Was just reading HODGDON's 2007 RELOADING an annual reloading magazine. there was a bit called "NOTES On The .223 rem and .22-250."
He lists some very accurate bullet and powder combinations for these cartridges and I scanned a pic of 4 of the rifles he uses for Target and varmint shooting with is top acurate loads. You may notice that one of the rifles is an AR variant. That is a "black assalt rifle" that has been modified with the replacement of barrel and trigger and a few things and is now a very accurate rifle for target and varmint shooting. These kinds of guns are not owned and used because they are "fun to shoot in rapid fire" or because the owner/shooter is pretending to be a souldier or a terrorist. They are "accurate, target and varmint rifles".
In the company of some fine shooting bold action guns. Lets hope the government doesn't do something stupid like banning these fine semi-auto rifles.
Robin in Rocky