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New Perazzi barrels 4 Sale

Discussion in 'Uncategorized Threads' started by Stuart, Nov 5, 2008.

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  1. Stuart

    Stuart Member

    Joined:
    Jan 29, 1998
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    I have a 31 1/2" O/U new set of Perazzi barrels available. Choked .032/.024. The bore is .736 They have the baby steeped tapered rib and vented side ribs. Can choke to what ever you like or install Series 12 tubes. Perazzi Dealer price $3227. Selling fo $2800. With Chokes(5)$3000.Great Sporting Clays barrels.
    Thanks
    Stu Wright
     
  2. Gregg535

    Gregg535 Member

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    Jan 29, 1998
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    Stu Wright,

    Are the thin wall chokes "Series" number a function of the bore size --- so that a Series 1 would equal 0.725 ....... and on up to the Series 12 you mention being a 0.736 bore diameter?

    Thanks, Gregg
     
  3. Stuart

    Stuart Member

    Joined:
    Jan 29, 1998
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    Greg, What determines what Series Chokes goes into a barrel is the ID Bore diameter at the gas seal and the OD outside diameter of the barrel. These Series of chokes were developed by Briley over the years. There are about 10-12 different sizes. Series 1 is for the thinnest of barrels, with a OD of .800 and a Bore measurement of .725 at the gas seal. If the bore is larger than that then we use a Series 26 for bores up to .730, but the OD needs to be .810 Then a Series 2 for bores of.735 and a ODof .815 or larger. Also must measure the wall in several places and subtract the variance. Concentricity.
    These Perazzi barrels are .736 and require a Series 12, which will also accomadate up to .745. There is a Series 54 that will fit .740 barrels but it is seldom used. That would make the availability of others scarce, so we go with S12.
    These chokes end up being 3.3" in length and have very gradual tapers and will pattern in excess of 90% even with soft shot.
    Thanks
    Stu
     
  4. Gregg535

    Gregg535 Member

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    Jan 29, 1998
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    Stu Wright,

    Thanks a lot for that info. I will save it and it will really help in clearing things up as I have tried to make some sense of it over the years when seeing what "Series" of thin walls was used in a particular gun.

    When installing thin walls in a barrel that is only within say 2 or 3 thousanths of the nearest size of the tube series, is it necessary to overbore part(or all) of the barrel first? For example, when installing a Series 1 ---0.725 set in a barrel that measures out at only 0.722?

    Thanks, Gregg
     
  5. Stuart

    Stuart Member

    Joined:
    Jan 29, 1998
    Messages:
    120
    Greg, No you welcome the offset. Every choke needs a step between the ID of the choke and the ID of the barrel. With out it you will in time shoot it out the end. Crud will get behind the threads and deform the skirt of the choke and the choke will be inside the bore. Next few shots and you loose the choke and maybe bulge the barrel. We like to take a right angle sharp scribe and slide it into the choke. You want to feel a lip or catchas you slide it down. Next move the scribe past the choke and pull it out, you don't want to feel a catch or you and the choke will soon part company.
    We have tested several different chokes to determine how much step before you start effecting pattern. We have gone out to .010 per side and absolutely no effect.
    Stu
     
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