I would look into all factors before deciding on how accurate a gun is unless you are Jerry Miculek. If I have put in a full shift at work, walked the dog a couple miles a day hit the gym my accuracy can easily be 20%+ less accurate then when I am more rested. I have seen studies showing that eating large amounts of carbohydrates can diminish eye sight short term even for healthy people. Many things come into play besides just guns and ammo. But I am not a good person ask about selling a gun as I bought a second safe so I didn't have to