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Scope and rifle leveling

September 12 2017 at 10:42 AM
Josh3rd  (Login josh3rd)
YF12

Ok members, I know that a scopes vertical crrosshair is supposed to bisect the center of the barrel to eliminate cant. You can use a plumb line to make sure your scope is straight up and down.

What I want to know is how can you make sure that your rifle is straight? I know that if you have a breach block or a weaver rail, you can set a level on it but what if you don't have anything flat on your rifle to lay a level on?

For instance I have a prosport with a blk bubble level that attaches to the scope tube. When I look through it at a plumb line, the scope and bubble level shows true but the rifle stock feels crooked. Ok so when I pull my face back to the rear, behind the butt pad and see a very small circle opening through the scope, i center the crosshairs and make sure the bubble level is in the middle, I can see the bottom of the crosshairs post kinda at the 5 o'clock position.

My whole point is that when looking at a target with the rifle is in the shooting sticks or shouldered, and the bubble level is level, the crosshairs look just a little crooked. Even if I am looking at a plumb line and the crosshairs are straight with the line, it looks like the bottom is at 5 o'clock and the top at 11 o'clock.
Now unless it's windy, my shots are right on the vertical for the most part from 10-55yds.

Is there a way to check a prosport to see if it's level (right/left)? I tried to place a torpedo level underneath because that is the only flat place.

 
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peterdulux
(Login peterdulux)
YF12

Re: Scope and rifle leveling

September 12 2017, 11:06 AM 


 
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Josh3rd
(Login josh3rd)
YF12

I wonder how that works nt

September 12 2017, 2:43 PM 


 
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Jeff P
(Login pad617)
YC

Here's an explanation...

September 12 2017, 2:55 PM 


 
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Josh3rd
(Login josh3rd)
YF12

Thanks Jeff P. NT

September 13 2017, 8:03 AM 


 
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Josh3rd
(Login josh3rd)
YF12

Peterdelux, thank you. You ever use one? NT

September 13 2017, 8:04 AM 


 
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nced
(Login SpringerEd)
YF12

"What I want to know is how can you make sure that your rifle is straight?"....well.......

September 12 2017, 1:23 PM 

if my HW95 poi is in line left to right at both 10 yards and 50 yards then I'm satisfied that the reticle is rotated properly.

Anywhoo, this works well for me and my HW95 or R9...........
Level the gun with bubble level on the flat of the barrel pivot block.........
aU2yYyQl.jpg
Then align the vertical leg of the reticle with a string/weight hung upstairs at 18 yards......
E8E45o7l.jpg

Perhaps this sketch will help......
fgMZ7WVl.jpg

Concerning the "it looks like the bottom is at 5 o'clock and the top at 11 o'clock" statement it seems to me that if the reticle is aligned "properly" but is misaligned when sighting perhaps you're holding the gun skewed so the scope is vertically aligned over the receiver. Anywhoo.....if your statement "unless it's windy, my shots are right on the vertical for the most part from 10-55yds" is correct, What's the issue even if things look "strange"? It does seem to me that your two statements are contradictory but I certainly could be mistaken!


    
This message has been edited by SpringerEd on Sep 12, 2017 1:35 PM


 
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Josh3rd
(Login josh3rd)
YF12

Ed, they are kinda

September 12 2017, 2:41 PM 

contradictory lol. Ed it is weird because when I shoulder the rifle and hold it to what I think and feel is level I then look through the scope and the reticle is at the 12 and 6 position but it's not matching with the plumb line for the top and bottom of the post and my bubble is far to the right. But when I bench it and plumb it with a plumb line and have the bubble level in the middle and look through it, then the reticle is at the 11 and 5 o'clock position. So I'm guessing it's me. But I still would like to know how to level the stock and fun action when the rifle/rifle stock doesn't have any flat spots.

 
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nced
(Login SpringerEd)
YF12

"when the rifle/rifle stock doesn't have any flat spots."....hummm, really don't know.....

September 12 2017, 7:49 PM 

because all my HW springers have a "flat topped barrel pivot block" to attach a magnetic torpedo level like this......
b4CEdI7l.jpg
[linked image]

Anywhoo....after I level my flat topped barrel pivot block and align the reticle with the plumb line I make sure that the vertical crosshair is aligned with "12 and 6 o'clock" when holding the rifle.


 
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Josh3rd
(Login josh3rd)
YF12

Someone mentioned the cocking lever

September 13 2017, 8:12 AM 

Of the Prosport. Pretty ingenious I think. Plus there is a sliver of a flat spot of stock behind the safety. I'm just not keen on that little bit of area. I also read that I could crank one revolution up and take some shots say at 25yds and then another revolution and take another couple of shots to see if it would stay on the vertical plumbed line that you would draw on target. The issue with that to me is that it wouldn't show nothing different because you're at the same distance. What's your opinion?

 
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TV
(Login TerryVanpool)
YC

Re: Scope and rifle leveling

September 12 2017, 1:40 PM 

Cock the gun and leave the cocking lever in the "down" verticle position. Use your torpedo level on the cocking lever to find what you want.
Charter member of Over The Hill Gang

 
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Josh3rd
(Login josh3rd)
YF12

AWESOME IDEA!!! Thank you. NT

September 12 2017, 2:42 PM 


 
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Will Piatt
(Login saddlemountaingunsmith)
YF

Some points to consider in my experience

September 12 2017, 7:08 PM 


Surfaces machined flat frequently are not square or plumb to the rifle.
Scope turret cover caps are almost always not an accurate reference.
Many actions are not bedded plumb into the stock.

Ultimately the proof is the trajectory windage is on target at close and long range

 
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nced
(Login SpringerEd)
YF12

Yup....fer sure! I used to put my torpedo level on the scope elevation cap.........

September 12 2017, 7:58 PM 

for levelling till I found the caps of my scopes weren't anywhere near "level"! I did find that the geometry of my HW break barrels is "good enough" from near to far.



    
This message has been edited by SpringerEd on Sep 12, 2017 7:58 PM


 
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Tim in California
(Login TimandDenise)
YF

Torpedo levels are a bit notorious for being inaccurate, flip them end for end

September 13 2017, 3:03 AM 

and see if they read the same. I don't know how many I checked and found them to be 'off'..

 
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nced
(Login SpringerEd)
YF12

Easy to check for torpedo level (or any level) inaccuracy, simply..........

September 13 2017, 9:37 AM 

put the level on a flat surface and observe the position of the bubble, then swap the level end for end and place it on the surface at the same spot. If the bubble registers at the same position as before, the level is accurate.

Anywhoo....previous to the "bubble level procedure" my 50 yard poi would be correct but the 10 yard poi would be about 1/4" to the left, however the bubble level solved this issue so I'll stick with it! LOL....just re-checked my torpedo level and it's still good when checking my desk top by "end swapping".



    
This message has been edited by SpringerEd on Sep 13, 2017 9:38 AM


 
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Tim in California
(Login TimandDenise)
YF

Ed, we are saying the same thing. I just wanted to advise others that might not know.

September 13 2017, 6:46 PM 


 
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nced
(Login SpringerEd)
YF12

Sorry....my bad! A simple matter of verbose agreement with your statement. nt

September 13 2017, 7:42 PM 


 
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Josh3rd
(Login josh3rd)
YF12

Thats what i was afraid of, figuratively speaking.

September 13 2017, 8:14 AM 

It's just a hassle tightening then untightening, check, shoot repeat. But you're probably right.

 
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David Geesaman
(Login dgeesaman)
YF

What I use

September 12 2017, 9:55 PM 


 
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