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Forum Index > Rifles general discussion > Barrel Lengths for .22LR

Barrel Lengths for .22LR

30 Oct 2017
@ 09:14 am (GMT)

Andrew Murray

Hello and happy Monday. I was wondering about the barrel lengths for the .22LR?

The crown on my old CZ is a bit rusty. Not terribly so. I should get some photos but I can't at present, it's not stored where I live. It's a CZ452 Lux model. Very nice, got it when I was 14.

It comes with a 26" barrel. Currently shooting about 25mm groups at 100yds with Winchester 40gr PowerPoint. Other ammunition groups roughly the same except the super high velocity stuff. CCI Stingers and Winchester HyperVelocity ammo opens the groups right out to about 100mm. I haven't shot it at less range for a while but 100yds is further than I want to shoot it. At that range it drops roughly 50cm I think. For competition only at that point.

So in order to remove the rust I had though about getting a new crown done but was wondering if the barrel was too long for such a low powered cartridge.

In truth it could benefit from free floating and bedding too but right now that another story.

Replies

30 Oct 2017
@ 11:23 am (GMT)

Jonathan Kitterman

Re: Barrel Lengths for .22LR
Look up Rimfire Central forum and browse over there. It should have plenty of information and opinions.
30 Oct 2017
@ 01:51 pm (GMT)

Paul Leverman

Re: Barrel Lengths for .22LR
Hey Andrew - don't know where I read it, don't know who said it, don't know why it was determined, but somehow I remember that the "proper" length for the 22lr was somewhere in the 18-1/2" zone. It is a pretty low pressure cartridge, and I wonder if any extra length might be a hindrance instead of a benefit. I am sure someone has done the bore/case/pressure ratio math and come up with the right number. Rimfire Central is a good source as Jonathan mentioned. Pretty decent people there.
30 Oct 2017
@ 09:26 pm (GMT)

Mike Davis

Re: Barrel Lengths for .22LR
do internet search on it...I know of guys who have whacked barrel right down 1" at a time and run it through chrony all the way down to rediculas short. the funny thing is it SPEEDS UP to begin with then steadies then drops.... you can have trouble getting bullets subsonic if too short I believe is the theory,left long they slow down once past powder burn/pressue peak sort of thing.
I think above post is about right the 18" sort of thing is about ideal,I know my norinco is far too long but I dont want to pay $60 to get it recrowned and threaded.
31 Oct 2017
@ 01:56 am (GMT)

Bryan Webster

Re: Barrel Lengths for .22LR
My most accurat Anshutz .22LR has an 18 inch barrel and great, consistant velocities. I would not even think about anything shorter than that. My Ruger 10/22 ha a Shilen select match grade 18 inch barrel and shoots a wee bit less accurate than most of my Anshutz rifles - but then it is a semi auto not a reliable bolt gun.

I suspect powder used by the manufacturers makes a difference similar to selecting burn rates when reloading for short barrels in a .308 or etc. For my centerfire rifles I onluy have one with a 20" barrel. Most are 22 to 26 inches and my favourite bbl length for them is 22 for compactness and light weight.
Am seriously thinking of buying a Sako 85 Carbon Lite with its 20" barrel, astounding accuracy and light weight in 7mm-o8 after spending several days in rough country packing a 9 pound 7mm Rem Mag.
Sorry slightly off the subject.
31 Oct 2017
@ 02:29 am (GMT)

David Bath

Re: Barrel Lengths for .22LR
From what I have read most normal loads get Max velocity in 16". I don't chrono, but my cz 16" is same moa out to 100m as my 21"......
HV loads are a bit louder in the short barrel.
31 Oct 2017
@ 07:03 am (GMT)

Bryan Webster

Re: Barrel Lengths for .22LR
Some manufactured rifles like Anshutz choke the barrel near the muzzle. Cutting such barrels down might adversly affect accuracy. (something I read but not certain if this is true or not.)

My liking the 18 inch barrel over the 16 inch has a lot to do with the fact many jurisdictions have a legal limit on how short a barrel length is allowed...like the USA where it is 16". The noise from the 16" barrels is a lot louder as well compared to the longer barrels.

I have read that the 16 inch barreled .22LR have the fastest muzzle velocity and I know Anchutz as well as others offer 16 and longer barres, however it seems to me the more popular 16" barreled rifles are the semi-autos like the Ruger 10/22 with a short heavy barrel. I have such on my 20 inch barreled .308 and would prefer a 24 inch sporter barrel, as for hunting, sporter barrels can be nearly as accurate as the heavy barrel on my 700P LTR and are a whole lot nicer to pack up and down the mountains I hunt.

If I am hunting with any .22LR I like a lighter barrel on a rifle around 7 pounds, someting my Anchutz rifles give me in that 18 inch barrel length. (A personal thing)
31 Oct 2017
@ 07:45 am (GMT)

Andrew Murray

Re: Barrel Lengths for .22LR
Thanks everyone.

A.bit to think about there. I'll head over to rim fire central and see if they know about the muzzle squeezing issues. Wouldn't want to bugger anything up
 

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