Average Barrel Temp.?

[MagicPie]

Would anybody have an idea as to what temp an ar-15 non-fluked barrel 16" would get, say in semi-auto I shot 15-20 as fast as possible?

I would test this my self with my IR temp reader but my barrel is not installed as am working on several things and sadly i have only one ar-15

[One Ragged Hole]

A guy I know bump-shoots his Colt 7.63x39, and all I can say is the barrel gets so hot it smokes. I would not try it myself, just because it looks kinda dumb. So to answer your question, I can't really give you a temp, but if it smokes it must be pretty hot.
O-R-H

[WalterGA]

If you'll indulge me, I'm curious as to why the temp. matters? What will you do differently, if you get an answer that's 50*, one way or the other?

I don't bump-fire, as I consider that to be truly pubescent, but I do fire rapidly at times..sometimes as many as thirty shots. My barrel gets pretty hot, but I've never noticed it smoking, nor have I noticed any ill effects. I've also shot my AR f.a. at times, with the result being a pretty hot barrel...again, no problems that I can see.

I use a DPMS non-vented free-float tube. I've never had the tube get so hot that I couldn't "grab" it.