I need help with my rimfire scope

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sksnujack

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i just recently got a 10/22 and a 3-9 x 32 bushnell rimfire scope which i mounted and took to the range today.

its my first scope so i dont know too much about mounting and sighting them in.

anyway, i was shooting at 50 yards to begin sighting it in and the thing was off about a foot to the left and down a foot. i maxed out my windage and adjusted my elevation considerably and it still made no difference with the possition of my shots. is there something im doing wrong? could it be the way mounted the scope or maybe the scope is not adjusting?

i found this very frustrating as i was quite excited to test everything out and get that damn thing sighted in.

any help would be greatly appreciated. :D
 
The cross hairs didn't move?

The internals may be jammed at the end of their screw adjustment.
Try tapping the scope a few times on the turrets then try again,
Cat
 
catnthehatt said:
The cross hairs didn't move?

The internals may be jammed at the end of their screw adjustment.
Try tapping the scope a few times on the turrets then try again,
Cat
Click to expand...


And if that doesn't work, you could always exchange it...
 
Crank the scope elevation to as far up as it will go, then count the number of clicks to full down. Come back half that number of clicks and the elevation will be centered. Repeat the exercise for windage. Now the cross hairs are mechanically centred.

Next, remove the scope from the rifle and remount the bases or bottom part of the rings, swapping front with back. I usually use a 1" wood dowel to ensure that the rings/bases are roughly parallel and centred with the bore. Just lay it in the rings and eyeball it.

With the bases/rings tightened down, re-installed the scope and tighten the upper portion of the rings. Make sure that you:

a) have the reticle square/parallel with the bore,
b) the scope turrets should face up (elevation) and to the right (windage)
c) check the eye relief is good for your cheek to stock weld.

Tighten the upper portion of the rings, being careful not to move the reticle's alignment as you go. 10/22's are difficult to boresite without a boresite tool, so we'll not worry about that for now.

Back to the range, start shooting groups, remembering that on most scopes, the turrets move bullet impact. ie if you're centred on the bull and the POI is to the left, move the windage to the right.

Hope this helps.
 
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I've also heard of some 10/22s with a slight "hump" on the top of the receiver (some at the rear of the receiver and some at the front).

I would start by ensuring everything has been installed correctly and that your screws are snug.

Just my 2cents.
 
skeetgunner said:
Back to the range, start shooting groups, remembering that on most scopes, the turrets move bullet impact.
Hope this helps.
Click to expand...

Technically speaking you are not moving the point of impact, you are moving the crosshairs to look at the point of impact....letting your scope chase the bullet hole.:eek:

604shooter said:
I've also heard of some 10/22s with a slight "hump" on the top of the receiver (some at the rear of the receiver and some at the front).
Click to expand...


The Ruger receiver is investment cast. As the mold wears with continued use a "hump" develops in the mold on the top of the receiver just at the front edge where the scope mount attaches. This is not present in all receivers but you can easily check it on your receiver by holding a straight edge along the top and then holding it up to a lighted background to check for flatness. If present this will tilt your scope up, thus causing your barrel to shoot low, and necessitating raising the elevation of the scope to compensate. To fix this problem, You can File the top of the receiver flat underneath the scope mount. If you never intend to use open sights this modification will never be seen.

Many, but not all, 10/22's (especially with free floated heavy barrels) suffer from "barrel droop". When Combining a Barrel drop with the above mentioned "Ruger Hump" serious misalignments can result. As the 10/22 wasn't designed for a free flotting barrel ...It depends on the stock to support the barrel and actually hold it up. Also, There is the way the barrel attachment system is designed that is of no help. When the replacement barrel is installed and if you can rock it back and forth in the receiver before tightening the vee block, its going to pull the heavy bull barrel down when tightened. If this has occured, chance's are you will have a barrel drop and this rifle if going to give you elevation problems when zeroing a high powered scope. Owners with a barrel drop have complainted they have run out of "up elevation" adjustment and the rifle is still shooting low. This is usually with a higher Powered scope, say 18 power max magnification and above. These scopes just have a narrower range of adjustment than the lower powered scopes. Although This problem is unlikely with a low powered scope (ie, 3-9x), it should be taken into consideration.




Now with that in mind, it doesn't explain why you would run out of windage adjustment. I believe you probably have a faulty scope.... hence my first post "you could always exchange it."
 
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well i followed all of skeetgunner's instructions now i just have to go to the range and try it out again. i dont have a lot of time this week so ill have to wait till next. thanks for all the help guys!:D
 
Before you start messing around with the scope. start sighting your rifle in at 25 yards. I sighted my 10/22 in at 25 and then moved up to 50.
The rimfire cartridge has a radical trajectory, you need to find the midpoint of the trajectory apex before you decide what yardage you sight it in at.
 
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