk]

Re: Problem Zero'ing Weaver Tactical 3 x 10...

You could pick up a set of Burris rings with the offset inserts for use with your 20 MOA base.


http://www.opticsplanet.net/burris-signature-pos-align-offset-insert-kits-individual-inserts.html

 

[fdkay]

Re: Problem Zero'ing Weaver Tactical 3 x 10...

I had issues with an EGW 20MOA base.
When the reciever started to warm up, my POI would change significantly.
Went to an EGW flat base and the problem disappeared.