1. Attention: We have put together a thread with tips and a tutorial video to help with using the new software. Please take a moment to check out the thread here: Trapshooters.com Tutorial & Help Video.
    Dismiss Notice

Perazzi choke number interpretation ?

Discussion in 'Shooting Related Threads' started by Hammer1, Oct 9, 2010.

Thread Status:
Not open for further replies.
  1. Hammer1

    Hammer1 Active Member

    Joined:
    Sep 26, 2010
    Messages:
    1,595
    .

    Looking at a Perazzi MT6 with screw-in chokes numbered 2, 4, 6, 8, and 10.

    Would someone please enlighten me as to their proper interpretation ?


    Hammer
    in Idaho

    .
     
  2. zzt

    zzt Well-Known Member

    Joined:
    Jan 29, 1998
    Messages:
    3,457
    Location:
    SE PA
    Perazzi chokes are designated in mm. Multiply the number of the choke by 4 to get the equivalent in thousandths of an inch.

    e.g.: Perazzi #4 choke x 4 = .016". That's LM.
    6 = .024".

    8 = .032"

    10 = .040" constriction.
     
  3. waverider

    waverider Well-Known Member

    Joined:
    Jan 29, 1998
    Messages:
    1,622
    Location:
    HI
    The IC thru XtrFull are Briley's reference and pretty much the modern American Standard.

    2 x .004 = .008 IC = .010

    4 x .004 = .016 LtMod = .015

    6 x .004 = .024 ImpMod = .025

    8 x .004 = .032 LtFull = .030

    FYI Full = .035

    10 x .004 = .040 XtrFull = .040
     
  4. EuroJoe

    EuroJoe TS Supporters TS Supporters

    Joined:
    May 3, 2008
    Messages:
    3,354
    Location:
    Rockford,IL
    Briley c/ts are in .005" increments
     
  5. Steve W

    Steve W Well-Known Member

    Joined:
    Jan 29, 1998
    Messages:
    5,101
    Location:
    Los Angeles
    Perazzi choke numbers are in 1/10 of mm.
     
  6. jhunts

    jhunts Active Member

    Joined:
    Aug 7, 2006
    Messages:
    935
    1/10 of a mm = 0.003937007874 inch
     
  7. PerazziBigBore

    PerazziBigBore TS Member

    Joined:
    Jan 29, 1998
    Messages:
    3,859
    What everyone said it basically true.. but the ability to be wrong is high.. Perazzi has made several different barrels..with different bore sizes.. and shooters have helped the confusion along well.. While the # is based on the original bore size.. whatever it might be.. the actual choke is the difference between the bore diameter and choke diameter.. For instance.. You have a barrel that measures .732.. Your choketube measures .710.. That gives you a .022 choke... Put the same tube in a .724 barrel..minus the .710 and you have a .014 choke.. vastly different.. despite what the numbers say.. A bore gauge does not lie.. and has no friends..

    I also caution shooters about using some of the older chokes in newer barrels.. If the skirt is exposed..and a wad can catch on them..you'll blow your tubes out of the barrel.. On the old MT-6.. often the barrels were backbored..and choketubes properly fitted.. Then after an owner or two down the line...unaltered choketubes were tried that were not modified for the larger bore.. Many a blown choke section was the results.. Hope everyone enjoys today.. All Good Mike
     
Thread Status:
Not open for further replies.
Search tags for this page
perazzi choke tube numbers
,

perazzi chokes numbers