If you read this, they say the MR1 beats out an AR in accuracy and superior trigger, shooting a sub MOA right out of the box.
After reading that article two items come to mind, one: they never mention the type of AR rifle they are comparing the MR1 to and two: the MR1 shoots MOA right out of the box with a 10 to 15 MPH crosswind and with neither of the shooters ever having had any previous experience with this rifle system at all. Talk about an awesome rifle with very exceptional (or lucky) shooters, I mean this was done with either open sights or a rifle w/o it's scope being zeroed first from the way they claim it all went down. If MR1's worked that well right out of the box they would have an incredible reputation (which they do not) and be way more popular then they are. You notice they do not mention anything more then the MR1 beats out an AR that from one of the readers own words has parts which wiggle that shouldn't (and that's the way all the AR's the one reader has ever shot; sounds like pretty cheap AR('s) to me) and they never mention any other groups but the best. So these guys never get fliers on a rifle they've never used with a crosswind and poor ergonomics (as noted by poor eye to scope relief).
As someone who has wrote articles for national magazines (not firearms, but automotive) I can tell you there is serious pressure to portray the product in the best light possible and if that means talking about the good parts only and ignoring the bad parts then that is what is generally done. It's not lying if you only mention what's good and ignore what is wrong or poor with the product. This is a common accepted way of doing things, it's simple what sells products even ones that are not that great.
You really can't trust magazines a whole lot when it comes to the quality of their remarks when discussing positive attributes of a product they are trying to push (which is basically all products), especially if they sound to good to be true. You'll notice they never said that they were able to duplicate that first MOA group made with the MR1. They did not offer a name for the AR nor do you see it scoped; (did they even scope it at all, this article leaves out many important details all in favour of making the MR1 shine) they only mention that it got it's ass whooped by the MR1, why because they would never want to upset another company which could be a possible revenue/future customer to them.
Okay I'm rambling again. back to a decent NR semi., we need more info. like what price range, preferred calibre and what it will be used for in order to make a good recommendation.
However like other's have said previously to a question that pop's up here week after week some of the more accurate and popular (or not so popular) NR semi's are in no particular order:
# HK SL8 in .223 price approx. $2,500 new, expect 1MOA (at best) when zeroed-in with a high magnification scope and match grade ammo.
# FNAR in .308 price approx. $2,500 new, expect 1.5MOA (maybe better) when zeroed-in with a high magnification scope and match grade ammo.
# Armalite AR180B in .223 price approx. $1,500 used, expect 2MOA when zeroed-in with 4x scope and quality ammo. tested for optimal performance
# RA XCR-L in .223 (also available in 7.62x39/7.62x51) price approx. $2,500 new, expect 3MOA (+/- 1MOA possibly) with 4x scope and decent ammo.
# Ruger Mini 14/30 in .223/7.62x39 respectively price approx. $1,000 new, expect 5MOA (+/- 2MOA possibly) with 4x scope and decent ammo.
There are many others, but this is a list of a few of the more popular choices that will offer good resale if you find you're not happy and need to sell. Please understand this list was just a quick gathering of info. w/o any research to current prices or w/o being an expert on any particular rifle system mentioned, just a regular gun guy's thoughts on the subject (so please do not get upset if you've managed to modify your Ruger Mini to shot better then 3MOA or were able to find that one special XCR that is capable of 1MOA).
Also note that ammo. can/will have a significant outcome on accuracy so if anything accept very high quality ammo. is used, you could expect to add 2+MOA (or more) to these stat's.
Regarding scope magnification (while being far from an expert) I would think a 16+x quality optic (price $1,000+ preferred, but less expensive options are available in the $500 to $999 range) would be what's needed to insure the easiest path to insuring the smallest groups and is what I consider high magnification with respect to this list.
Finally all these rifles groupings would/should be shot from a bench with proper shootings bags/rest (not a cheap bi-pod) used and ideally with no crosswind...
Hope this helps a little Hoochie and keep shooting/troubleshooting the MR1, I'm sure it's more capable then what it's done so far as they are a decent rifle. Unfortunately your hopes were set unrealistically higher by a less then realistic and forthcoming article on what is really the expectations of a decent, but not super accurate semi-auto. rifle. All sorted out and zeroed-in you should be happy with a good, reliable and 2MOA accurate quality rifle when using decent ammo. and optics.
Cheers D