Windage problem

[BHB]

I have a Nesika model K actioned rifle I purchased used that has a windage problem. When I first mounted the scope I used Burris Zee rings with inserts. Being it was 30mm not much adjustment inserts are included with rings. I thought maybe the original bases that I got with the rifle might be the problem. Bought new Nesika brand Davidson style bases & Kelbly rings. With the Burris I gained a little right windage . I lost some windage with the Kelbly's. What would cause the gun to shoot so far left ? I'm almost out of right windage & would this affect the elevation ? The gun is used out to 600 yards. What are my options for a fix to this problem

 

[dmoran65]

Four things come to my mind as possible culprits:

1) Mounting holes in the action are out align -- fix = blueprint/true the alignment

2) Barrel to action alignment -- fix = refit the barrel, assuring tenon is square

3) Bore is in poor alignment to the barrel contour -- fix = index the barrel high to a 12 or 6o'clock position

4) Scope issue -- fix = try other scopes to comparison, return for warranty if culprit


Good Luck and let us know what it ends up being....
Donovan Moran

 

[Boyd Allen]

I think that you had the solution in you hands and did not follow through. The Burris inserts are available up to +- .020. I am sure that the right combination would fix your problem. I generally put in the zero inserts, center the scope by rolling it in a V block setup that I made, and shoot a round or two at a 50 yd. target (measured distance), after checking the view through the bore with the reticule on the aiming point, to see if the bullet will hit the paper. Then I measure the horizontal and vertical distances that the bullet hole is from the aim point, the center to center spread of the rings, and do a little math to come up with what inserts I will need, and how they need to be rotated in each ring. One little detail that might give you more confidence, the current tiny five shot group record at 600 yards was using those rings. That is for the fellows that like to sneer at things that are not made of metal.

 

[BHB]

The 30mm rings only come with + - .010 inserts & O inserts. 1" have the .020 capability.

 

[Greyfox]

The 30mm rings only come with + - .010 inserts & O inserts. 1" have the .020 capability.

You are, of course, correct about the limitations of 30mm Burris rings. You probably already know this, but if you use a +.010 and the front and then reverse a +.010 on the rear, you can gain quite a bit. I have a Model K as well and they can be problematic, but mine does shoot very well. Unfortunately, the company has moved around so much that warranty for it is probably non-existent. I know for a fact that Jim Borden doesn't want any part of one. I would probably contact Chad Dixon for some advice, he spent some time on the phone with me a couple of years ago and saved me some $$ correcting a major headache.

Rick

 

[xs hedspace]

I corrected a Win M70 "target model" 30-06 scope base hole misalignment problem, by reversing one ring. Vintage 1970 M70, had to do epoxy bedding to center the barrel in the stock channel---nice Quality Control....bought used, and I wondered why the factory Redfield rear was cranked way over.

 

[Mike Bryant]

I had a rifle that didn't have enough windage with a picatinny rail mount. Went through and checked everything, that the barrel was centered, rail was in line with the action, base screws were in line with the action and there weren't any problems in those obvious places to check. I centered the scope then took enough off of the dovetail side of one of the rings to move it over on the rail to where the scope lined up on a boresighter. Then lapped the 30mm rings to make sure it wasn't putting the scope into a bind. Never did know what the problem actually was, but the rifle was in the center of the windage adjustments and shot well. I suspect that the interior of the action wasn't in line with the exterior of the action, but it just shows there is more than one way to correct a problem.