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Eccentric Choke Tubes

Discussion in 'Uncategorized Threads' started by mercedesman1981, Mar 4, 2008.

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  1. mercedesman1981

    mercedesman1981 TS Member

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    It seems Briley will do this for you for a fee. As to effectiveness, someone else that has actually had it done will have to respond.

    Mike
     
  2. dbl20

    dbl20 TS Member

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    Briley made one for a skeet shooter I know. Seemed to work just fine. Porblem is he had to install it permenant. Jon Sharp
     
  3. Patrick Haskins

    Patrick Haskins Member

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    I had Kolar make one to make the top single barrel that shoots 60/40 shoot 75/25. It works well.
    Pat
     
  4. g7777777

    g7777777 TS Supporters TS Supporters

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    They work == Briley will do different ones both by constriction and also point of impact

    so you could have a full choke that shoots 12 inches high and a modified that shoots 18 inches hif for example

    regards from Iowa

    Gene
     
  5. Jawhawker

    Jawhawker TS Member

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    I've had tubes made for 3 different barrels to change POI. The last time it cost $65.00 per tube I believe which has been 4 years ago. There are limitations as to how far they can move a POI and I believe it was 6" effectively.
     
  6. crusha

    crusha TS Member

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    rmy,

    I've had a few of these made by Briley. I would not do it again. The cost, if I recall correctly, was about $75 7 or 8 years ago.


    The possible amount of pattern movement depends on the constriction. Tighter chokes have thicker walls at the outlet end, and thus can be moved further (on a more open choke, you have less wall thickness to begin with, and when they start removing it on one side, you can only go so far before you run out of steel).


    My tubes moved the POI just the amount they said it would, so their lathe process is accurate in my experience. However, if that tube loosens and starts to come out the slightest, and I mean slightest, bit...your pattern will rotate off into left (or right) field. You'll not only be off in the horizontal direction, but vertical too. If you don't have them semi-permanently stuck into there (as the poster mentions above), then you'll have to re-tighten them by hand at least every station of 5 shots to keep the impact from going weird (I tested this on paper, and it ain't no joke).


    It's a cheap and accurate solution if you're real attached to a particular gun, and is an easy drop-in mod that changes POI without affecting gun fit. But it just wasn't practical for long-term use for me.


    If you go that way, plan on getting some kind of loc-tite type material that works at high temp. Hand-tightening won't do...and the tighter you turn them in with a wrench, just means it'll be that much longer before it comes loose...which means you'll have that many more shots to forget about it...and when you forget...and it starts to come loose...your score will be in deep crap before you figure out what's happening.


    Of course, YMMV...
     
  7. timb99

    timb99 Well-Known Member

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    Why not an adjustable comb?
     
  8. Jawhawker

    Jawhawker TS Member

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    timb99, the reason I done it those three times was because one of the two barrels on those O/U's didn't have the same POI as the other.
     
  9. old tex

    old tex TS Member

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    Wilkinson also makes them and they are 1st class as you might expect.
     
  10. timb99

    timb99 Well-Known Member

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    Martin,

    That makes sense. Thanks.

    Tim
     
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