Scope and rifle leveling

Scope and rifle leveling

Joined: June 17th, 2011, 12:59 pm

September 12th, 2017, 2:42 pm #1

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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Joined: December 20th, 2009, 2:43 am

September 12th, 2017, 3:06 pm #2

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Joined: July 9th, 2015, 1:00 pm

September 12th, 2017, 5:23 pm #3

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.
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.........

Then align the vertical leg of the reticle with a string/weight hung upstairs at 18 yards......


Perhaps this sketch will help......


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!
Last edited by SpringerEd on September 12th, 2017, 5:35 pm, edited 1 time in total.
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Joined: October 8th, 2004, 4:12 am

September 12th, 2017, 5:40 pm #4

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.
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.
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Joined: June 17th, 2011, 12:59 pm

September 12th, 2017, 6:41 pm #5

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.........

Then align the vertical leg of the reticle with a string/weight hung upstairs at 18 yards......


Perhaps this sketch will help......


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!
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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Joined: June 17th, 2011, 12:59 pm

September 12th, 2017, 6:42 pm #6

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.
AWESOME IDEA!!! Thank you. NT
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Joined: June 17th, 2011, 12:59 pm

September 12th, 2017, 6:43 pm #7

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Joined: May 14th, 2004, 4:11 pm

September 12th, 2017, 6:55 pm #8

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Joined: February 28th, 2011, 4:45 pm

September 12th, 2017, 11:08 pm #9

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.
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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Joined: July 9th, 2015, 1:00 pm

September 12th, 2017, 11:49 pm #10

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.
because all my HW springers have a "flat topped barrel pivot block" to attach a magnetic torpedo level like this......



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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