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7/29/2010 1:36:08 PM EDT
What should be expected in regards to barrel heating. I'm shooting a 16.5 CAR and it seems that the barrel it way to hot for the amount of shooting, less than 400 rounds in about 3 hours of range time. I  didn't notice this issue when shooting my 20 barrel. All this has been in semi mode. No full auto.
7/29/2010 2:25:17 PM EDT
[#1]
normal
7/29/2010 2:36:45 PM EDT
[#2]
Normal to the point where it's hard to handle the handguard even with it having double heat shields/plates?
7/29/2010 2:53:33 PM EDT
[#3]
400 hundred rounds?!? Inside a couple hours?!? = one hot barrel. Any rapid fire or sustained fire sequences would have no time to cool. Meaning each round fired after that would maintain and retain the heat.

Look at this way, you burned a pound and a half of powder through your barrel. Now you know why it's hot.
7/29/2010 3:08:06 PM EDT
[#4]
You were pretty much at the maximum rate of sustained fire for the M16. You would expect a hot barrel - not red hot, just too hot to grab.
7/29/2010 3:10:49 PM EDT
[#5]





I fired 80 rounds through my 16" carbine in an hour last weekend .  That handguard got HOT!
 
7/29/2010 3:33:20 PM EDT
[#6]
I tend to put a few rounds down range each time I go too, generally an average of 100 rounds per hour, sometimes more.  Barrel never gets cool enough to avoid pain if you grab it, at least in the summer time.  Cools a little faster in the winter.  The only way to keep these guns cool in the summer heat is to shoot a lot slower, but unless I'm trying for precision groups, that's not as much fun as quickly busting clay pigeons at 50 - 100 yards.  I think a good free float forend cools a little better than the double heat shield car handguards, since you have a larger, secondary heat sink, however it has no contact with the barrel, so this might just be a bullshit perception on my part.  
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