Windage problem

BHB

BHB

Member
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?
 
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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


Good Luck and let us know what it ends up being... (you may want to ask this question in the "Gunsmiths Corner")
Donovan Moran
 
Thanks. I will try gunsmiths section. Looks like a trip to the smiths after season.
 
I've seen barrels chambered "between centers" be this far out even with everything being "square."

This is why I now index bbls and point them where I want them instead of just By-Gosh-N-By-Golly

Some barrels is crooked

"Crooked Barrels Shoot Best"






al
 
alinwa said:
I've seen barrels chambered "between centers" be this far out even with everything being "square."

This is why I now index bbls and point them where I want them instead of just By-Gosh-N-By-Golly

Some barrels is crooked

"Crooked Barrels Shoot Best"
Click to expand...


+1 .... me too....

Donovan
 
Try another barrel even if you have to borrow one. Many of the barrels chambered "with the "range rod" method the muzzle is pointed off to the great unknown.

Next, I would mount the action on a mandrel, between centers on a lathe, then indicate the action face. Not all Nesekas are perfectly true on the face.
 
I screwed the barrel off my Panda onto the Nesika (same caliber) & gained one full round of windage (by boresighting) using the Kelbly/Davidson setup.
 
Same problem

I had the same problem on my .223 Savage. Tried different rings, different mounts, and even different scopes. Finally used a chamber bore sight laser. At dusk just before night time, set up a target, and moved it 25 feet at a time, to 150 feet. Keeping the rifle locked in place with a rifle vise, I could see the beam diverge from the cross hairs as I moved the target out. Turns out the scope mounting holes were slightly out of alignment. Fixed the problem with adjustable scope rings.
First I set the scope to horizontal center, after mounting the scope in the adjustable rings, I would move the target in and out (25'-150'). As I moved the target, I would move the adjustable rings so as to have no divergence, with beam to the cross hairs (tightening the rear one first, fine tuning with the front scope ring)
Rifle is now shooting right on 100 yards to 600 yards.

Gina
 
If an action is machined true, action face is perpendicular to the boltway, and the barrel is chambered by what I consider a proper method, when changing barrels the POI should be within a couple of inches at 100 yards.
 
JerrySharrett said:
If an action is machined true, action face is perpendicular to the boltway, and the barrel is chambered by what I consider a proper method, when changing barrels the POI should be within a couple of inches at 100 yards.
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But they're not :)

Stubby fat BR barrels generally YES, but not most barrels.

I've had longer, fluted, slimmer barrels be off by more than a foot at 100yds................ more than once.

al
 
alinwa said:
But they're not :)

Stubby fat BR barrels generally YES, but not most barrels.

I've had longer, fluted, slimmer barrels be off by more than a foot at 100yds................ more than once.

al
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Were the long, skinny, fluted barrels aligned at the muzzle when they were chambered or did you use "range rods"? If a barrel has zero runout at the muzzle when it is chambered I can't see how it would be off a foot! Tell me how a bullet can go on a curved horizontal path after it exits the muzzle regardless if it has several curves between the chamber and the muzzle.
 
JerrySharrett said:
Were the long, skinny, fluted barrels aligned at the muzzle when they were chambered or did you use "range rods"? If a barrel has zero runout at the muzzle when it is chambered I can't see how it would be off a foot! Tell me how a bullet can go on a curved horizontal path after it exits the muzzle regardless if it has several curves between the chamber and the muzzle.
Click to expand...


:)


The long skinny barrels weren't done by me and my chicom Grizzly, but by some of the greatest names in BR Gunsmithing, on machines with names beginning with 'H' and runout measured in millionths.....I've had to lap rings over to get on paper at 100yds.

I'm not "telling you" anything Jerry, just stating fact.

Now ME, myself, I point the barrels wherever I want them. Yes, some of them are off a foot or more too but I know that before I ever send a bullet down the tube. And can predict where it will hit.
 
alinwa said:
:)


The long skinny barrels weren't done by me and my chicom Grizzly, but by some of the greatest names in BR Gunsmithing, on machines with names beginning with 'H' and runout measured in millionths.....I've had to lap rings over to get on paper at 100yds.

.
Click to expand...


Spindle runout in millionths has nothing to do with installed barrel POI. A proficient machinist/gunsmith can take any old worn out lathe American, Japanese, or Chicom and do a quality and winning barrel fitting!. Its the alignment method used that determines if the barrel muzzle is pointing in the same direction as the rest of the rifle or not!!!
 
JerrySharrett said:
Spindle runout in millionths has nothing to do with installed barrel POI. A proficient machinist/gunsmith can take any old worn out lathe American, Japanese, or Chicom and do a quality and winning barrel fitting!. Its the alignment method used that determines if the barrel muzzle is pointing in the same direction as the rest of the rifle or not!!!
Click to expand...

;)

thank you


BTW, THESE pertickler lathes, which chambered the long skinny barrels, were run by rather competent machinists, legendary even. Bench Rest machinists of the first water.

al
 
alinwa said:
;)

thank you


BTW, THESE pertickler lathes, which chambered the long skinny barrels, were run by rather competent machinists, legendary even. Bench Rest machinists of the first water.

al
Click to expand...

Al, there are different strokes for different folks. I just find it unnerving when I screw on a new barrel then have to go to a 24" x 24" paper at 25 yards to zero the scope...then sometimes the scope won't go that far!!!!
 
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