/ Register

scope unlevel (cant)

Discussion in 'Rifles, Bullets, Barrels & Ballistics' started by Cassman, Oct 20, 2019.


Help Support Long Range Hunting by donating:


Page 1 of 3
  1. Oct 20, 2019 #1
    Cassman

    Cassman Member

    Messages:
    5
    Joined:
    Nov 23, 2016
    I mounted a scope on my gun, don't have a high dollar level, just normal level from hardware store,,put gun in vice got it level, mounted scope got it level...go sight it in 100yards...dead on bullet in bullet,,,,
    go to 300 yard target,, shoots 3 inches to the right...let friend shoot,,,make sure its not me,,,same place 3 inches right,,,,so I been reading and I believe that my scope and gun are not perfectly level to each other....scope cant its called... so which way do I need to move my scope if im standing at the butt of gun(stock) looking at scope....left or right?
     
  2. Oct 21, 2019 #2
    DENWA

    DENWA Well-Known Member

    Messages:
    134
    Joined:
    Aug 27, 2008
    3" at 300 yds would be a bit of cant.
    I would recommend you take a 4 foot level at 100Yds and put your rifle in a vice.

    see if the cross hairs align with the level.
    If they are straight then I'd look a load stability, as I have seen this before with factory ammo
     
    skipglo likes this.
  3. Oct 21, 2019 #3
    jimbires

    jimbires Well-Known Member

    Messages:
    1,377
    Joined:
    Mar 16, 2008
    aushunter1 likes this.
  4. Oct 21, 2019 #4
    Deputy819

    Deputy819 Well-Known Member LRH Team Member

    Messages:
    836
    Joined:
    Sep 24, 2016
    Did you make sure the reticle was “plumb” after leveling the rifle?
     
    Hatrick likes this.
  5. Oct 21, 2019 #5
    ShtrRdy

    ShtrRdy Well-Known Member

    Messages:
    2,248
    Joined:
    Jan 14, 2012
    3" at 300 yds seems like a lot of impact shift due to cant. Could there be wind anywhere along the path of the bullet that could have pushed it?
     
    Black Hat and Deputy819 like this.
  6. Oct 21, 2019 #6
    Cassman

    Cassman Member

    Messages:
    5
    Joined:
    Nov 23, 2016
    it looked level when I looked thru scope...but apparently it was not...
     
  7. Oct 21, 2019 #7
    Cassman

    Cassman Member

    Messages:
    5
    Joined:
    Nov 23, 2016
    just a slight wind
     
  8. Oct 21, 2019 #8
    DUSTY NOGGIN

    DUSTY NOGGIN Well-Known Member

    Messages:
    513
    Joined:
    Mar 18, 2015
    3" at 300 .. you would be able to tell with just your eyes

    it may be off a little .. but it also must be something else
     
  9. Oct 21, 2019 #9
    DUSTY NOGGIN

    DUSTY NOGGIN Well-Known Member

    Messages:
    513
    Joined:
    Mar 18, 2015
    if its dead on center at 100 .. your scope must be sitting on the rifle to the left of centerline .. in order to cross the path at 100 .. still moving to the right

    both of those problems i think you would be able to see without use of any tools
     
  10. Oct 21, 2019 #10
    Hatrick

    Hatrick Well-Known Member

    Messages:
    638
    Joined:
    Sep 15, 2016
    Hang a 1/2” white rope at 100 and level your rifle and check plum on the weighted rope.
     
    DENWA and Deputy819 like this.
  11. Oct 21, 2019 #11
    Bigeclipse

    Bigeclipse Well-Known Member

    Messages:
    1,455
    Joined:
    Aug 10, 2012
    this x2.
     
  12. Oct 21, 2019 #12
    Bravo 4

    Bravo 4 Well-Known Member

    Messages:
    3,401
    Joined:
    Jul 20, 2007
    If it were just wind, it would take around 10 mph full value to blow it off 1 moa (with most bullets at reasonable speeds). That shouldn't go unnoticed.
     
  13. Oct 21, 2019 #13
    BountyHunter

    BountyHunter Well-Known Member

    Messages:
    5,159
    Joined:
    Jun 13, 2007
    To check at 100 it is called the tall target test and pretty easy to do. It also allows you to check the exact distance each click really is on your scope vs what the mftr says it is. They are routinely off and you dial the wrong elevation and think something is wrong with your data, no the scope clicks are not what they say. Just google tall target test.
     
    Last edited: Oct 22, 2019
    jasent, Black Hat, Bill Cauley Jr and 1 other person like this.
  14. Oct 21, 2019 #14
    ShtrRdy

    ShtrRdy Well-Known Member

    Messages:
    2,248
    Joined:
    Jan 14, 2012
    For my .308 Win it only takes 5 mph full value wind to move it off 3" at 300 yards. ( according to my ballistic program )
     
Page 1 of 3