Just took a new one out Saturday to see what it would do.
Shooting Fed. XM193, 55gr,
<1" at 25yds
Let my daughters do some "rock'n roll" with a few mags, then tried it at 100yds.
Probably a 5" group.
(This was with open sights. I like a carbine to be clean looking.)
I tried it at 25yds again, smaller group, all holes touching, but it was about 3" lower than the cold group.
I intend to get the barrel cut to 16.5".
That should stop the vertical stringing that occurs when it heats up.
If you want to get the same result, for about $20, you can add a muzzle break.
I also plan to bed the stock myself, or have it pin bedded.
That should shrink the groups.
On my older gun, after I bedded the stock, I was shooting under 2" at 100yds with open sights.
With my eyes, that's great.
I hadn't cut the barrel or added a break yet either.
So, for ~$150 I can get the barrel cut, and get it pin bedded, and still have less invested than a AR.
Or, for less than $40, I could bed it myself, and add a muzzle break.
Either way, you get an accurate gun, that still has the "M1 Carbine" looks.
ARs are awesome guns,
I'm just a sucker for the looks of the Ruger.