I participate in informal AR "internet" matches on another site.
The rules are pretty loose and there are several divisions: 50yd, 100yd, 200yd with iron and optics. Basically, we shoot a group, then scan the target into the computer and post up. It is an attempt to get people interested in competitive shooting. The best guy is doing .3's 5 shot group at 100 yards, and high .3's at 200.
"Mike in CO" gave me great info that helped me shrink my groups from .64in to .50 in at 100 yards. AA 2330 has been fantastic for all bullets 36gr to 75gr in .223. Another recommendation Mike told me about is a loading block so you can stuff bullets into the rifling. Original Bob Sled works great. It is made of Del-rin. They make a model for NRA high power, and one that fits flush. I use the one that fits flush.
The front stock plate Mike is mentioning would be essential to getting really tight groups. You can find pictures on 6mmbr site under .223 section. The front tube on my varmint AR is round and wobbles on a pedestal rest. I am still hunting for someone to make me one. My tool and die uncle retired, and he was the only one I know could do it. I am stuffing a towel in between my rest and the rifle to hold it in place.
Larry Medler:
http://home.comcast.net/~larrymedler/asset.htm
A Stag 7 in 6.8 SPC made a "oh" or "teen" 3-shot group with SSA 110gr Accubond.
The Tubb 2000 is a bolt action based on AR. It is a very accurate rifle. His 6mm XC looks awesome.
Trigger, scope, barrel and loads are necessary to stay consistently .25 MOA or better. From reading the results on this site and others, this is where you have to be to win.
There are several barrel companies that make top notch barrels for AR. Shilen, Krieger, Hart to name a few.
Trigger - Good luck here. Geiselle and Jewell are 2 top names in AR triggers, but they are 2 stage. You will be competing with rifles that have 2oz single stage triggers. Timney and Chip McCormick made single stage, but the Timney is 3lb pull. I am playing with springs on a stock trigger, but eyeing the Jewell.
Scopes - scopes are the same. March, Nightforce, Leupold on the high end. Sightron and Burris make 8-32x scopes are around $800. Weaver 36x is about $400. I like really tall rings and the scope set back quite a bit. I shoot from behind the rifle with my arms crossed and I am squeezing the rear bag (Protektor) for elevation adjustment.
Rear stock - stuff lead in the A2 or get a JP Rifles wood one (not sure if they sell it or it is display only) or Magpul PRS (looks like it would slide in rear bag well).
Grip - I use the Magpul MIAD grip, which is a "tacticool", but it allows me a comfy, light hold in a good position.
I use the Badger Ordnance tactical latch. It works great under a scope. I got a pretty good rhythm with it, the Bob Sled, and a brass catcher I have strapped to the front stock. Some guys are using a bolt handle now.
Bolt assemblies: je ne sais pas. There are lots, some are chromed or Ti coated. Not sure if it matters for accuracy.
Remove the sling hardware.
