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Max Online: 16728 @ 03/25/12 08:51 AM
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#7196689 - 06/13/18 12:53 PM Re: Brass AR-10 Lower [Re: SnakeWrangler]
FiremanJG Online   content
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Registered: 12/16/08
Posts: 24883
Loc: Wolfe City, TX
Originally Posted By: SnakeWrangler
The spring taking most of the recoil compared to the revolvers frame taking the recoil..... confused2

Also, different alloy have different physical, mechanical, and metallurgical properties. Manufacturing processes also affect the physical and mechanical properties. Casing vs. forging vs. rolling vs. extruding etc. These properties can also be changed thru thermal processing (heat and cold).

Just because itís brass or aluminum is still could be either ductile (malleable) or brittle depending on the alloy and what processes it has undergone..... 2cents
I not a metallurgist or engineer but spent several years working with some really great ones.....used to work for ASM International- The Materials Information Society (formality the American Society for Metals)


Reckon if he he liquid quenched it, it might have become brittle? Looks to me like he just let it slowly air cool (air quench).
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#7196695 - 06/13/18 12:58 PM Re: Brass AR-10 Lower [Re: Mickey Moose]
SnakeWrangler Online   content
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Registered: 01/22/11
Posts: 35758
Loc: Over yonder.....
I agree. Extruded billet machined is also very different from cast and machined....be interesting to know the alloy too....
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#7196697 - 06/13/18 01:01 PM Re: Brass AR-10 Lower [Re: Mickey Moose]
SnakeWrangler Online   content
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Registered: 01/22/11
Posts: 35758
Loc: Over yonder.....
Man has serious skills!
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#7196722 - 06/13/18 01:32 PM Re: Brass AR-10 Lower [Re: FiremanJG]
Choctaw Offline
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Registered: 11/13/04
Posts: 6444
Loc: Grayson County
Originally Posted By: FiremanJG
Originally Posted By: Choctaw
Brass-framed blackpowder revolvers stretch under recoil so the loads must be kept light. Why would this lower be any different?


The fire and bolt are above it. Really all a lower does is hold buffer tube/stock, trigger group, magazine well, and two pins, each in a sandwich.(I know you know that) Have you seen polymer lowers? And some guys have made 3D printed lowers.

Looks to me like it doesn't have to be as strong as the upper and the barrel.


Yep, good points. The lower isn't going to have the stress that an upper would. Then again I'm not a gun builder or a metals guy so I'll shut up now. lol

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#7196747 - 06/13/18 02:06 PM Re: Brass AR-10 Lower [Re: Choctaw]
FiremanJG Online   content
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Registered: 12/16/08
Posts: 24883
Loc: Wolfe City, TX
Originally Posted By: Choctaw
Originally Posted By: FiremanJG
Originally Posted By: Choctaw
Brass-framed blackpowder revolvers stretch under recoil so the loads must be kept light. Why would this lower be any different?


The fire and bolt are above it. Really all a lower does is hold buffer tube/stock, trigger group, magazine well, and two pins, each in a sandwich.(I know you know that) Have you seen polymer lowers? And some guys have made 3D printed lowers.

Looks to me like it doesn't have to be as strong as the upper and the barrel.


Yep, good points. The lower isn't going to have the stress that an upper would. Then again I'm not a gun builder or a metals guy so I'll shut up now. lol


No, keep going!

Just an education, discussion brudda! cheers
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#7196752 - 06/13/18 02:10 PM Re: Brass AR-10 Lower [Re: FiremanJG]
SnakeWrangler Online   content
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Registered: 01/22/11
Posts: 35758
Loc: Over yonder.....
Originally Posted By: FiremanJG
Originally Posted By: Choctaw
Originally Posted By: FiremanJG
Originally Posted By: Choctaw
Brass-framed blackpowder revolvers stretch under recoil so the loads must be kept light. Why would this lower be any different?


