So what you're saying is you put three shots into a circle the size of a quarter at twenty five meters, not three hundred.
I qualified on that target and others similar to it over various courses of fire during my career, including true life sized at three hundred meters. I have to say I have never seen any AR platform from original M16 through M4 deliver what would be super-sub MOA accuracy like that. I'm not trying to burst your bubble, but don't let yourself be deceived that using a scaled down target at close range is representative of true long range performance at full scale ranges.
Enjoy your new rifle for what is take and try it out at real ranges. You may be surprised at what you can really get out of it and what you can't. But at least you'll know for real, and that's what matters.