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Thread: lengths of barrels

  1. #1
    Gone But Not Forgotten Toby's Avatar
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    lengths of barrels

    Im on phone atm googling will be to awkward so I will ask here. Whats the longest length in a .22lr barrel you can get before it starts making a bad effect on the projectile. Also same thing for a 6.5x55.

  2. #2
    Caretaker
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    .22lr -waaaay back in my remembering I think the projectile starts slowing down after travelling 16 inches of rifling.

    And a 6.5x55 -Are people still using these????????
    .22-250 everything likes this.
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  3. #3
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    Standard high velocity ammo 13 -14 inches some of the "newer" higher velocity ammo might be helped by an extra inch or two

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    Member andyanimal31's Avatar
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    Quote Originally Posted by 7mmsaum View Post
    .22lr -waaaay back in my remembering I think the projectile starts slowing down after travelling 16 inches of rifling.

    And a 6.5x55 -Are people still using these????????
    I cant beleive your still on a 7mm!
    7mmsaum likes this.
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  5. #5
    Almost literate. veitnamcam's Avatar
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    Somewhere on here is a link in a thread that showes optimum length(velocity) in 22lr, cant remember what thread try searching.
    "Hunting and fishing" fucking over licenced firearms owners since ages ago.

  6. #6
    Gone But Not Forgotten Toby's Avatar
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    Thanks guys.

  7. #7
    OPCz Rushy's Avatar
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    Toby, i am a bit sceptical. You are not going to make a .22 out of a bit of old pipe are you?
    It takes 43 muscle's to frown and 17 to smile, but only 3 for proper trigger pull.
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  8. #8
    Gone But Not Forgotten Toby's Avatar
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    Nope. Just thinking about it.

  9. #9
    Member zimmer's Avatar
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    When Anschutz introduced their 2013 target rifle they settled on 17.75" with the rest of the "barrel" just being a bloop tube. That is with target velocity ammo though. Anschutz probably know what they are doing. I had an article by a Yank somewhere where he progressively chopped of bits of a 22 barrel with hacksaw, did a very rough crown and tested. Kept cutting until velocity peeked and then started to reduce. Stopped at that point. I cannot remember the exact length but around 15-16" rings a bell. On some of the Yank forums they are also saying around 10.5". Maybe you could do the same experiment with your best 22?

  10. #10
    By Popular Demand gimp's Avatar
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    12" 10/22 gave same speed as 18"

  11. #11
    Member Happy's Avatar
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    One I shortened recently to 12" following Gimps comment above and it made no difference to the gun at all. Except its wicked to shoot now and light as ....
    "This is my Flag... Ill only have the one ..

  12. #12
    Gone But Not Forgotten Toby's Avatar
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    What about accuracy? I just measured 2 of mine 16 and 21 they had no differnce in speed. I know my single shot has a longer barrel then 21" so next time I get the chorny around here I will check it out

  13. #13
    Member Happy's Avatar
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    Quote Originally Posted by Toby View Post
    What about accuracy? I just measured 2 of mine 16 and 21 they had no differnce in speed. I know my single shot has a longer barrel then 21" so next time I get the chorny around here I will check it out
    No difference at all. Still pop starlings and Mynas easy as at 50 mtrs with subs same as before. My subs fall off after that anyway and always seem to have done that so I use .17 HMR for everything further than that.
    Bernie likes this.
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  14. #14
    Gone But Not Forgotten Toby's Avatar
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    Thanks for that. I want a longer barrel for my gun cause I thought it may increase accuracy over 50m. One more thing I was reading in some forum full of americans they said below 12" may be shorter cant remember precisley but that even HV ammo will only be subs. Is this true?

  15. #15
    Almost literate. veitnamcam's Avatar
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    Re: lengths of barrels

    Quote Originally Posted by Toby View Post
    What about accuracy? I just measured 2 of mine 16 and 21 they had no differnce in speed. I know my single shot has a longer barrel then 21" so next time I get the chorny around here I will check it out
    In theory a shorter barrel should be more accurate.
    Be careful when reading on accuracy with shortened barrels as some miss informed refer to accuracy loss with shortened barrels but what they are describing is bullet drop which has nothing to do with accuracy.


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