Rossi M92 357 Case Bulge - Page 2
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Thread: Rossi M92 357 Case Bulge

  1. #11
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    I sure think it's the chamber, maybe the case isn't fully supported or the case is blowing back during the ignition, something like that.
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  2. #12
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    Quote Originally Posted by sknhgy View Post
    One of those cases has case head separation. How many times have they been reloaded? The bulging doesn't look out of the ordinary to me, but something caused that case head to split.


    Just a comment. I have an H&R Handi Rifle, 357 with a tight bore. It measures .355. Any factory 357 will pierce the primer. I only shoot handloads out of it. I bought it when I was young and dumb so it's too late to send it back.
    They are once fired to my knowledge and were in visually good shape when I loaded them. I don't historically shoot 357 much at all and seriously doubt that I have processed those cases twice. The real story will be when I get some factory rounds, both 38 Special and 357 down the pipe and examine the resultant cases.
    “…democratic socialism, the great utopia of the last few generations, is not only unachievable but that to strive for it produces something utterly different – the very destruction of freedom itself. As has been aptly said: ‘What has always made the state a hell on earth has been precisely that man has tried to make it his heaven.'” F.A. Hayek

  3. #13
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    Looks like an awfully large relief cut for the extractor claw as my guess. Ever get a face full of hot gas? If not, the experience may be in your future.
    "Anything that can happen with a gun probably will happen, sooner or later." _John M. Browning

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  5. #14
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    Quote Originally Posted by Lomax View Post
    Looks like an awfully large relief cut for the extractor claw as my guess. Ever get a face full of hot gas? If not, the experience may be in your future.
    Hoping like hell that your suspicion goes unfulfilled.
    “…democratic socialism, the great utopia of the last few generations, is not only unachievable but that to strive for it produces something utterly different – the very destruction of freedom itself. As has been aptly said: ‘What has always made the state a hell on earth has been precisely that man has tried to make it his heaven.'” F.A. Hayek

  6. #15
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    The pic of a round in the chamber, looks a little odd,,maybe not. But it seems the shoulder is sticking out too far. Since the bulge is appearing close to the shoulder, I might surmise that is a short chamber. But since you are seeing some bulges in 38 as well, this could be a factory chamber spec issue. Geez I am no help..Lets see how the new ammo works.
    Czechbikr likes this.
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  7. #16
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    [QUOTE=Czechbikr;5553469]I was mistaken, it seems that the 38 Special also exhibits a bulge at the base, approaching a tear or burst. I plunked a 357 round and it seats fully and falls free from the bore. In looking at the chamber mouth, it seems that they machined a ramp into the chamber to facilitate feeding perhaps?

    That is weird, and something isn't right.
    I have had a M92 since 2000 and absolutely no problems other than the screw coming loose that holds the magazine tube to the barrel.

  8. #17
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    Quote Originally Posted by Czechbikr View Post
    Hoping like hell that your suspicion goes unfulfilled.
    The shiniest cartridge in your first pic looks like it has the beginnings of a case separation taking place. Expelled gases from headcase separation could leak out from the bolt's extractor channel.
    "Anything that can happen with a gun probably will happen, sooner or later." _John M. Browning

  9. #18
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    Quote Originally Posted by Lomax View Post
    The shiniest cartridge in your first pic looks like it has the beginnings of a case separation taking place. Expelled gases from headcase separation could leak out from the bolt's extractor channel.
    I looked into the case expecting to see daylight through there but didn't. The others (top and bottom brass colored one) look like the brass flowed in that area. The nickel plated cases held together better with a more uniform bulge.
    “…democratic socialism, the great utopia of the last few generations, is not only unachievable but that to strive for it produces something utterly different – the very destruction of freedom itself. As has been aptly said: ‘What has always made the state a hell on earth has been precisely that man has tried to make it his heaven.'” F.A. Hayek

  10. #19
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    Here's my chamber, it's a bit different
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  11. #20
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    Looks like mine has a bit more support. I wonder what happened. My 92 is 7 or 8 years old.
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    "They who can give up essential liberty to obtain a little temporary safety, deserve neither liberty nor safety." -Ben Frankin-

 

 
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