Scope Elevation Issues!

[savagedasher]

This is the rifle he has:

It has a built in Pic Rail.

This is the mount he is using:

 

[savagedasher]

The mount has zero min of angle . Only the 34 mm size has 20 moa.
When the scope is mounted that far above the bore that is what you get . Larry

 

[savagedasher]

Larry,

If his problem was not being able to lower his point of impact at short range, then yes. If anything his scope being raised is helping.

Tom[/

He wants to get his middle of scope adjustment at 100 . With a 20 Moa base .
My middle is around 600 yards. Larry

 

[savagedasher]

David, witch way do you have 17 MOA left. Tom

It take around 30 Moa with base and scope together . Larry

 

[dkhunt14]

He wants to get his middle of scope adjustment at 100 . With a 20 Moa base .
My middle is around 600 yards. Larry

Larry he wants to get to 1000 yards. His scope at 100 is at the middle or higher. He doesn't have enough left to dial up. Usually a 20 Minute base keeps me nearer to the bottom with a 100yard zero. Matt

 

[MS50]

The advertised total elevation on my Bushnell Elite Tactical is 24mils. It's mounted correctly on an EGW 20moa rail, medium rings. I get 8mils total elevation with a 100 yard zero before the reticle begins to bind. Tech support states I should be getting close to 18mils. My scope is in their shop to be checked out. It's possible your scope does not provide the advertised elevation. If my scopes comes back unchanged, I'll get Burris Sig Zee rings and get on with it.

 

[XTR]

I don't know if the rail on the RPR is true or not, but here is my story about elevation issues.

When I first started shooting F class I had a NF 8-32BR on my rifle, the action was a R700. After doing my load work I talked to some of the guys and decided to do the match the following weekend in Oak Ridge. Fortunately I went to JBM and got an estimated come up. At the time I was shooting 175SMKs from a 24" Keriger. When I checked my come up I found that my NF didn't have enough for the over 30MOA I needed to get to 1000. It was sitting on a 20MOA rail. I ordered a 30MOA with fast delivery and shot the match.
The 30MOA rail put me about 4MOA off of the bottom of the erector at 100 yards.

Fast forward a yr or two and I got a 12-42 NXS, once again, with the same 30MOA rail I'd been running, my rifle was less than one turn off the bottom of the erector at 100 yards.

Then I bought my first custom, a Definace Rebel. I ordered it with a custom 30MOA rail ('cause it's what I'd been using) Lo and behold, cant get a zero at 100, or 200 for that matter. (not that it mattered, by that point I never shot the rifle less than 300 yards)

The point of all of this is that everyone told me that with a NF scope a 20MOA base should be plenty on the 700, but it wasn't. My only explanation is that my particular 700 the top of the receiver isn't "true" for lack of a better term.

As for mounting higher and losing elevation, the geometry doesn't make sense for losing more than the elevation above the bore. The LOS from the scope is a straight line to the target, you raise the scope, you raise the POA a similar amount assuming everything is level.

 

[savagedasher]

Simple check with sighted at 100 Have a target 30' tall Adjust your sight at the very top ove the don't let the gun move turn the scope adjust up as far as the scope wil go if wont move up 30 " it won't make a 1000. The cross hair will be at the bottom of the papers Larry

 

[dkhunt14]

The 8x32 BR only has 50 MOA and it could get close to not getting enough for a 1000 yard Zero. His scope has 65 MOA which should get him there. Scopes can vary from scope to scope. He should have a lot more left then 17 MOA with a 20 MOA rail and 65 minutes in his scope. Maybe he needs to try another scope to make sure it isn't the scope. I have a few 12x42 BR scopes. When you mount them on the same gun they vary what's left for MOA off the bottom. Then something could be wrong with the base or mount also. Matt

 

[XTR]

the first thing I would do is turn the mount around or try another set of rings to if it is the mount.

Then if that doesn't work try another scope.

 

[DaveMarine1]

I mounted an ATACR 4-16x42 with NF High Rings and all went well. I will look into different mounts and make sure proper mounting of all hardware.
With the PEEPR sight I had 17 MOA of elevation left after the 100 yd zero. Obviously not enough to get much last 750 yds or so.
Anywho, I'll try some other mounts and what not with the Vortex. I'll try another PST also to make sure of no scope defects.
Thanks for all your time and insight on this issue.

