I would like another AR15 for longer range shooting. I am an accuracy nut.
Well I'm going to toss out the gun everyone loves to hate as a starting point - I'd use the RRA as a
baseline.
I'm a longtime AR owner - bought my first one over 30 years ago (Colt SP-1) and when the AWB expired, I was at the store with the RRA of my choice for the dealer to order.
Why? Got a relative that's a gunsmith, and he and all his buddies are competitive bench rest shooters (you know how off the deep end those folks are about accuracy). I asked him what he would get and they told me it seemed about every competition they went to, RRA seemed to be the prevailing choice. He now owns a number of AR's, and I notice he owns more RRA's than any brand, and when he's building a competition or varmint gun, he usually starts with a RRA.
Since that time (I now own two with no complaints - along with a couple of Colts), every time I'd run across a magazine or one of the increasingly sold special magazines (those covering a number of evil black rifles), I immediately flip through to check out the accuracy results on the test page - I can't remember a time when I've seen something that shot a smaller group than the RRA's tested, often with less than 1/2 the MOA of the others (even some costing 3 times the price).
When I bought my first RRA, I noticed they were out front and center with their accuracy guarantee - some of the others may have had an accuracy guarantee, but you often had to dig through the fine print to find it.
I'm just a' telling you my unscientific results / research over the years.
In the bench rest boyz world, "tight means accurate", and RRA's usually are tight. Some folks hate 'em for that (why I don't really know), but as long as they don't jam, I have no problem with tight fit.
Of course, the flames will now probably start, but if you'll recall in my first line of this post, I said you might want to use the RRA as a
baseline for your comparisons.
And unlike some, I won't even get upset if you don't buy the brand of my choice!