As a noob, I bought an Alpha upper that came with a heavy, 18" barrel. That thing went smooth bore after less than 4K rounds. Can you beat that? 
With an average firing schedule almost all 416r barrels will shoot out around the 5k mark, and if used as an impromptu SAW they shoot out much earlier.
About 2k on a Colt M4A1… In about 10 minutes. Rifling was still good. Barrel was warped.
Destructive testing?
That’s not even fair.
Please…tell me more.
Four rounds…
Not mine. But was my cousins gun. He was new to the ar platform and new to reloading. Not a good combination.
We were at the gun range and he just unboxed his new gun (S&W M&P 15)… He fired off the first two rounds, then the third one went pop and didn’t cycle. Before I could say anything he cycled the charging handle and pulled the trigger, shooting the fourth round. Kaboom. The third one was a squid round that was stuck in the barrel. Fourth one finished it off.
He was pissed to say the least. No injuries.
^
This wins / thread.
LOL! True.
The yellow username should give you a clue.
Been on here for a few years and I still am not sure what the yellow username means.
A user with a yellow username is a Subject Matter Expert. Someone with vetted, real life credentials, often serious .mil experience. DocSherm has BTDT.
There are some notable exceptions to this. I can think of several users on here that have some big time .mil credentials, often with experience in special forces units and other SMUs. The GWOT has gone on for over 15 years. A generation at war. There’s more than a few gentle sirs on this forum that have a lot of experience to back up their opinions. That is, of course, if the low general IQ and consistently arrogant / know-it-all nature of The Internet doesn’t drive them away.
I wish there was a like button. There is no truer statement.
Is the amount of barrel wear the same regardless if one fires 1000 rounds in two months or the same amount of rounds over two years?
Those ratios aren’t really stressing the barrel. Now say, 1000 rounds in a day, routinely, would wear the barrel faster as the constant heat stresses the barrel more. (my technical terms may be off but he general principle should be correct.)
We had over 60 loaded 30 round mags and were testing to show that a M4A1 was not acquitted for heavy suppression fire. That was before we got the MK 46.
Not going to lie… It was fun.
Sadly, this seems to be very much the truth.