Accuracy of the NS522 why are they so accurate??

[dizzy]

Has anyone pushed a plug through the bore of a NS 522? it would be interesting to hear the comments from someone who has pushed a plug through a NS522 and compare that to an Anschutz 54. The annies, and the suhl when pushing a plug have a somewhat loose bore. Once the plug is pushed past the initial resistance of the chamber the plug moves very easily down the bore until it gets to about 3 inches from the muzzle, then you really have to push on the plug to get it to come out. This is because the barrels in these higher end target rifles are choked. And that choke is a result of hand lapping…usually. Since the barrels on the NS522 are hammer forged they can actually choke them without having to hand lap, or they can taper the bore so it gets tiger at the muzzle. It would be very interesting to see if they are choked. My guess is they are, and that is likely the reason they are so accurate.

I did post this in an NS522 thread but thought the accuracy discussion would benefit from a thread of its own.

 

[super7]

I know they do this with airguns but I didn't realize that it was done with rimfires......make you think twice about shortening a barrel

 

[Hitzy]

There is also no throat....when I chamber a round the bullet is into the rifling. This also helps with accuracy.
Check it next time you are out shooting.... 40gr lead solids will show rifling marks if you chamber and eject it.

 

[ratherbefishin]

I've cut my .22 barrels,but NOT this one

 

[BCRider]

There's a bunch of references to how a tapered bore leads to greater accuracy. Something to do with the bullet being stabilized as it's squeezed through that last little bit of the barrel.

 

[Captain Ron]

Instead of shortening the barrel from the muzzle, why not from the breach end and have it fitted to something like a 10/22?
$200 for an accurate barrel and sell the clips for $50 ea. and toss the rest. Might be a cheep way to bump up a 10/22 or something else.

 

[marcoman]

There is also no throat....when I chamber a round the bullet is into the rifling. This also helps with accuracy.
Check it next time you are out shooting.... 40gr lead solids will show rifling marks if you chamber and eject it.

This is not un-common at all for most decent .22's. maybe something special for a Norinco though...