David

 

[6MMsteve]

when I was shooting my 308 Baer at 1000 my 100yd zero was 25.5 inches high at 100 shooting 220 Smk, that was the second time we went to PaORG1000, 1st time didn't get on paper, because we only shot at 875yds at home thinking or stepping instead of measuring, long ride back to KY 770 miles, but the second trip was fun all the way back home

 

[dkhunt14]

when I was shooting my 308 Baer at 1000 my 100yd zero was 25.5 inches high at 100 shooting 220 Smk, that was the second time we went to PaORG1000, 1st time didn't get on paper, because we only shot at 875yds at home thinking or stepping instead of measuring, long ride back to KY 770 miles, but the second trip was fun all the way back home

That should have put you real close at 1000. Maybe a minute or two more yet. Usually if someone sees you aren't on they will grab glass and help you. Matt

 

[ballison]

I mounted an ATACR 4-16x42 with NF High Rings and all went well. I will look into different mounts and make sure proper mounting of all hardware.
With the PEEPR sight I had 17 MOA of elevation left after the 100 yd zero. Obviously not enough to get much last 750 yds or so.
Anywho, I'll try some other mounts and what not with the Vortex. I'll try another PST also to make sure of no scope defects.
Thanks for all your time and insight on this issue.

David

David,

I would give Vortex a call. I have several of their scopes, including the one you are having issues with. I had to send it back because the reticle was canted, and they sent me a brand new scope. If you only had 17 moa left with a 20 moa base, something is askew. You should have something in the neighborhood of 50 moa. I'm familiar with your rifle, scope, and mount, and it's NOT the height of the scope.

 

[DaveMarine1]

David,

I would give Vortex a call. I have several of their scopes, including the one you are having issues with. I had to send it back because the reticle was canted, and they sent me a brand new scope. If you only had 17 moa left with a 20 moa base, something is askew. You should have something in the neighborhood of 50 moa. I'm familiar with your rifle, scope, and mount, and it's NOT the height of the scope.

Thanks a lot FTRinPA, I'll get ahold of Vortex and see what they have to say. It is defiantly worth it to try another one of the same scope at this point just for the price of mind ha. Thanks again.

 

[6MMsteve]

That should have put you real close at 1000. Maybe a minute or two more yet. Usually if someone sees you aren't on they will grab glass and help you. Matt

Yep that was 1987 the second time up to Pennsylvania was mo fun lol

 

[MS50]

My Bushnell was returned from the shop yesterday. Tech support told me that my 6-24 Elite Tactical was over adjusted. Also told me that the total elevation travel is 12 mils. Even with the 20moa rail, I get only 8 mils elevation. If I want to dial up to 10-11 mils to get to 1000 yards, I will have to shim the base or rings. Tech support advised shimming for gross adjustments, and use the turrets for fine adjustments. I have Burris Sig Zee rings on order. I'm not bashing Bushnell, I love the clarity of this scope. My experience may save others time and effort.

 

[XTR]

My Bushnell was returned from the shop yesterday. Tech support told me that my 6-24 Elite Tactical was over adjusted. Also told me that the total elevation travel is 12 mils. Even with the 20moa rail, I get only 8 mils elevation. If I want to dial up to 10-11 mils to get to 1000 yards, I will have to shim the base or rings. Tech support advised shimming for gross adjustments, and use the turrets for fine adjustments. I have Burris Sig Zee rings on order. I'm not bashing Bushnell, I love the clarity of this scope. My experience may save others time and effort.

That response makes no sense (I hate it when tech support seems to know less about a product than the consumer)

Bushnell lists that scope as having 24mil of elevation total. Granted most manufacturers center the erector so you only get 12 mils from a 100 yard zero on a lot of setups, but with a 20MOA rail you should recover about 5½ mils so you should have 17 to 18 mils of adjustment from a 100 yard zero. But we've been over that.

Dial the elevation turret all the way though it's travel and see what you have on the turret. I bet it's pretty close to 24mils. If your 100 yard zero is not where you need it get a more adjustment in the rings or the base to "recover" the travel that you have lost.

 

[MS50]

Full range is 19mils. I'll go with the ring shims to get a few more mils of elevation out of the set up. I use a one piece rail. Shimming the rear of the rail only is a path I'm going to stay off of. Hopefully I can still get a 100 yard zero, although I really don't know why I need one. I use ShooterApp and I can plug in a 200 yard zero.