5 rounds is plenty to provide insight on a rifles accuracy. Anyone who discounts a 5 round group on the basis that it's not enough rounds is looking for an excuse to disregard the accuracy of said rifle.
I'm by no means a skilled shot, but I've fed mine several boxes of V-Max lately and I'm consistently getting pretty darn close to sub-moa with my XCR, a skilled shot with a good load would likely break that barrier quite easily. Certain people (further up, not you eatredmeat157) participating in this thread who denounce the accuracy of semi-auto's should spend more time getting familiar with their rifles than making claims online of what others are capable of. I don't think too many XCR owners are under the illusion they purchased a precision rifle, however that doesn't mean that they should not strive to achieve better than the naysayers will claim possible, when several people have already proved them to be blowing smoke.
I'm not trying to denounce semi auto's being capable of shooting sub moa, I have a few that will do it easily. I am saying that showing a target with 9 holes in it and 3 close together circled shows nothing. That would be like me taking my 12 gauge with #4 shot and shooting at paper 25 yards away then circling the 3 closest holes. What does that prove? Nothing.
I've owned or at least shot pretty much every semi auto 223 available to the Canadian public and at least 4 XCR's from gen 1 through to the last ones before the keymod and none of the XCR's were capable of less than 2 moa with any of the ammo we used.
I did watch my buddy shoot 4-6 moa mag after mag with Norinco garbage drop his groups down to 3-4 moa after I gave him a box of 55gr dirtybird. This shows me that with some better quality ammo the rifle may be capable of getting under 2 moa and maybe 1.5 moa with handloads.
Spend more time getting familiar with their rifles? I shoot thousands of rounds a year through my ACR and 5 AR's. I also shoot my 308win and 338 Lapua out to over 1000 yards and have a 223 bolt action with carbon fiber barrel that will shoot 0.5 moa with my handloads so while I don't consider myself to be some super sniper I have enough time behind the triggers of many different rifles to know how to shoot well.
I've yet to see a single person on this site show a couple 5 round groups shot one after another from an XCR-L that group better than 2-3 moa. There are always flyers or as we've just seen messy targets with holes scattered all over the place and a few close shots that they claim are a group.
Want to silence the nay sayers? Show some real proof that the rifle is capable of shooting better. You can claim whatever you want but until people see proof they're going to go with what they've seen the rifle do personally.
I said it earlier, it's a great rifle but it's no DMR that's for sure. The latest keymod model rifles sounds like guys are getting better groups but I haven't seen any proof of it yet in the for of legitimate targets with a couple small groups shot consecutively.
Enjoy your rifle for what it is, a nice non restricted 223 semi auto that is capable of banging gongs out to 300 yards without much effort and can swap to a couple different calibers if you want. I would be very interested to see what one of these in 6.8SPC is capable of doing, it could make for an excellent deer rifle in that chambering.