Rifle length question 24 v 20?

[Papa]

Please let me know your thoughts on accuracy going from 24 to 20 inches.  Also your thoughts on fluted barrels.  Anyone look at the "honeycombed" http://forceproduction.com/page26/index.html  fluting?  Spiral or straight?  I currently have a 24 inch bull barrel.  I need to lighten the load a bit.  Thank you in advance...

[jeffreyC]

Shorter barrels are stiffer for the same thickness, so accuracy usually improves.

With iron sights on an AR the sight radius will be the same.

A fluted barrel is stiffer than an unfluted barrel of the same weight, not the same diameter.

[Robocop1051]

You'd be surprised at the accuracy difference between a fluted bull 20" vs a standard bull 24".

Unless you are going to spend a lot of time at 1000 yards, the extra 4" are a waste.

Spiral flutes, golf ball dimpling, and honeycomb are all gimmicks. Stick to the standard flutes. They are significantly less expensive and proven technology. With a decent barrel maker, you should be shooting sub MOA all day.

[Papa]

Thank you.  I appreciate the info.  I dropped it off to be cut, but not fluted.