How hot does a barrel get?

[ARCHIVED THREAD] - How hot does a barrel get?

Posted: 11/11/2011 9:11:27 AM EDT

How hot is it if glowing red?

How hot after a realistic couple mag dump of 30 or 60 rounds?

ETA:

I'm trying to figure out what kind of temperatures something would have to withstand if it came in contact with a barrel during normal use.

Posted: 11/11/2011 9:12:16 AM EDT

[#1]

87 degrees

Posted: 11/11/2011 9:13:54 AM EDT

[#2]

Quoted:

87 degrees...

of awesome.

Posted: 11/11/2011 9:14:16 AM EDT

[#3]

Glowing red is about 1000° in daylight

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Posted: 11/11/2011 9:14:58 AM EDT

[#4]

Quoted:
How hot is it if glowing red?

How hot after a realistic couple mag dump of 30 or 60 rounds?

glowing read? about 1400-1600 deg.

Posted: 11/11/2011 9:16:01 AM EDT

[#5]

Anybody every measured the temp after 50 or 60 rounds or so?

Posted: 11/11/2011 9:16:31 AM EDT

[#6]

Grab it and let us know how many "motherfuckers" it is

Posted: 11/11/2011 9:16:38 AM EDT

[#7]

Hot enuf to burn the hell outa ya

Posted: 11/11/2011 9:17:19 AM EDT

[#8]

Quoted:

Quoted:
87 degrees...

of awesome.

87⁰ Awesome

Posted: 11/11/2011 9:17:35 AM EDT

[#9]

What's it take to get glowing red?

Will a Beta mag dump of 100 rounds do it?

Posted: 11/11/2011 9:18:38 AM EDT

[#10]

Quoted:
What's it take to get glowing red?

Will a Beta mag dump of 100 rounds do it?

About 87 rounds.

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Posted: 11/11/2011 9:19:12 AM EDT

[#11]

Quoted:
What's it take to get glowing red?

Will a Beta mag dump of 100 rounds do it?

no

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Posted: 11/11/2011 9:19:41 AM EDT

[#12]

Quoted:
1. How hot is it if glowing red?

2. How hot after a realistic couple mag dump of 30 or 60 rounds?

1. Red hot.
2. Not so hot.

Posted: 11/11/2011 9:20:34 AM EDT

[#13]

http://www.threeplanes.net/toolsteel.html
http://www.engineeringtoolbox.com/tempering-colors-steel-d_1530.html
http://www.blksmth.com/heat_colors.htm

Should get ya started

Posted: 11/11/2011 9:25:52 AM EDT

[#14]

I have done 6 back to back mag dumps on my 20" heavy and while it gets HOT it did not get red hot.

Posted: 11/11/2011 9:27:10 AM EDT

[#15]

I've seen .50 cal barrels that were so red they caught the grass on fire and you could see the rounds going through the barrel.

I wasn't about to hold a thermometer up to the metal.

Posted: 11/11/2011 9:32:52 AM EDT

[#16]

Quoted:
What's it take to get glowing red?

Will a Beta mag dump of 100 rounds do it?

No. Gas tube will melt before the barrel gets cherry.

Posted: 11/11/2011 9:33:24 AM EDT

[#17]

Quoted:
I have done 6 back to back mag dumps on my 20" heavy and while it gets HOT it did not get red hot.

Any guesses on a temp?

Posted: 11/11/2011 9:34:35 AM EDT

[#18]

Quoted:

Quoted:
87 degrees...

of awesome.

87⁰ Awesome

ths

Posted: 11/11/2011 9:36:50 AM EDT

[#19]

How hot after a realistic couple mag dump of 30 or 60 rounds?

Hot enough to cause 2nd degree burns... I did a 3-mag dump of my Mini-14 and immediately picked it up, letting it contact my forearm (Underneath the forearm). Got blisters from it.

Posted: 11/11/2011 9:36:53 AM EDT

[#20]

Quoted:

Quoted:

What's it take to get glowing red?

Will a Beta mag dump of 100 rounds do it?

No. Gas tube will melt before the barrel gets cherry.

Depends on the barrel. Lightweight or gov't profile barrels fail before the gas tube during repeated full auto mag dumps until failure.

Check out the Colt (DoD maybe?) video on YouTube. Barrel lasts about 450 rounds before it fails at the thin point (it's a gov't profile). The heavier profile M4A1 (SOCOM) profile barrel does fine up to around 900 rounds and then the gas tube fails.

ETA: Found the article: http://atwar.blogs.nytimes.com/2010/01/12/m4-and-m4a1-guns/

Posted: 11/11/2011 9:37:49 AM EDT

[#21]

I'm trying to figure out what kind of temperatures something would have to withstand if it came in contact with a barrel during normal use.

Posted: 11/11/2011 9:38:23 AM EDT

[#22]

Quoted:

Quoted:

I have done 6 back to back mag dumps on my 20" heavy and while it gets HOT it did not get red hot.

Any guesses on a temp?

Big MFing hurt if you touch it. other than that.

Posted: 11/11/2011 9:38:27 AM EDT

[#23]

Quoted:

Quoted:
How hot is it if glowing red?

How hot after a realistic couple mag dump of 30 or 60 rounds?

glowing read? about 1400-1600 deg.

Depends on the metal, but barrels probably don't vary much.

Posted: 11/11/2011 9:40:24 AM EDT

[#24]

Quoted:

Quoted:
What's it take to get glowing red?

Will a Beta mag dump of 100 rounds do it?

No. Gas tube will melt before the barrel gets cherry.

Depends on the barrel. Lightweight or gov't profile barrels fail before the gas tube during repeated full auto mag dumps until failure.

Check out the Colt (DoD maybe?) video on YouTube. Barrel lasts about 450 rounds before it fails at the thin point (it's a gov't profile). The heavier profile M4A1 (SOCOM) profile barrel does fine up to around 900 rounds and then the gas tube fails.

+1
There was a vid showing the handguards melt and catch fire first. RedJacket also had a show on this.

Posted: 11/11/2011 9:49:19 AM EDT

[#25]

http://www.everydaynodaysoff.com/2010/03/26/cooking-some-bacon-the-machine-gun-method/

Posted: 11/11/2011 10:02:10 AM EDT

[#26]

Quoted:

Quoted:
What's it take to get glowing red?

Will a Beta mag dump of 100 rounds do it?

No. Gas tube will melt before the barrel gets cherry.

Depends on the barrel. Lightweight or gov't profile barrels fail before the gas tube during repeated full auto mag dumps until failure.

Check out the Colt (DoD maybe?) video on YouTube. Barrel lasts about 450 rounds before it fails at the thin point (it's a gov't profile). The heavier profile M4A1 (SOCOM) profile barrel does fine up to around 900 rounds and then the gas tube fails.

Thats with 30rd mag dumps, not betas. With less mag changes (downtime) the heat builds much faster. The most I've seen an M16 with a non-piston gas system survive is 3-4 betas, dumped back to back, but I've seen more that failed before 3 were done. 30rd mag dumps will get you more rounds before failure than beta dums.