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barrel diameters and muzzle brakes.

 
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  #29  
Old 05-17-2014, 02:53 PM
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Join Date: Mar 2010
Location: on the Southern Plains
Posts: 1,205
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  
Old 05-17-2014, 03:23 PM
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Join Date: Oct 2006
Posts: 486
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  
Old 05-17-2014, 06:11 PM
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Join Date: Mar 2012
Location: ND
Posts: 2,771
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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"The only advantage a light rifle has is weight, all other advantages go to the heavy rifle."
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Biggest fail of 2014 so far... http://www.longrangehunting.com/foru...ea-ftf-128972/

My guess on W3P .308 230 Grain Bullet: G1 .740-.755
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  #32  
Old 05-17-2014, 10:30 PM
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Join Date: Dec 2008
Location: Great Falls, MT
Posts: 4,962
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 @zzhole." - Maj Gen Burton Field.
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  #33  
Old 05-18-2014, 01:35 AM
Gold Member
 
Join Date: Mar 2014
Location: ohio
Posts: 928
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  
Old 05-18-2014, 08:43 AM
SPONSOR
 
Join Date: Mar 2010
Location: on the Southern Plains
Posts: 1,205
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. Not everything can be fixed on an internet forum!
Reply With Quote
  #35  
Old 05-18-2014, 10:06 AM
Silver Member
 
Join Date: Oct 2006
Posts: 486
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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