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barrel diameters and muzzle brakes.

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  #29  
Unread 05-17-2014, 02:53 PM
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Location: on the Southern Plains
Posts: 1,911
Re: barrel diameters and muzzle brakes.

Your "data" and calculations might look good on paper, but 20+ years as a working gunsmith tell me otherwise. An antiquated design. Originally used for much lower pressured shotgun chamberings. Now, because of more modern steels used in their construction, chambered in rifle cartridges. I see at least two every year, at times as many as 5 that will not open and require disassembly to get open. Sure, headspace gauges OK, but so what if the action locks up. I've seen this more often, latley, with the more 'modern loadings' offered by the commercial ammo manufactures (Hornaday, Remington, Winchester, etc.) I wouldn't buy one as kids first gun, let alone defend how "good' they are. They'd make good tomatoe stake! Not accurate enough for long range (remember, this is Long Range Hunting) and a weak design, at that. Unsafe? Probably not. But a poor excuse for a "rifle".
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  •   #30  
    Unread 05-17-2014, 03:23 PM
    Gold Member
     
    Join Date: Oct 2006
    Posts: 645
    Re: barrel diameters and muzzle brakes.

    Quote:
    Originally Posted by shortgrass View Post
    Your "data" and calculations might look good on paper, but 20+ years as a working gunsmith tell me otherwise. An antiquated design. Originally used for much lower pressured shotgun chamberings. Now, because of more modern steels used in their construction, chambered in rifle cartridges. I see at least two every year, at times as many as 5 that will not open and require disassembly to get open. Sure, headspace gauges OK, but so what if the action locks up. I've seen this more often, latley, with the more 'modern loadings' offered by the commercial ammo manufactures (Hornaday, Remington, Winchester, etc.) I wouldn't buy one as kids first gun, let alone defend how "good' they are. They'd make good tomatoe stake! Not accurate enough for long range (remember, this is Long Range Hunting) and a weak design, at that. Unsafe? Probably not. But a poor excuse for a "rifle".
    I have been designing things my whole life, but only charged the big bucks for over stressing my designs in missiles, cell phone towers, jet fighters, attack helicopters, and defibrillators. Go carts, mini bikes, and guns are on my own nickel.

    The handgun cartridges I have overloaded in work ups just to see what happens:
    25acp
    32acp
    32 S&W
    32 S&W Long
    32-20
    7.62x25mm
    30 Mauser
    380 [9x17]
    9mm [9x19]
    9x23mm
    257 Sig
    38 S&W
    38 Special
    357 mag
    40 S&W
    10mm
    10.4mm
    18) 45acp

    The rifle cartridges I have overloaded to see what happens:
    19 Badger
    223
    243
    6mmBR
    25-20
    25-35
    257RAI
    257RAIR
    260
    270
    7mmRM
    30-30
    308
    30-06
    7.62x39
    7.62x54R
    8v57
    45 Colt
    45acp
    20) 410

    Some things I have have noticed about trying to blow up guns:
    Assume all information in a load book is wrong.
    Ackley and De Haas knew what they were talking about.
    Nothing blows up as calculated, because of the difference between static and dynamic loads.

    That is if I calculated a muzzle must be .006" thick for 20kpsi, you will never get it to blow up with a 20kpsi gunshot.

    It happens too fast. Things need more time to break at the predicted threshold of yield.
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      #31  
    Unread 05-17-2014, 06:11 PM
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    Location: ND
    Posts: 2,801
    Re: barrel diameters and muzzle brakes.

    How i see Clark

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    "Firearms are second only to the Constitution in importance; they are the peoples' liberty's teeth."
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    Biggest fail of 2014 so far... http://www.longrangehunting.com/foru...ea-ftf-128972/

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      #32  
    Unread 05-17-2014, 10:30 PM
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    Join Date: Dec 2008
    Location: Great Falls, MT
    Posts: 9,277
    Re: barrel diameters and muzzle brakes.

    Quote:
    Originally Posted by Clark View Post
    I have been designing things my whole life, but only charged the big bucks for over stressing my designs in missiles, cell phone towers, jet fighters, attack helicopters, and defibrillators. Go carts, mini bikes, and guns are on my own nickel.

