How hot does the barrel get?

[Oniak]

Does anyone have any idea what temperature the barrel reaches during rapid semi-auto fire, for example, during a carbine course. Thanks guys.

[goodoleboy]

Does anyone have any idea what temperature the barrel reaches during rapid semi-auto fire, for example, during a carbine course. Thanks guys.

Pretty dang hot (not to be a smart butt, either). I have no temperature reference, I just know that you don't want to touch the barrel without a glove on.

[Outlander Systems]

It definitely gets hotter than two rats f@#*'in in a wool sock.

It depends on a number of different factors.

1100°, and you need a new barrel...

;)

[Blowby]

I was shooting with a rail that was not covered and after about an hour we got into some rapid shooting. Daum... the rail was so hot I couldn't hold it. Had to dig out the covers and finished without any problems. I guarantee if you touched the barrel it would instantly scorch your skin. Not sure if the ladder type rail covers would've helped much.

[eternal24k]

hot enough to melt foam cases

[m4fun]

Dude - try full auto - not good - many a gas tube melted - honestly, one of the top reasons for a piston upper. Doh! Let the war begin - piston vs di, fa vs placed shots, etc.

[m4fun]

OK - so this is barrel, not action/gas tube - still gets hot - no need to debate piston upper.

[Thomas M-4]

It can run so hot the barrel droops :eek:
http://atwar.blogs.nytimes.com/2010/01/12/m4-and-m4a1-guns/?hp

[citizensoldier16]

hot enough to melt foam cases

Also hot enough to boil water and burn off oil. I've even seen them catch on fire on a few FA drills.

[CGSteve]

I can't imagine how hot the barrel actually is temperature wise when the ejected brass is hot enough to scorch and peel skin on contact.

[Belmont31R]

I can't imagine how hot the barrel actually is temperature wise when the ejected brass is hot enough to scorch and peel skin on contact.






Almost nothing funnier than seeing someone on the line dancing around with a piece of hot brass on their neck...:cool:

[ChicagoTex]

Almost nothing funnier than seeing someone on the line dancing around with a piece of hot brass on their neck...

That is... until it happens to you :eek:;):D

[lindertw]

Oniak,

A while back I experimented with a barrel light mount and recorded temps with an IR thermometer at diff locations, temp test (http://m4carbine.net/showpost.php?p=190593&postcount=9). The barrel reached 200-300+ deg F, and the handguards reached 100-120+ deg F (firing 300 rounds in 45 mins). This may/may not help...

[ThirdWatcher]

Almost nothing funnier than seeing someone on the line dancing around with a piece of hot brass on their neck

The Lefties used to do this when shooting the M16A1... damn, I felt bad for them. I remember firing a 20 round mag on full auto (at the range) at night and the barrel glowed orange (and melted the sandbag it was touching).

[markm]

Oniak,

A while back I experimented with a barrel light mount and recorded temps with an IR thermometer at diff locations, temp test (http://m4carbine.net/showpost.php?p=190593&postcount=9). The barrel reached 200-300+ deg F, and the handguards reached 100-120+ deg F (firing 300 rounds in 45 mins). This may/may not help...

I think that was more what the guy was looking for. It really depends on the specific class.

I won't take classes that are based on volume of rounds sprayed. It's silly nonsense, a waste of ammo, and not realistic for civilian defensive rifle deployment.

[jhs1969]

Small Arms Review did an article in July 06 concerning Socom's complaints of barrel failures;


The first major investigation found the issue regarding blown barrels was clearly due to excessive operation beyond what the carbine was designed........

The barrels would reach their transformation temperature that is between 1,100 and 1,375 degrees. At these temperatures the barrel becomes soft and loses its heat-treating. Structrual failure is just a matter of time. According to Rock Island's testing, to get the barrel to this temperature you would have to fire 540 to 596 rounds within 3 to 3 1/2 minutes.

I don't know if this is what you are looking for.

[Belmont31R]

That is... until it happens to you :eek:;):D





I've gotten zapped a couple times.....;)

[bkb0000]

can get above 451 degrees in three magazines or less... we used to light cigarettes off 'em.