AR accuracy declining

[BDA.45]

So....my AR has seriously about 100,000rds+ through it. (Tried to put it up for sale a few years ago for roughly $1,000,000 when all hell broke loose. Mods took my ad down....still can't imagine why....) It's always been shot suppressed. Last weekend we went out and shot at 700-900yds and we were consistently hitting my steel plate. Shot 1200yds (AT LEAST) and got a 10x10 foot group. I'm not suprised at all. What does suprise me is when I shot a 100yd group I couldn't even hit a 3x5 card. Barrel was warm but can was HOT. Checked for baffle strikes and there were none. My guess is the barrel is toast. It's never been shot full auto but the can is rated for it. I'm guessing it's time for a new barrel....When we shot it cold everything was fine but quickly changed once things heated up. Is there any compensation for that? I know it's been shot to $hit but can't seem to part with it....

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[BDA.45]

Here's my plate just for fun.....strikes at that distance don't even make a mark except for a splash...

 

[slimmer13]

Sounds like you got your money's worth. Swap out the barrel and hang it in a place of honor.

 

[P7M13]

Swap the barrel and put the old one for sale in the Parts and Accessories section for $1K, or 1¢ for each round fired.

 

[BDA.45]

Swap the barrel and put the old one for sale in the Parts and Accessories section for $1K, or 1¢ for each round fired.

I like that idea....come December or January I just might have to take you up on that

 

[Member 5605]

Harmonics. All about harmonics. Warm barrel, loose rifling, can at the end... I bet it was dancing like a hula girl.

 

[clearconscience]

That's why I have several ARs. When one heats up, pick up another one!

That and it pizzes off the libtards.

Get a quick change kit for the AR with a 2nd barrel.
If you've cleaned it a lot ( I assume with that many rounds) the rifling may also be worn out.

 

[USMC-03]

First and foremost use a good copper solvent and thoroughly clean the barrel. Fouling is the most common reason for accuracy loss and the easiest to correct. If that doesn't work then check for throat erosion.