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Thread: Boing Test

  1. #1
    Join Date
    Aug 2008
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    Salem, NY
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    93

    Boing Test

    I just picked up a used sporter that shoots so so, I read an article on testing the barrel for the location of the dead spot of the parallel node. I found this spot about 5 1/4" from the end of the barrel. I was wondering what I could do to the barrel to get it at the crown. Do I have the barrel cut off at that point or is there something else I can do?

  2. #2
    Join Date
    May 2004
    Location
    Atlanta Ga.
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    314
    The node is going to be around 80% of free barrel length, so yes, if you cut some length, the node will indeed be closer to the muzzle.

    25" free length- node around 5" from muzzle.
    20" free length- node around 4" from muzzle.
    15" free length- node around 3" from muzzle.

    You see where this is going?

    You could also add weight ahead of the node to move it forward, but most add weight ahead of the muzzle to move the node toward the crown.

    But, if it's a sporter you wish to shoot in competition, a tuner is not a legal addition.

  3. #3
    Join Date
    Apr 2005
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    Recessing the crown into the barrel is one solution. Try moving your scope in the rings and moving the ring on the receiver. This will also change the resonance of the system. A presure point in the fore end of the stock is another option. Just wild guesses since I have no sporter experience. 8>)

  4. #4
    Join Date
    Feb 2003
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    Pine Bush NY
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    With a sporter your options are;

    1) Try to find ammo that it likes.

    2) Re-barrel.

    What action does your sporter have?

  5. #5
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    Aug 2008
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    Salem, NY
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    Remington 541 with a Hart barrel

  6. #6
    Join Date
    Feb 2003
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    upstate, N.Y.
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    Fred, I think you're gonna have to play with ammo first to see what you got. You risk eliminating interior bore choke if you cut, I'd probably shoot a few lots first IMHO.

  7. #7
    Join Date
    Feb 2003
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    893
    Quote Originally Posted by DonMatzeder View Post

    Try moving your scope in the rings and moving the ring on the receiver. This will also change the resonance of the system. 8>)
    Don M., how did you come up with and confirm this discovery?.........Don J.

  8. #8
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    Trial and error...certainly not from advice from any of the sporter shooters that support a sporter class to bring in new shooters,,,,

  9. #9
    Join Date
    Jan 2005
    Location
    Central Arkansas
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    Maybe a epiphany (sp ?) has ocurred for me.

    Are you saying that a tuner placed on the end of a barrel with adjustable length weights is there to adjust the "dead spot" to the mechanical muzzle, thus causing the bullet to exit at a point at which the barrel is not flexing?

    Pardon my lack of understanding, but I'm here to learn.

  10. #10
    Join Date
    Feb 2003
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    893
    Quote Originally Posted by DonMatzeder View Post
    Trial and error...certainly not from advice from any of the sporter shooters that support a sporter class to bring in new shooters,,,,
    Good find, and I concur, have been doing this for years and I am surprised more competitors have not picked up on it.............Don J.

  11. #11
    Join Date
    Apr 2003
    Location
    Wilkes County, N.C.
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    "Trial and error...certainly not from advice from any of the sporter shooters that support a sporter class to bring in new shooters,,,, "

    Don,
    In almost every case when someone asked a sporter question, they are real disappointed with an honest answer. An example is will a factory(----) compete with the benchrest sporters out there? duhh-NO. That answer makes 'em mad and then they want to argue that ole Billy Joe Bim Bob has one that'll beat 'em all, and off it goes.
    Truth is, in IR5050 and RBA there are sporters that'll shoot with or outshoot most big guns, if the shooter can see how to shoot 'em. There is a bunch of e'm out there too. The 6.5 power scope is the limiting factor.
    What I stated above is the reason most folks won't go out on a limb and try and answer questions. It starts arguements, and nobody wins with those.
    I'm game, what's your question? We need all the new shooters we can get!
    If I can answer it I will, but I warn you, I don't know much.

  12. #12
    Join Date
    Feb 2003
    Location
    San Antonio, Texas
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    2,537

    So true

    Kent:
    You hit the nail on the head. That's why you don't get very many family couples the will shoot Sporter in RBA or IR50/50.

  13. #13
    Join Date
    Feb 2003
    Location
    Upstate, NY
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    512
    What almost all new shooters fail to realize is that sporters are full blown bench guns built to different rule than the big guns. I don't want any changes to the rule, but, sporters are not sporters as most would visualize. Kinda like a cartop 12' fishing boat and a 100' luxury cruiser are both boats, just slightly different.

    Ken

  14. #14
    Join Date
    Apr 2009
    Posts
    3

    Sporter

    I agree that the Sporter is not a sporter. Want to make it a "sporter" class? Factory produced rifles only!! I have never seen a "Turbo" factory rifle sitting on the rack at any gun store I have ever been to. Just my .02 cents worth.

  15. #15
    Join Date
    Apr 2005
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    Arkansas
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    Problem is that you have seen an anchutz sitting in a rack and you will have serious guns dominating just as they do now. Nothing wrong with good guns in the class and all you have to say to a new poster is that these guns are special. The guys that shoot them like them the way they are and that is fine. No one likes an arguement, at least I don't, but honestly telling the new guys how to tune one and what it takes to win with one would go a long way towards pointing them in the right direction and avoiding the 10-22 type arguements.

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