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Perazzi Firing Pin Advice

Discussion in 'Shooting Related Threads' started by Hooligan, Sep 7, 2013.

  1. Hooligan

    Hooligan Member

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    I would much appreciate some advice from the Perazzi gurus. I recently purchased an O/U MX8 in beautiful condition. Proof code BM (1999) Ser 115470. It is tight with the lever well to the right. I noticed the spare firing pins supplied in the kit with the gun are single piece type. Inspection of the pins in the gun reveals
    that these pins are also single piece ( upper and lower.) The firing pin holes in breech block face appear to be not worn. It was my belief that genuine Perazzi pins were always 2 piece. Am I wrong? Should I replace the pins or did Perazzi
    manufacture some guns with single piece pins.
    Barry
     
  2. white rattler

    white rattler Member

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    Barry, the older pins from Perazzi were one piece the newer ones are a two piece some people think that the one piece is a better pin. I would say that your gun came with the newer pins and someone has replaced the pins with the one piece pin. Trevor Dawe.
     
  3. Steve W

    Steve W Well-Known Member

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    Barry,

    The old style pins were two pieces front and back, the newer pins are two pieces sleeved together in black color . They look like one piece.
     
  4. white rattler

    white rattler Member

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    Steve, there is also a one piece pin that is on the market. Like I said it is a solid machined one piece pin. Trevor Dawe.
     
  5. Hooligan

    Hooligan Member

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    Thanks Trevor and Steve for the quick replies. I am in Aus and can only guess the pins are genuine Perazzi!!! Steve, the pins are black and will not pull apart.
    Should they come apart easily? According to the info on Whiz Whites site the hammers are of the late model type along with the shape of the pins. I am getting more confused by the minute. The reason for my enquiry is that I have been advised that solid pins cause more wear to the holes in the breech face. If that is incorrect I will not worry about it. Barry
     
  6. Steve W

    Steve W Well-Known Member

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    Barry,

    Here's a picture showing two factory pins,

    Silver one is the old style with front and back two piece, Black one is the new style two pieces sleeved together, outer sleeve is softer metal to reduce wear on the receiver, they don't separate unless broken.

    Trevor, yes there're many after market one piece firing pins available, some even made of Titanium.

    They claimed not to break as easy as factory ones, but in theory, they might cause more wear to the receiver if they are harder than receiver.

    Is the factory pin over engineered that cause breakage? I have no answer to that, but IMO, changing firing pins are a lot cheaper than rebuilding receiver holes.


    stevew_2008_030312.jpg
     
  7. Hooligan

    Hooligan Member

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    Steve
    The pix are really appreciated as is your description of the pins. I would appear that I have the new style and I will stop worring. Thanks again Barry
     
  8. GunDr

    GunDr Well-Known Member

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    Here's a little more on Perazzi firing pins...

    The original firing pins up until several years ago, were a two piece pin, the same as today with this exception...The new style pin has the smaller diameter passing completely through the larger firing pin body. You generally can see the end of the pin at the rear. The older firing pin did not pass completely through, giving it the appearance of being a one piece.

    Jumping briefly to the subject offiring pin holes, where did the idea that the firing pins will "wear out" the firing pin holes. Since the dawn of firing pins and primers, every manufacturer had a firing pin located in a hole and had no concern of wearing a hole, but the subject always arises when speaking of Perazzis.

    There are two hole diameters on most guns, with the larger being for the firing body and the other being smaller for the pin that strikes the primer. With 30 years plus working on these guns I've yet to ever see the larger diameter "egg-shaped" because of the angle it passes through the receiver. Even those guns that might have 300k rounds shot through them. Frankly, I think its a nonissue.

    As for the smaller diameter, it comes down to two issues. The first has to do with the material the receiver is made from, and the second has to do with the harder steel caps on the primers. During the 70's, 80's, and through the mid 90's, damage around firing pin holes was a rare occurance. Most everyone either purchased or reloaded their ammo using primers that had either brass, copper, or aluminum as the material of choice for the cap on the primer. I don't recall what CCI was using, but i would guess it was a chromed brass.

    Somewhere around the late 80's to mid 90's, Federal began using a steel cap, and that was when we began seeing firing pin hole damage, particularly on Perazzi and Remingtom 3200. As other ammo manufacturers began switching to steel primers the problem has esculated, but mostly sicking with the Perazzi and 3200.

    I guess time will tell if the newer Perazzis are made with a stronger alloy steel to diminish the damage. With most of the smaller manufacurers using material like 4140, the damage just doesn't seem to exist. I doubt the ammo manufacturers are going to change their reciepe.
     
  9. Barry C. Roach

    Barry C. Roach Well-Known Member

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    I'm trying some of Marcello Guilliani pins this year. Not enough rounds to see how they're working out. His are two piece as well.
     
  10. Hooligan

    Hooligan Member

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    GunDr

    Doug, Thank you for the very informative explanation. Mine are certainly the newer style as the centre pin does pass thru the body.

    Barry C Roach

    Does the new pin from Marcello come in two separate pieces or is the inner pressed into the outer.??
    Barry
     
  11. whiz white

    whiz white Strong Supporter of Trapshooting Banned

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    Doug: I believe the hoel wear issue is about using NEW style bottom barrel firing pins with with OLD sylte RH hammer. Without the recess the hammer strikes both the back and side of the firing pin, thus forcing the pin partially to the left IN the hole in the receiver.

    Using new firing pins with a hammer with the web is not a good idea, but the converse is fine.


    whizwhite_2008_020324.jpg
     
  12. Barry C. Roach

    Barry C. Roach Well-Known Member

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    Conjoined.
     
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