10/22 barrel cocked, big deal?

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kayak-man

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when I was zeroing my Ruger 10/22 takedown a few weeks ago, I noticed that the windage adjustment was cranked way over to the left (I put a pair of tech sights on the rifle). I did some googling, and it sounds like the barrel isn't squared to the receiver. It also sounds like on the take down model, the fix is pretty simple. What I want to know is, is it worth trying to correct?

I didn't get to shoot it a lot (I forgot most too the ammo and only had 50 rounds) but I was able to get it zeroed, and I didn't bottom out the windage adjustment, so I'm thinking of just leaving it alone. My only concern is I'm planning on using it for a little small game hunting, so if it's possible that this would screw up the accuracy then I probably should fix it.
 
Yes its worth correcting. Off axis not good. The bullet will be traveling more off center with a change in target distance. The amount may be very small, if comparing 25 to 50 yards.

Same as a 30-30 lever action with a scope side mount. Sighting in at 25 yards , then shooting at 100 yards, major change in point of bullet impact,
 
Update: upon inspection, I found that the barrel was rotated counter clockwise about 10 degrees. I think I've corrected that, but there aren't enough flat surfaces on that gun for me to use levels and compare and confirm. I'll be re zeroeing it soon.

Follow up questions:

Other than re zeroeing and acquiring dope at various distances, any tips on confirming barrel rotation and alignment?

If i find that after re zeroing, there is a windage error at other distances, what would be the next step in correcting that?
 
If you are using a front sight attached to the barrel its crucial. With an optic, if its grouping well with a good zero I'd leave well enough alone. YMMV.
 
The tech sight, mounted on the receiver, may cause a change in zero/accuracy ever time the barrel is removed and installed? Its better if both front and rear sights are mounted on the barrel.

I could be wrong, having not owned a take down model.

close-up-rear-1.jpg
 
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Ok guys, I get the impression I wasn't very clear with what was going on, so I drew a picture.

First off, I am not talking about a shift in zero after the gun has been taken down and re-assembled. Prior to investing in the tech sights, I read a lot of reviews and searched through the appleseed forums to see if people were having any problems with that, or with enough deviation from shooting with sling tension, for it to be a problem. The ratio of positive feedback to negative feedback was significant enough for me to feel comfortable putting receiver based sights on the take down and not worrying about zero shift unless it starts appearing as a problem on the square range.

In the picture Ive attached, #1 shows the source of my initial concern: the rear having to be adjusted significantly to the left. After some googling, the number one answer that kept coming was that instead of the barrel being horizontally alignedto the receiver as in figure A, it may more closely resemble figure B, where the barrel is horizontally out of allignment.

Earlier this week I was looking at the rifle, and become aware that rotational alignmentlooked to be off, as in #D-II. It was corrected to better mirror D-I.



At the range yesterday, I fired at 10, 50, 75, and 100 yards. 10 and 50 were on paper, but I didn't have a a rucksack to zero from, so I know I need probably need to fine tune the zero a little, but, somehow, it was still on target enough for me to consistently nail pop cans, clay pidgeons, and a polymer groundhog target. This was done entirely from kneeling and offhand, and the rifle does not yet have a sling. Based on this, I think I will confirm on paper one more time at fifty and one hundred, but I doubt it will need a gross sight adjustment.
 

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B and D ll are both off axis conditions. Not what is wanted.

Picture a line running through the center of the bore. The front and rear sights should sit perfectly centered over the bore. This is how it should be in a perfect world.

But bullet rotation from a right hand twist moves the bullet inpact to the right. Not noticeable at short distances of a 22lr.

You have solved the problem by rotating the barrel 10 degrees, to put the front sight directly over bore center.

How to get all perfectly aligned? Google "Anti-Cant Devices" https://www.midwayusa.com/anti-cant-devices/br?cid=22950
 
With the problem corrected, I'll chime in on the slightly negative. I spent an afternoon with my son's TD first using a bipod off the bench and was wildly off from the initial zero with a traditional rest/rear bag combo. Shots were inconsistent when preloading the bipod and still well off when just rested.

Next up was a NM style sling that fared better but was still noticeably off at 25 yards. The adjuster was tensioned to a light interference fit and the rifle is scoped with a 4X Nikon. At least the slung combo was more consistent but I'd advise sighting in that way if you plan to shoot with a sling.
 
Skyler, I can see the td being less than awesome with a sling. When I initially sighted mine in, I used a backpack as a rest, and had no poi shifts between shooting prone, kneeling, sitting, or off hand. i find with this rifle that it is accurate enough out to 100 yards that I don't think I'll sling up with it, and since it's in a magpul backpacker stock which doesn't have a sling swivel in the fore end, it's kind of a non issue.
 
The idea of slinging it was more for woods carry but figured I'd give it a go. My 13 year old isn't the best off-hand shooter so I've been preaching...er...teaching him to use any available support. The attachment point on the rifle is a replacement barrel band with sling slot and two short picatinney rails. Not the most ideal part or placement but it does work for the carry portion.
 
If you feel like fiddling with it, and try to get the sling off the barrel band and a little closer to the action, I suspect that could decrease the poi shift.
 
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