    The handgun cartridges I have overloaded in work ups just to see what happens:
    25acp
    32acp
    32 S&W
    32 S&W Long
    32-20
    7.62x25mm
    30 Mauser
    380 [9x17]
    9mm [9x19]
    9x23mm
    257 Sig
    38 S&W
    38 Special
    357 mag
    40 S&W
    10mm
    10.4mm
    18) 45acp

    The rifle cartridges I have overloaded to see what happens:
    19 Badger
    223
    243
    6mmBR
    25-20
    25-35
    257RAI
    257RAIR
    260
    270
    7mmRM
    30-30
    308
    30-06
    7.62x39
    7.62x54R
    8v57
    45 Colt
    45acp
    20) 410

    Some things I have have noticed about trying to blow up guns:
    Assume all information in a load book is wrong.
    Ackley and De Haas knew what they were talking about.
    Nothing blows up as calculated, because of the difference between static and dynamic loads.

    That is if I calculated a muzzle must be .006" thick for 20kpsi, you will never get it to blow up with a 20kpsi gunshot.

    It happens too fast. Things need more time to break at the predicted threshold of yield.
    Murphy does not discriminate!
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    "Leadership Rule #2: Don't be an ***hole." - Maj Gen Burton Field.
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      #33  
    Unread 05-18-2014, 01:35 AM
    Platinum Member
     
    Join Date: Mar 2014
    Location: Ohio
    Posts: 2,300
    Re: barrel diameters and muzzle brakes.

    Quote:
    Originally Posted by J E Custom View Post
    I promise, this will be the last post on this subject from me.

    It is going no where and lost it's purpose. Use the chart or don't.

    I will continue using the chart and will not infringe on the minimum barrel wall thickness.
    Even though I added .010 to the minimum, that's not very conservative In my opinion and does not prevent any installations that fall within the recommended thickness.

    J E CUSTOM
    thanks for sharing your knowledge JE it is very helpful to me as matter of fact I read every post that you put on this site even if it doesn't pertain to any of my intrest I trust you won't steer anybody into anything dangerous. Keep up the good work

    thanks, Bill Gohring
    __________________
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    Guns have only two enemies, rust and politicians

    Know Guns,know peace,know safety.no guns,no peace,no safety...

    The second amendment is in place incase the politicians ignore the others


    Free men do not ask permission to bear arms.

    For those who trade liberty for security have neither Benjamin Franklin...
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      #34  
    Unread 05-18-2014, 08:43 AM
    SPONSOR
     
    Join Date: Mar 2010
    Location: on the Southern Plains
    Posts: 1,911
    Re: barrel diameters and muzzle brakes.

    Quote:
    Originally Posted by Clark View Post
    I have been designing things my whole life, but only charged the big bucks for over stressing my designs in missiles, cell phone towers, jet fighters, attack helicopters, and defibrillators. Go carts, mini bikes, and guns are on my own nickel.

    The handgun cartridges I have overloaded in work ups just to see what happens:
    25acp
    32acp
    32 S&W
    32 S&W Long
    32-20
    7.62x25mm
    30 Mauser
    380 [9x17]
    9mm [9x19]
    9x23mm
    257 Sig
    38 S&W
    38 Special
    357 mag
    40 S&W
    10mm
    10.4mm
    18) 45acp

    The rifle cartridges I have overloaded to see what happens:
    19 Badger
    223
    243
    6mmBR
    25-20
    25-35
    257RAI
    257RAIR
    260
    270
    7mmRM
    30-30
    308
    30-06
    7.62x39
    7.62x54R
    8v57
    45 Colt
    45acp
    20) 410

    Some things I have have noticed about trying to blow up guns:
    Assume all information in a load book is wrong.
    Ackley and De Haas knew what they were talking about.
    Nothing blows up as calculated, because of the difference between static and dynamic loads.

    That is if I calculated a muzzle must be .006" thick for 20kpsi, you will never get it to blow up with a 20kpsi gunshot.

    It happens too fast. Things need more time to break at the predicted threshold of yield.
    Does anyone else sense a TROLL in the area?
    __________________
    "Shoots real good!": definition; it didn't blow-up in my face. 1993 graduate Montgomery Community College 2yr. gunsmithing program
    Reply With Quote
      #35  
    Unread 05-18-2014, 10:06 AM
    Gold Member
     
    Join Date: Oct 2006
    Posts: 645
    Re: barrel diameters and muzzle brakes.

    Quote:
    Originally Posted by shortgrass View Post
    Does anyone else sense a TROLL in the area?
    If you want to display bravado, I understand, but if you presence here is to sell custom gunsmithing, I would suggest to you that many high end consumers are smart enough to understand my posts.
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