The fire and bolt are above it. Really all a lower does is hold buffer tube/stock, trigger group, magazine well, and two pins, each in a sandwich.(I know you know that) Have you seen polymer lowers? And some guys have made 3D printed lowers.

Looks to me like it doesn't have to be as strong as the upper and the barrel.


Yep, good points. The lower isn't going to have the stress that an upper would. Then again I'm not a gun builder or a metals guy so I'll shut up now. lol


No, keep going!

Just an education, discussion brudda! cheers
cheers
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#7196753 - 06/13/18 02:10 PM Re: Brass AR-10 Lower [Re: Mickey Moose]
spankyttx Offline
Woodsman

Registered: 03/05/17
Posts: 159
felt recoil comes before buffer tube spring action, i see no reduction in recoil from the buffer spring and seems would be a slight increase or prolonged till the felt forward action of the bolt slamming forward into lock
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#7196769 - 06/13/18 02:32 PM Re: Brass AR-10 Lower [Re: Mickey Moose]
ChadTRG42 Offline
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Registered: 09/16/09
Posts: 12877
Loc: Lewisville, TX
So you metal guys, tell me about this brass holding up in an AR-10 platform.
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#7196789 - 06/13/18 02:59 PM Re: Brass AR-10 Lower [Re: ChadTRG42]
spankyttx Offline
Woodsman

Registered: 03/05/17
Posts: 159
Originally Posted By: ChadTRG42
So you metal guys, tell me about this brass holding up in an AR-10 platform.


to me, it goes without saying, a 10 would be harder on a brass lower and more likely to show wear and tear (stretch as choctaw says) than a 15 would
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#7196791 - 06/13/18 02:59 PM Re: Brass AR-10 Lower [Re: Mickey Moose]
trigger time Offline


Registered: 08/05/09
Posts: 163
I just wish I had that much free time on my hands. Pretty dang cool regardless.

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#7196803 - 06/13/18 03:12 PM Re: Brass AR-10 Lower [Re: spankyttx]
FiremanJG Online   content
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Registered: 12/16/08
Posts: 24883
Loc: Wolfe City, TX
Originally Posted By: spankyttx
Originally Posted By: ChadTRG42
So you metal guys, tell me about this brass holding up in an AR-10 platform.


to me, it goes without saying, a 10 would be harder on a brass lower and more likely to show wear and tear (stretch as choctaw says) than a 15 would


Once again, I'd like for him to report back after 1000 rounds. Maybe it stretches, holes open up, maybe not. Round count will tell.
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#7196819 - 06/13/18 03:29 PM Re: Brass AR-10 Lower [Re: Mickey Moose]
ChadTRG42 Offline
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Registered: 09/16/09
Posts: 12877
Loc: Lewisville, TX
After watching the video, he has made a firearm and there is no serial number on it.
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#7196822 - 06/13/18 03:35 PM Re: Brass AR-10 Lower [Re: Mickey Moose]
spankyttx Offline
Woodsman

Registered: 03/05/17
Posts: 159
ghost guns are legal to make and own, just can't sell them without being licensed


Edited by spankyttx (06/13/18 03:36 PM)
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#7196823 - 06/13/18 03:35 PM Re: Brass AR-10 Lower [Re: ChadTRG42]
FiremanJG Online   content
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Registered: 12/16/08
Posts: 24883
Loc: Wolfe City, TX
Originally Posted By: ChadTRG42
After watching the video, he has made a firearm and there is no serial number on it.


Is that not legal for a person to build a firearm for their own use? Still have to invent a serial number?
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#7196858 - 06/13/18 04:18 PM Re: Brass AR-10 Lower [Re: trigger time]
SnakeWrangler Online   content
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Registered: 01/22/11
Posts: 35758
Loc: Over yonder.....
Originally Posted By: trigger time
I just wish I had that much free time on my hands. Pretty dang cool regardless.

Iíd like to know how many hours he has in it
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