Sounds fine. 3 groups in the life of the rifle do not define it. I only own factory rifles, tweaked a bit with replacement stocks and such. They all shoot, consistently Sub-MOA. I have shot .2s with em, at times...but that does not make them a .2 rifle.
Maybe, just maybe if you said 1/2 of the time it was .1 groups, that may fly. But it isn't, and don't go boasting as such.
As you said in an earlier post, it is easy to shoot .1s with a 223@/100. Well, then, if it was so easy, why has it only been achieved 3 times?